Pinpoint Test B: The Trailer Brakes are Inoperative: 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.
NOTE:
Carry out all pinpoint tests without a trailer connected to the vehicle.
Refer to OEM WIRING DIAGRAMS Trailer/Camper Adapter for schematic and connector information.