Test A: The Courtesy Lamps Are Inoperative

PINPOINT TEST A: THE COURTESY LAMPS ARE INOPERATIVE

A1-A2:

A3-A4:

A5:

Normal Operation
Power is supplied to the courtesy lamps through the smart junction box (SJB) fuse 3 (15A), which supplies voltage to the courtesy lamps/demand lamps. When any 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 CLN26 (BU). Ground for the courtesy lamps is supplied through circuit GD139 (BK/YE).

Possible Causes
- Fuse
- Circuit CLN09 (YE/GN) short to ground
- Circuit CLN26 (BU) open or short to ground
- Circuit GD139 (BK/YE) open
- SJB