Park Lamps Will Not Turn Off

SYMPTOM
* PARK LAMPS WILL NOT TURN OFF

POSSIBLE CAUSES
- No response (BCM) - CCD bus failure
- Park lamp relay control circuit shorted to ground
- Park lamp relay output circuit shorted to voltage
- Park lamp switch sense circuit shorted to ground
- Park lamp relay defective - control shorted (by default)
- Headlamp switch defective - shorted
- BCM defective - park lamp switch sense closed (by default)