Tailgate Latch Switch Test
Open the tailgate.
Remove the tailgate trim panel.
Disconnect the 2P connector (A) from the tailgate latch switch (B).
Check for continuity between the No. 1 and No. 2 terminals.
With the tailgate open, there should be continuity.
With the tailgate closed, there should be no continuity.
If the continuity is not as specified, replace the tailgate actuator assembly.
Install in the reverse order of removal.