Sebring Sedan L4-2.4L VIN J (2004)
4. When the self-check is complete the CMTC will display one of the following five messages:
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F (FAIL)
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P(PASS)
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Bus (No PCI bus communication)
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Bus 1 (No PCM bus messages received)
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Bus 2 (No BCM bus messages received)
5. To exit the self-check mode, depress the STEP button or cycle the ignition switch and the CTM will return to normal operation.
If a Bus fault is displayed, refer to the symptom list. If an F is displayed, the CMTC must be replaced. The CMTC will not display an F for a VF segment
that does not illuminate.
AMBIENT TEMPERATURE SENSOR
The outside temperature function is supported by the ambient temperature sensor (ATS), a signal and ground circuit hardwired to the PCM, the BCM,
and the CMTC display.
If the CMTC display indicates 60° C (140° F) or the ATS sense circuit is shorted to ground, the temp display will be 60° C (140° F) to indicate a
SHORT circuit condition.
If the CTM display indicates -45° C (-49° F) or the ATS sense circuit is open, the temp display will be -45° C (-49° F) to indicate an OPEN circuit
condition. If there is an OPEN or SHORT circuit condition,
it must be repaired before the CMTC VFD can be tested.
The ATS is supported by the PCM. ATS fault DTC's will be recorded in the PCM. The ATS can be diagnosed using the following Sensor Test. Test the
ATS circuits using the diagnostics in the Body Diagnostic Procedures. If the ATS, the circuits, and PCI bus communications are confirmed to be OK, but
the CMTC temperature display is inoperative or incorrect, replace the CMTC.
AMBIENT TEMPERATURE SENSOR TEST
1. Turn the ignition OFF.
2. Disconnect the ATS harness connector.
3. Measure the resistance of the ATS using the following min/max values:
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0° C (32° F) Sensor Resistance = 29.33- 35.99 Kilohms
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10° C (50° F) Sensor Resistance = 17.99 -21.81 Kilohms
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20° C (68° F) Sensor Resistance = 11.37 -13.61 Kilohms
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25° C (77° F) Sensor Resistance = 9.12- 10.86 Kilohms
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30° C (86° F) Sensor Resistance = 7.37 - 8.75 Kilohms
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40° C (104° F) Sensor Resistance = 4.90-5.75 Kilohms
The sensor resistance should read between these min/max values. If the resistance values are no OK. replace the Sensor.
Door Ajar System
The door ajar and decklid ajar states are used as inputs for the Body Control Module (BCM). The BCM uses these inputs to determine exactly what
position the doors and decklid are in. The DRBIII(R) will display the state of the door ajar and the decklid ajar switches in inputs/Outputs. It's important
to note, that when any door, or the decklid is closed, the switch state on the DRBIII(R) will show OPEN. When any door, or the decklid is open the
switch state on the DRBIII(R) will show CLOSED. During diagnosis, if a door or the decklid is closed and the DRBIII(R) displays the switch state as
CLOSED, it indicates a shorted ajar circuit. If the door or the decklid is open and the DRBIII(R) displays the switch state as OPEN, it indicates an open
ajar circuit.
Electrically Heated Systems
HEATED SEAT RELAY
The Heated Seat System supply voltage is controlled through the Heated Seat Relay located in the Power Distribution Center (PDC). The relay coil is
controlled by the Body Control Module (BCM) and is energized whenever the ignition key is in the on position. If low battery voltage is sensed by the
Powertrain Control Module, a PCI bus message will be sent to the BCM to turn off the Heated Seat Relay.
REAR WINDOW DEFOGGER
The Body Control Module (BCM) controls the operation of the Rear Defogger Relay located in the Junction Block. The BCM will energize the relay
when it receives a request from the HVAC control head (PCI bus message for Automatic Temperature Control or a MUX input for Manual Temp
Control).
With the relay activated, it will supply battery voltage to the rear window defogger grid along with heat mirrors if so equipped.
Exterior Lighting System
