Circuit/System Testing
WARNING: This page is about a different car, the 2015 GMC Terrain and 2015 Chevrolet Equinox. 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:
- T3 Audio Amplifier X1
- P17 Color Information Display Module X1 (if equipped)
- P22E Driver Seatback Video Display (if equipped)
- P22F Passenger Seatback Video Display (if equipped)
- K108 Active Noise Cancellation Module (if equipped)
- Install the radio B+ fuse. Ignition ON, A11 Radio ON.
- Verify that a test lamp illuminates between the control circuit terminals listed below and ground:
- T3 Audio Amplifier X1 terminal 8
- P17 Color Information Display Module X1 terminal 6 (if equipped)
- P22E Driver Seatback Video Display terminal 2 (if equipped)
- P22F Passenger Seatback Video Display terminal 2 (if equipped)
- K108 Active Noise Cancellation Module terminal 2 (if equipped)
- If the test lamp does not illuminate.
- Ignition OFF. Disconnect the X1 harness at the A11 Radio.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance.
- Test for less than 2 Ω in the control circuit end to end.
- If greater than 2 Ω, repair the open/high resistance in the circuit.
- If less than 2 Ω, replace the A11 Radio.
- If the test lamp illuminates.
- Verify that DTC B1265 does NOT set as each component is connected one at a time.
- T3 Audio Amplifier X1
- P17 Color Information Display Module X1 (if equipped)
- P22E Driver Seatback Video Display (if equipped)
- P22F Passenger Seatback Video Display (if equipped)
- K108 Active Noise Cancellation Module (if equipped)
- If DTC B1265 sets.
Replace the module/component that was just connected
- If DTC B1265 does not set.
- All OK.