Trunk Lid Open Switch

Remove the trunk trim.
For sedan, refer to TRUNK . For coupe, refer to TRUNK LID .
Check for continuity between the Trunk actuator terminals.

Fig 1: Trunk Actuator & Connector End View
Courtesy of KIA MOTORS AMERICA, INC.
If continuity is not specified, inspect the switch

Fig 2: Connector Terminals Continuity Chart
Courtesy of KIA MOTORS AMERICA, INC.