Circuit/System Testing
WARNING: This page is about a different car, the 2010 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, radio OFF, radio B+ fuse removed, disconnect all of the connectors listed below:
- Audio Amplifier X3
- Navigation Information Display Module X1 (if equipped)
- Driver Seatback Video Display (if equipped)
- Passenger Seatback Video Display (if equipped)
- Reinstall the radio B+ fuse. Ignition ON, radio ON, verify that DTC B1265 is NOT set as current.
- If DTC B1265 is set as current, test the entertainment remote enable circuit for a short to ground. If the circuit tests normal replace the Radio.
- Verify that a test lamp illuminates between the entertainment remote enable circuit terminal listed below and ground:
- Audio Amplifier X3 terminal 13
- Navigation Information Display Module X1 terminal 6 (if equipped)
- Driver Seatback Video Display terminal 2 (if equipped)
- Passenger Seatback Video Display terminal 2 (if equipped)
- If the test lamp does not illuminate, test the entertainment remote enable circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the Radio.
- Re-connect the harness connectors listed below one at a time. Verify that DTC B1265 does NOT set as current as each component is re-connected.
- Audio Amplifier X3
- Navigation Information Display Module X1 (if equipped)
- Driver Seatback Video Display (if equipped)
- Passenger Seatback Video Display (if equipped)
- If DTC B1265 sets as current, replace the module/component that was just re-connected.