Inspection and Verification

Inspection and Verification

1. Verify the customer concern.





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 evident, connect the diagnostic tool to the data link connector 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 diagnostic tool data link test. If the diagnostic tool responds with:

- CAN circuit fault; all electronic control units no response/not equipped, Information Bus.
- No response/not equipped for the instrument cluster, GO to Pinpoint Test A Test A: No Communication With the Instrument Cluster.
- No response/not equipped for the restraint control module (RCM), refer to Restraints and Safety Systems
- No response/not equipped for the smart junction box (SJB), refer to Body Control Systems.
- No response/not equipped for the powertrain control module (PCM), refer to Information Bus
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the instrument cluster.

7. If the DTCs retrieved are related to the concern, [1][2]Diagnostic Trouble Code Descriptions
8. If no DTCs related to the concern are retrieved, Symptom Related Diagnostic Procedures