Inspection and Verification

INSPECTION AND VERIFICATION

1. Verify the customer concern.

Visual Inspection Chart:

2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually, 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.

5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
6. Carry out the DATA LINK DIAGNOSTICS TEST. If the diagnostic tool responds with:
- CKT930, or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus (Module Communications Network).
- NO RESP/NOT EQUIP for the generic electronic module (GEM) (early production) or the vehicle security module (late production), refer to Body Control Systems (Multifunction Electronic Control Module).
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the GEM (early production) or the vehicle security module (late production).

7. If the DTCs retrieved are related to the concern, go to the GEM (early production) or the vehicle security module (late production) Diagnostic Trouble Code (DTC) Index. GEM Diagnostic Trouble Code (DTC) Index Vehicle Security Module Diagnostic Trouble Code (DTC) Index
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart. Autolamps