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 instrument cluster (IC) monitors the door ajar switch status on circuits 159 (RD/PK), 1034 (BK/WH) and 628 (WH). The door ajar switches supply a ground through the switch contacts to circuit 57 (BK). When the IC detects a door ajar input, the IC 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.

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

D1:

D1-D3:

D4: