Test B: An Individual Interior Lamp Is Inoperative

PINPOINT TEST B: AN INDIVIDUAL INTERIOR LAMP IS INOPERATIVE

B1-B2:

B2-B4:

B4-B6:

B6-B8:

B8-B9:

Normal Operation
The smart junction box (SJB) provides a ground circuit for the battery saver relay and the interior lamp relay. When the relays are energized, voltage is supplied to the interior lamp circuits. The interior lamps are grounded through circuit 57 (BK). The interior lamps remain lit until the SJB deactivates the battery saver relay and the interior lamp relay.

Possible Causes
- Circuit 53 (BK/LB) open
- Circuit 55 (BK/PK) open
- Circuit 57 (BK) open
- Circuit 543 (DG) open
- Lamp assembly
- SJB