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Home >> Mercury >> 2005 >> Mountaineer 2WD V8-4.6L SOHC VIN W >> Repair and Diagnosis >> Lighting and Horns >> Courtesy Lamp >> Testing and Inspection >> Pinpoint Tests >> Test H: The Interior Lamps Do Not Turn on With One Door Open

Test H: The Interior Lamps Do Not Turn on With One Door Open

PINPOINT TEST H: THE INTERIOR LAMPS DO NOT TURN ON WITH ONE DOOR OPEN


H1-H3:






Normal Operation
The vehicle security module monitors the door ajar switch status on circuits 700 (WH/VT), 759 (LG/YE), 760 (PK/LB), 761 (GY/RD), 765 (YE/BK) and 1351 (TN) for a ground supplied through the ajar switches by circuit 1205 (BK) indicating an entry point is closed. The vehicle security module transmits information over the UBP network to indicate a door open condition. The instrument cluster then energizes the interior lamp circuits, lighting the interior lamps.

Possible Causes
- vehicle security module
- instrument cluster
- circuit 1205 (BK)
- ajar switches