Circuit/System Testing

It is recommended that Component Testing is performed before Circuit Testing when diagnosing steering wheel controls.

1. Ignition OFF, disconnect the right steering wheel control connector.
2. Ignition ON, with a scan tool, verify the SWC Switch Voltage parameter is at 0 volts.
   • If over 0 volts, test the remote radio control signal circuit for a short to voltage. If the circuits test normal, replace the BCM.
3. If all circuits test normal, refer to Component Testing.