Exterior Lighting

Test 1 - 3:

Test 4 - 8:

SYMPTOM
HEADLAMP SWITCH INPUT FAILURE

WHEN MONITORED
Ignition in run position.

SET CONDITION
The BCM detects excessive current on the fog lamp relay control circuit.

POSSIBLE CAUSES
- Headlamp switch return circuit
- Headlamp switch MUX circuit shorted to battery
- Headlamp MUX circuit
- Headlamp switch
- Headlamp switch
- Headlamp switch MUX circuit shorted to ground
- Body control module