Power Window Main Switch

Disconnect the negative (-) battery terminal.
Remove the front door trim panel. (Refer to the Body group - FRONT DOOR )
Disconnect the 14P connector from the switch.

Fig 1: Identifying 14P Connector From Switch
Courtesy of HYUNDAI MOTOR CO.
Check for continuity between the terminals in each switch position according to the table. If the continuity condition is not normal, replace the switch.

Fig 2: Continuity Reference Chart
Courtesy of HYUNDAI MOTOR CO.