Fog Lamps Will Not Turn On

SYMPTOM
* FOG LAMPS WILL NOT TURN ON

POSSIBLE CAUSES
- No response (BCM) - CCD bus failure
- Fog lamp bulbs open
- Fog lamp relay control circuit open
- Fog lamp relay output circuit open
- Fog lamp relay defective, open
- Multifunction dimmer switch defective (open) default
- Fog lamp switched ground circuit open
- BCM defective - Headlamp relay control
- Multifunction switch defective (fog lamp relay control) default
- Headlamp relay control circuit (foglamps) open