RAM 2500 Truck 4WD V8-5.9L VIN Z LDC (1998)
Door Switch: 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 Seatbelt Control Timer Module (SCTM)
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. Refer to Door Jamb Switch in the Replacement of
Vehicle Theft Security Systems for the service procedures.