Test A: The Courtesy Lamps Are Inoperative

PINPOINT TEST A: THE COURTESY LAMPS ARE INOPERATIVE

A1-A3:

A3-A6:

A6-A8:

A9:

Normal Operation
Power is supplied to the courtesy lamps through the bussed electrical center (BEC) fuse 67 (30A) to the smart junction box (SJB). When a door is opened, the ajar switch opens, signaling the SJB. The SJB monitors the ajar circuits, and based on the ajar status, the SJB will supply voltage to the courtesy lamps on circuit 53 (BK/LB). Ground for the courtesy lamps is supplied by the SJB through circuit 54 (LG/YE).

Possible Causes
- Fuse
- Circuit 53 (BK/LB) open or short to ground
- Circuit 54 (LG/YE) open or short to voltage
- Interior lamp
- SJB