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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Brake Control System >> Diagnostic Information and Procedures >> DTC C0845 >> Circuit/System Description
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Circuit/System Description

The trailer brake control module (TBCM) monitors the ignition circuit. This diagnostic compares ignition state with the engine running state received over serial data to determine if there is an ignition circuit fault.

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