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.
- Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 volts.
- If not within the specified range, refer to Charging System Test (Acadia or Enclave) or Charging System Test (OUTLOOK) .
- Ignition OFF, disconnect the harness connectors at the appropriate module.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuits listed below and ground.
- Terminal 2 (IPC)
- Terminal 4 (HUD)
- Terminal D (PPS)
- Terminal 5 X1 (Radio UQG)
- Terminal 8 X1 (Radio U42/UQF/UQA/UQS)
- Terminal 7 X1 (UPA)
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground.
- Terminal 1 (IPC)
- Terminal 6 (HUD)
- Terminal A (PPS)
- Terminal 1 X1 (UPA, Radio U42/UQF/UQG)
- Terminal 4 X1 (Radio UQA/UQS)
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the appropriate control module.