Inspection And Verification
CAUTION:
Diagnosis by substitution from a donor vehicle is NOT
acceptable. Substitution of control modules does not guarantee confirmation of a fault and may also cause additional faults in the vehicle being checked and/or the donor vehicle.
NOTE:
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION
Mechanical Electrical - Door mirror switch condition and installation
- Door mirror condition and installation
- Battery condition and state of charge
- Fuses
- Harnesses and connectors
- Washer jet and mirror heater relay
- Memory control module(s)
- Door mirror switch(s)
- Door mirror motor(s)
- Ignition switch
- Battery Junction Box (BJB)
- Central Junction Box (CJB)
- Automatic Temperature Control Module (ATC)
- Driver/Passenger Door Module (DDM/PDM)
- Local Interconnect Network (LIN) circuit
- 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 cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.