Front Power Window Motor Inspection

Remove the front door trim panel. See FRONT DOOR .
Disconnect the 2P connector from the motor.

Fig 1: Illustrating Power Window Motor Connector
Courtesy of KIA MOTORS AMERICA, INC.
Connect the motor terminals directly to battery voltage (12V) 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.

Fig 2: Testing Power Window Motor Operation
Courtesy of KIA MOTORS AMERICA, INC.