RAM 2500 Truck 4WD L6-5.9L DSL Turbo VIN 6 (1999)
Door Sensor/Switch (For Alarm): Description and Operation
SYSTEM OPERATION
The door jamb switches are mounted to the door hinge pillars. 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 jamb switches cannot be repaired and, if faulty or damaged, they must be replaced.