The door ajar switches are integral to the door latches on each door. The switches close a path to ground for the Central Timer Module (CTM) when a door is opened, and open the ground path when a door is closed.
The door ajar switches cannot be repaired and, if faulty or damaged, the door latch unit must be replaced.
Liftgate ajar switch
The liftgate ajar switch is integral to the latch on the liftgate. The switch closes a path to ground for the Central Timer Module (CTM) when the liftgate is opened, and opens the ground path when the liftgate is closed.
The liftgate ajar switch cannot be repaired and, if faulty or damaged, the liftgate latch unit must be replaced.