Operation CHARM: Car repair manuals for everyone.

Troubleshooting Hints - Power Windows

1. Check that Ground G305 is clean and tight.
2. If all power windows do not operate, check WDO Circuit Breaker.
3. If the window opens all of the way down and the motor is still running check for proper voltage and check the alternator.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected .These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (see Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis.