Test F: The Demand Lighting Is Inoperative

PINPOINT TEST F: THE DEMAND LIGHTING IS INOPERATIVE

F1:

F2:

Normal Operation
The generic electronic module (GEM) provides a ground circuit for the battery saver relay. The battery saver relay provides power to circuit 29-LC7 (OG/BU). Circuit 29-LC7 (OG/BU) provides power to each demand lamp switch. When the demand lamp switch is activated, power is provided to the selected demand lamp. The demand lamps are grounded through circuit 31-LC7 (BK).

Possible Causes
- Circuit 31-LC7 (BK) open
- Circuit 31-LC7A (BK) open (wagon)
- Interior lamp