Door Switch: Description and Operation

DOOR AJAR SWITCH

The door ajar switches, located in each door pillar, are a self-adjusting, spring loaded plunger. The other end of the switch is actuated by the hinge face of the door. The self adjusting feature of the switch plunger is a one-time feature, it can be adjusted inward (compressed), but cannot be readjusted outward (extended) once it has been compressed. This normally open switch only closes when the door is open.

The door ajar switch cannot be repaired and, if faulty or damaged, it must be replaced.

The door ajar switches control a path to ground through separate driver and passenger door ajar switch sense circuit inputs to the instrument cluster chime warning circuitry when a door is opened. The door ajar switch inputs to the instrument cluster can be diagnosed using conventional diagnostic tools and methods.