Test D: The Courtesy Lamps Do Not Turn On With One Door Open

PINPOINT TEST D: THE COURTESY LAMPS DO NOT TURN ON WITH ONE DOOR OPEN

Normal Operation
The driver door module (DDM) monitors the LH front door ajar switch on circuit 867 (DB), and the remaining door ajar switches on circuit 627 (BK/OG). The door ajar switches provide a path for ground supplied through the ajar switches by circuit 57 (BK), indicating an open door. The DDM then signals the lighting control module (LCM) to supply power to the courtesy lamps.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- DDM

D1:

D1-D4: