lincoln Workshop Repair Guides

Lincoln Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 9750 > < Initial Inspection and Diagnostic Overview|Page 9748
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AA4 Continued

Normal Operation - Trailer Tow Parking Lamps

When the trailer tow parking lamps relay is energized, the voltage is routed to the trailer through circuit 962 (BN/WH).

Normal Operation - Trailer Tow Reversing Lamps

The trailer tow reversing lamps relay is integral to the central junction box (CJB). When the trailer tow reversing lamps relay is energized, voltage is
routed to the trailer through circuit 963 (BK/LG).

Possible Causes

-

Circuit 962 (BN/WH) short to voltage

-

Circuit 963 (BK/LG) short to voltage

-

Trailer tow parking lamps relay

-

Trailer

-

CJB

Tests AB: The Trailer Battery Charging Is Inoperative

PINPOINT TEST AB: THE TRAILER BATTERY CHARGING IS INOPERATIVE

AB1

Initial Inspection and Diagnostic Overview|Page 9750 > < Initial Inspection and Diagnostic Overview|Page 9748