Test A: The Interior Lamps Are Inoperative

PINPOINT TEST A: THE INTERIOR LAMPS ARE INOPERATIVE

A1-A3:

A3-A5:

A6-A8:

A8-A10:

A11-A13:

A14-A15:

A16-A17:

Normal Operation
The instrument cluster monitors the door ajar switch status on circuits 159 (RD/PK), 1034 (BK/WH) and 628 (WH) for a ground supplied through the ajar switches by circuit 57 (BK), indicating an open door. The instrument cluster then grounds circuits 1005 (VT/OG) and 1008 (LG/OG), energizing the battery saver relay and the interior lamp relay. When the relays are energized, voltage is supplied to the interior lamp circuits.

Possible Causes
- Fuse(s)
- Circuit 53 (BK/LB) open
- Circuit 54 (LG/YE) open
- Circuit 127 (BK/LB) open
- Circuit 729 (RD/WH) open
- Circuit 1005 (VT/OG) open
- Circuit 1008 (LG/OG) open
- Instrument cluster
- Interior lamp relay
- Battery saver relay
- Headlamp switch