General Description

The CTD system (when armed) is designed to deter vehicle content theft by pulsing the horns and exterior lamps for approximately 30 seconds when an unauthorized vehicle entry is detected. However, the CTD system does not affect engine starting.

An unauthorized entry can be any of the following with the CTD system armed:

When any door is opened without being unlocked by using the key to unlock either of the front doors or the UNLOCK command from a keyless entry transmitter.

The components of the system are:
^ The Dash Integration Module (DIM)
^ The door lock actuators
^ The door modules
^ The Instrument Panel Cluster (IPC)
^ The Rear Integration Module (RIM)
^ Remote Control Door Lock Receiver (RCDLR)

The following is a description of each component used in the CTD system:

Door Lock Actuators
The CTD system uses the door jamb switches that are internal to the door lock actuators as one method to activate the alarm. The door modules monitor the door jamb switch via a discrete input to the appropriate door module. When the door is open the door jamb switch grounds the door open input to the door module. The CTD system uses the door lock cylinder disarm switches that are internal to the door lock actuators to disarm an armed system. When the lock cylinder is turned to the unlock position the switch grounds the disarm input to the door module.

Door Modules
The Drivers Door Module (DDM) communicates with the other door modules via the power door serial data circuit. The DDM sends a class 2 message to the RIM in order to perform the appropriate function.


Remote Control Door Lock Receiver (RCDLR)
The keyless entry system is an internal function of the Remote Control Door Lock Receiver (RCDLR). The keyless entry system can arm and disarm the CTD system. When the RCDLR receives a door lock or unlock signal from the transmitter, the RCDLR sends a class 2 message to the Rear Integration Module (RIM) in order to perform the appropriate arm/disarm functions.