Eight steering wheel control switches are used in order to control the audio and HVAC functions. The steering wheel controls are configured as a resistor network. Each switch has a unique resistance value.

When the ignition switch is in the RUN or ACCESSORY position, ignition positive voltage is provided to the steering wheel controls. The voltage is provided from the Dash Integration Module (DIM) through the steering column fuse holder switch fuse (located at the base of the steering column) and the inflatable restraint steering wheel module coil. Pressing a steering wheel control switch causes voltage to pass through the resistor(s) to the DIM. The DIM processes the value received and sends a class 2 message to the radio to complete the proper command.

The resistance listed in this chart are measured, with the steering wheel controls disconnected, from pin A to pin C of the steering wheel controls. The actual resistance measured should be within 10% of the value shown.