Tailgate Switch

WARNING: This page is about a different car, the 2015 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.

Check for continuity between the tailgate latch terminals.

Fig 1: Tailgate Latch Terminals
Courtesy of KIA MOTORS AMERICA, INC.
If continuity is not specified, inspect the switch

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