F 150 2WD Pickup V8-5.4L SOHC VIN 5 (2004)
Test G9
Normal Operation
The vehicle security module 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 vehicle security module transmits information
over the network to indicate door ajar status. The instrument cluster then energizes the interior lamp circuits, lighting the interior lamps. On vehicles
without remote keyless entry (RKE) the two front door ajar circuits 344 (BK/YE) and 345 (BK/PK) are monitored directly by the instrument cluster.
Possible Causes
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vehicle security module (if equipped)
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instrument cluster
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circuit 344 (BK/YE)
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circuit 345 (BK/PK)
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circuit 346 (BK/WH)
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circuit 363 (BK/LB)
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circuit 57 (BK)
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door ajar switches
