Troubleshooting Hints - Power Windows

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. If windows move slowly, check for:
^ Mechanical binding or non-greased pivot joints.
^ Fully charged Battery.
^ Clean and tight ground G200.
2. If switches do not illuminate when Park Lamps are turned "ON," refer to "Interior Lights." Testing and Inspection
3. If the Express Down Feature does not work, but window moves down with each switch depression, replace the Window Switch, LH.
^ 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 (refer to General Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis. System Diagnosis - Power Windows