Test B: The Interior Lamps Stay On Continuously

PINPOINT TEST B: THE INTERIOR LAMPS STAY ON CONTINUOUSLY

B1-B5:

B6-B10:

B10-B13:

B13-B16:

B17-B21:

B21-B22:

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 energizes both the battery saver relay and interior lamp relay. When the relays are energized, voltage is supplied to circuit 53 (BK/LB) for the interior lamps.

DTC B1319 - sets when the instrument cluster detects a short to ground on the driver door ajar circuit.

DTC B1327 - sets when the instrument cluster detects a short to ground on the passenger door ajar circuit.

Possible Causes
- Circuit 53 (BK/LB) short to voltage
- Circuit 159 (RD/PK) short to ground
- Circuit 402 (OG/LG) short to ground
- Circuit 628 (WH) short to ground
- Circuit 1008 (LG/OG) short to ground
- Circuit 1034 (BK/WH) short to ground
- Door ajar switch
- Headlamp switch
- Instrument cluster
- Vehicle security module (VSM)