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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 488 (Trailer Brake Control System) >> Diagnostic Information and Procedures >> DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline Without LY6) >> Circuit/System Description

Circuit/System Description

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The trailer brake control relay receives inputs from the fuel pump/trailer brake control module; these inputs are used to determine the amount of voltage the relay will supply to the trailer brakes.

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