How to Diagnose a Power Window Problem
If you suspect that one of your vehicle’s windows is not working correctly, the first step is to diagnose the problem. The following steps can help you identify the source of the issue:
Check the switch: Start by testing the window switch to make sure it is working correctly. If the switch is faulty, it may not be sending an electrical current to the motor.
- Test the motor: If the switch is working correctly, the next step is to test the motor. You can do this by disconnecting the motor from the wiring harness and applying power directly to the motor. If the motor does not respond, it may be faulty and need to be replaced.
- Inspect the regulator: The regulator is responsible for controlling the movement of the window. If the motor and switch are working correctly, but the window still won’t move, the problem may be with the regulator.
- Check the wiring: Wiring problems can also cause power window issues. Check the wiring harness to make sure there are no loose connections or damaged wires.
Of course, you can always bring it into a professional auto electrician to have an expert carry out the diagnosis. We always check each component when establishing where the fault lies which gives you peace of mind knowing all bases are covered.