Diagnosis And Testing - Power Window Switch: Notes

Any diagnosis of the power window system should begin with the use of the DRB III(R) diagnostic tool. For information on the use of the DRB III(R), refer to  ELECTRONIC CONTROL MODULES  . 

The diagnosis found here applies only to the rear door power window switches. If the problem being diagnosed is an inoperative power window switch illumination lamp, but the power window switch operates as designed, replace the faulty rear door power window switch (verify the power lockout switch is not actuated). 

For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS .

1. Disconnect and isolate the battery negative cable.
2. Remove the power window switch from the rear door trim panel (Refer to REMOVAL  ).
3. Check the rear door power window switch continuity. See POWER WINDOW SWITCH TEST  (Refer to Fig 1 ). If OK, (Refer to DIAGNOSIS AND TESTING - POWER WINDOWS  ).
   Fig 1: Identifying Rear Power Window Switch

   Courtesy of DAIMLERCHRYSLER CORP.