Flow of Diagnosis

Power Windows System Check

Troubleshooting Hints

1. Inspect the B/U, IGN3 and WDO circuit breakers to determine if they are open. If an open exists, locate and repair the cause of the overload and then replace the circuit breaker.
2. Inspect grounds G 101 and G 111 to assure that they are clean and tight.
3. Inspect the windows for mechanical failure or binding.
4. Inspect the power window relay and assure that it is operating properly.
5. Inspect the local circuit in the door power window motor. This circuit breaker will reset automatically after cooling and following an overload condition.
6. Inspect for broken (or partially broken) wire inside the insulation. This condition could cause system malfunction but prove to test good in a continuity or voltage test with the system disconnected. These circuits may be intermittent or resistive when in operation. If possible test for a voltage drop when the system is operational.
7. Inspect for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.