Power Window Main Switch Inspection: Notes

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

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