F 150 2WD V8-4.6L (2008)
AD8-AD9
Tests AE: The Trailer Electric Brakes Are Inoperative/Do Not Operate Correctly
PINPOINT TEST AE: THE TRAILER ELECTRIC BRAKES ARE INOPERATIVE/DO NOT OPERATE CORRECTLY
Normal Operation
The trailer brake control module (TBCM) receives battery voltage from the central junction box (CJB) fuse 105 (30A) through circuit 50 (RD). The
trailer brake control module is grounded through circuit 57 (BK). When the brake pedal is applied, the trailer brake control module receives voltage
input through circuit 511 (LG) and provides output voltage to the trailer tow connector through circuit 43 (DB).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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Trailer tow connector
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CJB
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TBCM
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Trailer