Headlamp Switch Input Failure

Tests 1 - 3:

Tests 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 wire
- Headlamp switch MUX wire short to battery
- Headlamp MUX wire
- Headlamp switch
- Headlamp switch
- Headlamp switch MUX wire shorted to ground
- Body control module