Circuit/System Testing
WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X3 harness connector at the audio amplifier.
- Radio ON, test for test for 0.5 - 1.0 V between the appropriate signal circuit terminal listed below and ground.
- terminal 4 (UQG)
- terminal 11 (UQA/UQS)
- If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
- If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
- If all circuits test normal, replace the audio amplifier.