Front Power Window Motor

Remove (-) negative battery terminal.
Remove the front door trim.
(Refer to "FRONT DOOR ")
Disconnect the connector from the motor.

Fig 1: Front Power Window Motor Connector End View
Courtesy of KIA MOTORS AMERICA, INC.
Connect the motor terminals directly to a 12 volt battery 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: Front Power Window Motor Continuity Chart

Courtesy of KIA MOTORS AMERICA, INC.