2010 Cadillac Truck SRX FWD V6-3.0L Page 1608
1. Ignition ON, clear the DTC information with a scan tool.
2. Observe the scan tool DTC information. Verify that DTC P0602 or P0630 does not set.
瀚慖f DTC P0602 or P0630 failed this ignition, reprogram the K20 ECM. Refer to Control Module References (See: Testing and
Inspection/Programming and Relearning). If the DTC resets, replace the K20 ECM.
3. Observe the DTC information with a scan tool. Verify that DTC P0601, P0603, P0604, P0606, P062B, P062F, P16F3, or P2610 does not set.
瀚慖f a DTC failed this ignition, replace the K20 ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and
programming
P0615
DTC P0615, P0616, or P0617
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
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/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
