Trunk lid Switch

Remove the trunk trim.
(Refer to TRUNK TRIM REPLACEMENT .)
Disconnect the 3P connector from the actuator.

Fig 1: Identifying Trunk Lid Switch Actuator 3P Connector
Courtesy of KIA MOTORS AMERICA, INC.
Check for continuity between the terminals in each switch position according to Fig 2.

Fig 2: Trunk Lid Switch Continuity Reference Chart
Courtesy of KIA MOTORS AMERICA, INC.