Diagnosis is usually limited to simply checking wiring and motor contacts for minor damage that can be easily repaired. These checks include:
- Check power window switches for wiring damage and loose contacts.
- Checking the Power Window Fuses and/or Circuit Breakers (if they exist).
- Remove the panel (panels) door trim and check the wiring of the power window motors for loose connections or damage. Inspect the power window mechanisms for damage that could cause wire twisting.