Inspection and Verification: Notes
NOTE:
Before starting electrical diagnosis, check for mechanical binds by manually operating the door locks. Operate lock system several times from each switch while observing the operation of all door locks. Be sure battery is fully charged.
NOTE:
The lighting control module (LCM) must be reconfigured upon replacement. Refer to
MODULE CONFIGURATION
.
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical and electrical damage.
- If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
- Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with:
- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE CONFIGURATION .
- NO RESP/NOT EQUIP for DDM, go to PINPOINT TEST B .
- NO RESP/NOT EQUIP for LCM, go to PINPOINT TEST A .
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the DDM or LCM.
- If the DTCs retrieved are related to the concern, go to DDM DIAGNOSTIC TROUBLE CODE (DTC) INDEX or LCM DIAGNOSTIC TROUBLE CODE (DTC) INDEX to continue diagnostics.
- If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.