Courtesy Lamp Inoperative From All Doors

SYMPTOM
* COURTESY LAMP INOPERATIVE FROM ALL DOORS

POSSIBLE CAUSES
- No response(BCM)/CCD bus failure
- Dome lamp bulb open
- Fused B+ circuit open from JUNC block to lamp bulb
- Courtesy lamps driver circuit open (by default)
- Junction block defective - fused B+ at 6 way CONN
- Junction block defective - internal 12 way CONN
- BCM defective (court LMP DRVR CKT FUNC) by default
- BCM defective (LF door ajar switch status)