F 150 4WD V8-4.6L VIN 8 (2010)
Parking Lamp: Pinpoint Tests
Pinpoint Test P: One Or More Parking, Rear Or License Plate Lamps Is Inoperative
Parking, Rear and License Plate Lamps
Pinpoint Tests
Pinpoint Test P: One Or More Parking, Rear or License Plate Lamps Is Inoperative
Refer to Wiring Diagram Set 92, Parking, Rear and License Lamps for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
When the headlamp switch is placed in the PARKING LAMPS ON position, the Smart Junction Box (SJB) provides a ground for the parking lamp relay
coil (integrated into the SJB). When the parking lamp relay is energized, voltage is routed to the rear and front parking lamps.
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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Bulb holder
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SJB
PINPOINT TEST P: ONE OR MORE PARKING, REAR OR LICENSE PLATE LAMPS IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
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P1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE
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Ignition OFF.
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Place the headlamp switch to the PARKING LAMPS ON position.
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Are all the parking lamps inoperative?
Yes
VERIFY the SJB fuse 22 (15A) is OK. If OK, GO to P2. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short.
See: Diagrams/Electrical Diagrams/Diagrams By Number
No
GO to P3.
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P2 CHECK THE SJB FRONT PARKING LAMPS OUTPUT CIRCUIT FOR AN OPEN
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Place the headlamp switch to the OFF position.
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Disconnect: SJB C2280e.
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Connect a fused jumper wire between the SJB C2280e-1, circuit CDC34 (WH/OG), harness side and the SJB C2280e-6, circuit CLS30 (VT/WH),
harness side.