Toyota
Dodge Durango
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Vehicle Theft/Security Systems » Description and operation
Door lock cylinder switch

DESCRIPTION

The door lock cylinder switches are mounted to the back of the key lock cylinder inside each front door.

They are resistor multiplexed momentary switches that are hard wired between a body ground and the Central Timer Module (CTM) through the front door wire harnesses. These switches are driven by the key lock cylinders and contain three internal resistors.

One resistor is used for the neutral switch position, one for the lock position and one for the unlock position.

The door lock cylinder switches cannot be adjusted or repaired and, if faulty or damaged, they must be replaced. For complete circuit diagrams, refer to Vehicle Theft Security System in the Contents of Group 8W - Wiring Diagrams.

OPERATION

The door lock cylinder switches are actuated by the key lock cylinder when the key is inserted in the lock cylinder and turned to the lock or unlock positions.

The door lock cylinder switch closes a path to ground through one of three internal resistors for the CTM when the front door key lock cylinder is in the lock, unlock or neutral positions. The CTM reads the switch status through an internal pull-up, then uses this input and its internal programming to control the proper Vehicle Theft Security System (VTSS) and power lock system outputs.

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    Dodge Durango Service Manual / Vehicle Theft/Security Systems / Description and operation / Door lock cylinder switch

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