Front Power Window Motor Inspection

Remove the front door trim panel.
(Refer to the "FRONT DOOR ")
Disconnect the connector from the motor.

Fig 1: Identifying Front Power Window Motor Connector Terminals
Courtesy of KIA MOTORS AMERICA, INC.
Connect the motor terminals No. 1 and No. 2 directly to battery voltage (12V) and connect the motor terminals No. 6 directly to battery (-). And then check that the motor operates smoothly. If the operation is abnormal, replace the motor.
[Safety Power Window]

Fig 2: Front Power Window Motor Terminals Voltage Chart - Safety Power Window
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.
[General]

Fig 3: Front Power Window Motor Terminals Voltage Chart - General
Courtesy of KIA MOTORS AMERICA, INC.