Power Window Main Switch

Remove the switch from the door trim panel.
Check for continuity between the terminals. If continuity is not as specified in the table in the figure, replace the power window switch.

Fig 1: Checking Power Window Main Switch Continuity
Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Identifying Power Window Main Switch Connector Terminals
Courtesy of KIA MOTORS AMERICA, INC.