Operation CHARM: Car repair manuals for everyone.

Door Lock Actuators

The CTD system uses the door jamb switches in the door lock assembly as one method to activate the alarm. The Drivers Door Module (DDM) monitors all door jamb switches. If the Rear Integration Module (RIM) receives a class 2 message from the DDM that a door is open and the CTD system is armed, the RIM activates the alarm.