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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 343 (Exterior Lighting System) >> Diagnosis And Testing >> Trailer Lamps >> Pinpoint Tests >> Pinpoint Test AD: The Trailer Electric Brakes Are Inoperative/Always Applied >> Notes

Pinpoint Test AD: The Trailer Electric Brakes Are Inoperative/Always Applied: Notes

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Refer to SYSTEM WIRING DIAGRAMS for additional information.

NOTE: This pinpoint test diagnoses the circuitry supplied for an aftermarket Trailer Brake Control (TBC) module. For diagnostics of the factory trailer brake control system, refer to AUXILIARY BRAKE SYSTEM .