Front Power Window Motor

Remove the front door trim.
(Refer to Body - "FRONT DOOR TRIM ")
Disconnect the motor connector (A) from the motor.

Courtesy of KIA MOTORS AMERICA, INC.
Connect the terminal No. 2 and No. 1 to battery voltage (12V) and check that the motor operates smoothly when connecting the terminals below.
[Safety Window Motor]

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.
[Standard Window Motor]

Courtesy of KIA MOTORS AMERICA, INC.