Door Ajar Switch: Description
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
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.
The door ajar switches cannot be repaired and, if faulty or damaged, the door latch unit must be replaced: