Pinpoint Test AP: The Trailer Lamps Are Inoperative - All

NOTE: It is necessary for the vehicle exterior lighting to be operating correctly. Repair any concerns with the vehicle rear exterior lighting before the diagnosis of the Trailer Tow Module (TTM) and wiring is attempted.

Fig 1: Pinpoint Test AP: Trailer Lamps Are Inoperative - All (AP1-AP2)

Courtesy of FORD MOTOR CO.

Fig 2: Pinpoint Test AP: Trailer Lamps Are Inoperative - All (AP3-AP4)

Courtesy of FORD MOTOR CO.

Fig 3: Pinpoint Test AP: Trailer Lamps Are Inoperative - All (AP5-AP6)

Courtesy of FORD MOTOR CO.