Front Power Window Motor

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

Fig 1: Identifying Front 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: Front Power Window Motor Terminals Continuity Chart
Courtesy of KIA MOTORS AMERICA, INC.

Fig 3: Front Power Window Motor Circuit Diagram
Courtesy of KIA MOTORS AMERICA, INC.