18 · Body & interior

Seats

Make: Ford
Model: Expedition Factory Service Manual
Year: 2007
Section: 501-10 Seating › Diagnosis and testing › Seats

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BodySeats

Seats

Section 501-10 · Diagnosis and testing · revised 02/09/2007

Special Tool(s)
	73III Automotive Meter 105-R0057 or equivalent
	Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Principles of Operation

Driver and Passenger Power Seats Without Memory

The 10-way seat control feature moves the seat in 10 possible directions: the seat can be moved forward or backward and the front and back of the cushion can be moved up and down independently. The backrest of the seat can be moved forward and backward, and the lumbar can be moved in and out. All 10 positions are controlled by one switch. The power seat feature operates independent of the ignition switch position.

The 6-way power seat feature moves the seat in 6 possible directions: the seat can be moved forward or backward and the front and back of the cushion can be moved up and down independently. The power seat feature operates independent of the ignition switch position.

The power seat motors are hardwired to the seat control switch. The circuits are normally at ground through the seat control switch. An individual circuit is switched to power when a specific adjustment position is selected.

Power Driver Seat With Memory

The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a remote keyless entry (RKE) transmitter (if associated). There are 2 memory settings possible. The outside rear view mirror positions, the power adjustable pedals (if equipped) position and power adjustable steering column tilt position are also stored and recalled with the power driver seat positions. For vehicles equipped with power telescopic steering columns, only the tilting feature is controlled by the memory system.

The driver power seat is controlled by the driver seat module (DSM), if equipped. The DSM is located underneath the driver seat cushion frame. Programmable module installation (PMI) must be carried out when installing a new DSM. Refer to Section 418-01. The DSM does not require calibration to the driver seat track.

The driver seat control switch provides voltage to the DSM when activated. The neutral position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to power for operating the motors.

As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor.

The DSM has the ability for soft stops both at the upper and lower limits on all axis of the driver seat and power adjustable steering column. When an axis reaches the hard stop and the switch is held for approximately one second it will then back up 180 msec and establish the soft stop for that axis in that direction. The DSM uses this 'back up' strategy to check sensor integrity any time movement has stopped prematurely due to a sensor failure or obstruction.

The DSM communicates diagnostic trouble code (DTC) and other information using the MS-CAN communication bus. It should be noted for diagnostics that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for additional information concerning MS-CAN bus communication.

This section only diagnoses concerns specific to the memory seat. To diagnose a memory power mirror concern, refer to Section 501-09. To diagnose a power adjustable pedal concern, refer to Section 206-00. To diagnose a power adjustable steering column concern, refer to Section 211-04.

Programming Memory Seat Positions

A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat control switch. The driver must then depress the memory set switch. Within 5 seconds, the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
If no memory switch input is received within the 5-second time limit, the operation is aborted. If one of the following inputs is received during the 5-second programming limit, the operation is aborted:
- Power driver seat control switch
- Memory set switch
- Power adjustable pedal switch
- Power adjustable steering column switch (power tilt switch only, telescopic switch does not apply, if equipped)

Recalling a Stored Memory Seat Position

NOTE: A memory recall can be initiated only if the vehicle is in PARK or NEUTRAL gear and the ignition switch is not in START. A memory recall in progress will not be affected by moving the ignition switch to START or by moving the gearshift lever out of PARK or NEUTRAL.

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

Once the driver has stored the driver seat position, the driver can recall the setting by depressing the corresponding memory switch or by using a programmed remote entry transmitter.

The driver can recall the desired driver seat position by depressing one of the memory recall switches. Depressing memory switch 1 will initiate a recall of the power driver seat position stored in Memory 1. Depressing memory switch 2 will initiate a recall of the power driver seat position stored in Memory 2.

A RKE transmitter can be used to recall previously set memory positions but must first be associated to that memory position. The transmitter associated with personality 1 is capable of recalling memory position 1 only. Similarly, the associated personality 2 transmitter can recall only memory position 2. Up to 8 RKE transmitters can be associated for memory position recall.

Memory recall occurs when the unlock switch is depressed on the RKE transmitter if it has been associated with a memory position. The second depression of the unlock switch, which unlocks passenger doors, does not initiate a memory recall.

A RKE transmitter can be associated with a memory seat position by pressing a RKE button within 5 seconds after pressing the memory set switch button (when setting a memory seat position). Refer to the Owner's Literature for additional information on using RKE transmitters.

A memory recall in progress does not prohibit the initiation of another memory recall; the most recently requested memory recall will be executed.

Easy Entry/Exit Feature

The easy entry/exit feature moves the seat backwards about 2 inches when the ignition key is removed from the ignition switch. The DSM receives a key out command over the MS-CAN communication network and powers the driver seat rearward. This function will not operate if the seat is less than the travel distance to the end of the track or the function has been disabled. The DSM will also cancel this operation if a valid input command is received, such as the seat control switch or memory recall request.

The DSM will record the current seat position before powering the seat for an easy exit operation. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation. Easy entry operation will be cancelled if a valid input command is received by the DSM.

The easy entry/exit feature can be disabled and enabled by selecting easy entry on the message center display with the setup control button and pressing the reset control to select on or off from the display menu. Refer to driver controls in the Owner's Literature for additional instructions for using the message center.

Climate Controlled Seat System

NOTE: When installing a new climate control seat module (CCSM), it is necessary to carry out programmable module installation (PMI). Refer to Section 418-01.

Both the driver and front passenger climate controlled seats are independently controlled electronically by the CCSM mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a scan tool to command the CCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO) in 15 second durations. The system receives power from battery junction box (BJB) fuse 8 (40A) feeding battery voltage into the CCSM.

Both climate controlled seats operate independently. If a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.

The 4 switches (identified with seat icons) on the electronic automatic temperature control (EATC) module activate each seat system setting and illuminate LEDs above each switch to indicate the operating mode. Navigator uses 3 LEDs for HIGH, 2 LEDs for MED and 1 LED for LOW. Expedition uses 2 LEDs for HIGH and 1 LED for LOW.

Each driver and front passenger seat cushion and backrest is equipped with a thermo-electric device (TED) and blower motor assembly. Applying voltage polarity to the TED in one direction, causes it to heat. Applying voltage polarity in the opposite direction causes the TED to cool. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the incoming air depending on the control switch settings. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once activated, the CCSM maintains the heating/cooling modes until deactivated.

CAUTION: Avoid applying power directly to a TED for testing its operation. Doing so may cause damage to the TED.

The temperature differences between the individual heated and cooled settings is minimal. For example, it is difficult to distinguish between LOW COOL and MEDIUM COOL settings (Navigator). Measuring seat temperature at different settings is possible by monitoring the CCSM PIDs using the scan tool.

The EATC module communicates climate controlled seat commands to the CCSM using the medium speed controller area network (MS-CAN) communication bus. The MS-CAN bus is connected to the data link connector (DLC) for diagnostic use. No direct connection exists between the CCSM and EATC for the climate controlled seat switches. The climate controlled seats can be commanded on or off using the scan tool to verify both module communication on the MS-CAN bus and operation of the CCSM. This method may be useful for isolating a control switch concern. Refer to Section 418-00 for additional information concerning CAN bus communication.

Heating Characteristics

In HEAT mode, the TED circuits of a given seat are wired in parallel internally in the CCSM.
The climate controlled seat system draws approximately 24 amperes, with both seats heating, until reaching the set point and then the system operates at a reduced amperage to maintain the climate setting.
In HEAT mode, the TED can add up to 40°C-60°C (72°F-108°F) to the ambient inlet air temperature as it passes over the TED.
The system control settings are based on the LEDs above each seat heat switch button on the EATC (3 for Navigator or 2 for Expedition).
In the LOW setting, the climate controlled seat module is set to maintain TED temperature at approximately 46°C (115°F).
In the HIGH setting, the climate controlled seat module is set to maintain TED temperature at 65°C (149°F).
When heating, the CCSM will vary the speed of the fans and the TED duty cycle in order to reach and maintain the temperature determined by the switch setting (closed loop operation). Refer to the following table for heating mode temperatures.

Heating Mode TED Temperatures	Initial Temperature	Final Temperature
HIGH	90°C (194°F)	65°C (149°F)
MED (Navigator only)	80°C (176°F)	60°C (140°F)
LOW	75°C (167°F)	46°C (115°F)

Cooling Characteristics

In COOL mode, the TED circuits of a given seat are wired in series internally in the CCSM.
The climate controlled seat system draws approximately 7 amps.
In COOL mode, the TED can remove up to 8°C (14°F) from the ambient air temperature entering the system.
The system control settings are based on the LEDs above each seat cool switch button on the EATC (3 for Navigator or 2 for Expedition).
When cooling, the CCSM maintains constant speed of the fans and constant TED supply voltage (duty cycle) in open loop COOL mode (refer to the following table).

Cooling Mode TED Duty Cycles	TED Voltage	TED Supply Duty Cycle
HIGH	Vbat	100%
MED (Navigator only)	Vbat	75%
LOW	Vbat	50%

The climate controlled seat system is deactivated by one of the following actions:

Selecting the EATC module setting to manual OFF
Turning the vehicle OFF

If the temperature at one of the TEDs falls below 5°C (41°F), the climate controlled seat module will shut down the TEDs and initiate system recovery mode. If the temperature continues to drop below 2°C (36°F), the climate controlled seat module will shut down the affected seat operation.

Climate Controlled Seat System Recovery Mode

NOTE: The presence of overtemperature faults (DTCs B2729, B2730, B272A and B272B) can be induced by incorrect operation of the climate controlled seat system after an initial HEAT setting has been attained. If a HEAT setting is repeatedly turned OFF and ON in an attempt to increase the seat temperature or repeatedly toggled between HEAT and COOL modes, an overtemperature condition can result and the DTC(s) will be set.

If the temperature at one of the TEDs rises above 110°C (230°F) in the HEAT mode or 65°C (149°F) in the COOL mode for more than 4 seconds, the CCSM will record an overtemperature DTC, remove power from the TEDs and go into recovery mode (blower only) for 30 seconds to cool down the TEDs. The same will occur if a temperature difference of 60°C (108°F) or greater is seen between the backrest and cushion TEDs on either front seat. The CCSM will continue to monitor the TEDs while in recovery mode. If the temperature of the TEDs does not drop to 105°C (221°F) in the HEAT mode or 60°C (140°F) in the COOL mode after 30 seconds, the system will continue to cool the TEDs in recovery mode for up to 5 minutes. If the TEDs cool down at anytime after 30 seconds, but before 5 minutes (checked at 4 second intervals), the system will operate as normal. An overtemperature DTC will still be recorded even if the system recovers and is operating normally. This scenario is more likely to occur during extreme cabin temperatures with significant seat back sunload. If the system does not recover within 30 seconds in HEAT mode or within 5 minutes in COOL mode, the CCSM will disable that seat (fault mode) and remain off until the ignition is cycled. Also, if the CCSM detects temperature differential fault twice during the same ignition cycle, it will shut down. When a fault causes a shut-down the climate controlled seat indicators will turn off and that seat will not be operational until the next key cycle.

Third Row Power-Fold Seat

CAUTION: To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position.

CAUTION: Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s).

For the third row power-fold seat to operate, a shared voltage is supplied by the smart power distribution junction box (SPDJB) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the liftgate glass, liftgate door or any entry door must be open.

The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short torque shaft which is connected to the drive gear assembly. The power-fold seat motor and bracket assembly is serviceable separately. Refer to Power-Fold Seat Motor in this section.

Inspection and Verification

Verify the customer concern by operating the power seat, memory seat or climate controlled seat functions.
Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart
Mechanical	Electrical
Switch(es) Seat tracks obstructed or damaged Lumbar assembly damaged Recliner assembly damaged (backrest frame) Thermo-electric device (TED) assembly filter dirty (cushion or backrest)	Battery junction box (BJB) fuse(s): 45 (30A) (driver power seat or memory seat) 29 (30A) (passenger power seat) 8 (40A) (climate controlled seats) 4 (30A) (left third row power-fold seat) 38 (30A) (right third row power-fold seat) Smart power distribution junction box (SPDJB) fuse(s): 2 (15A) (memory seat) 12 (7.5) (memory seat) 5 (10A) (third row power-fold seats relay enable) Wiring harness Loose or corroded connector(s) Seat control switch Lumbar control switch Memory set switch Power seat motor (seat track) Power lumbar motor (lumbar assembly) Thermo-electric device (TED) assembly (cushion or backrest) Power recliner motor (backrest frame) Third row power-fold seat relay(s) Driver seat module (DSM) Climate controlled seat module (CCSM) Electronic automatic temperature control (EATC) module

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the concern is with the power seat (non-memory seat) or the power lumbar and the cause is not visually evident, verify the symptom and GO to Symptom Chart.
If the concern is with the memory seat or climate controlled seat and the cause is not visually evident, connect the scan tool to the data link connector (DLC).
NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.
If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to Section 418-00, No power to the scan tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).
Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Section 418-00.
- If the network test passes, retrieve and record on-demand and continuous memory diagnostic trouble codes (DTCs).
Clear the continuous DTCs and carry out the self-test diagnostics for the driver seat module (DSM) or climate controlled seat module (CCSM).
If the DTCs retrieved are related to the concern, go to Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart or Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to Section 419-10.
If no DTCs related to the concern are retrieved, GO to Symptom Chart.

Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart

DTC	Description	Retrieved	Action
B109A	Driver Power Mirror Fold Inward Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B109B	Driver Power Mirror Fold Inward Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B109C	Driver Power Mirror Fold Inward Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B109D	Driver Power Mirror Fold Outward Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B109E	Driver Power Mirror Fold Outward Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B109F	Driver Power Mirror Fold Outward Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B10A0	Passenger Power Mirror Fold Inward Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B10A1	Passenger Power Mirror Fold Inward Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B10A02	Passenger Power Mirror Fold Inward Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B10A3	Passenger Power Mirror Fold Outward Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B10A4	Passenger Power Mirror Fold Outward Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B10A5	Passenger Power Mirror Fold Outward Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1102	Mirror Fold Switch Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1342	ECU is Faulted	On-Demand and Continuous	INSTALL a new DSM and CARRY OUT programmable module installation (PMI). REFER to Section 419-10.
B1530	Memory Set Switch Circuit Short to Ground	On-Demand and Continuous	Go To Pinpoint Test M.
B1534	Memory 1 Switch Circuit Short to Ground	On-Demand and Continuous	Go To Pinpoint Test M.
B1538	Memory 2 Switch Circuit Short to Ground	On-Demand and Continuous	Go To Pinpoint Test M.
B1632	Mirror Driver Left Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1633	Mirror Driver Left Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1634	Mirror Driver Left Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1636	Mirror Driver Right Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1637	Mirror Driver Right Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1638	Mirror Driver Right Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1640	Mirror Passenger Left Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1641	Mirror Passenger Left Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1642	Mirror Passenger Left Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1644	Mirror Passenger Right Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1645	Mirror Passenger Right Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1646	Mirror Passenger Right Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1663	Seat Driver Front Up/Down Motor Stalled	On-Demand	If the motor does not operate, Go To Pinpoint Test L. If motor operates, Go To Pinpoint Test M.
B1664	Seat Driver Rear Up/Down Motor Stalled	On-Demand	If the motor does not operate, Go To Pinpoint Test L. If motor operates, Go To Pinpoint Test M.
B1665	Seat Driver Forward/Backward Motor Stalled	On-Demand	If the motor does not operate, Go To Pinpoint Test L. If motor operates, Go To Pinpoint Test M.
B1666	Seat Driver Recline Motor Stalled	On-Demand	If the motor does not operate, Go To Pinpoint Test L. If motor operates, Go To Pinpoint Test M.
B1667	Mirror Driver Up/Down Motor Stalled	On-Demand	REFER to Section 501-09.
B1668	Mirror Driver Right/Left Motor Stalled	On-Demand	REFER to Section 501-09.
B1669	Mirror Passenger Up/Down Motor Stalled	On-Demand	REFER to Section 501-09.
B1670	Mirror Passenger Right/Left Motor Stalled	On-Demand	REFER to Section 501-09.
B1676	Battery Pack Voltage Out of Range	On-Demand and Continuous	REFER to Section 414-00.
B1703	Seat Driver Recline Forward Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1707	Seat Driver Recline Rearward Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1711	Seat Driver Front Up Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1715	Seat Driver Front Down Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1719	Seat Driver Forward Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1723	Seat Driver Rearward Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1727	Seat Driver Rear Up Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1731	Seat Driver Rear Down Switch Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test L.
B1735	Mirror Driver Vertical Switch Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1739	Mirror Driver Horizontal Switch Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1743	Mirror Passenger Vertical Switch Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1747	Mirror Passenger Horizontal Switch Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1774	Mirror Driver Up Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1775	Mirror Driver Up Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1776	Mirror Driver Up Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1779	Mirror Driver Down Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1780	Mirror Driver Down Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1781	Mirror Driver Down Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1783	Mirror Passenger Up Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1784	Mirror Passenger Up Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1785	Mirror Passenger Up Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1787	Mirror Passenger Down Circuit Open	On-Demand and Continuous	REFER to Section 501-09.
B1788	Mirror Passenger Down Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B1789	Mirror Passenger Down Circuit Short to Ground	On-Demand and Continuous	REFER to Section 501-09.
B1952	Seat Rear Up/Down Position Feedback Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test M.
B1953	Seat Rear Up/Down Position Feedback Circuit Short to GND/Open Circuit	On-Demand and Continuous	Go To Pinpoint Test M.
B1956	Seat Front Up/Down Position Feedback Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test M.
B1957	Seat Front Up/Down Position Feedback Circuit Short to GND/Open Circuit	On-Demand and Continuous	Go To Pinpoint Test M.
B1960	Seat Recline Forward/Backward Position Feedback Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test M.
B1961	Seat Recline Forward/Backward Position Feedback Circuit Short to GND/Open Circuit	On-Demand and Continuous	Go To Pinpoint Test M.
B1964	Seat Horizontal Forward/Rearward Position Feedback Circuit Short to Battery	On-Demand and Continuous	Go To Pinpoint Test M.
B1965	Seat Horizontal Forward/Rearward Position Feedback Circuit Short to GND/Open Circuit	On-Demand and Continuous	Go To Pinpoint Test M.
B1987	Pedal Forward/Rearward Motor Stalled	On-Demand	REFER to Section 206-00.
B1988	Pedal Position Forward Switch Circuit Short to Ground	On-Demand and Continuous	REFER to Section 206-00.
B1989	Pedal Position Rearward Switch Circuit Short to Ground	On-Demand and Continuous	REFER to Section 206-00.
B1990	Pedal Forward/Rearward Potentiometer Feedback Circuit Failure	On-Demand and Continuous	REFER to Section 206-00.
B1991	Pedal Forward/Rearward Potentiometer Feedback Circuit Short to Battery	On-Demand and Continuous	REFER to Section 206-00.
B2084	Memory Set Indicator Short to GND	On-Demand and Continuous	NOTE: The memory set indicator application is not used for this vehicle and is disabled by default in a new module. The presence of this DTC indicates that programmable module installation (PMI) is required. DISCONNECT and CHECK DSM C341d for damaged or shorted pins. REPAIR as necessary. CARRY OUT programmable module installation (PMI) on the DSM. REFER to Section 418-01. REPEAT the self-test. CLEAR the DTCs. If DTC B2084 is retrieved again, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10.
B208A	Memory Set Indicator Short to Vbat	On-Demand and Continuous	NOTE: The memory set indicator application is not used for this vehicle and is disabled by default in a new module. The presence of this DTC indicates that programmable module installation (PMI) is required. DISCONNECT and CHECK DSM C341d for damaged or shorted pins. REPAIR as necessary. CARRY OUT programmable module installation (PMI) on the DSM. REFER to Section 418-01. REPEAT the self-test. CLEAR the DTCs. If DTC B208A is retrieved again, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10.
B2300	Seat Driver Memory Position Error	Continuous	Go To Pinpoint Test M.
B2312	Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure	On-Demand and Continuous	REFER to Section 501-09.
B2314	Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B2316	Mirror Passenger Vertical Feedback Potentiometer Circuit Failure	On-Demand and Continuous	REFER to Section 501-09.
B2318	Mirror Passenger Vertical Feedback Potentiometer Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B2320	Mirror Driver Horizontal Feedback Potentiometer Circuit Failure	On-Demand and Continuous	REFER to Section 501-09.
B2322	Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B2324	Mirror Driver Vertical Feedback Potentiometer Circuit Failure	On-Demand and Continuous	REFER to Section 501-09.
B2326	Mirror Driver Vertical Feedback Potentiometer Circuit Short to Battery	On-Demand and Continuous	REFER to Section 501-09.
B2334	Tilt Steering Column Up/Down Position Feedback Circuit Short to Battery/Open Circuit	On-Demand and Continuous	REFER to Section 211-04.
B2335	Tilt Steering Column Up/Down Position Feedback Circuit Short to GND	On-Demand and Continuous	REFER to Section 211-04.
B2341	Tilt Steering Column Motor Stalled	On-Demand	REFER to Section 211-04.
B2477	Module Configuration Failure	Continuous	NOTE: This DTC indicates programmable module installation (PMI) has not been done to a newly installed module. Presence of this DTC alone does not prevent basic seat operation from the seat control switch. CARRY OUT programmable module installation (PMI) on the DSM. REFER to Section 418-01. REPEAT the self-test and VERIFY successful PMI. CLEAR the DTCs.
B2A1B	Hall Sensor Feed Circuit Short to Battery	On-Demand and Continuous	If present as an on-demand DTC: Depower the supplemental restraint system (SRS). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. DISCONNECT the driver seat safety belt buckle pretensioner C3049. DISCONNECT the driver seat side air bag C3051. DISCONNECT DSM C341c. CONNECT the battery ground cable. With the ignition switch ON, MEASURE the voltage between C341c-12, circuit RPS13 (GN/OG), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
B2A1C	Hall Sensor Feed Circuit Short to Ground	On-Demand and Continuous	If present as an on-demand DTC: Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. DISCONNECT the driver seat safety belt buckle pretensioner C3049. DISCONNECT the driver seat side air bag C3051. DISCONNECT DSM C341c. CONNECT the battery ground cable. MEASURE the resistance between C341c-12, circuit RPS13 (GN/OG), harness side and ground. REPAIR the short to ground as needed. If OK, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
B2A1D	Potentiometer Feed Circuit Short to Battery	On-Demand and Continuous	REFER to Diagnostic Trouble Code Chart in Section 419-10.
B2A1E	Potentiometer Feed Circuit Short to Ground	On-Demand and Continuous	REFER to Diagnostic Trouble Code Chart in Section 419-10.
B2A42	Tilt Steering Column Up Switch Circuit Short to Ground	On-Demand and Continuous	REFER to Section 211-04.
B2A43	Tilt Steering Column Down Switch Circuit Short to Ground	On-Demand and Continuous	REFER to Section 211-04.
U0140	Lost Communication With Body Control Module (GEM)	Continuous	REPAIR all other DTCs first. REFER to Section 418-00 to diagnose the MS-CAN network concern.
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	Continuous	REPAIR all other DTCs first. REFER to Section 418-00 to diagnose the MS-CAN network concern.
U2050	Application Not Present	Continuous	NOTE: This DTC is set only during a module re-flash that did not complete correctly. RE-FLASH the DSM using the latest version of software data available. REFER to Section 418-01. REPEAT the self-test. If the DTC is retrieved again, CHECK the connection to the data link connector (DLC) and REPEAT module re-flash. REPEAT the self-test. CLEAR the DTCs.
U2471	Unexpected PRNDL State	On-Demand	NOTE: This DTC is set during a self-test if the PRNDL state is not PARK or NEUTRAL or is changed from either position while the self-test is in progress. VERIFY the transmission gear selector (PRNDL) is in PARK or NEUTRAL. REPEAT the self-test. CLEAR the DTCs. If the DTC is retrieved again, REFER to Section 307-01A or Section 307-01B to diagnose a transmission gear selector status concern.

Smart Power Distribution Junction Box (SPDJB) Diagnostic Trouble Code (DTC) Chart

NOTE: Only the third row power fold seating DTCs are listed. For all SPDJB DTCs, refer to Section 419-10.

DTC	Description	Retrieved	Action
B2794	Third Row Power Fold Circuit Failure	On-Demand	Go To Pinpoint Test R.
B2A2D	Third Row Power Fold Circuit Short to Ground	Continuous	Go To Pinpoint Test R.

Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart

DTC	Description	Retrieved	Action
B103B	Thermoelectric Driver Overcurrent Low	On-Demand and Continuous	Go To Pinpoint Test U.
B103C	Thermoelectric Driver Open Load	On-Demand and Continuous	Go To Pinpoint Test V.
B103D	Blower Driver Overtemperature	On-Demand and Continuous	Go To Pinpoint Test W.
B1111	Driver Thermoelectric Device Control Overtemperature Fault	On-Demand and Continuous	Go To Pinpoint Test U.
B1113	Passenger Thermoelectric Device Control Overtemperature Fault	On-Demand and Continuous	Go To Pinpoint Test X.
B111B	Passenger Thermoelectric Driver Overcurrent Low	On-Demand and Continuous	Go To Pinpoint Test X.
B111C	Passenger Thermoelectric Driver Open Load	On-Demand and Continuous	Go To Pinpoint Test Y.
B111D	Passenger Blower Driver Overtemperature	On-Demand and Continuous	Go To Pinpoint Test Z.
B1342	ECU is Faulted	On-Demand and Continuous	INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section.
B19A1	Passenger Seat Cushion Blower Speed Short to Battery	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT passenger seat safety belt buckle pretensioner C3050. DISCONNECT passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and passenger cushion TED C3040. CONNECT the battery ground cable. With the ignition switch ON, MEASURE the voltage between C3265c-3, circuit RHS08 (VT/WH), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A2	Passenger Seat Back Blower Speed Short to Battery	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT passenger seat safety belt buckle pretensioner C3050. DISCONNECT passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and passenger backrest TED C3039 (10-way power seat) or C3316 (6-way power seat). CONNECT the battery ground cable. With the ignition switch ON, MEASURE the voltage between C3265c-4, circuit CHS09 (GY), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A3	Driver Seat Cushion Blower Speed Short to Battery	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. DISCONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and driver cushion TED C3035. CONNECT the battery ground cable. With the ignition switch ON, MEASURE the voltage between C3265c-11, circuit RHS03 (GY/OG), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A4	Driver Seat Back Blower Speed Short to Battery	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. DISCONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and driver backrest TED C3034. CONNECT the battery ground cable. With the ignition switch ON, MEASURE the voltage between C3265c-12, circuit CHS04 (YE/GN), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A5	Passenger Seat Cushion Blower Speed Short to Ground	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT passenger seat safety belt buckle pretensioner C3050. DISCONNECT passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and passenger cushion TED C3040. CONNECT the battery ground cable. MEASURE the resistance between C3265c-3, circuit RHS08 (VT/WH), harness side and ground. REPAIR the short to ground as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A6	Passenger Seat Back Blower Speed Short to Ground	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT passenger seat safety belt buckle pretensioner C3050. DISCONNECT passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and passenger backrest TED C3039 (10-way power seat) or C3316 (6-way power seat). CONNECT the battery ground cable. MEASURE the resistance between C3265c-4, circuit CHS09 (GY), harness side and ground. REPAIR the short to voltage as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A7	Driver Seat Cushion Blower Speed Short to Ground	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. DISCONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and driver cushion TED C3035. CONNECT the battery ground cable. MEASURE the resistance between C3265c-11, circuit RHS03 (GY/OG), harness side and ground. REPAIR the short to ground as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B19A8	Driver Seat Back Blower Speed Short to Ground	On-Demand and Continuous	DEPOWER the supplemental restraint system (SRS). REFER to Section 501-20B. DISCONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. DISCONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. DISCONNECT CCSM C3265c and driver backrest TED C3034. CONNECT the battery ground cable. MEASURE the resistance between C3265c-12, circuit CHS04 (YE/GN), harness side and ground. REPAIR the short to ground as needed. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
B2477	Module Configuration Failure	On-Demand and Continuous	This DTC indicates programmable module installation (PMI) has not been done to a newly installed module. CARRY OUT PMI. REFER to Section 418-01. REPEAT the self-test. CLEAR the DTCs.
B2486	Climate Control Seat Module Voltage Out of Range	On-Demand and Continuous	REFER to Section 414-00 to diagnose the charging system concern.
B2729	Cushion Over-Temp Detected (Driver)	On-Demand and Continuous	Go To Pinpoint Test AA.
B272A	Passenger Cushion Over-Temp Detected	On-Demand and Continuous	Go To Pinpoint Test AB.
B272B	Passenger Back Over-Temp Detected	On-Demand and Continuous	Go To Pinpoint Test AC.
B272C	Driver Differential Temperature Fault	On-Demand and Continuous	If on-demand, Go To Pinpoint Test AD. If continuous only, and the system is operating, CHECK the TED cooling performance on the affected seat and VERIFY the system is operating correctly. REFER to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section. If a concern is found, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED, manifold, plenum, air ducts and foam pad). CHECK for airflow restrictions (TED inlets and outlets, TED-to-manifold or plenum connections, filters and ducts) and REPAIR as needed. If OK, CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. The DTC may have been set by extreme cabin temperatures or excessive sun-load on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.
B272D	Passenger Differential Temperature Fault	On-Demand and Continuous	If on-demand, Go To Pinpoint Test AE. If continuous only, and the system is operating, CHECK the TED cooling performance on the affected seat and VERIFY the system is operating correctly. REFER to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section. If a concern is found, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED, manifold, plenum, air ducts and foam pad). CHECK for airflow restrictions (TED inlets and outlets, TED-to-manifold or plenum connections, filters and ducts) and REPAIR as needed. If OK, CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. The DTC may have been set by extreme cabin temperatures or excessive sun-load on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.
B2730	Back Over-Temp Detected (Driver)	On-Demand and Continuous	Go To Pinpoint Test AF.
B6050	No Application Present	—	REFLASH with the latest operational software. REFER to Section 418-01. REPEAT the self-test. CLEAR the DTCs. If the DTC does not clear, or is retrieved again, REFLASH with the latest operational software again. REPEAT the self-test. CLEAR the DTCs. If the DTC does not clear, or is again retrieved from the self-test, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section.

Symptom Chart

Symptom Chart
Condition	Possible Sources	Action
No communication with the driver seat module (DSM)	Fuse Circuitry DSM	REFER to Section 418-00.
No communication with the climate control seat module (CCSM)	Fuse Circuitry CCSM	REFER to Section 418-00.
No communication with the module — unable to carry out on-demand self test with the DSM	Fuse(s) Circuitry DSM	REFER to Section 418-00.
The power seat is inoperative — driver, with power recliner	Fuse Circuitry Seat control switch	Go To Pinpoint Test A.
The power seat is inoperative — driver, without power recliner	Fuse Seat control switch Circuitry	Go To Pinpoint Test B.
The power seat is inoperative — passenger, with power recliner	Fuse Circuitry Seat control switch	Go To Pinpoint Test C.
The power seat is inoperative — passenger, without power recliner	Fuse Seat control switch Circuitry	Go To Pinpoint Test D.
The power seat moves but is loose	Fastening hardware Seat track	Go To Pinpoint Test E.
The power seat moves but is noisy	Seat track	Go To Pinpoint Test F.
The power seat does not make full travel	Seat track obstructed Seat track	Go To Pinpoint Test G.
The power seat does not move horizontally/vertically/recline — driver	Seat track Circuitry Seat control switch Power seat motor	Go To Pinpoint Test H.
The power seat does not move horizontally/vertically — driver	Seat track Circuitry Seat control switch Power seat motor	Go To Pinpoint Test I.
The power seat does not move horizontally/vertically/recline — passenger	Seat track Circuitry Seat control switch Power seat motor	Go To Pinpoint Test J.
The power seat does not move horizontally/vertically — passenger	Circuitry Seat track Seat control switch Power seat motor	Go To Pinpoint Test K.
The memory seat is inoperative/does not operate correctly — does not operate horizontally/vertically/recline	Fuse Circuitry Seat control switch Seat track DSM Power seat motor	Go To Pinpoint Test L.
The memory seat does not operate correctly — the seat moves in one second intervals	Circuitry Seat track DSM	REFER to the DTC Chart.
The memory seat does not operate correctly — does not operate using the memory set switch	Circuitry Memory set switch Seat track DSM	Go To Pinpoint Test M.
The memory seat does not operate correctly — does not operate using the remote transmitter	Remote keyless entry (RKE) transmitter is not correctly associated to a memory position Circuitry Keyless entry transmitter DSM Vehicle security module (VSM)	VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to Principles of Operation or the Owner's Literature for additional information on associating a RKE transmitter. For a RKE transmitter function concern, REFER to Section 501-14. RUN the DSM self-test and REFER to the DTC Chart to diagnose any DTCs retrieved.
Easy exit/easy entry is inoperative/not operating correctly	Circuitry Key in ignition switch Instrument Cluster DSM	Go To Pinpoint Test N.
The power lumbar is inoperative — driver	Circuitry Lumbar control switch Power lumbar assembly Power lumbar motor	Go To Pinpoint Test O.
The power lumbar is inoperative — passenger	Circuitry Lumbar control switch Power lumbar assembly Power lumbar motor	Go To Pinpoint Test P.
All climate controlled seats are inoperative	Fuse Circuitry MS-CAN network communication fault CCSM EATC module	VERIFY battery junction box (BJB) fuse 8 (40A) is OK. If OK, CARRY OUT the Data Links Diagnostics test using a scan tool and verify network communication of the EATC and CCSM. REFER to Section 418-00 to diagnose a module communication or network concern. If OK, CARRY OUT the CCSM on-demand self test and retrieve any DTCs. If any DTC is present, REFER to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart. CHECK the climate control system for correct operation. REFER to Section 412-00 for diagnosis of the EATC or climate control system. If OK, INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section.
A single climate controlled seat is inoperative/does not operate correctly	Circuitry EATC module CCSM	NOTE: If a fault occurs setting a DTC specific to only one climate controlled seat, the CCSM will disable only the affected seat outputs and allow the other seat to remain operational. CHECK for DTCs specific to the affected climate controlled seat and, if a DTC is present, REFER to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart. Go To Pinpoint Test Q.
A single climate controlled seat does not operate correctly — poor or intermittent cooling/heating	Excessive sun-load or extreme cabin temperatures Incorrectly installed thermo-electric device (TED), manifold or plenum Airflow blockage TED CCSM	CARRY OUT the CCSM on-demand self test and retrieve any DTCs. If any DTC is present, REFER to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart. If no DTC is present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED, manifold, plenum, air ducts and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED-to-manifold or plenum connections, filters and ducts) and REPAIR as needed. CHECK the TED cooling performance on the affected seat and VERIFY the system is operating correctly. REFER to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section. RETEST the system for normal operation.
A single climate controlled seat does not operate correctly — exhibits poor airflow or performance	Incorrectly installed thermo-electric device (TED), manifold or plenum Airflow blockage Disconnected air duct	CARRY OUT the CCSM on-demand self test and retrieve any DTCs. If any DTC is present, REFER to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart. If no DTC is present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED, manifold, plenum, air ducts and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED-to-manifold or plenum connections, filters and ducts) and REPAIR as needed. RETEST the system for normal operation.
A second row E-Z entry seat does not operate correctly — seat stuck in E-Z entry position	Incorrect shipping pin position	CHECK the shipping pin at the seat pedestal pivot is in the released position. REFER to Seat — Second Row, 40 Percent for additional information.
The power seat is inoperative — third row power-fold, left and right seats	Fuse(s) Circuitry Smart power distribution junction box (SPDJB)	Go To Pinpoint Test R.
The power seat is inoperative/does not operate correctly — third row power-fold, left seat	Fuse(s) Circuitry Power-fold seat relay Seat control switch(es) Power-fold seat motor	Go To Pinpoint Test S.
The power seat is inoperative/does not operate correctly — third row power-fold, right seat	Fuse(s) Circuitry Power-fold seat relay Seat control switch(es) Power-fold seat motor	Go To Pinpoint Test T.

Pinpoint Tests

CAUTION: Electronic modules are sensitive to electrostatic discharge. If exposed to these charges, damage can result.

Refer to Inspection and Verification, the Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart, Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart, Smart Power Distribution Junction Box (SPDJB) Diagnostic Trouble Code (DTC) Chart and the Symptom Chart for direction to the appropriate pinpoint test.

Pinpoint Test A: The Power Seat is Inoperative — Driver, With Power Recliner

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is powered by battery voltage on circuit SBB45 (GY/RD) and is supplied ground on circuit GD143 (BK/VT). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recline motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recline motor, which moves the seat or backrest in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recline mechanism to move the seat backrest forward and rearward. If a new seat track motor needs to be installed, it is necessary to install an entire power seat track.

Possible Causes

An inoperative driver power seat can be caused by:

a fuse.
wiring, terminals or connectors.
a faulty seat control switch.

PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE — DRIVER, WITH POWER RECLINER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
A1 CHECK CIRCUIT SBB45 (GY/RD) FOR VOLTAGE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Driver Seat Control Switch C3016. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between driver seat control switch C3016-5, circuit SBB45 (GY/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to A2. No VERIFY battery junction box (BJB) fuse 45 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
A2 CHECK CIRCUIT GD143 (BK/VT) FOR AN OPEN
Measure the resistance between driver seat control switch C3016-3, circuit GD143 (BK/VT), harness side and ground. Is the resistance less than 5 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test B: The Power Seat is Inoperative — Driver, Without Power Recliner

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is powered by battery voltage on circuit SBB45 (GY/RD) and is supplied ground on circuit GD143 (BK/VT). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new seat track motor needs to be installed, it is necessary to install an entire power seat track.

Possible Causes

An inoperative driver power seat can be caused by:

a fuse.
wiring, terminals or connectors.
a faulty seat control switch.

PINPOINT TEST B: THE POWER SEAT IS INOPERATIVE — DRIVER, WITHOUT POWER RECLINER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
B1 CHECK CIRCUIT SBB45 (GY/RD) FOR VOLTAGE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Driver Seat Control Switch C352. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between driver seat control switch C352-4, circuit SBB45 (GY/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to B2. No VERIFY battery junction box (BJB) fuse 45 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
B2 CHECK CIRCUIT GD143 (BK/VT) FOR AN OPEN
Measure the resistance between driver seat control switch C352-2, circuit GD143 (BK/VT), harness side and ground. Is the resistance less than 5 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test C: The Power Seat is Inoperative — Passenger, With Power Recliner

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is powered by battery voltage on circuit SBB29 (GY/RD) and is supplied ground on circuit GD138 (BK/WH). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new seat track motor needs to be installed, it is necessary to install an entire power seat track.

Possible Causes

An inoperative passenger power seat can be caused by:

a fuse.
wiring, terminals or connectors.
a faulty seat control switch.

PINPOINT TEST C: THE POWER SEAT IS INOPERATIVE — PASSENGER (WITH POWER RECLINER)

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
C1 CHECK CIRCUIT SBB29 (GY/RD) FOR VOLTAGE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Control Switch C3026. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat control switch C3026-5, circuit SBB29 (GY/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to C2. No VERIFY battery junction box (BJB) fuse 29 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
C2 CHECK CIRCUIT GD138 (BK/WH) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-3, circuit GD138 (BK/WH), harness side and ground. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test D: The Power Seat is Inoperative — Passenger, Without Power Recliner

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

Possible Causes

An inoperative passenger power seat can be caused by:

a fuse.
wiring, terminals or connectors.
a faulty seat control switch.

PINPOINT TEST D: THE POWER SEAT IS INOPERATIVE — PASSENGER, WITHOUT POWER RECLINER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
D1 CHECK CIRCUIT SBB29 (GY/RD) FOR VOLTAGE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Control Switch C355. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat control switch C355-4, circuit SBB29 (GY/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to D2. No VERIFY battery junction box (BJB) fuse 29 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
D2 CHECK CIRCUIT GD138 (BK/WH) FOR AN OPEN
Measure the resistance between passenger seat control switch C355-2, circuit GD138 (BK/WH), harness side and ground. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test E: The Power Seat Moves But is Loose

Normal Operation

The power seat movement should be smooth and the seat cushion should not rock during or after operation.

Possible Causes

A loose power seat can be caused by:

loose fastening hardware.
a faulty seat track component.

PINPOINT TEST E: THE POWER SEAT MOVES BUT IS LOOSE

Test Step	Result / Action to Take
E1 CHECK THE FASTENING HARDWARE
Key in OFF position. Inspect for loose fastening hardware on the affected seat. Is the fastening hardware loose?	Yes TIGHTEN all fastening hardware to specification. TEST the system for normal operation. No IDENTIFY the cause and REPAIR as necessary. TEST the system for normal operation.

Pinpoint Test F: The Power Seat Moves But is Noisy

Normal Operation

The power seat should move quietly during operation. Some noise is acceptable.

Possible Causes

A noisy power seat can be caused by:

a misaligned seat track.
a faulty seat track component.
an object obstructing seat movement.

PINPOINT TEST F: THE POWER SEAT MOVES BUT IS NOISY

Test Step	Result / Action to Take
F1 CHECK THE TRACK ALIGNMENT
Check the alignment of the track to the floor and the track to the seat. Is the track out of alignment?	Yes ALIGN the track to the seat and the floor. TEST the system for normal operation. No IDENTIFY the cause and REPAIR as necessary. TEST the system for normal operation.

Pinpoint Test G: The Power Seat Does Not Make Full Travel

Normal Operation

The power seat should travel fully horizontal (forward/rearward) and vertical (front up/down and rear up/down).

Possible Causes

A power seat that does not make full travel can be caused by:

an obstruction.
a faulty seat track component.

PINPOINT TEST G: THE POWER SEAT DOES NOT MAKE FULL TRAVEL

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
G1 CHECK FOR AN OBSTRUCTION IN THE SEAT TRACK
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Remove the affected seat. Refer to Seat — Front, 40 Percent in this section. Are there any obstructions in the track?	Yes REMOVE the obstruction(s) and LUBRICATE the track(s). REPOWER the SRS. REFER to Section 501-20B. TEST the system for normal operation. No IDENTIFY the cause and REPAIR as necessary. REPOWER the SRS. REFER to Section 501-20B. TEST the system for normal operation.

Pinpoint Test H: The Power Seat Does Not Move Horizontally/Vertically/Recline — Driver

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

Possible Causes

A driver power seat that does not move horizontally and/or vertically can be caused by:

wiring, terminals or connectors.
a faulty seat control switch.
a faulty seat track motor (seat track).
a faulty power recliner mechanism.

PINPOINT TEST H: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY/RECLINE — DRIVER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
H1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the driver power seat forward and rearward. Will the seat move horizontally?	Yes GO to H2. No GO to H3.
H2 CHECK THE RECLINER MOTOR FOR CORRECT OPERATION
Recline the driver backrest forward and rearward. Will the seat backrest recline forward and rearward?	Yes GO to H6. No GO to H13.
H3 CHECK VOLTAGE TO THE DRIVER SEAT HORIZONTAL MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Driver Seat Motor C362. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between driver seat horizontal motor C362-1, circuit CPS28 (GN), harness side and C362-2, circuit CPS23 (GN/VT), harness side, while pushing the driver seat control switch forward and rearward. Is the voltage greater than -10 volts when the switch is pushed forward, greater than +10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to H4.
H4 CHECK CIRCUIT CPS28 (GN) FOR AN OPEN
Disconnect: Driver Seat Control Switch C3016. Measure the resistance between driver seat control switch C3016-9, circuit CPS28 (GN), harness side and driver seat horizontal motor C362-1, circuit CPS28 (GN), harness side. Is the resistance less than 5 ohms?	Yes GO to H5. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H5 CHECK CIRCUIT CPS23 (GN/VT) FOR AN OPEN
Measure the resistance between driver seat control switch C3016-4, circuit CPS23 (GN/VT), harness side and driver seat horizontal motor C362-2, circuit CPS23 (GN/VT), harness side. Is the resistance less than 5 ohms ?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H6 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Determine the seat height adjust failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjust operates, GO to H7 . If only rear height adjust operates, GO to H10 . No INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H7 CHECK VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR
Disconnect: Driver Seat Rear Height Motor C363. Measure the voltage between driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side and C363-2, circuit CPS26 (YE/BU), harness side, while depressing the seat control switch rear height adjust up and down. Is the voltage greater than -10 volts when the rear height adjust is pressed down, greater than +10 volts when the rear height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to H8.
H8 CHECK CIRCUIT CPS27 (BU/BN) FOR AN OPEN
Disconnect: Driver Seat Control Switch C3016. Measure the resistance between driver seat control switch C3016-1, circuit CPS27 (BU/BN), harness side and driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side. Is the resistance less than 5 ohms?	Yes GO to H9. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H9 CHECK CIRCUIT CPS26 (YE/BU) FOR AN OPEN
Measure the resistance between driver seat control switch C3016-12, circuit CPS26 (YE/BU), harness side and driver seat rear height motor C363-2, circuit CPS26 (YE/BU), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H10 CHECK VOLTAGE TO DRIVER SEAT FRONT HEIGHT MOTOR
Disconnect: Driver Seat Front Height Motor C382. Measure the voltage between driver seat rear height motor C382-1, circuit CPS25 (WH/VT), harness side and C382-2, circuit CPS24 (GY), while pushing the seat control switch rear height adjust up and down. Is the voltage greater than -10 volts when the front height adjust is pressed down, greater than +10 volts when the front height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to H11.
H11 CHECK CIRCUIT CPS25 (WH/VT) FOR AN OPEN AND SHORT TO GROUND
Disconnect: Driver Seat Control Switch C3016. Measure the resistance between driver seat control switch C3016-2, circuit CPS25 (WH/VT), harness side and driver seat front height motor C382-1, circuit CPS25 (WH/VT), harness side. Is the resistance less than 5 ohms?	Yes GO to H12. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H12 CHECK CIRCUIT CPS24 (GY) FOR AN OPEN
Measure the resistance between driver seat control switch C3016-6, circuit CPS24 (GY) harness side, and driver seat front height motor C382-2, circuit CPS24 (GY), harness side. Is the resistance less than 5 ohms ?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H13 CHECK VOLTAGE TO THE DRIVER SEAT RECLINER MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Driver Seat Recliner Motor C3187. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between driver seat recliner motor C3187-1, circuit CPS08 (VT/OG), harness side and C3187-2, circuit CPS07 (GY/BN), while pushing the recline switch forward and rearward. Is the voltage greater than +10 volts when the switch is pushed forward, greater than -10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new driver seat recliner motor. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to H14.
H14 CHECK CIRCUITS CPS29 (WH/BN) AND CPS07 (GY/BN) FOR AN OPEN
Disconnect: Driver Seat Control Switch C3016. Measure the resistance between driver seat control switch C3016-11, circuit CPS29 (WH/BN), harness side and driver seat recliner motor C3187-2, circuit CPS07 (GY/BN), harness side. Is the resistance less than 5 ohms?	Yes GO to H15. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
H15 CHECK CIRCUITS CPS30 (VT/BN) AND CPS08 (VT/OG) FOR AN OPEN
Measure the resistance between driver seat control switch C3016-8, circuit CPS30 (VT/BN) harness side, and driver seat recliner motor C3187-1, circuit CPS08 (VT/OG), harness side. Is the resistance less than 5 ohms ?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test I: The Power Seat Does Not Move Horizontally/Vertically — Driver

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The driver seat control switch is powered by battery voltage on circuit SBB45 (GY/RD) and is supplied ground on circuit GD143 (BK/VT). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new motor needs to be installed, it is necessary to install an entire power seat track.

Possible Causes

A driver power seat that does not move horizontally and/or vertically can be caused by:

wiring, terminals or connectors.
a faulty seat control switch.
a faulty seat track motor (seat track).

PINPOINT TEST I: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY — DRIVER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
I1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the driver power seat forward and rearward. Will the seat move horizontally?	Yes GO to I5. No GO to I2.
I2 CHECK VOLTAGE TO THE DRIVER SEAT HORIZONTAL MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Driver Seat Horizontal Motor C362. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between driver seat horizontal motor C362-1, circuit CPS28 (GN), harness side and C362-2, circuit CPS23 (GN/VT), harness side, while pushing the driver seat control switch forward and rearward. Is the voltage greater than -10 volts when the switch is pushed forward, greater than +10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to I3.
I3 CHECK CIRCUIT CPS28 (GN) FOR AN OPEN
Disconnect: Driver Seat Control Switch C352. Measure the resistance between driver seat control switch C352-6, circuit CPS28 (GN), harness side and driver seat horizontal motor C362-1, circuit CPS28 (GN), harness side. Is the resistance less than 5 ohms ?	Yes GO to I4. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I4 CHECK CIRCUIT CPS23 (GN/VT) FOR AN OPEN
Measure the resistance between driver seat control switch C352-3, circuit CPS23 (GN/VT), harness side and driver seat horizontal motor C362-2, circuit CPS23 (GN/VT), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. If equipped, CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I5 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Determine the seat height adjust failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjust operates, GO to I6 . If only rear height adjust operates, GO to I9 . No INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I6 CHECK VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR
Disconnect: Driver Seat Rear Height Motor C363. Measure the voltage between driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side and C363-2, circuit CPS26 (YE/BU), harness side, while depressing the seat control switch rear height adjust up and down. Is the voltage greater than -10 volts when the rear height adjust is pressed down, greater than +10 volts when the rear height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to I7.
I7 CHECK CIRCUIT CPS27 (BU/BN) FOR AN OPEN
Disconnect: Driver Seat Control Switch C352. Measure the resistance between driver seat control switch C352-5, circuit CPS27 (BU/BN), harness side and driver seat rear height motor C363-1, circuit CPS27 (BU/BN), harness side. Is the resistance less than 5 ohms ?	Yes GO to I8. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I8 CHECK CIRCUIT CPS26 (YE/BU) FOR AN OPEN
Measure the resistance between driver seat control switch C352-7, circuit CPS26 (YE/BU), harness side and driver seat rear height motor C363-2, circuit CPS26 (YE/BU), harness side. Is the resistance less than 5 ohms ?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I9 CHECK THE VOLTAGE TO THE DRIVER SEAT FRONT HEIGHT MOTOR
Disconnect: Driver Seat Front Height Motor C382. Measure the voltage between driver seat front height motor C382-1, circuit CPS25 (WH/VT), harness side and C382-2, circuit CPS24 (GY), while pushing the seat control switch rear height adjust up and down. Is the voltage greater than +10 volts when the front height adjust is pressed down, greater than -10 volts when the front height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to I10.
I10 CHECK CIRCUIT CPS25 (WH/VT) FOR AN OPEN
Disconnect: Driver Seat Control Switch C352. Measure the resistance between driver seat control switch C352-1, circuit CPS25 (WH/VT), harness side and driver seat front height motor C382-1, circuit CPS25 (WH/VT), harness side. Is the resistance less than 5 ohms?	Yes GO to I11. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
I11 CHECK CIRCUIT CPS24 (GY) FOR AN OPEN
Measure the resistance between driver seat control switch C352-8, circuit CPS24 (GY) harness side, and driver seat front height motor C382-2, circuit CPS24 (GY), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new driver seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test J: The Power Seat Does Not Move Horizontally/Vertically/Recline — Passenger

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is powered by battery voltage on circuit SBB29 (GY/RD) and is supplied ground on circuit GD138 (BK/WH). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recline motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recline motor, which moves the seat or backrest in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). There is an additional motor in the power recline mechanism to move the seat backrest forward and rearward. If a new seat track motor needs to be installed, it is necessary to install an entire power seat track. The power recline motor is serviced with the backrest frame.

Possible Causes

A passenger power seat that does not move horizontally and/or vertically can be caused by:

wiring, terminals or connectors.
a faulty seat control switch.
a faulty seat track motor (seat track).
a faulty power recliner mechanism.

PINPOINT TEST J: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY/RECLINE — PASSENGER

NOTE: The air bag warning indicator illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
J1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION
Operate the passenger power seat forward and rearward. Will the seat move horizontally?	Yes GO to J2. No GO to J3.
J2 CHECK THE RECLINER MOTOR FOR CORRECT OPERATION
Recline the passenger backrest forward and rearward. Will the seat backrest recline forward and rearward?	Yes GO to J6. No GO to J13.
J3 CHECK VOLTAGE TO THE PASSENGER SEAT HORIZONTAL MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Horizontal Motor C332. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat motor C332-1, circuit CPS38 (GN/BU), harness side and C332-2, circuit CPS33 (WH), harness side, while pushing the passenger seat control switch forward and rearward. Is the voltage greater than +10 volts when the switch is pushed forward, greater than -10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to J4.
J4 CHECK CIRCUIT CPS38 (GN/BU) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C3026. Measure the resistance between passenger seat control switch C3026-9, circuit CPS38 (GN/BU), harness side and passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side. Is the resistance less than 5 ohms?	Yes GO to J5. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J5 CHECK CIRCUIT CPS33 (WH) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-4, circuit CPS33 (WH), harness side and passenger seat horizontal motor C332-2, circuit CPS33 (WH), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J6 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Determine the seat height adjust failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjust operates, GO to J7 . If only rear height adjust operates, GO to J10 . No INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J7 CHECK VOLTAGE TO THE PASSENGER SEAT REAR HEIGHT MOTOR
Disconnect: Passenger Seat Rear Height Motor C3075. Measure the voltage between passenger seat rear height motor C3075-1, circuit CPS37 (WH/BU), harness side and C3075-2, circuit CPS36 (YE/GY), harness side, while depressing the seat control switch rear height adjust up and down. Is the voltage greater than -10 volts when the rear height adjust is pressed down, greater than +10 volts when the rear height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to J8.
J8 CHECK CIRCUIT CPS37 (WH/BU) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C3026. Measure the resistance between passenger seat control switch C3026-12, circuit CPS37 (WH/BU), harness side and passenger seat rear height motor C3075-1, circuit CPS37 (WH/BU), harness side. Is the resistance less than 5 ohms ?	Yes GO to J9. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J9 CHECK CIRCUIT CPS36 (YE/GY) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-1, circuit CPS36 (YE/GY), harness side and passenger seat rear height motor C3075-2, circuit CPS36 (YE/GY), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J10 CHECK VOLTAGE TO PASSENGER SEAT FRONT HEIGHT MOTOR
Disconnect: Passenger Seat Front Height Motor C3074. Measure the voltage between passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side and C3074-2, circuit CPS34 (GY/BU), while pushing the seat control switch front height adjust up and down. Is the voltage greater than +10 volts when the front height adjust is pressed down, greater than -10 volts when the front height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to J11.
J11 CHECK CIRCUIT CPS35 (VT/GN) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C3026. Measure the resistance between passenger seat control switch C3026-6, circuit CPS35 (VT/GN), harness side and passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side. Is the resistance less than 5 ohms?	Yes GO to J12. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J12 CHECK CIRCUIT CPS34 (GY/BU) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-2, circuit CPS34 (GY/BU) harness side, and passenger seat front height motor C3074-2, circuit CPS34 (GY/BU), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J13 CHECK VOLTAGE TO THE PASSENGER SEAT RECLINER MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Recliner Motor C3189. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat recliner motor C3189-1, circuit CPS08 (VT/OG), harness side and C3189-2, circuit CPS07 (GY/BN), while pushing the recline switch forward and rearward. Is the voltage greater than -10 volts when the switch is pushed forward, greater than +10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new passenger seat recliner motor. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to J14.
J14 CHECK CIRCUITS CPS39 (GY/YE) AND CPS07 (GY/BN) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C3026. Measure the resistance between passenger seat control switch C3026-11, circuit CPS39 (GY/YE), harness side and passenger seat recliner motor C3189-2, circuit CPS07 (GY/BN), harness side. Is the resistance less than 5 ohms?	Yes GO to J15. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
J15 CHECK CIRCUITS CPS40 (VT/GY) AND CPS08 (VT/OG) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-8, circuit CPS40 (VT/GY) harness side, and passenger seat recliner motor C3189-1, circuit CPS08 (VT/OG), harness side. Is the resistance less than 5 ohms ?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test K: The Power Seat Does Not Move Horizontally/Vertically — Passenger

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is powered by battery voltage on circuit SBB29 (GY/RD) and is supplied ground on circuit GD138 (BK/WH). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (forward/rearward) and vertically (front up/down and rear up/down). If a new motor needs to be installed, it is necessary to install an entire power seat track.

Possible Causes

A passenger power seat that does not move horizontally and/or vertically can be caused by:

wiring, terminals or connectors.
a faulty seat control switch.
a faulty seat track motor (seat track).

PINPOINT TEST K: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY — PASSENGER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
K1 CHECK HORIZONTAL DIRECTION MOTOR FOR CORRECT OPERATION
Operate the passenger power seat forward and rearward. Will the seat move horizontally?	Yes GO to K5. No GO to K2.
K2 CHECK VOLTAGE TO THE PASSENGER SEAT HORIZONTAL MOTOR
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Horizontal Motor C332. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side and C332-2, circuit CPS33 (WH), harness side, while pushing the passenger seat control switch forward and rearward. Is the voltage greater than -10 volts when the switch is pushed forward, greater than +10 volts when the switch is pushed rearward and 0 volt when the switch is in a rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to K3.
K3 CHECK CIRCUIT CPS38 (GN/BU) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C355. Measure the resistance between passenger seat control switch C355-6, circuit CPS38 (GN/BU), harness side and passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side. Is the resistance less than 5 ohms ?	Yes GO to K4. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K4 CHECK CIRCUIT CPS33 (WH) FOR AN OPEN
Measure the resistance between passenger seat control switch C355-3, circuit CPS33 (WH), harness side and passenger seat horizontal motor C332-2, circuit CPS33 (WH), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K5 DETERMINE THE SEAT HEIGHT ADJUST FAILURE
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. Disconnect the passenger seat side air bag C3052. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Determine the seat height adjust failure. Does the seat front or rear height adjust up and down?	Yes If only front height adjust operates, GO to K6 . If only rear height adjust operates, GO to K9 . No INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K6 CHECK VOLTAGE TO THE PASSENGER SEAT REAR HEIGHT MOTOR
Disconnect: Passenger Seat Rear Height Motor C3075. Measure the voltage between passenger seat rear height motor C3075-1, circuit CPS37 (WH/BU), harness side and C3075-2, circuit CPS36 (YE/GY), harness side, while depressing the seat control switch rear height adjust up and down. Is the voltage greater than -10 volts when the rear height adjust is pressed down, greater than +10 volts when the rear height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to K7.
K7 CHECK CIRCUIT CPS36 (YE/GY) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C355. Measure the resistance between passenger seat control switch C355-5, circuit CPS36 (YE/GY), harness side and passenger seat rear height motor C3075-2, circuit CPS36 (YE/GY), harness side. Is the resistance less than 5 ohms ?	Yes GO to K8. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K8 CHECK CIRCUIT CPS37 (WH/BU) FOR AN OPEN
Measure the resistance between passenger seat control switch C355-7, circuit CPS37 (WH/BU), harness side and passenger seat rear height motor C3075-1, circuit CPS37 (WH/BU), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K9 CHECK VOLTAGE TO THE PASSENGER SEAT FRONT HEIGHT MOTOR
Disconnect: Passenger Seat Front Height Motor C3074. Measure the voltage between passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side and C3074-2, circuit CPS34 (GY/BU), while pushing the seat control switch rear height adjust up and down. Is the voltage greater than +10 volts when the front height adjust is pressed down, greater than -10 volts when the front height adjust is pressed up and 0 volt when the switch is in the rest position?	Yes INSTALL a new passenger seat track assembly. REFER to Seat Track — Power in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to K10.
K10 CHECK CIRCUIT CPS35 (VT/GN) FOR AN OPEN
Disconnect: Passenger Seat Control Switch C355. Measure the resistance between passenger seat control switch C355-8, circuit CPS35 (VT/GN), harness side and passenger seat front height motor C3074-1, circuit CPS35 (VT/GN), harness side. Is the resistance less than 5 ohms?	Yes GO to K11. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
K11 CHECK CIRCUIT CPS34 (GY/BU) FOR AN OPEN
Measure the resistance between passenger seat control switch C355-1, circuit CPS34 (GY/BU) harness side, and passenger seat front height motor C3074-2, circuit CPS34 (GY/BU), harness side. Is the resistance less than 5 ohms?	Yes INSTALL a new passenger seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test L: The Memory Seat is Inoperative/Does Not Operate Correctly — Does Not Operate Horizontally/Vertically/Recline

Refer to Wiring Diagrams Cell 123, Memory Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.

Normal Operation

The driver seat control switch is powered by battery voltage on circuit SBP12 (GN/RD) and is supplied ground on circuit GD133 (BK). When pressed, the seat control switch supplies the voltage and ground to the applicable driver seat module (DSM) inputs. The DSM then supplies voltage and ground to the appropriate power seat track motor or power recline motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the seat control switch reverses the polarity to the DSM inputs, and the DSM likewise reverses polarity of the appropriate power seat track motor or power recliner motor circuits causing the seat or backrest to move in the opposite direction. There are 3 power seat track motors that combine to move the seat horizontally (forward/rearward) and vertically (front up/down and rear up/down). The seat backrest power recliner mechanism uses a single motor to move the seat backrest forward and rearward.

Battery voltage is also supplied to DSM on circuit SBP02 (YE/RD) and SBB45 (GY/RD). Ground is supplied to the DSM on circuits GD133 (BK) and GD143 (BK/VT).

Each motor, in the memory power seat track and power recliner mechanism contains a Hall-effect position sensor. The DSM supplies a shared signal feed circuit to each position sensor. Each position sensor sends a signal pulse back to the DSM used to monitor the position of the power seat and seat backrest. The DSM uses this information to return the seat to a stored pre-programmed position when pressing the memory set switch or a remote entry transmitter. Refer to Principles of Operation in this section or the Owner's Literature for additional information on programming the DSM for storing memory seat positions.

The following pinpoint test diagnoses a memory seat that does not operate in one or more directions when using the seat control switch. If the memory seat moves in all directions using the seat control switch, Go To Pinpoint Test M.

Possible Causes

An inoperative memory seat can be caused by:

a fuse.
wiring, terminals or connectors.
a faulty seat control switch.
missing status information (CAN communication bus messages):
- ignition switch status.
- gear selector position.
a faulty power seat track.
a faulty power recliner motor.
a faulty DSM.

PINPOINT TEST L: THE MEMORY SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

Test Step

Result / Action to Take

L1 CHECK IGNITION SWITCH STATUS, TRANSMISSION GEAR SELECTOR STATUS AND RETRIEVE THE DSM DTCs

Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/Transmission Control Module (TCM) PID: Transmission Range (PRNDL).
Operate the transmission gear selector in all positions while monitoring the PID.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/Smart Power Distribution Junction Box (SPDJB) PIDs: Ignition Switch Status.
Cycle the ignition switch in all positions while monitoring the PID.
Verify the PID values agree with the ignition switch and transmission gear selector in all positions before proceeding with memory seat diagnosis.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Driver Seat Module (DSM) Self Test/Retrieve DTCs.
Are any DSM DTCs retrieved?

Yes
If DTCs B1663, B1664, B1665 and B1666 are all retrieved, GO to L10 .

If DTC B1663, GO to L20 .

If DTC B1664, GO to L23 .

If DTC B1665, GO to L26 .

If DTC B1666, GO to L29 .

If DTC B1703, GO to L3 .

If DTC B1707, GO to L3 .

If DTC B1711, GO to L3 .

If DTC B1715, GO to L3 .

If DTC B1719, GO to L3 .

If DTC B1723, GO to L3 .

If DTC B1727, GO to L3 .

If DTC B1731, GO to L3 .

If DTC B1342, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs.

For any other DSM DTCs, REFER to the Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart.

No
To diagnose an ignition switch status concern, REFER to Section 211-05.

To diagnose a transmission gear selector (PRNDL) status concern, REFER to Section 307-01A or Section 307-01B.

Otherwise, GO to L2 .

L2 MONITOR THE DSM PIDs AND CHECK FOR CORRECT MEMORY SEAT SWITCH INPUTS

Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM PIDs: Driver Seat/Pedal/Tilt Steering Column Input Switch Status.
Operate the seat control switch in all positions while monitoring the DSM driver seat switch input status PIDs.
Do the PID values agree with the switch positions?

Yes
GO to L9.

No
VERIFY smart power distribution junction box (SPDJB) fuse 12 (7.5A) is OK.

If the fuse fails while operating the seat control switch, DISCONNECT the seat control switch C3016 and GO to L7 .

If the fuse is OK, GO to L3 .

L3 CHECK THE SEAT CONTROL SWITCH

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: Seat Control Switch C3016.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Check the seat control switch.
Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.
Is the seat control switch OK?

Yes
GO to L4.

No
INSTALL a new seat control switch. REFER to Seat Control Switch — Front in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L4 CHECK CIRCUIT SBP12 (GN/RD) FOR VOLTAGE TO THE SEAT CONTROL SWITCH

Measure the voltage between seat control switch C3016-5, circuit SBP12 (GN/RD), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to L5.

No
VERIFY smart power distribution junction box (SPDJB) fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L5 CHECK CIRCUIT GD133 (BK) FOR AN OPEN

Measure the resistance between seat control switch C3016-3, circuit GD133 (BK), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to L6.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L6 CHECK SEAT CONTROL SWITCH TO DRIVER SEAT MODULE CIRCUITS FOR A SHORT TO POWER

Disconnect: DSM C341c and C341d.
Key in ON position.
Measure the voltage between the following seat control switch C3016 pins, harness side and ground.

Connector	Circuit
C3016-9	CPS28 (GN)
C3016-4	CPS23 (GN/VT)
C3016-2	CPS25 (WH/VT)
C3016-6	CPS24 (GY)
C3016-12	CPS26 (YE/BU)
C3016-1	CPS27 (BU/BN)
C3016-11	CPS29 (WH/BN)
C3016-8	CPS30 (VT/BN)

Is voltage indicated?

Yes
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
GO to L7.

L7 CHECK SEAT CONTROL SWITCH TO DRIVER SEAT MODULE CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between the following seat control switch C3016 pins, harness side and ground.

Connector	Circuit
C3016-9	CPS28 (GN)
C3016-4	CPS23 (GN/VT)
C3016-2	CPS25 (WH/VT)
C3016-6	CPS24 (GY)
C3016-12	CPS26 (YE/BU)
C3016-1	CPS27 (BU/BN)
C3016-11	CPS29 (WH/BN)
C3016-8	CPS30 (VT/BN)

Are the resistances greater than 10,000 ohms?

L8 CHECK SEAT CONTROL SWITCH TO DRIVER SEAT MODULE CIRCUITS FOR AN OPEN

Measure the resistance between the following seat control switch C3016 pins, harness side and DSM C341c/C341d pins, harness side.

Seat Control Switch Connector	Circuit	DSM Connector
C3016-9	CPS28 (GN)	C341c-3
C3016-4	CPS23 (GN/VT)	C341c-4
C3016-2	CPS25 (WH/VT)	C341c-14
C3016-6	CPS24 (GY)	C341c-13
C3016-12	CPS26 (YE/BU)	C341c-15
C3016-1	CPS27 (BU/BN)	C341c-16
C3016-11	CPS29 (WH/BN)	C341c-19
C3016-8	CPS30 (VT/BN)	C341d-4

Are the resistances less than 5 ohms?

Yes
INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L9 CHECK THE DSM FOR CORRECT OUTPUTS USING A SCAN TOOL AND DSM ACTIVE COMMANDS

Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM: Driver's Seat Output Control.
Toggle the following DSM active commands ON and OFF while monitoring the seat movement:

Front Motor Up

Front Motor Down

Rear Motor Up

Rear Motor Down

Horizontal Motor Forward

Horizontal Motor Backward

Recline Motor Forward

Recline Motor Backward

Does the driver seat operate correctly using the active commands?

Yes
INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
If no seat movement, GO to L10 .

If no front vertical seat movement, GO to L20 .

If no rear vertical seat movement, GO to L23 .

If no horizontal seat movement, GO to L26 .

If no recline seat movement, GO to L29 .

L10 CHECK DSM CIRCUIT SBB45 (GY/RD) FOR VOLTAGE

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341a.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the voltage between DSM C341a-1, circuit SBB45 (GY/RD), harness side and ground; and between DSM C341c-1, circuit SBP02 (YE/RD), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to L11.

No
VERIFY battery junction box (BJB) fuse 45 (30A) or smart power distribution junction box (SPDJB) fuse 2 (15A) is OK. If OK, REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L11 CHECK CIRCUITS GD133 (BK) AND GD143 (BK/VT) FOR AN OPEN

Disconnect: DSM C341e.
Measure the resistance between DSM C341a-2, circuit GD143 (BK/VT), harness side and ground; and between DSM C341e-20, circuit GD133 (BK), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to L12.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L12 CHECK CIRCUITS CPS03 (VT/GY) AND CPS02 (GY/YE) FOR A SHORT TO GROUND

Disconnect: DSM C341b.
Measure the resistance between DSM C341b-8, circuit CPS03 (VT/GY), harness side and ground; and between DSM C341b-16, circuit CPS02 (GY/YE), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to L14.

No
GO to L13.

L13 CHECK POWER SEAT FRONT HEIGHT MOTOR CIRCUITS CPS03 (VT/GY) AND CPS02 (GY/YE) FOR A SHORT TO GROUND

Disconnect: Power Seat Front Height Motor C382.
Measure the resistance between DSM C341b-8, circuit CPS03 (VT/GY), harness side and ground; and between DSM C341b-16, circuit CPS02 (GY/YE), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L14 CHECK CIRCUITS CPS05 (BU/WH) AND CPS04 (YE/OG) FOR A SHORT TO GROUND

Measure the resistance between DSM C341b-4, circuit CPS05 (BU/WH), harness side and ground; and between DSM C341b-12, circuit CPS04 (YE/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to L16.

No
GO to L15.

L15 CHECK THE POWER SEAT REAR HEIGHT MOTOR CIRCUITS CPS05 (BU/WH) AND CPS04 (YE/OG) FOR A SHORT TO GROUND

Disconnect: Power Seat Rear Height Motor C363.
Measure the resistance between DSM C341b-4, circuit CPS05 (BU/WH), harness side and ground; and between DSM C341b-12, circuit CPS04 (YE/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

L16 CHECK CIRCUITS CPS06 (GN/WH) AND CPS01 (GN/BU) FOR A SHORT TO GROUND

Measure the resistance between DSM C341b-15, circuit CPS06 (GN/WH), harness side and ground; and between DSM C341b-7, circuit CPS01 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to L18.

No
GO to L17.

L17 CHECK THE POWER SEAT HORIZONTAL MOTOR CIRCUITS CPS06 (GN/WH) AND CPS01 (GN/BU) FOR A SHORT TO GROUND

Disconnect: Power Seat Horizontal Motor C362.
Measure the resistance between DSM C341b-15, circuit CPS06 (GN/WH), harness side and ground; and between DSM C341b-7, circuit CPS01 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

L18 CHECK CIRCUITS CPS07 (GY/BN) AND CPS08 (VT/OG) FOR A SHORT TO GROUND

Measure the resistance between DSM C341b-2, circuit CPS07 (GY/BN), harness side and ground; and between DSM C341b-10, circuit CPS08 (VT/OG), harness side and ground.

Yes INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10 . REPEAT the se

Are the resistances greater than 10,000 ohms?

L19 CHECK THE DRIVER POWER SEAT RECLINER MOTOR CIRCUITS CPS07 (GY/BN) AND CPS08 (VT/OG) FOR A SHORT TO GROUND

Disconnect: Driver Power Seat Recliner Motor C3187.
Measure the resistance between DSM 341b-2, circuit CPS07 (GY/BN), harness side and ground; and between DSM C341b-10, circuit CPS08 (VT/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new driver seat recliner motor. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

L20 CHECK THE POWER SEAT FRONT HEIGHT MOTOR FOR CORRECT OPERATION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: Power Seat Front Height Motor C382.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM: Driver Seat Output Control.
Measure the voltage between power seat front height motor C382-1, circuit CPS03 (VT/GY) and C382-2, circuit CPS02 (GY/YE), harness side while using the scan tool to operate DSM active commands front motor up and front motor down, ON and OFF.

Is voltage present when the motor is commanded ON and no voltage present when commanded OFF?

L21 CHECK CIRCUITS CPS03 (VT/GY) AND CPS02 (GY/YE) FOR A SHORT TO POWER

Key in OFF position.
Disconnect: DSM C341b.
Key in ON position.
Measure the voltage between DSM C341b-8, circuit CPS03 (VT/GY), harness side and ground; and between DSM C341b-16, circuit CPS02 (GY/YE), harness side and ground.

Is voltage indicated?

L22 CHECK CIRCUITS CPS03 (VT/GY) AND CPS02 (GY/YE) FOR AN OPEN

Key in OFF position.
Measure the resistance between DSM C341b-8, circuit CPS03 (VT/GY), harness side and power seat motor C382-1, circuit CPS03 (VT/GY), harness side; and between DSM C341b-16, circuit CPS02 (GY/YE), harness side and power seat motor C382-2, circuit CPS02 (GY/YE), harness side.

Are the resistances less than 5 ohms?

L23 CHECK THE REAR HEIGHT MOTOR FOR CORRECT OPERATION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: Power Seat Rear Height Motor C363.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM: Driver Seat Output Control.
Measure the voltage between power seat rear height motor C363-1, circuit CPS05 (BU/WH), harness side and C363-2, circuit CPS04 (YE/OG), harness side while using the scan tool to operate DSM active commands rear motor up and rear motor down, ON and OFF.

Is voltage present when the motor is commanded ON and no voltage present when commanded OFF?

L24 CHECK CIRCUITS CPS05 (BU/WH) AND CPS04 (YE/OG) FOR A SHORT TO POWER

Key in OFF position.
Disconnect: DSM C341b.
Key in ON position.
Measure the voltage between DSM C341b-4, circuit CPS05 (BU/WH), harness side and ground; and between DSM C341b-12, circuit CPS04 (YE/OG), harness side and ground.

Is voltage indicated?

L25 CHECK CIRCUITS CPS05 (BU/WH) AND CPS04 (YE/OG) FOR AN OPEN

Key in OFF position.
Measure the resistance between DSM C341b-4, circuit CPS05 (BU/WH), harness side and power seat motor C363-1, circuit CPS05 (BU/WH), harness side; and between DSM C341b-12, circuit CPS04 (YE/OG), harness side and rear height power seat motor C363-2, circuit CPS04 (YE/OG), harness side.

Are the resistances less than 5 ohms?

L26 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: Power Seat Horizontal Motor C362.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM: Driver Seat Output Control.
Measure the voltage between power seat motor C362-2, circuit CPS01 (GN/BU) and C362-1, circuit CPS06 (GN/WH), harness side while using the scan tool to operate DSM active commands horizontal motor forward and horizontal motor backward, ON and OFF.

Is voltage present when the motor is commanded ON and no voltage present when commanded OFF?

L27 CHECK CIRCUITS CPS01 (GN/BU) AND CPS06 (GN/WH) FOR A SHORT TO POWER

Key in OFF position.
Disconnect: DSM C341b.
Key in ON position.
Measure the voltage between DSM C341b-15, circuit CPS06 (GN/WH), harness side and ground; and between DSM C341b-7, circuit CPS01 (GN/BU), harness side and ground.

Is voltage indicated?

L28 CHECK CIRCUITS CPS01 (GN/BU) AND CPS06 (GN/WH) FOR AN OPEN

Key in OFF position.
Measure the resistance between DSM C341b-15, circuit CPS06 (GN/WH), harness side and power seat motor C362-1, circuit CPS06 (GN/WH), harness side; and between DSM C341b-7, circuit CPS01 (GN/BU), harness side and horizontal power seat motor C362-2, circuit CPS01 (GN/BU), harness side.

Are the resistances less than 5 ohms?

L29 CHECK THE DRIVER SEAT POWER RECLINER MOTOR FOR CORRECT OPERATION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: Driver Seat Power Recliner Motor C3187.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM: Driver Seat Output Control.
Measure the voltage between driver seat power recliner motor C3187-2, circuit CPS07 (GY/BN) and C3187-1, circuit CPS08 (VT/OG), harness side while using the scan tool to operate the DSM active commands recline motor forward and recline motor backward, ON and OFF.

Is voltage present when the motor is commanded ON and no voltage present when commanded OFF?

L30 CHECK CIRCUITS CPS07 (GY/BN) AND CPS08 (VT/OG) FOR A SHORT TO POWER

Key in OFF position.
Disconnect: DSM C341b.
Key in ON position.
Measure the voltage between DSM C341b-2, circuit CPS07 (GY/BN), harness side and ground; and between DSM C341b-10, circuit CPS08 (VT/OG), harness side and ground.

Is voltage indicated?

L31 CHECK CIRCUITS CPS07 (GY/BN) AND CPS08 (VT/OG) FOR AN OPEN

Key in OFF position.
Measure the resistance between DSM C341b-2, circuit CPS07 (GY/BN), harness side and power seat recliner motor C3187-2, circuit CPS07 (GY/BN), harness side; and between DSM C341b-10, circuit CPS08 (VT/OG), harness side and power seat recliner motor C3187-1, circuit CPS08 (VT/OG), harness side.

Are the resistances less than 5 ohms?

Pinpoint Test M: The Memory Seat Does Not Operate Correctly — Does Not Operate Using the Memory Set Switch

Refer to Wiring Diagrams Cell 123, Memory Seats for schematic and connector information.

Normal Operation

Battery voltage is also supplied to DSM on circuit SBP02 (YE/RD) and SBB45 (GY/RD). Ground is supplied to the DSM on circuits GD133 (BK) and GD143 (BK/VT).

The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory set switch. If the memory seat does not move in all directions using the seat control switch, Go To Pinpoint Test L.

Possible Causes

A memory seat that does not operate correctly can be caused by:

wiring, terminals or connectors.
a faulty memory set switch.
missing status information (CAN communication bus messages):
- ignition switch status.
- gear selector position.
a faulty remote entry transmitter.
a faulty memory power seat track.
a faulty recliner mechanism.
a faulty DSM.

PINPOINT TEST M: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY — DOES NOT OPERATE USING THE MEMORY SET SWITCH

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

Test Step

Result / Action to Take

M1 CHECK IGNITION SWITCH STATUS, TRANSMISSION GEAR SELECTOR STATUS AND RETRIEVE THE DSM DTCs

Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/Transmission Control Module (TCM) PID: PRND Position.
Operate the transmission gear selector in all positions while monitoring the PID.
Enter the following diagnostic mode on the diagnostic tool: Datalogger/Smart Power Distribution Junction Box (SPDJB) PID: Ignition Switch Status.
Cycle the ignition switch in all positions while monitoring the PID.
Verify the PID values agree with the ignition switch and transmission gear selector in all positions before proceeding with memory seat diagnosis.
Key in ON position.
Using the switches, operate the memory seat, memory mirrors, adjustable memory pedals (if equipped) and adjustable memory steering column (if equipped) in all directions through the full range of travel.
Place the memory seat, memory mirrors, adjustable memory pedals (if equipped) and adjustable memory steering column (if equipped) in central travel positions.
Enter the following diagnostic mode on the diagnostic tool: Driver Seat Module (DSM) Self Test/Retrieve DTCs.
Are any DSM DTCs retrieved?

Yes
If DTC B2084 and B208A, GO to M5 .

If DTCs B1952, B1956, B1960 and B1964 are all retrieved, GO to M8 .

If DTCs B1953, B1957, B1961 and B1965 are all retrieved, GO to M8 .

If DTC B1530, GO to M3 .

If DTC B1534, GO to M3 .

If DTC B1538, GO to M3 .

If DTC B1663, GO to M9 .

If DTC B1664, GO to M12 .

If DTC B1665, GO to M15 .

If DTC B1666, GO to M18 .

If DTC B1952, GO to M12 .

If DTC B1953, GO to M12 .

If DTC B1956, GO to M9 .

If DTC B1957, GO to M9 .

If DTC B1960, GO to M18 .

If DTC B1961, GO to M18 .

If DTC B1964, GO to M15 .

If DTC B1965, GO to M15 .

If DTC B2300, GO to M8 .

If DTC B1342, INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs.

For any other DSM DTCs, REFER to the Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart.

No
To diagnose an ignition switch status concern, REFER to Section 211-05.

To diagnose a transmission gear selector (PRNDL) status concern, REFER to Section 307-01A or Section 307-01B.

Otherwise, GO to M2 .

M2 MONITOR THE DSM PIDs AND CHECK THE DSM FOR CORRECT MEMORY SET SWITCH INPUTS

Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM PID: Memory Set/Recall Input Switch Status.
Monitor the DSM memory set switch, memory set/recall 1 switch and memory set/recall 2 switch PID while activating the memory set switch, recall 1 and recall 2 buttons.
Do the PID values agree with the switch button positions?

Yes
GO to M8.

No
GO to M3 .

M3 CHECK THE MEMORY SET SWITCH

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect: Memory Set Switch C3246.
Using the following table to check the memory set switch, measure the resistance between the memory set switch pins, component side, while pressing the indicated switch buttons and compare the results to the table.

Switch Button	Pins	Ohms
Memory Switch 1	2 and 7	Less than 5
Memory Switch 2	2 and 3	Less than 5
Memory Set Switch	2 and 4	Less than 5

Is the resistance less than 5 ohms with the switch buttons depressed and greater than 10,000 ohms with the switch buttons released?

Yes
GO to M4.

No
INSTALL a new memory set switch. REFER to Memory Set Switch.

REPOWER the SRS. REFER to Section 501-20B.

REPEAT the self-test. CLEAR the DTCs.

M4 CHECK GROUND CIRCUIT GD133 (BK) TO THE MEMORY SET SWITCH

Key in ON position.
Measure the resistance between memory set switch C3246-2, circuit GD133 (BK), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to M5.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M5 CHECK CIRCUITS CPS14 (GY/VT), CPS15 (VT/WH) AND CPS16 (YE) FOR A SHORT TO POWER

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341c and C341d.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between the following memory set switch C3246 pins, harness side and ground:

Connector - Pin	Circuit
C3246-4	CPS14 (GY/VT)
C3246-7	CPS15 (VT/WH)
C3246-3	CPS16 (YE)

Is voltage indicated?

M6 CHECK CIRCUITS CPS14 (GY/VT), CPS15 (VT/WH) AND CPS16 (YE) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between the following memory set switch C3246 pins, harness side and ground:

Connector - Pin	Circuit
C3246-4	CPS14 (GY/VT)
C3246-7	CPS15 (VT/WH)
C3246-3	CPS16 (YE)

Are the resistances greater than 10,000 ohms?

Yes
GO to M7.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M7 CHECK CIRCUITS CPS14 (GY/VT), CPS15 (VT/WH) AND CPS16 (YE) FOR AN OPEN

Measure the resistance between the following memory set switch C3246 pins and DSM C341c/C341d pins:

Memory Set Switch	Circuit	DSM
C3246-3	CPS16 (YE)	C341c-11
C3246-4	CPS14 (GY/VT)	C341d-19
C3246-7	CPS15 (VT/WH)	C341d-9

Are the resistances less than 5 ohms?

M8 MONITOR THE DSM PIDs

Enter the following diagnostic mode on the diagnostic tool: Datalogger/DSM PIDs:.

Driver Seat/Mirror/Pedal Sensor Output Status

Steering Column Tilt Position (if equipped)

Monitor the memory seat, memory mirrors, adjustable memory pedals (if equipped) and adjustable memory steering column (if equipped) sensor PIDs.
Using the switches, operate the memory seat, memory mirrors, adjustable memory pedals (if equipped) and adjustable memory steering column (if equipped) in all directions through the full range of travel while monitoring the PIDs.
Does each PID indicate the sensor is operational throughout each associated motor's full range of travel?

Yes
INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs.

No
If front up/down position sensor PID value indicates not present, GO to M9 .

If rear up/down position sensor PID value indicates not present, GO to M12 .

If forward/rearward position sensor PID value indicates not present, GO to M15 .

If recline position sensor PID value indicates not present, GO to M18 .

For a memory mirror sensor concern, REFER to Section 501-09.

For a memory adjustable pedal sensor concern, REFER to Section 206-00.

For an adjustable memory column sensor concern, REFER to Section 211-04.

M9 CHECK SENSOR CIRCUITS VPS10 (BU/GN) AND RPS13 (GN/OG) FOR A SHORT TO POWER

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341c and C341d.
Disconnect: Memory Seat Front Height Position Sensor C383.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between memory seat front height position sensor C383-1, circuit VPS10 (BU/GN), harness side and ground; and between memory seat front height position sensor 383-3, circuit RPS13 (GN/OG), harness side and ground.

Is voltage indicated?

M10 CHECK SENSOR CIRCUITS VPS10 (BU/GN) AND RPS13 (GN/OG) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between memory seat front height position sensor C383-1, circuit VPS10 (BU/GN), harness side and ground; and between memory seat front height position sensor 383-3, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to M11.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M11 CHECK SENSOR CIRCUITS VPS10 (BU/GN) AND RPS13 (GN/OG) FOR AN OPEN

Measure the resistance between memory seat front height position sensor C383-1, circuit VPS10 (BU/GN), harness side and DSM C341d-7, circuit VPS10 (BU/GN), harness side; and between memory seat front height position sensor 383-3, circuit RPS13 (GN/OG), harness side and DSM C341c-12, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 5 ohms?

M12 CHECK SENSOR CIRCUITS VPS11 (GN/BN) AND RPS13 (GN/OG) FOR A SHORT TO POWER

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341c and C341d.
Disconnect: Memory Seat Rear Height Position Sensor C373.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between memory seat rear height position sensor C373-1, circuit VPS11 (GN/BN), harness side and ground; and between memory seat rear height position sensor C373-3, circuit RPS13 (GN/OG), harness side and ground.

Is voltage indicated?

M13 CHECK SENSOR CIRCUITS VPS11 (GN/BN) AND RPS13 (GN/OG) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between memory seat rear height position sensor C373-1, circuit VPS11 (GN/BN), harness side and ground; and between memory seat rear height position sensor C373-3, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to M14.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M14 CHECK SENSOR CIRCUITS VPS11 (GN/BN) AND RPS13 (GN/OG) AND FOR AN OPEN

Measure the resistance between memory seat rear height position sensor C373-1, circuit VPS11 (GN/BN), harness side and DSM C341d-17, circuit VPS11 (GN/BN), harness side; and between memory seat rear height position sensor C373-3, circuit RPS13 (GN/OG), harness side and DSM C341c-12, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 5 ohms?

Yes
INSTALL a new driver seat track assembly. REFER to Seat Track — Power in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the circuit(s) in question. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M15 CHECK SENSOR CIRCUITS VPS09 (BN/BU) AND RPS13 (GN/OG) AND FOR A SHORT TO POWER

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341c and C341d.
Disconnect: Memory Seat Horizontal Position Sensor C372.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between memory seat horizontal position sensor C373-1, circuit VPS09 (BN/BU), harness side and ground; and between memory seat horizontal position sensor C373-3, circuit RPS13 (GN/OG), harness side and ground.

Is voltage indicated?

M16 CHECK SENSOR CIRCUITS VPS09 (BN/BU) AND RPS13 (GN/OG) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between memory seat horizontal position sensor C373-1, circuit VPS09 (BN/BU), harness side and ground; and between memory seat horizontal position sensor C373-3, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to M17.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M17 CHECK SENSOR CIRCUITS VPS09 (BN/BU) AND RPS13 (GN/OG) FOR AN OPEN

Measure the resistance between memory seat horizontal position sensor C373-1, circuit VPS09 (BN/BU), harness side and DSM C341d-16, circuit VPS09 (BN/BU), harness side; and between memory seat horizontal position sensor C373-3, circuit RPS13 (GN/OG), harness side and DSM C341c-12, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 5 ohms?

M18 CHECK SENSOR CIRCUITS VPS12 (GY/OG) AND RPS13 (GN/OG) FOR A SHORT TO POWER

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect the driver seat safety belt buckle pretensioner C3049.
Disconnect the driver seat side air bag C3051.
Disconnect: DSM C341c and C341d.
Disconnect: Driver Seat Recliner Motor C3187.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between driver seat recliner motor C3187-3, circuit VPS12 (GY/OG), harness side and ground; and between driver seat recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and ground.

Is voltage indicated?

M19 CHECK SENSOR CIRCUITS VPS12 (GY/OG) AND RPS13 (GN/OG) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between driver seat recliner motor C3187-3, circuit VPS12 (GY/OG), harness side and ground; and between driver seat recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to M20.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049.

CONNECT driver seat side air bag module C3051.

REPOWER the SRS. REFER to Section 501-20B.

M20 CHECK SENSOR CIRCUITS VPS12 (GY/OG) AND RPS13 (GN/OG) FOR AN OPEN

Measure the resistance between driver seat recliner motor C3187-3, circuit VPS12 (GY/OG), harness side and DSM C341d-8, circuit VPS12 (GY/OG), harness side; and between driver seat recliner motor C3187-4, circuit RPS13 (GN/OG), harness side and DSM C341c-12, circuit RPS13 (GN/OG), harness side.

Are the resistances less than 5 ohms?

Pinpoint Test N: Easy Exit/Easy Entry is Inoperative/Does Not Operate Correctly

Normal Operation

The DSM receives a key out command over the MS-CAN communication network and powers the driver seat rearward about 51 mm (2 in).

Possible Causes

An inoperative/not operating correctly easy entry/exit seat feature can be caused by:

the easy entry/exit feature is not enabled.
missing status information (CAN communication bus messages) to the driver seat module (DSM):
- ignition switch status.
- gear selector position.
wiring, terminals or connectors.
a faulty key-in-ignition warning switch.
a faulty driver seat module (DSM).

PINPOINT TEST N: EASY EXIT/EASY ENTRY IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.

NOTE: The transmission gear selector must be in park for the easy entry/exit feature to function.

Test Step	Result / Action to Take
N1 CHECK THE DRIVER POWER SEAT OPERATION
Key in ON position. Check the message center to verify the easy entry/exit feature is enabled. Using the seat control switch, operate the driver power seat fully forward and rearward. Position the seat at least 2 inches from its rear stopping point. Connect the diagnostic tool. Enter the following diagnostic mode on the diagnostic tool: Driver Seat Module (DSM) Self Test/Retrieve DTCs. Are any DSM DTCs retrieved?	Yes REFER to the Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Chart. No If disabled, ENABLE the easy entry/exit feature with the message center. REFER to the Owner's Literature — Driver Controls for easy entry/exit feature enable/disable instructions. TEST the system for normal operation. If OK, INSTRUCT the customer on correct system operation. If easy entry/exit is enabled and the seat does not move horizontally from the seat control switch, Go To Pinpoint Test L. Otherwise, GO to N2 .
N2 CHECK THE DRIVER SEAT MODULE (DSM) FOR CORRECT INPUTS
Enter the following diagnostic mode on the diagnostic tool: Datalogger/Transmission Control Module (TCM): Transmission Range (PRNDL) PID. Monitor the PID while operating the transmission gear selector in all positions. Enter the following diagnostic mode on the diagnostic tool: Datalogger/Smart Power Distribution Junction Box (SPDJB): Ignition Switch Position PIDs. Monitor the PIDs with the key in the ignition switch and with the key removed. Do the PID values agree with the ignition switch and transmission gear selector positions?	Yes INSTALL a new DSM and CARRY OUT PMI. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs. No To diagnose the key-in-ignition warning switch fault, REFER to Section 413-09. To diagnose a transmission gear selector (PRNDL) status concern, REFER to Section 307-01A or Section 307-01B.

Pinpoint Test O: The Power Lumbar is Inoperative — Driver

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 123, Memory Seats for schematic and connector information.

Normal Operation

The seat control switch is powered by battery voltage on circuit SBB45 (GY/RD) or SBP12 (GN/RD) (memory seat) and is supplied ground on circuit GD143 (BK/VT) or GD133 (BK) (memory seat). When the lumbar knob on the seat control switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the switch in the opposite direction, voltage polarity to the power lumbar motor is reversed, moving the lumbar assembly in the opposite direction.

Possible Causes

An inoperative power lumbar can be caused by:

wiring, terminals or connectors.
a faulty lumbar control switch.
a faulty power lumbar motor assembly.

PINPOINT TEST O: THE POWER LUMBAR IS INOPERATIVE — DRIVER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
O1 CHECK CIRCUIT SBB45 (GY/RD) OR SBP12 (GN/RD) (MEMORY SEAT) FOR AN OPEN
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the driver seat safety belt buckle pretensioner C3049. Disconnect the driver seat side air bag C3051. Disconnect: Seat Control Switch C3016. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between seat control switch C3016-5, circuit SBB45 (GY/RD) (SBP12 [GN/RD] for memory seat), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to O2. No VERIFY battery junction box (BJB) fuse 45 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
O2 CHECK CIRCUIT GD143 (BK/VT) OR GD133 (BK) (MEMORY SEAT) FOR AN OPEN
Measure the resistance between seat control switch C3016-3, circuit GD143 (BK/VT) (GD133 [BK] for memory seat), harness side and ground. Is the resistance less than 5 ohms?	Yes GO to O3. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
O3 CHECK THE LUMBAR MOTOR
Connect: Seat Control Switch C3016. Disconnect: Power Lumbar Motor C3215. For power seat, measure the voltage between power lumbar motor C3215-B, circuit CPS18 (BN/GN), harness side and power lumbar motor C3215-A, circuit CPS19 (GY/VT), harness side. Operate the seat control switch in both directions. Is the voltage greater than 10 volts in both directions?	Yes INSTALL a new power lumbar assembly. REFER to Lumbar Assembly in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No GO to O4.
O4 CHECK CIRCUIT CPS19 (GY/VT) AND CIRCUIT CPS18 (BN/GN) FOR A SHORT TO GROUND
Disconnect: Seat Control Switch C3016. Measure the resistance between seat control switch C3016-7, circuit CPS18 (BN/GN), harness side and ground; and between seat control switch C3016-10, circuit CPS19 (GY/VT), harness side and ground. Are the resistances greater than 10,000 ohms.	Yes GO to O5. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.
O5 CHECK CIRCUITS CPS19 (GY/VT) AND CPS18 (BN/GN) FOR AN OPEN
Measure the resistance between seat control switch C3016-7, circuit CPS18 (BN/GN), harness side and power lumbar motor C3215-B, circuit CPS18 (BN/GN), harness side; and between seat control switch C3016-10, circuit CPS19 (GY/VT), harness side and power lumbar motor C3215-A, circuit CPS19 (GY/VT), harness side. Are the resistances less than 5 ohms?	Yes INSTALL a new seat control switch. REFER to Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT driver safety belt buckle pretensioner C3049. CONNECT driver seat side air bag module C3051. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test P: The Power Lumbar is Inoperative — Passenger

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

The passenger seat control switch is powered by battery voltage on circuit SBB29 (GY/RD) and is supplied ground on circuit GD138 (BK/WH). When the lumbar knob on the seat control switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the switch in the opposite direction, voltage polarity to the power lumbar motor is reversed, moving the lumbar assembly in the opposite direction.

Possible Causes

An inoperative power lumbar can be caused by:

wiring, terminals or connectors.
a faulty lumbar control switch.
a faulty power lumbar motor assembly.

PINPOINT TEST P: THE POWER LUMBAR IS INOPERATIVE — PASSENGER

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
P1 CHECK CIRCUIT SBB29 (GY/RD) FOR AN OPEN
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect the passenger seat safety belt buckle pretensioner C3050. If equipped, disconnect the passenger seat side air bag C3052. Disconnect: Passenger Seat Control Switch C3026. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between passenger seat control switch C3026-5, circuit SBB29 (GY/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to P2. No VERIFY battery junction box (BJB) fuse 29 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
P2 CHECK CIRCUIT GD138 (BK/WH) FOR AN OPEN
Measure the resistance between passenger seat control switch C3026-3, circuit GD138 (BK/WH), harness side and ground. Is the resistance less than 5 ohms?	Yes GO to P3. No REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
P3 CHECK THE LUMBAR MOTOR
Connect: Passenger Seat Control Switch C3026. Disconnect: Power Lumbar Motor C3216. For power seat, measure the voltage between power lumbar motor C3216-B, circuit CPS18 (BN/GN), harness side and power lumbar motor C3216-A, circuit CPS19 (GY/VT), harness side. Operate the seat control switch in both directions. Is the voltage greater than 10 volts in both directions?	Yes INSTALL a new power lumbar assembly. REFER to Lumbar Assembly in this section. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No GO to P4.
P4 CHECK CIRCUIT CPS20 (VT) AND CIRCUIT CPS21 (WH/OG) FOR A SHORT TO GROUND
Disconnect: Passenger Seat Control Switch C3026. Measure the resistance between seat control switch C3026-7, circuit CPS20 (VT), harness side and ground; and between seat control switch C3026-10, circuit CPS21 (WH/OG), harness side and ground. Are the resistances greater than 10,000 ohms.	Yes GO to P5. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
P5 CHECK CIRCUITS CPS18 (BN/GN), CPS19 (GY/VT), CPS20 (VT) AND CPS21 (WH/OG) FOR AN OPEN
Measure the resistance between seat control switch C3026-7, circuit CPS20 (VT), harness side and power lumbar motor C3216-B, circuit CPS18 (BN/GN), harness side; and between seat control switch C3026-10, circuit CPS21 (WH/OG), harness side and power lumbar motor C3216-A, circuit CPS19 (GY/VT), harness side. Are the resistances less than 5 ohms?	Yes INSTALL a new seat control switch. Seat Control Switch — Front. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No REPAIR the affected circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. CONNECT passenger safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test Q: A Single Climate Controlled Seat is Inoperative/Does Not Operate Correctly

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Both the driver and front passenger climate controlled seats are independently controlled electronically by the climate controlled seat module (CCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a scan tool to command the CCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO). The system receives power from battery junction box (BJB) fuse 8 (40A) feeding battery voltage on circuit SBB08 (VT/RD) into CCSM C3265a pins E and F. If power is disconnected from either pin E or F of CCSM C3265a with the power connection remaining on the other circuit, both seats will remain operational because the power feed circuits are connected internally in the CCSM. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.

Each driver and front passenger seat cushion is equipped with a SPDJB device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED). Similarly, each driver and front passenger seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the CCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the EATC seat switch settings.

Possible Causes

A single climate controlled seat that does not operate can be caused by:

wiring, terminals or connectors.
an MS-CAN fault.
a faulted electronic automatic temperature control (EATC) module.
a faulted CCSM.

PINPOINT TEST Q: A SINGLE CLIMATE CONTROLLED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
Q1 CHECK CLIMATE CONTROLLED SEAT OPERATION
Check the operation of both climate controlled seats and verify the symptom. Does the other climate controlled seat operate?	Yes GO to Q2. No GO to Symptom Chart.
Q2 CHECK FOR CCSM AND EATC DTCS
Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs. Enter the following diagnostic mode on the diagnostic tool: Electronic Automatic Temperature Control (EATC) Self Test/Retrieve DTCs. Were any DTCs retrieved during the on-demand self test?	Yes For CCSM DTCs, GO to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Table. For EATC DTCs, REFER to Section 412-00 to diagnose the EATC module fault. No GO to Q3.
Q3 CHECK OPERATION OF THE CCSM USING THE SCAN TOOL
Enter the following diagnostic mode on the diagnostic tool: Datalogger/CCSM Active Command: Thermal Electric Device (TED) Heat Mode (driver seat) or Passenger Thermal Electric Device (TED) Heat Mode (passenger seat). Enter the following diagnostic mode on the diagnostic tool: Datalogger/CCSM PID: Driver DATC State Encoded Seat Mode or Passenger DATC State Encoded Seat Mode. NOTE: The CCSM active commands thermal electric device (TED) heat mode (driver seat) and passenger thermal electric device (TED) heat mode (passenger seat) are limited to 15 seconds in the ON state, then turn OFF. NOTE: The CCSM is not the source of the fault if the active command mode is operational and also demonstrates the CCSM is able to receive and process inbound command messages from the communication bus. This indicates the EATC module may not be sending the commands correctly. Monitor the CCSM PID for the affected seat while using the scan tool to command the seat on. Does the affected seat operate using the active command?	Yes GO to Q5. No GO to Q4.
Q4 CHECK FOR VOLTAGE TO THE CCSM
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect passenger seat safety belt buckle pretensioner C3050. Disconnect passenger seat side air bag C3052. Disconnect: CCSM C3265a. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the voltage between CCSM C3265a-F, circuit SBB08 (VT/RD), harness side and CCSM C3265a-E, circuit SBB08 (VT/RD), harness side and ground. Is the voltage greater than 10 volts?	Yes INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No VERIFY battery junction box (BJB) fuse 8 (40A) is OK. If OK, REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
Q5 MONITOR THE CCSM PID
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect passenger seat safety belt buckle pretensioner C3050. Disconnect passenger seat side air bag C3052. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Enter the following diagnostic mode on the diagnostic tool: Datalogger/CCSM PID: Driver DATC State Encoded Seat Mode (driver seat) or Passenger DATC State Encoded Seat Mode (passenger seat). NOTE: Operation of the climate controlled seats repeatedly ON and OFF or repeatedly switching between HEAT and COOL modes may cause a CCSM DTC(s) to set, disabling one or both seat system and may require the DTC(s) to be cleared before seat operation may continue. It is recommended to allow time between modes for seat temperatures to adjust back toward ambient temperatures before continuing. Monitor the CCSM PID for the driver (or passenger) seat while operating the affected climate controlled seat by selecting HIGH HEAT, MEDIUM HEAT (Navigator only), LOW HEAT and OFF on the EATC module. Then select HIGH COOL, MEDIUM COOL (Navigator only) and LOW COOL. Do all the PID values match climate controlled seat settings selected on the EATC module?	Yes If the fault is intermittent, CHECK for causes of the intermittent fault. INSPECT the connectors, terminals and wiring. ATTEMPT to recreate the fault by flexing the wire harness and operating the system. CHECK the electrical connectors for corrosion or pushed-out pins. REPAIR any intermittent concerns found. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B. No INSTALL a new EATC module. REFER to Section 412-01. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test R: The Power Seat is Inoperative — Third Row Power-Fold, Left and Right Seats

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Normal Operation

Voltage is supplied to the power-fold seat relay coils controlled from the smart power distribution junction box (SPDJB) through circuit CPS48 (BU) enabling the system. Ground is supplied to the power-fold seat relay coils and both left and right seat control switches on circuit GD151 (BK/GN). The power fold seat relays will be provided voltage on the coil side from the SPDJB for 10 minutes when the transmission selector is in PARK and the liftgate, or liftgate glass, is open. The voltage will be disabled 10 minutes after turning the vehicle off. If the voltage is disabled after 10 minutes, it can be re-enabled by opening any door or pressing the unlock key on the key fob.

Possible Causes

An inoperative third row power-fold seat can be caused by:

open fuse.
auxiliary relay box third row power-fold seat relay(s).
wiring, terminals or connectors.
a faulty SPDJB.

PINPOINT TEST R: THE POWER SEAT IS INOPERATIVE — THIRD ROW POWER-FOLD, LEFT AND RIGHT SEATS

Test Step	Result / Action to Take
R1 CHECK FOR SMART POWER DISTRIBUTION JUNCTION BOX (SPDJB) DTCs
Enter the following diagnostic mode on the diagnostic tool: Smart Power Distribution Junction Box (SPDJB) Self Test/Retrieve DTCs. Are any SPDJB DTCs retrieved?	Yes If DTC B2A2D, key OFF and VERIFY smart junction box fuse 5 (10A) is OK. DISCONNECT SPDJB C2280d and GO to R6. If DTC B2794, key OFF. DISCONNECT auxiliary relay box left and right third row power-fold seat relays and GO to R3. For all other SPDJB DTCs, REFER to Diagnostic Trouble Code (DTC) Chart in Section 419-10. No GO to R2.
R2 CHECK FOR VOLTAGE TO THE RELAYS
Key in OFF position. Disconnect: Left Third Row Power-Fold Seat Relay. Disconnect: Right Third Row Power-Fold Seat Relay. Key in ON position. Measure the voltage between auxiliary relay box left and right third row power-fold seat relay terminals 85, circuit CPS48 (BU), harness side and ground. Is the voltage greater than 10 volts?	Yes GO to R3. No Key OFF. DISCONNECT SPDJB C2280d. GO to R5.
R3 CHECK FOR FAULTY RELAYS
Carry-out the component test on the auxiliary relay box left and right third row power-fold seat relays. Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information. Did both relays pass the component test?	Yes GO to R4. No INSTALL a new relay(s). REPEAT the self-test. CLEAR the DTCs.
R4 CHECK CIRCUIT CPS48 (BU) FOR A SHORT TO VOLTAGE
Key in OFF position. Disconnect: Smart Power Distribution Junction Box (SPDJB) C2280d. Key in ON position. Measure the voltage between auxiliary relay box left and right third row power-fold seat relay terminals 85, circuit CPS48 (BU), harness side and ground. Is voltage present?	Yes REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs. No GO to R5.
R5 CHECK CIRCUIT CPS48 (BU) FOR AN OPEN
Key in OFF position. Measure the resistance between auxiliary relay box left and right third row power-fold seat relay terminals 85, circuit CPS48 (BU), harness side and SPDJB C2280d-24, circuit CPS48 (BU), harness side. Is the resistance less than 5 ohms?	Yes GO to R6. No REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
R6 CHECK CIRCUIT CPS48 (BU) FOR A SHORT TO GROUND
Measure the resistance between auxiliary relay box left and right power-fold seat relay terminals 85, circuit CPS48 (BU), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to R7. No REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
R7 CHECK GROUND CIRCUIT GD151 (BK/GN) FOR OPEN
Measure the resistance between auxiliary relay box left and right third row power-fold seat relay terminals 86, circuit GD151 (BK/GN), harness side and ground. Is the resistance less than 5 ohms?	Yes INSTALL a new SPDJB. REFER to Section 419-10. REPEAT the self-test. CLEAR the DTCs. No REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

Pinpoint Test S: The Power Seat is Inoperative/Does Not Operate Correctly — Third Row Power-Fold, Left Seat

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.

Normal Operation

Battery voltage is supplied from the battery junction box (BJB) to the switch side of left third row power-fold seat relay through circuit SBB04 (GN/RD) and is hot at all times. When the smart power distribution junction box (SPDJB) energizes the left power-fold seat relay circuit CPS48 (BU), battery voltage is switched through the relay to the left power-fold seat control switch on circuit SBB31 (WH/RD). Ground is supplied to the left power-fold seat control switch through circuit GD151 (BK/GN). When the left third row power-fold seat control switch is pressed, battery voltage and ground is supplied to the left power-fold seat motor. Pressing the switch in the opposite direction, reverses the polarity to the left power-fold seat motor, which moves the third row seat backrest in the opposite direction.

Possible Causes

An inoperative third row power-fold seat can be caused by:

fuse(s).
wiring, terminals or connectors.
a faulty left third row power-fold seat control switch.
a faulty left third row power-fold seat relay.
a faulty left third row power-fold seat motor.

PINPOINT TEST S: THE POWER SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — THIRD ROW POWER-FOLD, LEFT SEAT

Test Step

Result / Action to Take

S1 CHECK CIRCUIT SBB04 (GN/RD) FOR AN OPEN

Disconnect: Left Third Row Power-Fold Seat Relay.
Key in ON position.
Measure the voltage between auxiliary relay box left third row power-fold seat relay terminal 30, circuit SBB04 (GN/RD), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to S2.

No
VERIFY battery junction box (BJB) fuse 4 (30A) is OK. If OK, REPAIR the circuit. If the fuse is open, INSTALL a new fuse and RE-TEST the circuit for greater than 10 volts. If the fuse opens again or voltage is not present, REPAIR the circuit. TEST the system for normal operation. Otherwise, GO to S6 .

S2 CHECK CIRCUIT CPS48 (BU) FOR VOLTAGE

Measure the voltage between left third row seat relay terminal 85, circuit CPS48 (BU), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to S3.

No
CHECK operation of the right side power-fold seat. If the right side power-fold seat is operational, REPAIR the circuit. TEST the system for normal operation. Otherwise, Go To Pinpoint Test R.

S3 CHECK CIRCUIT GD151 (BK/GN) FOR AN OPEN

Key in OFF position.
Measure the resistance between auxiliary relay box left third row power-fold seat relay terminal 86, circuit GD151 (BK/GN), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to S4.

No
REPAIR the circuit. TEST the system for normal operation.

S4 CHECK LEFT THIRD ROW SEAT RELAY

Carry out the component test on the left third row power-fold seat relay.
Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.
Did the relay pass the component test?

Yes
GO to S5.

No
INSTALL a new left third row power-fold seat relay. TEST the system for normal operation.

S5 CHECK CIRCUIT SBB31 (WH/RD) FOR A SHORT TO VOLTAGE

Disconnect: Left Rear Third Row Seat Control Switch C4179.
Key in ON position.
Measure the voltage between auxiliary relay box left rear third row power-fold seat relay terminal 87, circuit SBB31 (WH/RD), harness side and ground.

Is voltage present?

Yes
REPAIR the circuit. TEST the system for normal operation.

No
GO to S6.

S6 CHECK CIRCUIT SBB31 (WH/RD) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between auxiliary relay box left third row power-fold seat relay terminal 87, circuit SBB31 (WH/RD), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to S7.

No
REPAIR the circuit. TEST the system for normal operation.

S7 CHECK CIRCUIT SBB31 (WH/RD) FOR AN OPEN

Measure the resistance between auxiliary relay box left third row power-fold seat relay terminal 87, circuit SBB31 (WH/RD), harness side and left third row seat control switch C4179-2, circuit SBB31 (WH/RD), harness side.

Is the resistance less than 5 ohms?

Yes
GO to S8.

No
REPAIR the circuit. TEST the system for normal operation.

S8 CHECK CIRCUIT GD151 (BK/GN) FOR AN OPEN

Key in OFF position.
Measure the resistance between left third row power-fold seat relay terminal 86, circuit GD151 (BK/GN), harness side and ground; and between left third row power-fold seat control switch C4179-6, circuit GD151 (BK/GN), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to S9.

No
REPAIR the circuit. TEST the system for normal operation.

S9 CHECK LEFT THIRD ROW POWER-FOLD SEAT CONTROL SWITCH

Using the following table to check the left power-fold seat switch, measure the resistance between the switch pins, component side, while pressing the switch buttons in the indicated position and compare the results to the table.

Switch Position	Pins	Ohms
Up	2 and 5	Less than 5
Down	2 and 5	Greater than 10,000
Down	2 and 1	Less than 5
Up	2 and 1	Greater than 10,000
Up and at Rest	1 and 6	Less than 5
Down	1 and 6	Greater than 10,000
Down and at Rest	5 and 6	Less than 5
Up	5 and 6	Greater than 10,000

Is the switch OK?

Yes
GO to S10.

No
INSTALL a switch. REFER to Seat Control Switch — Third Row. TEST the system for normal operation.

S10 CHECK CIRCUIT CPS50 (BU/BN) AND CPS49 (BN/GN) FOR A SHORT TO POWER

Key in ON position.
Measure the voltage between left third row power-fold seat control switch C4179-5, circuit CPS50 (BU/BN) and ground; and between C4179-1, circuit CPS49 (BN/GN) harness side and ground.

Is voltage present?

Yes
REPAIR the circuit(s). TEST the system for normal operation.

No
GO to S11.

S11 CHECK CIRCUIT CPS50 (BU/BN) AND CPS49 (BN/GN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between left third row power-fold seat control switch C4179-5, circuit CPS50 (BU/BN) and ground; and between left third row power-fold seat control switch C4179-1, circuit CPS49 (BN/GN) harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to S12.

No
REPAIR the circuit(s). TEST the system for normal operation.

S12 CHECK CIRCUITS CPS49 (BN/GN) AND CPS50 (BU/BN) FOR AN OPEN

Disconnect: Left Third Row Seat Motor C4181.
Measure the resistance between left third row power-fold seat control switch C4179-5, circuit CPS50 (BU/BN), harness side and left third row power-fold seat motor C4181-2, circuit CPS50 (BU/BN) or circuit CPS52 (YE/GN) (Expedition EL), harness side; and between left third row power-fold seat control switch, C4179-1, circuit CPS49 (BN/GN), harness side and left third row power-fold seat motor C4181-1, circuit CPS49 (BN/GN) or circuit CPS51 (VT/GN) (Expedition EL), harness side.

Is the resistance less than 5 ohms?

Yes
INSTALL a new left third row power-fold seat motor. REFER to Power-Fold Seat Motor. TEST the system for normal operation.

No
REPAIR the circuit(s). TEST the system for normal operation.

Pinpoint Test T: The Power Seat is Inoperative/Does Not Operate Correctly — Third Row Power-Fold, Right Seat

Refer to Wiring Diagrams Cell 120, Power Seats for schematic and connector information.

Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.

Normal Operation

Battery voltage is supplied from the battery junction box (BJB) to the switch side of right third row power-fold seat relay through circuit SBB38 (BN/RD) and is hot at all times. When the smart power distribution junction box (SPDJB) energizes the right power-fold seat relay, battery voltage is switched through the relay to the right power-fold seat control switch on circuit SBB32 (VT/RD). Ground is supplied to the right power-fold seat control switch through circuit GD151 (BK/GN). When the right third row power-fold seat control switch is pressed, battery voltage and ground is supplied to the right power-fold seat motor. Pressing the switch in the opposite direction, reverses the polarity to the right power-fold seat motor, which moves the third row seat backrest in the opposite direction.

Possible Causes

An inoperative third row power-fold seat can be caused by:

fuse(s).
wiring, terminals or connectors.
a faulty right third row power-fold seat control switch.
a faulty right third row power-fold seat relay.
a faulty right third row power-fold seat motor.
a faulty SPDJB.

PINPOINT TEST T: THE POWER SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — THIRD ROW POWER-FOLD, RIGHT SEAT

Test Step

Result / Action to Take

T1 CHECK CIRCUIT SBB38 (BN/RD) FOR AN OPEN

Key in ON position.
Measure the voltage between auxiliary relay box right third row power-fold seat relay terminal 30, circuit SBB38 (BN/RD), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to T2.

No
VERIFY battery junction box (BJB) fuse 38 (30A) is OK. If OK, REPAIR the circuit. If the fuse is open, INSTALL a new fuse and RE-TEST the circuit for greater than 10 volts. If the fuse opens again or voltage is not present, REPAIR the circuit. TEST the system for normal operation. Otherwise, GO to T6 .

T2 CHECK CIRCUIT CPS48 (BU) FOR VOLTAGE

Measure the voltage between auxiliary relay box right third row power-fold seat relay terminal 85, circuit CPS48 (BU), harness side and ground.

Is the voltage greater than 10 volts?

Yes
GO to T3.

No
CHECK operation of the left side power-fold seat. If the left side power-fold seat is operational, REPAIR the circuit. TEST the system for normal operation. Otherwise, Go To Pinpoint Test S.

T3 CHECK CIRCUIT GD151 (BK/GN) FOR AN OPEN

Key in OFF position.
Measure the resistance between auxiliary relay box right third row power-fold seat relay terminal 86, circuit GD151 (BK/GN), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to T4.

No
REPAIR the circuit. TEST the system for normal operation.

T4 CHECK RIGHT THIRD ROW POWER-FOLD SEAT RELAY

Carry out component test on the right third row power-fold seat relay.
Refer to Wiring Diagrams Cell 149, Component Testing for schematic and connector information.
Did the relay pass the component test?

Yes
GO to T5.

No
INSTALL a new right third row power-fold seat relay. TEST the system for normal operation.

T5 CHECK CIRCUIT SBB32 (VT/RD) FOR A SHORT TO POWER

Disconnect: Right Third Row Power-Fold Seat Control Switch C4180.
Key in ON position.
Measure the voltage between auxiliary relay box right third row power-fold seat relay terminal 87, circuit SBB32 (VT/RD), harness side and ground.

Is voltage present?

Yes
REPAIR the circuit. TEST the system for normal operation.

No
GO to T6.

T6 CHECK CIRCUIT SBB32 (VT/RD) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between auxiliary relay box right third row power-fold seat relay terminal 87, circuit SBB32 (VT/RD), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to T7.

No
REPAIR the circuit. TEST the system for normal operation.

T7 CHECK CIRCUIT SBB32 (VT/RD) FOR AN OPEN

Measure the resistance between auxiliary relay box right third row power-fold seat relay terminal 87, circuit SBB32 (VT/RD), harness side and right third row power-fold seat control switch C4180-2, circuit SBB32 (VT/RD), harness side.

Is the resistance less than 5 ohms?

Yes
GO to T8.

No
REPAIR the circuit. TEST the system for normal operation.

T8 CHECK CIRCUIT GD151 (BK/GN) FOR AN OPEN

Key in OFF position.
Measure the resistance between auxiliary relay box right third row power-fold seat relay terminal 86, circuit GD151 (BK/GN), harness side and ground; and between right third row power-fold seat control switch C4180-6, circuit GD151 (BK/GN), harness side and ground.

Is the resistance less than 5 ohms?

Yes
GO to T9.

No
REPAIR the circuit. TEST the system for normal operation.

T9 CHECK RIGHT THIRD ROW POWER-FOLD SEAT CONTROL SWITCH

Using the following table to check the right power-fold seat switch, measure the resistance between the switch pins, component side, while pressing the switch buttons in the indicated position and compare the results to the table.

Switch Position	Pins	Ohms
Up	2 and 5	Less than 5
Down	2 and 5	Greater than 10,000
Down	2 and 1	Less than 5
Up	2 and 1	Greater than 10,000
Up and at Rest	1 and 6	Less than 5
Down	1 and 6	Greater than 10,000
Down and at Rest	5 and 6	Less than 5
Up	5 and 6	Greater than 10,000

Is the switch OK?

Yes
GO to T10.

No
INSTALL a new switch. REFER to Seat Control Switch — Third Row. TEST the system for normal operation.

T10 CHECK CIRCUIT CPS51 (VT/GY) AND CPS52 (YE/GN) FOR A SHORT TO POWER

Key in ON position.
Measure the voltage between right third row power-fold seat control switch C4180-5, circuit CPS51 (VT/GY) and C4180-1, circuit CPS52 (YE/GN) harness side and ground.

Is voltage present?

Yes
REPAIR the circuit(s). TEST the system for normal operation.

No
GO to T11.

T11 CHECK CIRCUIT CPS51 (VT/GY) AND CPS52 (YE/GN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between right third row power-fold seat control switch C4180-5, circuit CPS51 (VT/GY) and C4180-1, circuit CPS52 (YE/GN) harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to T12.

No
REPAIR the affected circuit. TEST the system for normal operation.

T12 CHECK CIRCUIT CPS51 (VT/GY) AND CPS52 (YE/GN) FOR AN OPEN

Disconnect: Right Third Row Power-Fold Seat Motor C4182.
Measure the resistance between right third row power-fold seat control switch C4180-5, circuit CPS51 (VT/GY), harness side and right third row power-fold seat motor C4182-1, circuit CPS51 (VT/GY) harness side; and between right third row power-fold seat control switch, C4180-1, circuit CPS52 (YE/GN), harness side and right third row power-fold seat motor C4182-2, circuit CPS52 (YE/GN), harness side.

Is the resistance less than 5 ohms?

Yes
INSTALL a new right third row power-fold seat motor. REFER to Power-Fold Seat Motor. TEST the system for normal operation.

No
REPAIR the circuit(s). TEST the system for normal operation.

Pinpoint Test U: DTC B103B/B1111 — Thermoelectric Driver Overcurrent Low/Driver Thermoelectric Device Control Overtemperature Fault

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Each driver and front passenger seat cushion is equipped with a thermo-electric device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED). Similarly, each driver and front passenger seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the CCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the EATC seat switch settings.

Possible Causes

A TED driver overcurrent low or device control overtemperature fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST U: DTC B103B/B1111 — THERMOELECTRIC DRIVER OVERCURRENT LOW/DRIVER THERMOELECTRIC DEVICE CONTROL OVERTEMPERATURE FAULT

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

U1 CHECK THE TED CIRCUITS FOR SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265a.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-G	CHS02 (YE/BU)
C3265a-H	RHS02 (BU/OG)
C3265a-J	CHS01 (GY/VT)
C3265a-K	RHS01 (WH/VT)

Are the resistances greater than 10,000 ohms?

Yes
GO to U2.

No
If the resistances of C3265a-G, circuit CHS02 (YE/BU) and/or C3265a-H, circuit RHS02 (BU/OG) to ground were not greater than 10,000 ohms to ground, GO to U6 .

If resistances of C3265a-J, circuit CHS01 (GY/VT) and/or C3265a-K, circuit RHS01 (WH/VT) to ground were not greater than 10,000 ohms to ground, GO to U7 .

U2 CHECK THE TED CIRCUITS FOR SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-G	CHS02 (YE/BU)
C3265a-H	RHS02 (BU/OG)
C3265a-J	CHS01 (GY/VT)
C3265a-K	RHS01 (WH/VT)

Are the voltages less than one volt?

No
GO to U3.

No
If the voltages measured at C3265a-G and/or C3265a-H were not less than one volt, GO to U8 .

If voltages measured at C3265a-J and/or C3265a-K were not less than one volt, GO to U9 .

U3 CHECK THE TED RESISTANCE

Key in OFF position.
CAUTION: Make sure the TEDs are at room temperature and there is no air blowing across the TEDs. Do not handle a TED when measuring resistance. These conditions can cause incorrect readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265a-G, circuit CHS02 (YE/BU), harness side and CCSM C3265a-H, circuit RHS02 (BU/OG), harness side; and between CCSM C3265a-J, circuit CHS01 (GY/VT), harness side and C3265a-K, circuit RHS01 (WH/VT), harness die and ground.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new CCSM. REFER to Climate Controlled Seat Module. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
If the resistance between CCSM C3265a-G and C3265a-H was not between 0.9 and 10 ohms, GO to U5 .

If the resistance between CCSM C3265a-J and C3265a-K was not between 0.9 and 10 ohms, GO to U4 .

U4 CHECK THE RESISTANCE OF THE BACKREST TED

Disconnect: Backrest TED C3034.
Measure the resistance between backrest TED C3034 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

U5 CHECK THE RESISTANCE OF THE CUSHION TED

Disconnect: Cushion TED C3035.
Measure the resistance between cushion TED C3035 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

U6 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO GROUND

Disconnect: Cushion TED C3035.
Measure the resistance between CCSM C3265a-G, circuit CHS02 (YE/BU), harness side and ground and between C3265a-H, circuit RHS02 (BU/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

U7 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO GROUND

Disconnect: Backrest TED C3034.
Measure the resistance between CCSM C3265a-J, circuit CHS01 (GY/VT), harness side and ground and between C3265a-K, circuit RHS01 (WH/VT), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

U8 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO VOLTAGE

Key in OFF position.
Disconnect: Cushion TED C3035.
Key in ON position.
Measure the voltage between CCSM C3265a-G, circuit CHS02 (YE/BU), harness side and ground and between C3265a-H, circuit RHS02 (BU/OG), harness side and ground.

Are the voltages less than one volt?

U9 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO VOLTAGE

Key in OFF position.
Disconnect: Backrest TED C3034.
Key in ON position.
Measure the voltage between CCSM C3265a-J, circuit CHS01 (GY/VT), harness side and ground and between C3265a-K, circuit RHS01 (WH/VT), harness side and ground.

Are the voltages less than one volt?

Pinpoint Test V: DTC B103C — Thermoelectric Driver Open Load

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A TED driver open load fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST V: DTC B103C — THERMOELECTRIC DRIVER OPEN LOAD

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

V1 CHECK THE TED CIRCUITS FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265a.
Disconnect: Cushion TED C3035.
Disconnect: Backrest TED C3034.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance of the following circuits.

CCSM Connector-Pin	Circuit	TED Connector-Pin
C3265a-G	CHS02 (YE/BU)	C3035-1
C3265a-H	RHS02 (BU/OG)	C3035-3
C3265a-J	CHS01 (GY/VT)	C3034-1
C3265a-K	RHS01 (WH/VT)	C3034-3

Are the resistances less than 5 ohms?

Yes
GO to V2.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

V2 CHECK THE TED CIRCUITS FOR SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-G	CHS02 (YE/BU)
C3265a-H	RHS02 (BU/OG)
C3265a-J	CHS01 (GY/VT)
C3265a-K	RHS01 (WH/VT)

Is voltage present on any circuit?

V3 CHECK RESISTANCE OF THE TEDs

Key in OFF position.
Measure the resistance between backrest TED C3034 pin 1 and pin 3, component side and between cushion TED C3034 pin 1 and pin 3, component side.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
If the resistance of the backrest TED was not between 0.9 and 10 ohms, INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

If the resistance of the cushion TED was not between 0.9 and 10 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test W: DTC B103D — Blower Driver Overtemperature

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A blower overtemperature fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST W: DTC B103D — BLOWER DRIVER OVERTEMPERATURE

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
W1 CHECK THE BLOWER CIRCUIT FOR AN OPEN
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052. Disconnect: CCSM C3265c. Disconnect: Cushion TED C3035. Disconnect: Backrest TED C3034. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to W2. No REPAIR the affected circuit. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
W2 CHECK THE BLOWER CIRCUITS FOR A SHORT
Measure the resistance between CCSM C3265c-15, circuit CHS03 (GN/BN), harness side and C3265c-16, circuit CHS13 (VT/BN), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to W3. No REPAIR the affected circuits. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
W3 CHECK THE BLOWER RESISTANCE
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty. Measure the resistance between cushion TED C3035 pin 2 and pin 4, component side and between backrest TED C3034 pin 2 and pin 4, component side. Are the resistances between 6,000 ohms and 9,000 ohms?	Yes INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. No If the resistance of the cushion TED was not between 6,000 and 9,000 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs. If the resistance of the backrest TED was not between 6,000 and 9,000 ohms, INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test X: DTC B1113/B111B — Passenger Thermoelectric Device Control Overtemperature Fault/Passenger Thermoelectric Driver Overcurrent Low

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A TED device control overtemperature or overcurrent low fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST X: DTC B1113/B111B — PASSENGER THERMOELECTRIC DEVICE CONTROL OVERTEMPERATURE FAULT/PASSENGER THERMOELECTRIC DRIVER OVERCURRENT LOW

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

X1 CHECK THE TED CIRCUITS FOR SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265a.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-A	CHS07 (GY/BU)
C3265a-B	RHS07 (BU)
C3265a-C	CHS06 (BU/BN)
C3265a-D	RHS06 (WH)

Are the resistances greater than 10,000 ohms?

Yes
GO to X2.

No
If the resistances of C3265a-A and/or C3265a-B to ground were not greater than 10,000 ohms to ground, GO to X6 .

If resistances of C3265a-C and/or C3265a-D to ground were not greater than 10,000 ohms to ground, GO to X7 .

X2 CHECK THE TED CIRCUITS FOR SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-A	CHS07 (GY/BU)
C3265a-B	RHS07 (BU)
C3265a-C	CHS06 (BU/BN)
C3265a-D	RHS06 (WH)

Are the voltages less than one volt?

No
GO to X3.

No
If the voltages measured at C3265a-A and/or C3265a-B were not less than one volt, GO to X8 .

If voltages measured at C3265a-C and/or C3265a-D were not less than one volt, GO to X9 .

X3 CHECK THE TED RESISTANCE

Key in OFF position.
CAUTION: Make sure the TEDs are at room temperature and there is no air blowing across the TEDs. Do not handle a TED when measuring resistance. These conditions can cause incorrect readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265a-A, circuit CHS07 (GY/BU), harness side and CCSM C3265a-B, circuit RHS07 (BU), harness side; and between CCSM C3265a-C, circuit CHS06 (BU/BN), harness side and C3265a-D, circuit RHS06 (WH), harness side and ground.

Are the resistances between 0.9 and 10 ohms?

X4 CHECK THE RESISTANCE OF THE BACKREST TED

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

X5 CHECK THE RESISTANCE OF THE CUSHION TED

Disconnect: Cushion TED C3040.
Measure the resistance between cushion TED C3040 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

X6 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO GROUND

Disconnect: Cushion TED C3040.
Measure the resistance between CCSM C3265a-A, circuit CHS07 (GY/BU), harness side and ground and between C3265a-B, circuit RHS07 (BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

X7 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO GROUND

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
Measure the resistance between CCSM C3265a-C, circuit CHS06 (BU/BN), harness side and ground and between C3265a-D, circuit RHS06 (WH), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

X8 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO VOLTAGE

Key in OFF position.
Disconnect: Cushion TED C3040.
Key in ON position.
Measure the voltage between CCSM C3265a-A, circuit CHS07 (GY/BU), harness side and ground and between C3265a-B, circuit RHS07 (BU), harness side and ground.

Are the voltages less than one volt?

Yes
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

X9 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO VOLTAGE

Key in OFF position.
Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
Key in ON position.
Measure the voltage between CCSM C3265a-C, circuit CHS06 (BU/BN), harness side and ground and between C3265a-D, circuit RHS06 (WH), harness side and ground.

Are the voltages less than one volt?

Yes
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test Y: DTC B111C — Passenger Thermoelectric Driver Open Load

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A TED driver open load fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST Y: DTC B111C — PASSENGER THERMOELECTRIC DRIVER OPEN LOAD

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

Y1 CHECK THE TED CIRCUITS FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265a.
Disconnect: Cushion TED C3040.
Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance of the following circuits.

CCSM Connector-Pin	Circuit	TED Connector-Pin
C3265a-A	CHS07 (GY/BU)	C3040-1
C3265a-B	RHS07 (BU)	C3040-3
C3265a-C	CHS06 (BU/BN) and CHS01 (GY/VT) (10-Way Power Seat)	C3039-1 (10-Way Power Seat) or C3316-1 (6-Way Power Seat)
C3265a-D	RHS06 (WH) and RHS01 (WH/VT) (10-Way Power Seat)	C3039-3 (10-Way Power Seat) or C3316-3 (6-Way Power Seat)

Are the resistances less than 5 ohms?

Yes
GO to Y2.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Y2 CHECK THE TED CIRCUITS FOR SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between the following CCSM C3265a pins, harness side and ground.

Connector-Pin	Circuit
C3265a-A	CHS07 (GY/BU)
C3265a-B	RHS07 (BU)
C3265a-C	CHS06 (BU/BN)
C3265a-D	RHS06 (WH)

Is voltage present on any circuit?

Y3 CHECK RESISTANCE OF THE TEDs

Key in OFF position.
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 1 and pin 3, component side and between cushion TED C3040 pin 1 and pin 3, component side.

Are the resistances between 0.9 and 10 ohms?

Yes
INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
If the resistance of the backrest TED was not between 0.9 and 10 ohms, INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

If the resistance of the cushion TED was not between 0.9 and 10 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test Z: DTC B111D — Passenger Blower Driver Overtemperature

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A blower overtemperature fault can be caused by:

wiring, terminals or connectors.
a faulted TED assembly.
a faulted CCSM.

PINPOINT TEST Z: DTC B111D — PASSENGER BLOWER DRIVER OVERTEMPERATURE

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step	Result / Action to Take
Z1 CHECK THE BLOWER CIRCUIT FOR AN OPEN
Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B. Disconnect passenger seat safety belt buckle pretensioner C3050. Disconnect passenger seat side air bag C3052. Disconnect: CCSM C3265c. Disconnect: Cushion TED C3040. Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat). WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Connect the battery ground cable. Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes GO to Z2. No REPAIR the affected circuit. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
Z2 CHECK THE BLOWER CIRCUITS FOR A SHORT
Measure the resistance between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and C3265c-8, circuit CHS14 (GN), harness side. Is the resistance greater than 10,000 ohms?	Yes GO to Z3. No REPAIR the affected circuits. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.
Z3 CHECK THE BLOWER RESISTANCE
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty. Measure the resistance between cushion TED C3040 pin 2 and pin 4, component side and between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 2 and pin 4, component side. Are the resistances between 6,000 ohms and 9,000 ohms?	Yes INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs. No If the resistance of the cushion TED was not between 6,000 and 9,000 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs. If the resistance of the backrest TED was not between 6,000 and 9,000 ohms, INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052. REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AA: DTC B2729 — Driver Cushion Over-Temp Detected

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A driver seat cushion over-temp fault can be caused by:

wiring, terminals or connectors.
restricted cushion TED filter.
crushed or restricted cushion foam pad.
crushed or restricted climate controlled seat manifold.
a faulted cushion TED assembly.
a faulted CCSM.

PINPOINT TEST AA: DTC B2729 — DRIVER CUSHION OVER-TEMP DETECTED

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AA1 CHECK THE CCSM FOR ON-DEMAND DTCs

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B2729 retrieved during the on-demand self test?

Yes
GO to AA2.

No
GO to AA4.

AA2 CHECK THE TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
Disconnect: Cushion TED C3035.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265b-7, circuit VHS26 (VT), harness side and ground and between CCSM C3265b-8, circuit RHS05 (YE/VT), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AA3.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA3 CHECK THE TED THERMISTOR

Measure the resistance between cushion TED C3035 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected open circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA4 CONFIRM THE FAULT

Verify with the customer that the concern is the seat shuts OFF in HEAT mode.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH HEAT for at least 15 minutes.
Is the customer concern with the seat shutting OFF in HEAT mode or was the fault recreated?

Yes
GO to AA5.

No
Fault not present. Fault may have been set due to a past failure or incorrect use of the climate controlled seat system by repeated switching between HEAT and COOL modes. REPEAT the self-test. CLEAR the DTCs.

AA5 CHECK OPERATION OF THE SEAT

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Compare the airflow from the driver seat cushion and compare it to the airflow from the passenger seat cushion.
Is the airflow exhausting from the driver seat cushion comparable to the airflow exhausting from the passenger seat cushion?

Yes
GO to AA14.

No
GO to AA6.

AA6 CHECK THE CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Key in OFF position.
Inspect the blower of the cushion TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. REPEAT the self-test. CLEAR the DTCs.

No
GO to AA7.

AA7 CHECK THE CUSHION FAN OPERATION

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Inspect the cushion blower for operation.
Does the cushion blower operate?

Yes
GO to AA14.

No
GO to AA8.

AA8 CHECK THE BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265c.
Disconnect: Cushion TED C3035.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265c-11, circuit CHS03 (GN/BN), harness side and cushion TED C3035-7, circuit CHS03 (GN/BN), harness side.

Is the resistance less than 5 ohms?

Yes
GO to AA9.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA9 CHECK THE BLOWER CIRCUIT CHS03 (GN/BN) FOR A SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between CCSM C3265c-15, circuit CHS03 (GN/BN), harness side and ground.

Yes REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs. DISCONNECT the bat

Is voltage greater than 1 volt?

AA10 CHECK THE BLOWER CIRCUIT CHS13 (VT/BN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AA11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA11 CHECK THE BLOWER CIRCUITS CHS13 (VT/BN) AND CHS03 (GN/BN) FOR AN OPEN

Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and cushion TED C3035-2, circuit CHS13 (VT/BN), harness side; and between CCSM C3265c-15, circuit CHS03 (GN/BN), harness side and cushion TED C3035-4, circuit CHS03 (GN/BN), harness side.

Are the resistances less than 5 ohms?

Yes
GO to AA12.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA12 CHECK THE BLOWER RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AA13.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA13 CHECK THE BLOWER SPEED CONTROL RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AA14.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AA14 CHECK THE TED INSTALLATION AND FOR CRUSHED SEAT CUSHION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front, 40 Percent in this section.
Inspect the seat cushion for the following:

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
CONNECT the battery ground cable.

INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
CORRECTLY install the cushion TED or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AB: DTC B272A — Passenger Cushion Over-Temp Detected

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A passenger seat cushion over-temp fault can be caused by:

wiring, terminals or connectors.
restricted cushion TED filter.
crushed or restricted cushion foam pad.
crushed or restricted climate controlled seat manifold.
a faulted cushion TED assembly.
a faulted CCSM.

PINPOINT TEST AB: DTC B272A — PASSENGER CUSHION OVER-TEMP DETECTED

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AB1 CHECK THE CCSM FOR ON-DEMAND DTCS

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B272A retrieved during the on-demand self test?

Yes
GO to AB2.

No
GO to AB4.

AB2 CHECK THE TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
Disconnect: Cushion TED C3040.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265b-2, circuit VHS27 (WH/OG), harness side and ground and between CCSM C3265b-3, circuit RHS10 (BU/OG), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AB3.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB3 CHECK THE TED THERMISTOR

Measure the resistance between cushion TED C3040 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected open circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB4 CONFIRM THE FAULT

Verify with the customer that the concern is the seat shuts OFF in HEAT mode.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
Attempt to recreate the fault. Start the vehicle and set the passenger seat to HIGH HEAT for at least 15 minutes.
Is the customer concern with the seat shutting OFF in HEAT mode or was the fault recreated?

Yes
GO to AB5.

No
Fault not present. Fault may have been set due to a past failure or incorrect use of the climate controlled seat system by repeated switching between HEAT and COOL modes. REPEAT the self-test. CLEAR the DTCs.

AB5 CHECK OPERATION OF THE SEAT

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Compare the airflow from the passenger seat cushion and compare it to the airflow from the driver seat cushion.
Is the airflow exhausting from the passenger seat cushion comparable to the airflow exhausting from the driver seat cushion?

Yes
GO to AB14.

No
GO to AB6.

AB6 CHECK THE CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Key in OFF position.
Inspect the blower of the cushion TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. REPEAT the self-test. CLEAR the DTCs.

No
GO to AB7.

AB7 CHECK THE CUSHION FAN OPERATION

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Inspect the cushion blower for operation.
Does the cushion blower operate?

Yes
GO to AB14.

No
GO to AB8.

AB8 CHECK THE BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265c.
Disconnect: Cushion TED C3040.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265c-3, circuit RHS08 (VT/WH), harness side and cushion TED C3040-7, circuit RHS08 (VT/WH), harness side.

Is the resistance less than 5 ohms?

Yes
GO to AB9.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB9 CHECK THE BLOWER CIRCUIT CHS08 (BN/YE) FOR A SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and ground.

Is voltage greater than 1 volt?

AB10 CHECK THE BLOWER CIRCUIT CHS14 (GN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AB11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB11 CHECK THE BLOWER CIRCUITS CHS14 (GN) AND CHS08 (BN/YE) FOR AN OPEN

Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and cushion TED C3040-2, circuit CHS14 (GN), harness side; and between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and cushion TED C3040-4, circuit CHS08 (BN/YE), harness side.

Are the resistances less than 5 ohms?

Yes
GO to AB12.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB12 CHECK THE BLOWER RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3040 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AB13.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB13 CHECK THE BLOWER SPEED CONTROL RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3040 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AB14.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AB14 CHECK THE TED INSTALLATION AND FOR CRUSHED SEAT CUSHION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front, 40 Percent in this section.
Inspect the seat cushion for the following:

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
CONNECT the battery ground cable.

INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
CORRECTLY install the cushion TED or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AC: DTC B272B — Passenger Back Over-Temp Detected

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A driver seat backrest over-temp fault can be caused by:

wiring, terminals or connectors.
restricted backrest TED filter.
crushed or restricted backrest foam pad.
crushed or restricted climate controlled seat manifold.
a faulted backrest TED assembly.
a faulted CCSM.

PINPOINT TEST AC: DTC B272B — PASSENGER BACK OVER-TEMP DETECTED

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AC1 CHECK THE CCSM FOR ON-DEMAND DTCs

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B2730 retrieved during the on-demand self test?

Yes
GO to AC2.

No
GO to AC4.

AC2 CHECK THE TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265b-4, circuit VHS36 (YE/BU), harness side and ground and between CCSM C3265b-5, circuit RHS20 (GN/BU), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AC3.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC3 CHECK THE TED THERMISTOR

Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected open circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC4 CONFIRM THE FAULT

Verify with the customer that the concern is the seat shuts OFF in HEAT mode.
NOTE: A crushed seat backrest foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
Attempt to recreate the fault. Start the vehicle and set the front passenger seat to HIGH HEAT for at least 15 minutes.
Is the customer concern with the seat shutting OFF in HEAT mode or was the fault recreated?

Yes
GO to AC5.

No
Fault not present. Fault may have been set due to a past failure or incorrect use of the climate controlled seat system by repeated switching between HEAT and COOL modes. REPEAT the self-test. CLEAR the DTCs.

AC5 CHECK OPERATION OF THE SEAT

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Compare the airflow from the front passenger seat backrest and compare it to the airflow from the driver seat backrest.
Is the airflow exhausting from the front passenger seat backrest comparable to the airflow exhausting from the driver seat backrest?

Yes
GO to AC14.

No
GO to AC6.

AC6 CHECK THE BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Key in OFF position.
Inspect the blower of the backrest TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. REPEAT the self-test. CLEAR the DTCs.

No
GO to AC7.

AC7 CHECK THE BACKREST FAN OPERATION

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Inspect the backrest blower for operation.
Does the backrest blower operate?

Yes
GO to AC14.

No
GO to AC8.

AC8 CHECK THE BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265c.
Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
For 10-way power seat, measure the resistance between CCSM C3265c-4, circuit CHS09 (GY), harness side and backrest TED C3039-7, circuit CHS04 (YE/GY), harness side.

For 6-way power seat, measure the resistance between CCSM C3265c-4, circuit CHS09 (GY), harness side and backrest TED C3316-7, circuit CHS09 (GY), harness side.
Is the resistance less than 5 ohms?

Yes
GO to AC9.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC9 CHECK THE BLOWER CIRCUIT CHS08 (BN/YE) FOR A SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and ground.

Is voltage greater than 1 volt?

AC10 CHECK THE BLOWER CIRCUIT CHS14 (GN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AC11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

If equipped, CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC11 CHECK THE BLOWER CIRCUITS CHS14 (GN) AND CHS08 (BN/YE) FOR AN OPEN

For 10-way power seat, measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and backrest TED C3039-2, circuit CHS13 (VT/BN), harness side; and between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and backrest TED C3039-4, circuit CHS03 (GN/BN), harness side.

For 6-way power seat, measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and backrest TED C3316-2, circuit CHS14 (GN), harness side; and between CCSM C3265c-7, circuit CHS08 (BN/YE), harness side and backrest TED C3316-4, circuit CHS08 (BN/YE), harness side.
Are the resistances less than 5 ohms?

Yes
GO to AC12.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC12 CHECK THE BLOWER RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AC13.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC13 CHECK THE BLOWER SPEED CONTROL RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AC14.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AC14 CHECK THE TED INSTALLATION AND FOR CRUSHED SEAT BACKREST

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front, 40 Percent in this section.
Inspect the seat backrest for the following:

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
CONNECT the battery ground cable.

INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
CORRECTLY install the backrest TED or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AD: DTC B272C — Driver Differential Temperature Fault

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

A differential fault occurs when the cushion and backrest TEDs on the seat are reporting temperatures to the CCSM with a difference between them of 60°C (108°F) or greater. This can result from an airflow restriction or a circuit fault at either TED. If a TED and manifold is clear of obstruction and is operational, the other TED and circuitry on the seat should be checked. It is important to note that a TED with a higher temperature may be operating correctly and not the area of concern. The other TED may be indicating a much lower temperature, causing the DTC to set.

Possible Causes

A driver differential temperature fault can be caused by:

wiring, terminals or connectors.
restricted cushion or backrest TED filter.
crushed or restricted cushion or backrest foam pad.
crushed or restricted cushion or backrest climate controlled seat manifold.
a faulted cushion or backrest TED assembly.
a faulted CCSM.

PINPOINT TEST AD: DTC B272C — DRIVER DIFFERENTIAL TEMPERATURE FAULT

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AD1 CHECK THE CCSM FOR ON-DEMAND DTCs

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B2729 or B2730 retrieved during the on-demand self test or as a continuous DTC?

Yes
For DTC B2729, Go To Pinpoint Test AA. For DTC B2730, Go To Pinpoint Test AF.

No
GO to AD2.

AD2 MONITOR THE CCSM TED TEMPERATURE PIDs

Enter the following diagnostic mode on the diagnostic tool: Datalogger/CCSM PIDs:.

Passenger Cushion Thermal Electric Device (TED) Temperature

Passenger Back Thermal Electric Device (TED) Temperature

Cushion Thermal Electric Device (TED) Temperature

Back Thermal Electric Device (TED) Temperature

CAUTION: Make sure the temperature of the climate controlled seats has stabilized before monitoring the PIDs.
Monitor the TED temperature PIDs with the climate controlled seats OFF. Compare the PID values of the driver seat to those of the front passenger seat, this can help identify if there is a concern with the driver seat cushion or backrest PID value readings.
Are both driver seat TED temperature PID values within 10°C (18°F) of the ambient temperature?

Yes
GO to AD3.

No
If the driver seat cushion PID value varies 10°C (18°F) or more from ambient temperature, GO to AD16 .

If the driver seat backrest PID value varies 10°C (18°F) or more from ambient temperature, GO to AD31 .

AD3 CONFIRM THE FAULT IS IN THE SEAT CUSHION OR THE BACKREST

Key in OFF position.
Key in ON position.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
After cycling the ignition switch and with the engine running, set the driver seat to HIGH HEAT. Allow the seat to heat for at least 15 minutes while monitoring the TED temperature PIDs of the driver seat.
Do the driver seat cushion or backrest PID values vary more than 60°C (108°F)?

Yes
If the driver seat cushion PID value is 60°C (108°F) hotter than the backrest PID value, GO to AD5.

If the driver seat backrest PID value is 60°C (108°F) hotter than the cushion PID value, GO to AD20.

No
GO to AD4.

AD4 CHECK THE TEDS COOLING PERFORMANCE

Check the TEDs cooling performance on the affected seat. Refer to Component Test — Thermo-Electric Device (TED) Cooling Performance in this section.
Did the TEDs pass the component test?

Yes
The DTC may have been set by extreme cabin temperatures or excessive sun-load on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.

No
CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED, manifold, plenum, air ducts and foam pad). CHECK for airflow restrictions (TED inlets and outlets, TED-to-manifold or plenum connections, filters and ducts) and REPAIR as needed. CHECK for an intermittent wiring fault. REPAIR as needed. REPEAT the self-test. CLEAR the DTCs.

AD5 CHECK THE TED INSTALLATION AND FOR A CRUSHED SEAT CUSHION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front, 40 Percent in this section.
Inspect the seat cushion for the following:

Is the cushion blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
GO to AD6.

No
CORRECTLY install the cushion TED or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

REPOWER the SRS. REFER to Section 501-20B.

AD6 CHECK BACKREST TED CIRCUIT RHS01 (WH/VT) FOR SHORT TO VOLTAGE

Disconnect: CCSM C3265a.
NOTE: Do not connect the safety belt buckle pretensioner or seat side air bag electrical connectors at this time.
Position the driver seat in the vehicle and connect the seat-to-floor connectors.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265a-K, circuit RHS01 (WH/VT), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AD7.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD7 CHECK BACKREST TED CIRCUIT CHS01 (GY/VT) FOR SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265a-J, circuit CHS01 (GY/VT), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AD8.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD8 CHECK RESISTANCE OF THE BACKREST TED AND WIRING

Measure the resistance between CCSM C3265a-J, circuit CHS01 (GY/VT), harness side and CCSM C3265a-K, circuit RHS01 (WH/VT), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AD10.

No
GO to AD9.

AD9 CHECK RESISTANCE OF THE BACKREST TED

Disconnect: Backrest TED C3034.
Measure the resistance between backrest TED C3034 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

If equipped, CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD10 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: CCSM C3265c.
Key in ON position.
Measure the voltage between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground and between CCSM C3265c-11, circuit CHS03 (GN/BN), harness side and ground.

Are the voltages less than one volt?

Yes
GO to AD11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD11 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground and between CCSM C3265c-11, circuit CHS03 (GN/BN), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AD12.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD12 CHECK THE BLOWER AND WIRING

CAUTION: The ohmmeter must be connected with the positive lead to CCSM C3265c-16, circuit CHS13 (VT/BN) and the negative lead to CCSM C3265c-15, circuit CHS03 (GN/BN) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and CCSM C3265c-15, circuit CHS03 (GN/BN), harness side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AD14.

No
GO to AD13.

AD13 CHECK THE BLOWER

Disconnect: Cushion TED C3035.
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD14 CHECK BLOWER SPEED CONTROL AND CIRCUIT

CAUTION: The ohmmeter must be connected with the positive lead to C3265c-11, circuit CHS03 (GN/BN), harness side and the negative lead to C3265c-15, circuit CHS03 (GN/BN), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-11, circuit CHS03 (GN/BN) harness side and CCSM C3265c-15, circuit CHS03 (GN/BN), harness side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AD16.

No
GO to AD15.

AD15 CHECK THE BLOWER SPEED CONTROL

Disconnect: Cushion TED C3035.
CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3035 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD16 CHECK THERMISTOR CIRCUIT FOR A SHORT TO VOLTAGE

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265b-7, circuit VHS26 (VT), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AD17.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD17 CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265b-7, circuit VHS26 (VT), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AD18.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD18 CHECK THE THERMISTOR AND WIRING

Measure the resistance between CCSM C3265b-7, circuit VHS26 (VT), harness side and CCSM C3265b-8, circuit RHS05 (YE/VT), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AD19 CHECK THE THERMISTOR

Disconnect: Cushion TED C3035.
Measure the resistance between cushion TED pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD20 CHECK THE TED INSTALLATION AND FOR A CRUSHED SEAT BACKREST

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front, 40 Percent in this section.
Inspect the seat backrest for the following:

Is the backrest blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
GO to AD21.

No
CORRECTLY install the backrest TED or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

REPOWER the SRS. REFER to Section 501-20B.

AD21 CHECK THE CUSHION TED CIRCUIT RHS02 (BU/OG) FOR SHORT TO VOLTAGE

Disconnect: CCSM C3265a.
NOTE: Do not connect the safety belt buckle pretensioner or seat side air bag electrical connectors at this time.
Position the driver seat in the vehicle and connect the seat-to-floor connectors.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265a-H, circuit RHS02 (BU/OG), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AD22.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD22 CHECK THE CUSHION TED CIRCUIT CHS02 (YE/BU) FOR SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265a-G, circuit CHS02 (YE/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AD23.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD23 CHECK RESISTANCE OF THE CUSHION TED AND WIRING

Measure the resistance between CCSM C3265a-G circuit CHS02 (YE/BU), harness side and CCSM C3265a-H, circuit RHS02 (BU/OG), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AD25.

No
GO to AD24.

AD24 CHECK RESISTANCE OF THE CUSHION TED

Disconnect: Cushion TED C3035.
Measure the resistance between cushion TED C3035 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD25 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: CCSM C3265c.
Key in ON position.
Measure the voltage between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground and between CCSM C3265c-12, circuit CHS04 (YE/GN), harness side and ground.

Are the voltages less than one volt?

Yes
GO to AD26.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD26 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground and between CCSM C3265c-12, circuit CHS04 (YE/GN), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AD27.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD27 CHECK THE BLOWER AND WIRING

CAUTION: The ohmmeter must be connected with the positive lead to CCSM C3265c-16, circuit CHS13 (VT/BN) and the negative lead to CCSM C3265c-15, circuit CHS03 (GN/BN) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and CCSM C3265c-15, circuit CHS03 (GN/BN), harness side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AD29.

No
GO to AD28.

AD28 CHECK THE BLOWER

Disconnect: Backrest TED C3034.
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD29 CHECK BLOWER SPEED CONTROL AND CIRCUIT

CAUTION: The ohmmeter must be connected with the positive lead to C3265c-12, circuit CHS04 (YE/GN), harness side and the negative lead to C3265c-15, circuit CHS03 (GN/BN), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-12, circuit CHS04 (YE/GN) harness side and CCSM C3265c-15, circuit CHS03 (GN/BN), harness side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AD31.

No
GO to AD30.

AD30 CHECK THE BLOWER SPEED CONTROL

Disconnect: Backrest TED C3034.
CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD31 CHECK THERMISTOR CIRCUIT FOR A SHORT TO VOLTAGE

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265b-9, circuit VHS35 (VT/OG), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AD32.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD32 CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265b-9, circuit VHS35 (VT/OG), harness side and ground.

Is the resistance greater than 10,000 volts?

Yes
GO to AD33.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AD33 CHECK THE THERMISTOR AND WIRING

Measure the resistance between CCSM C3265b-9, circuit VHS35 (VT/OG), harness side and CCSM C3265b-10, circuit RHS15 (GY/BN), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AD34 CHECK THE THERMISTOR

Disconnect: Backrest TED C3034.
Measure the resistance between backrest TED pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AE: DTC B272D — Passenger Differential Temperature Fault

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A driver differential temperature fault can be caused by:

wiring, terminals or connectors.
restricted cushion or backrest TED filter.
crushed or restricted cushion or backrest foam pad.
crushed or restricted cushion or backrest climate controlled seat manifold.
a faulted cushion or backrest TED assembly.
a faulted CCSM.

PINPOINT TEST AE: DTC B272D — PASSENGER DIFFERENTIAL TEMPERATURE FAULT

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AE1 CHECK THE CCSM FOR ON-DEMAND DTCs

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B272A or B272B retrieved during the on-demand self test or as a continuous DTC?

Yes
For DTC B272A, Go To Pinpoint Test AB. For DTC B272B, Go To Pinpoint Test AC.

No
GO to AE2.

AE2 MONITOR THE CCSM TED TEMPERATURE PIDs

Enter the following diagnostic mode on the diagnostic tool: Datalogger/CCSM PIDs:.

Passenger Cushion Thermal Electric Device (TED) Temperature

Passenger Back Thermal Electric Device (TED) Temperature

Cushion Thermal Electric Device (TED) Temperature

Back Thermal Electric Device (TED) Temperature

CAUTION: Make sure the temperature of the climate controlled seats has stabilized before monitoring the PIDs.
Monitor the TED temperature PIDs with the climate controlled seats OFF. Compare the PID values of the front passenger seat to those of the driver seat, this can help identify if there is a concern with the front passenger seat cushion or backrest PID value readings.
Are both front passenger seat TED temperature PID values within 10°C (18°F) of the ambient temperature?

Yes
GO to AE3.

No
If the front passenger seat cushion PID value varies 10°C (18°F) or more from ambient temperature, GO to AE16 .

If the front passenger seat backrest PID value varies 10°C (18°F) or more from ambient temperature, GO to AE31 .

AE3 CONFIRM THE FAULT IS IN THE SEAT CUSHION OR THE BACKREST

Key in OFF position.
Key in ON position.
NOTE: A crushed seat cushion foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
After cycling the ignition switch and with the engine running, set the driver seat to HIGH HEAT. Allow the seat to heat for at least 15 minutes while monitoring the TED temperature PIDs of the driver seat.
Do the front passenger seat cushion or backrest PID values vary more than 60°C (108°F)?

Yes
If the front passenger seat cushion PID value is 60°C (108°F) hotter than the backrest PID value, GO to AE5.

If the front passenger seat backrest PID value is 60°C (108°F) hotter than the cushion PID value, GO to AE20.

No
GO to AE4.

AE4 CHECK THE TEDS COOLING PERFORMANCE

Check the TEDs cooling performance on the affected seat. Refer to Component Test — Thermo-Electric Device (TED) Cooling Performance.
Did the TEDs pass the component test?

AE5 CHECK THE TED INSTALLATION AND FOR A CRUSHED SEAT CUSHION

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat cushion trim cover. Refer to Seat Cushion Cover — Front, 40 Percent in this section.
Inspect the seat cushion for the following:

Is the cushion blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat cushion foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
GO to AE6.

No
CORRECTLY install the cushion TED or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE6 CHECK THE BACKREST TED CIRCUIT RHS06 (WH) FOR SHORT TO VOLTAGE

Disconnect: CCSM C3265a.
Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
Key in ON position.
Measure the voltage between CCSM C3265a-D, circuit RHS06 (WH), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AE7.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE7 CHECK THE BACKREST TED CIRCUIT CHS06 (BU/BN) FOR SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265a-C, circuit CHS06 (BU/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AE8.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE8 CHECK RESISTANCE OF THE BACKREST TED AND WIRING

Measure the resistance between CCSM C3265a-C, circuit CHS06 (BU/BN), harness side and CCSM C3265a-D, circuit RHS06 (WH), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AE10.

No
GO to AE9.

AE9 CHECK RESISTANCE OF THE BACKREST TED

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE10 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: CCSM C3265c.
Key in ON position.
Measure the voltage between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground and between CCSM C3265c-3, circuit RHS08 (VT/WH), harness side and ground.

Are the voltages less than one volt?

Yes
GO to AE11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE11 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground and between CCSM C3265c-3, circuit RHS08 (VT/WH), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AE12.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE12 CHECK THE BLOWER AND WIRING

CAUTION: The ohmmeter must be connected with the positive lead to CCSM C3265c-8, circuit CHS14 (GN) and the negative lead to CCSM C3265c-7, circuit CHS08 (BN/YE) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and CCSM C3265c-7, circuit CHS08 (BN/YE), harness side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AE14.

No
GO to AE13.

AE13 CHECK THE BLOWER

Disconnect: Cushion TED C3040.
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3040 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE14 CHECK BLOWER SPEED CONTROL AND CIRCUIT

CAUTION: The ohmmeter must be connected with the positive lead to C3265c-3, circuit RHS08 (VT/WH), harness side and the negative lead to C3265c-7, circuit CHS08 (BN/YE), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-3, circuit RHS08 (VT/WH) harness side and CCSM C3265c-7, circuit CHS08 (BN/YE), harness side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AE16.

No
GO to AE15.

AE15 CHECK THE BLOWER SPEED CONTROL

Disconnect: Cushion TED C3040.
CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between cushion TED C3040 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

AE16 CHECK THERMISTOR CIRCUIT FOR A SHORT TO VOLTAGE

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265b-2, circuit VHS27 (WH/OG), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AE17.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE17 CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265b-2, circuit VHS27 (WH/OG), harness side and ground.

Is the resistance greater than 10,000 volts?

Yes
GO to AE18.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE18 CHECK THE THERMISTOR AND WIRING

Measure the resistance between CCSM C3265b-2, circuit VHS27 (WH/OG), harness side and CCSM C3265b-3, circuit RHS10 (BU/OG), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AE19 CHECK THE THERMISTOR

Disconnect: Cushion TED C3040.
Measure the resistance between cushion TED pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AE20 CHECK THE TED INSTALLATION AND FOR A CRUSHED SEAT BACKREST

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front, 40 Percent in this section.
Inspect the seat backrest for the following:

Is the backrest blower obstructed?

Is the blower filter restricted or plugged?

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
GO to AE21.

No
CORRECTLY install the backrest TED or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

REPOWER the SRS. REFER to Section 501-20B.

AE21 CHECK CUSHION TED CIRCUIT RHS07 (BU) FOR SHORT TO VOLTAGE

Disconnect: CCSM C3265a.
NOTE: Do not connect the safety belt buckle pretensioner or seat side air bag electrical connectors at this time.
Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265a-B, circuit RHS07 (BU), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AE22.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE22 CHECK THE CUSHION TED CIRCUIT CHS07 (GY/BU) FOR SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265a-A, circuit CHS07 (GY/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AE23.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE23 CHECK RESISTANCE OF THE CUSHION TED AND WIRING

Measure the resistance between CCSM C3265a-A circuit CHS07 (GY/BU), harness side and CCSM C3265a-B, circuit RHS07 (BU), harness side.

Is the resistance between 0.9 and 10 ohms?

Yes
GO to AE25.

No
GO to AE24.

AE24 CHECK RESISTANCE OF THE CUSHION TED

Disconnect: Cushion TED C3040.
Measure the resistance between cushion TED C3040 pin 1 and pin 3, component side.

Is the resistance between 0.9 and 10 ohms?

Yes
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE25 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect: CCSM C3265c.
Key in ON position.
Measure the voltage between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground and between CCSM C3265c-4, circuit CHS09 (GY), harness side and ground.

Are the voltages less than one volt?

Yes
GO to AE26.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE26 CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and ground and between CCSM C3265c-4, circuit CHS09 (GY), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AE27.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. If equipped, CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE27 CHECK THE BLOWER AND WIRING

CAUTION: The ohmmeter must be connected with the positive lead to CCSM C3265c-8, circuit CHS14 (GN) and the negative lead to CCSM C3265c-7, circuit CHS08 (BN/YE) when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-8, circuit CHS14 (GN), harness side and CCSM C3265c-7, circuit CHS08 (BN/YE), harness side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AE29.

No
GO to AE28.

AE28 CHECK THE BLOWER

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE29 CHECK BLOWER SPEED CONTROL AND CIRCUIT

CAUTION: The ohmmeter must be connected with the positive lead to C3265c-4, circuit CHS09 (GY), harness side and the negative lead to C3265c-7, circuit CHS08 (BN/YE), harness side when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between CCSM C3265c-4, circuit CHS09 (GY) harness side and CCSM C3265c-7, circuit CHS08 (BN/YE), harness side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AE31.

No
GO to AE30.

AE30 CHECK THE BLOWER SPEED CONTROL

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3039 (10-way power seat) or C3316 (6-way power seat) pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE31 CHECK THERMISTOR CIRCUIT FOR A SHORT TO VOLTAGE

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect passenger seat safety belt buckle pretensioner C3050.
Disconnect passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Key in ON position.
Measure the voltage between CCSM C3265b-4, circuit VHS36 (YE/BU), harness side and ground.

Is the voltage less than 0.5 volt?

Yes
GO to AE32.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE32 CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265b-4, circuit VHS36 (YE/BU), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AE33.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AE33 CHECK THE THERMISTOR AND WIRING

Measure the resistance between CCSM C3265b-4, circuit VHS36 (YE/BU), harness side and CCSM C3265b-5, circuit RHS20 (GN/BU), harness side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

AE34 CHECK THE THERMISTOR

Disconnect: Backrest TED C3039 (10-Way Power Seat) or C3316 (6-Way Power Seat).
Measure the resistance between backrest TED pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected circuit(s). REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT passenger seat safety belt buckle pretensioner C3050. CONNECT passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

Pinpoint Test AF: DTC B2730 — Back Over-Temp Detected (Driver)

Refer to Wiring Diagrams Cell 119, Climate Controlled Seats for schematic and connector information.

Normal Operation

Possible Causes

A driver seat backrest over-temp fault can be caused by:

wiring, terminals or connectors.
restricted backrest TED filter.
crushed or restricted backrest foam pad.
crushed or restricted climate controlled seat manifold.
a faulted backrest TED assembly.
a faulted CCSM.

PINPOINT TEST AF: DTC B2730 — BACK OVER-TEMP DETECTED (DRIVER)

NOTE: The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Test Step

Result / Action to Take

AF1 CHECK THE CCSM FOR ON-DEMAND DTCs

Enter the following diagnostic mode on the diagnostic tool: Climate Controlled Seat Module (CCSM) Self Test/Retrieve DTCs.
Was DTC B2730 retrieved during the on-demand self test?

Yes
GO to AF2.

No
GO to AF4.

AF2 CHECK THE TED THERMISTOR CIRCUITS FOR A SHORT TO GROUND

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
Disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265b.
Disconnect: Backrest TED C3034.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265b-9, circuit VHS35 (VT/OG), harness side and ground and between CCSM C3265b-10, circuit RHS15 (GY/BN), harness side and ground.

Are the resistances greater than 10,000 ohms?

Yes
GO to AF3.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF3 CHECK THE TED THERMISTOR

Measure the resistance between backrest TED C3034 pin 5 and pin 8, component side. Note the ambient temperature and refer to the following table.

Temperature	Resistance
0-10°C (32-50°F)	2782-1663 ohms
10-20°C (50-68°F)	1837-1140 ohms
20-30°C (68-86°F)	1260-806 ohms
30-40°C (86-104°F)	893-570 ohms
40-50°C (104-122°F)	630-428 ohms

Is the resistance within the limits indicated?

Yes
REPAIR the affected open circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF4 CONFIRM THE FAULT

Verify with the customer that the concern is the seat shuts OFF in HEAT mode.
NOTE: A crushed seat backrest foam pad or a crushed climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH HEAT for at least 15 minutes.
Is the customer concern with the seat shutting OFF in HEAT mode or was the fault recreated?

Yes
GO to AF5.

No
Fault not present. Fault may have been set due to a past failure or incorrect use of the climate controlled seat system by repeated switching between HEAT and COOL modes. REPEAT the self-test. CLEAR the DTCs.

AF5 CHECK OPERATION OF THE SEAT

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Compare the airflow from the driver seat backrest and compare it to the airflow from the passenger seat backrest.
Is the airflow exhausting from the driver seat backrest comparable to the airflow exhausting from the passenger seat backrest?

Yes
GO to AF14.

No
GO to AF6.

AF6 CHECK THE BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER

Key in OFF position.
Inspect the blower of the backrest TED assembly for an obstruction or for a restricted filter.
Is the blower obstructed or the filter restricted?

Yes
REMOVE the obstruction or INSTALL a new filter. REPEAT the self-test. CLEAR the DTCs.

No
GO to AF7.

AF7 CHECK THE BACKREST FAN OPERATION

Key in ON position.
With the engine running, set both front seats to HIGH COOL.
Inspect the backrest blower for operation.
Does the backrest blower operate?

Yes
GO to AF14.

No
GO to AF8.

AF8 CHECK THE BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Disconnect driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.
If equipped, disconnect driver seat side air bag C3051 and passenger seat side air bag C3052.
Disconnect: CCSM C3265c.
Disconnect: Backrest TED C3034.
WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
Connect the battery ground cable.
Measure the resistance between CCSM C3265c-12, circuit CHS04 (YE/GN), harness side and backrest TED C3034-7, circuit CHS04 (YE/GN), harness side.

Is the resistance less than 5 ohms?

Yes
GO to AF9.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF9 CHECK THE BLOWER CIRCUIT CHS03 (GN/BN) FOR A SHORT TO VOLTAGE

Key in ON position.
Measure the voltage between CCSM C3265c-15, circuit CHS03 (GN/BN), harness side and ground.

Is voltage greater than 1 volt?

AF10 CHECK THE BLOWER CIRCUIT CHS13 (VT/BN) FOR A SHORT TO GROUND

Key in OFF position.
Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and ground.

Is the resistance greater than 10,000 ohms?

Yes
GO to AF11.

No
REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF11 CHECK THE BLOWER CIRCUITS CHS13 (VT/BN) AND CHS03 (GN/BN) FOR AN OPEN

Measure the resistance between CCSM C3265c-16, circuit CHS13 (VT/BN), harness side and backrest TED C3034-2, circuit CHS13 (VT/BN), harness side; and between CCSM C3265c-15, circuit CHS03 (GN/BN), harness side and backrest TED C3034-4, circuit CHS03 (GN/BN), harness side.

Are the resistances less than 5 ohms?

Yes
GO to AF12.

No
REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF12 CHECK THE BLOWER RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 2 and pin 4, component side.

Is the resistance between 6,000 ohms and 9,000 ohms?

Yes
GO to AF13.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF13 CHECK THE BLOWER SPEED CONTROL RESISTANCE

CAUTION: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.
Measure the resistance between backrest TED C3034 pin 7 and pin 4, component side.

Is the resistance between 290K ohms and 420K ohms?

Yes
GO to AF14.

No
INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device in this section. REPEAT the self-test. CLEAR the DTCs.

DISCONNECT the battery ground cable. CONNECT driver seat safety belt buckle pretensioner C3049 and passenger seat safety belt buckle pretensioner C3050.

CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C3052.

REPOWER the SRS. REFER to Section 501-20B.

AF14 CHECK THE TED INSTALLATION AND FOR CRUSHED SEAT BACKREST

Key in OFF position.
Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Section 501-20B.
Remove the seat. Refer to Seat — Front, 40 Percent in this section.
Remove the seat backrest trim cover. Refer to Seat Backrest Cover — Front, 40 Percent in this section.
Inspect the seat backrest for the following:

Is the TED correctly installed?

Is the seat backrest foam pad crushed or restricted?

Is the climate controlled seat manifold crushed or restricted?

Is the TED correctly installed and are there no signs of damage to the foam pad and manifold?

Yes
CONNECT the battery ground cable.

INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module in this section. REPEAT the self-test. CLEAR the DTCs.

REPOWER the SRS. REFER to Section 501-20B.

No
CORRECTLY install the backrest TED or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. REPEAT the self-test. CLEAR the DTCs.

REPOWER the SRS. REFER to Section 501-20B.

Component Test

Component Test — Thermo-Electric Device (TED) Cooling Performance

NOTE: This test is intended to check the cooling mode performance of an operational climate controlled seat backrest or cushion thermo-electric device (TED) and verify it is cooling inlet air at the TED (ambient cabin air) between 6-8°C (10-14°F).

NOTE: Make sure the vehicle is out of direct sunlight and is in an area with a stable air temperature when testing the climate controlled seat system.

NOTE: For correct temperature measurements, the seat being tested should be occupied.

Enter Datalogger and monitor the following CCSM PIDs:
- CSHTEMP (Cushion Thermal Electric Device [TED] (Temperature)
- BK_TEMP (Back Thermal Electric Device [TED] Temperature)
- PCSHTMP (Passenger Cushion Thermal Electric Device [TED] Temperature)
- PBKTMP (Passenger Back Thermal Electric Device [TED] Temperature)
- DCCSMOD (Driver Climate Controlled System State)
- PCCSMOD (Passenger Climate Controlled System State)
Any initial PID value of greater than 205°C (401°F) or less than 2°C (36°F) indicates a system hardware failure. Do not proceed with this test. GO to Symptom Chart or CCSM DTC Chart for diagnosis.
Gain access to the seat cushion and backrest TEDs and use a suitable thermo-couple temperature measuring device to monitor the air inlet temperature.
- Release the J-clip at the backrest bottom and unzip the 2 zippers at the backrest side edges.
- Place the temperature probe near each TEDs air filter.
NOTE: The engine must be running to operate the climate controlled seat system and carry out this test.
Operate system in high cool mode and measure the temperature at the cushion TED filter using the thermo-couple device.
- Obtain and record the air inlet temperature at the TED.
  - Secure the temperature probe at the cushion TED air filter before measuring.
Use a scan tool to measure the cushion TED PID temperature and record the value.
- Monitor the MODE PID and verify the system is operating. If during testing the PID value changes to Blower Only state, the system has entered into recovery mode and power to the TEDs is disabled. If this occurs, the seat has failed the test. Do not continue. Return to the diagnostic routine.
Subtract the cushion TED PID temperature from the cushion air inlet temperature and record the temperature difference value.
Continue to operate the system in high cool mode and use the thermo-couple device to measure the temperature at the backrest TED filter.
- Obtain and record the air inlet temperature at the TED.
  - Secure the temperature probe at the backrest TED air filter and close the backrest trim cover before measuring.
Use a scan tool to measure the backrest TED PID temperature and record the value.
- Monitor the MODE PID and verify the system is operating. If during testing the PID value changes to Blower Only state, the system has entered into recovery mode and power to the TEDs is disabled. If this occurs, the seat has failed the test. Do not continue. Return to the diagnostic routine.
Subtract the backrest TED PID temperature from the backrest air inlet temperature and record the value.
Compare the cushion and backrest calculated temperature values. The temperature difference should be between 6 and 8 degrees.
If the calculated temperature values are not within these specifications, check the climate controlled seat components for air duct or filter restrictions, blockages, duct or electrical disconnections and for incorrect assembly. Repair as needed. If OK, carry out the CCSM self-test and if any DTC is retrieved, go to Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Chart for diagnostic direction. Return to the diagnostic routine.

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Parts & tools for this job For 2007 Ford Expedition

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