F 150 2WD V8-4.6L (2008)
F1-F4
Test G: The Courtesy Lamps Do Not Turn On With One Door Open
PINPOINT TEST G: THE COURTESY LAMPS DO NOT TURN ON WITH ONE DOOR OPEN
Normal Operation
On vehicles with remote keyless entry (RKE), the vehicle security module (VSM) monitors the door ajar switch status on circuits 344 (BK/YE), 345
(BK/PK), 346 (BK/WH) and 363 (BK/LB) for a ground supplied through the ajar switches by circuit 57 (BK), indicating a door has been opened. The
VSM transmits information over the network to indicate door ajar status. The instrument cluster (IC) then energizes the courtesy lamp circuit, lighting
the courtesy lamps.
On vehicles without RKE, the 2 front door ajar circuits 344 (BK/YE) and 345 (BK/PK) are monitored directly by the IC.
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DTC B2659 (Courtesy Lamp Switch Fault) - is an on-demand DTC that sets when the IC detects a short to ground from the DOME LAMP ON
input circuit.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Door ajar switch
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VSM (if equipped)
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IC