F 150 2WD Pickup V8-5.4L SOHC VIN 5 (2004)
Test C1-C2
Test C3-C4
Normal Operation
The instrument cluster energizes circuit 53 (BK/LB) providing power to the interior lamps. The interior lamps are grounded through circuit 57 (BK).
The interior lamps remain lit until the instrument cluster removes voltage from circuit 53 (BK/LB).
Possible Causes
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instrument cluster
-
bulb
-
door ajar switch
-
circuit 53 (BK/LB)
Test D
PINPOINT TEST D: THE DEMAND LIGHTING IS INOPERATIVE
Test D1
