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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 S: The Trailer Lamps Are Inoperative - Trailer Stop/Turn Lamp >> 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 stop/turn lamp relay coils are provided voltage through circuit 9 (LG/OG) (LH rear stop/turn) and circuit 5 (OG/LB) (RH rear stop/turn) when the brake pedal is applied. Ground for the trailer tow stop/turn lamp relay coils is provided through circuit 57 (BK). Voltage for the trailer tow stop/turn lamp relays switch side is provided by the battery junction box (BJB) fuse 26 (20A) through circuit 212 (DB). When the trailer tow stop/turn lamp relay is energized, voltage is routed to the trailer tow connector through circuit 52 (YE) (LH stop/turn) and/or 64 (DG) (RH stop/turn).

This pinpoint test is intended to diagnose the following:

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