Circuit/System Testing
WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the system works with a known good remote
- If the known good remote operates properly, replace the suspect remote.
- Operate the radio and turn on the rear seat audio (RSA). Verify the remote headphones operate normally.
- If the remote headphones do not operate properly, go to Video Entertainment System Wireless Headphone Inoperative .
- Install a scan tool, monitor the button presses in the radio data display. Verify the radio responds to the remote when the buttons are pressed.
- If the radio does not respond, test the remote infra-red signal circuits between the radio and the rear audio controller for an open, short to ground or short to B+.
- Ignition OFF, Disconnect the video display harness connector. Ignition ON, test for voltage on the infra-red power circuit.
- If voltage is not present, test or repair open or short to ground on the infra-red power circuit.
- Test the infra-red signal circuits between the video display and the rear seat audio controller for an open, short to ground or short to B+.
- If all circuits test normal, replace the video display screen.
IMPORTANT:
Test or replace the remote batteries before performing the circuit/system test.