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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1103 (Exterior Lighting System) >> Diagnostic Tests >> Trailer Lamps >> Pinpoint Tests >> Pinpoint Test T: The Trailer Lamps Are Inoperative - Trailer Parking Lamps >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

The trailer tow parking lamp relay coil is provided voltage through circuit 14 (BN) when the vehicle parking lamps are illuminated. Ground for the trailer tow parking lamp relay coil is provided through circuit 57 (BK). Voltage for the trailer tow parking lamp relay switch side is provided by the BJB fuse 24 (20A) through circuit 1043 (DG/YE). When the trailer tow parking lamp relay is energized, voltage is routed to the trailer tow connector through circuit 962 (BN/WH).

This pinpoint test is intended to diagnose the following:

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