Rear Power Window Motor Inspection

Remove the rear door trim panel.
(Refer to "REAR DOOR ")
Disconnect the 2P connector from the motor.

Fig 1: Identifying Rear Power Window Motor 2P 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: Motor Terminals Continuity Chart
Courtesy of KIA MOTORS AMERICA, INC.