Sliding Power Window Motor Inspection

Remove (-) negative battery terminal.
Remove the sliding door trim panel. Refer to REAR DOOR .
Disconnect the motor connector from the motor.

Fig 1: Sliding Power Window Motor Connector End View
Courtesy of KIA MOTORS AMERICA, INC.
Connect the motor terminals directly to battery voltage and check that the motor operates smoothly. Next, reverse the polarity and check that the motor operates smoothly in the reverse direction. If the operation is abnormal, replace the motor.