Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage.VISUAL INSPECTION TABLE
Electrical - Central junction box (CJB) fuse(s):
- 6 (15A)
- 22 (10A)
- 401 (30A)
- Wiring harness
- Headlamp switch
- Dimmer module (Navigator only)
- Central junction box (CJB) fuse(s):
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the concern remains after the inspection, 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.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- 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, refer to PINPOINT TEST O: NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION or PINPOINT TEST P: NO MEDIUM SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION .
- No response/not equipped for the instrument cluster, refer to PINPOINT TEST A: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER .
- 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.
- If there are instrument cluster DTCs retrieved, refer to INSTRUMENT CLUSTER .
- If no DTCs related to the concern are retrieved, GO to SYMPTOM TABLE .