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:

The components of the system are:

Use the following procedure in order to arm the system:

1. Place the shift lever in P (park).
2. Turn OFF the ignition.
3. Open any door.

Important: The system is not armed if the doors are locked manually, the power door lock switch or remote transmitter must be used to arm the CTD system.

4. Lock the doors with any power door lock switch or the LOCK button on the transmitter. The system is in standby mode and will not start the arming timer until all doors are closed.
5. The system will arm approximately 30 seconds from the time that the last door is closed. This delay is shown by the SECURITY indicator ON STEADY. When the indicator transitions to OFF, the system is armed.

Locking the vehicle may be accomplished without arming the CTD system. Use of the manual door locks or using the key to lock the doors will lock the vehicle but will not arm the CTD system.

If system arming has been requested by the power door lock switch or the transmitter, it must be disarmed.

Important: Using the power door unlock switch or manually unlocking the doors does not disable the CTD arm mode. Also, disconnecting the battery or pulling fuses does not disable the arm mode, since the remote function actuator module stores the CTD mode status in memory.

Refer to Personalization Description and Operation in Personalization.

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

The CTD system uses the door jamb switches in the door lock assembly as one method to activate the alarm. The driver door module (DDM) monitors all door jamb switches via a discrete input or the door lock serial data (DLSD) from the other door modules. If the remote control door lock receiver (RCDLR) receives a class 2 message from the DDM that a door is open and the CTD system is armed, the RCDLR activates the alarm.

The CTD system is an internal function of the remote control door lock receiver which utilizes class 2 serial data and various switch input information to perform CTD functions. When the RCDLR detects an unauthorized entry it activates the horns and exterior lamps. The RCDLR has 5 basic modes (disarmed, standby, delayed, armed, and alarm) for operating the CTD system. The different modes are described below.

1. The RCDLR has the CTD system in a disarmed mode until the following conditions are detected:

•	Ignition key turned to the OFF position.

•	Any door open.

•	Doors locked by either the power door lock switch or the LOCK button on the transmitter.

2. TheRCDLR enters the standby mode when the above conditions are detected. In standby mode the RCDLR commands the instrument cluster to illuminate the SECURITY indicator via a descrete input. (If all the doors are closed and the LOCK button on the transmitter is used, the RCDLR enters the delayed mode.
3. When the last door is closed, the RCDLR enters the delayed mode for 30 seconds. In delayed mode the RCDLR commands the instrument cluster to illuminate the SECURITY indicator via a descrete input.
4. After 30 seconds, the RCDLR enters the armed mode. In armed mode the RCDLR commands the instrument cluster to turn off the SECURITY indicator via a descrete input. Any forced entry activates the alarm mode.
5. When the RCDLR detects a forced entry, the RCDLR enters the alarm mode. The RCDLR activates the horn and exterior lamps for 30 seconds. This is followed by a 3 minute time-out with the horn no longer active. If no new intrusions are detected after the time-out, the horn is not active. The system must be disarmed or the intrusion condition removed after the time-out for the system to exit alarm mode.

The CTD system can be armed with the windows or sunroof open.

The remote control door lock receiver (RCDLR) monitors the following inputs:

The remote control door lock receiver (RCDLR) commands the following: