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Home >> Chevrolet >> 2011 >> Chevy Express G2500, Van Cargo Extended, 6.6 L >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Configurable Customer Control System) >> Diagnostic Information and Procedures >> Steering Wheel Controls Malfunction >> Circuit/System Description

Circuit/System Description

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The body control module (BCM) supplies voltage to the audio steering wheel control switches and monitors the return signal. Each switch state is associated to a set resistance value and when pressed a specific voltage drop occurs across the resistor unique to the switch. The BCM identifies the switch selection and activates the feature.

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