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

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Refer to OEM WIRING DIAGRAMS Trailer/Camper Adapter for schematic and connector 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 -- F-150 .