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Home >> GMC >> 2013 >> Yukon Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1130 (Configurable Customer Control System) >> Diagnostic Information and Procedures >> Steering Wheel Controls Inoperative >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: It is recommended that Component Testing is performed before Circuit Testing when diagnosing steering wheel controls.
CAUTION: Refer to SIR Caution .
  1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
  2. Ignition ON, test for ignition voltage between the ignition circuit terminal 3 and ground.
    • If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  3. Test for 0 volts between the signal circuit terminal 4 and ground.
    • If greater than the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  4. Test for ignition voltage between the ignition circuit terminal 3 and the signal circuit terminal 4.
    • If less than the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the switch.
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