Explorer 4WD V8-4.6L (2008)
AC11-AC12
Tests AD: The Trailer Electric Brakes Are Inoperative/Do Not Operate Correctly
PINPOINT TEST AD: THE TRAILER ELECTRIC BRAKES ARE INOPERATIVE/DO NOT OPERATE CORRECTLY
Normal Operation
The trailer brake control (TBC) module is provided voltage at all times by the battery junction box (BJB) fuse 17 (30A) through circuit SBB17 (RD).
Ground for the TBC module is provided through circuit GD138 (BK/WH). The TBC module receives voltage from the stoplamp switch through
circuit CCB08 (VT/WH) when the brake pedal is applied. When requested, the TBC module provides voltage to the trailer tow connector through
circuit CAT19 (BU).
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
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TBC module
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Trailer tow connector
-
Trailer
