Turn Signal, Cornering and Hazard Lamps

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:
When diagnosing cornering/static bending lamp faults note that the operating principle differs slightly when the headlamp system is installed with the Adaptive Front Lighting System (AFS).
1 Verify the customer concern.
- Note that intermittent fault reports may be due to the cycling operation of the field effect transistors (FETs)
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 verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.


DTC Index
For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to A L L Diagnostic Trouble Codes ( DTC ). For additional information, refer to Diagnostic Trouble Code (DTC) Index - DTC: Central Junction Box (BCM) Testing and Inspection