F 150 2WD Pickup V8-4.6L VIN W (2006)
W7 Continued
Normal Operation
The parking lamps are controlled by the trailer tow parking lamp relay. When the trailer tow parking lamp relay is energized, voltage is routed from
the central junction box (CJB) to the trailer tow connector through circuit 962 (BN/WH). The reversing lamps are controlled by the trailer tow
reversing lamp relay. When the trailer tow reversing lamp relay is energized, voltage is routed from the central junction box (CJB) to the trailer tow
connector through circuit 140 (BK/PK).
Possible Causes
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Circuit 140 (BK/PK) short to voltage
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Circuit 962 (BN/WH) short to voltage
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Trailer tow parking lamp relay
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Trailer tow reversing lamp relay
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CJB
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Trailer
Test X: The Trailer Battery Charging Is Inoperative
PINPOINT TEST X: THE TRAILER BATTERY CHARGING IS INOPERATIVE
X1