ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 6312 > < Initial Inspection and Diagnostic Overview|Page 6310
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Z1-Z2

Normal Operation

Voltage to the trailer tow lamps is controlled by the smart junction box (SJB). Circuits 52 (YE) and 64 (DG) supply voltage to the trailer tow LH and
RH stop/turn lamps respectively. Circuit 962 (BN/WH) supplies voltage to the trailer tow parking lamps.

Possible Causes

-

circuit 64 (DG) short to voltage

-

circuit 52 (YE) short to voltage

-

circuit 962 (BN/WH) short to voltage

-

SJB

Initial Inspection and Diagnostic Overview|Page 6312 > < Initial Inspection and Diagnostic Overview|Page 6310