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 - Front fog lamp condition and installation
- Bulb and installation
- Bulb holder and installation
- Adjuster screw
- Fog lamp switch condition and installation
- Fuses
- Wiring harness
- Loose or corroded connector(s)
- Fog lamp warning indicator
- Fog lamp switch
- Battery Junction Box (BJB)
- Central Junction Box (CJB)
- 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 relevant DTC Index.