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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
  2. Ignition ON, test for B+ between the voltage reference circuit terminal 3 and ground.
    • If less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
    • If greater than the specified value, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  3. If all circuits test normal, test or replace the right steering wheel control switch.
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