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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Steering Wheel & Steering Column) >> Diagnostic Information and Procedures >> Heated Steering Wheel Indicator Malfunction >> Circuit/System Description

Circuit/System Description

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When the ignition is ON and the heated steering wheel switch is pressed, the switch circuit is pulled to ground. The heat module monitors the switch circuit, and turns the steering wheel heat system ON or OFF when the circuit is grounded. The heat module supplies voltage to the indicator lamp when the system is on.

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