lincoln Workshop Repair Guides

Lincoln Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 9351 > < Initial Inspection and Diagnostic Overview|Page 9349
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Z6-Z7

Tests AA: The Trailer Lamps Are Inoperative - Parking

PINPOINT TEST AA: THE TRAILER LAMPS ARE INOPERATIVE - PARKING

Normal Operation

When the vehicle parking lamps are on, circuit 14 (BN) supplies voltage to the coil side of the trailer tow parking lamp relay. Ground is supplied to
the trailer tow parking lamp relay through the central junction box (CJB). When the trailer tow parking lamp relay is energized, voltage is routed from
the CJB fuse 10 (20A) to the trailer tow connector through circuit 962 (BN/WH).

This pinpoint test is intended to diagnose the following:

-

Fuse

-

Wiring, terminals or connectors

-

Trailer tow parking lamp relay

-

Trailer tow connector

-

CJB

-

Trailer

Initial Inspection and Diagnostic Overview|Page 9351 > < Initial Inspection and Diagnostic Overview|Page 9349