Inspection & Verification
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- Verify the following systems are working correctly:
- Charging
- Fuel
- Cooling
- Safety Belt Warning Chime (LCM)
- Turn Signals
- Headlamps
- Air Suspension
- Anti-Lock Brake System/Traction Control
- Fuel Evaporative System
If the system(s) is/are not working correctly, repair as necessary.
- 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 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 COMMUNICATIONS NETWORK .
- NO RESP/NOT EQUIP for LCM, refer to MODULE COMMUNICATIONS NETWORK .
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the LCM.
- If the DTCs retrieved are related to the concern, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS to continue diagnostics.
- If no DTCs related to the concern are retrieved, proceed to the SYMPTOM CHART to continue diagnostics.
