Troubleshooting Hints - Power Windows

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Always check terminal contact before replacing any component.
2. If all power windows are inoperative, check circuit breaker 1 in Maxi(R) Fuse Block. Reset circuit breaker if tripped. If circuit breaker trips again when ignition switch is set to RUN position, check for short to ground in CKT 641.
3. If windows move slowly, check that:
^ Windows are free of mechanical binding; pivot joints are greased.
^ Battery is fully charged.
^ Ground G304 is clean and tight.
4. If a motor's internal circuit breaker trips, it does not reset until voltage is removed from motor.
5. If power windows do not operate for approximately 10 minutes (or until a door is opened) after ignition switch is turned to OFF, refer to Accessory Delay Module for diagnosis (Deville/Concours only). Accessory Delay Module
6. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems. (Refer to Diagnostic Aids for General Troubleshooting Procedures) Diagnostic Aids