DTC P0615, P0616, or P0617
Diagnostic Instructions
DTC Descriptors
| DTC P0615: Starter Relay Control Circuit |
| DTC P0616: Starter Relay Control Circuit Low
Voltage |
| DTC P0617: Starter relay Control Circuit High
Voltage |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Relay Switch B+
|
1
|
1
|
-
|
-
|
Relay Coil Ignition
|
P0615*, P0616**
|
P0615, 1
|
2
|
-
|
Relay Switch Control
|
1
|
1
|
2
|
-
|
Relay Coil Ground
|
-
|
P0615, 1
|
-
|
-
|
1. Starter Solenoid Does Not Click
2. Cranks All The Time
* LUJ, LLU, LDE, or LDD
** LPL, LPV, LSF, LBS, or LBX
|
|
| |
Circuit/System Description
When the ignition switch is placed in the START position, a
discrete signal is supplied to the body control module (BCM)
notifying it that the ignition is in the START position. The BCM
then sends a message to the engine control module (ECM) that crank
has been requested. The ECM then verifies that the clutch pedal is
depressed or the transmission is in Park/Neutral. If it is, the ECM
then supplies 12 V to the control circuit of the starter relay.
When this occurs, battery voltage is supplied through the switch of
the starter relay to the starter solenoid.
Conditions for Running the DTC
| • |
The ignition is in the START
position. |
| • |
The system voltage is between
9.5-18 V. |
Conditions for Setting the DTC
The ECM detects improper voltage on the control circuit of the
starter relay.
Action Taken When the DTC Sets
DTC P0615, P0616, and P0617 are C type DTCs.
Conditions for Clearing the DTC
DTC P0615, P0616, and P0617 are C type DTCs.
Reference Information
Schematic Reference
Starting and Charging Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Starting System Description and Operation
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
KR27 starter relay. |
| 2. |
Ignition OFF and scan tool
disconnected, open and close the driver door, and wait 1 minute.
Test for less than 5.0 Ω between the ground circuit terminal
86 and ground. |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 3. |
Ignition ON, verify a test
lamp illuminates between the B+ circuit terminal 30 and
ground. |
| ⇒ |
If the test lamp does not illuminate, test the B+
circuit for a short to ground or an open/high resistance. If the
circuit tests normal and the B+ circuit fuse is open, test the
control circuit terminal 87 for a short to ground. |
| 4. |
Ignition ON, verify that a
test lamp does not illuminate between the control circuit terminal
87 and ground. |
| ⇒ |
If the test lamp illuminates, test the control
circuit for a short to voltage. |
| 5. |
Parking brake applied and the
transmission is in NEUTRAL or PARK. Momentarily install a 30 A
fused jumper wire between the B+ circuit terminal 30 and the
control circuit terminal 87. Verify the starter is
activated. |
| ⇒ |
If the starter does not activate, test the control
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, test or replace the M64 starter motor. |
| 6. |
Ignition OFF, connect a test
lamp between the ignition circuit terminal 85 and the ground
circuit terminal 86. |
| 7. |
Transmission in park or
neutral, cycle the ignition between the ON and CRANK position. The
test lamp should turn ON and OFF when changing between the
commanded states. |
| ⇒ |
If the test lamp is always ON, test the ignition
circuit for short to voltage. If the circuit tests normal, replace
the K20 ECM. |
| ⇒ |
If the test lamp is always OFF, test the ignition
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 ECM. |
| 8. |
If all circuits tests normal,
replace the KR27 starter relay. |
Component Testing
Relay Test
| 1. |
Ignition OFF, disconnect the
STRTR relay. |
| 2. |
Test for 60-180 Ω
between terminals 85 and 86. |
| ⇒ |
If not within the specified range, replace the
relay. |
| 3. |
Test for infinite resistance
between the following terminals: |
| ⇒ |
If not the specified value, replace the
relay. |
| 4. |
Install a 20 A fused jumper
wire between relay terminal 85 and 12 V. Install a jumper wire
between relay terminal 86 and ground. Test for less than 2 Ω
between terminals 30 and 87. |
| ⇒ |
If greater than specified range, replace the
relay. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
