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Inspection and Verification

INSPECTION AND VERIFICATION

NOTE: Upon installation of a new GEM, the module must be configured.

1. Verify the customer concern.


Visual Inspection Chart:






2. Visually inspect for the obvious signs of mechanical and electrical damage.
3. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) 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.

4. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
5. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- All electronic control units no response/not equipped, refer to Information Bus (Module Communications Network).
- No response/not equipped for the GEM, 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 self-test diagnostics for the GEM.

6. If the DTCs retrieved are related to the concern, go to the Generic Electronic Module (GEM) Diagnostic Trouble Code (DTC) Index. Trouble Code Descriptions - Warning Devices
7. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Diagnosis By Symptom - Warning Devices