General Information

When the Content Theft Deterrent (CTD) system is armed, the system is designed in order to deter vehicle theft by pulsing the horns and the exterior lamps when an unauthorized vehicle entry is detected. The following list includes examples of an unauthorized entry:
^ Forced entry into the rear compartment
^ When any door is opened.

The body control module (PZM) controls all of the alarm functions. When the PZM has detected an authorized entry, the PZM applies ground to the following components:
^ The horn relays
^ The park lamp relays
^ The headlamp relays

The PZM applies ground once per second for approximately 3 minutes, or until a valid input to disarm is received.

The PZM has the following 5 basic modes for operating the CTD system:
1. Disarmed
2. Standby
3. Delayed
4. Armed
5. Alarm

The different modes are described below.

The PZM has the CTD system in a disarmed mode until the following conditions are detected:
^ The ignition key is turned to the LOCK position.
^ Any door is opened.
^ The doors are locked by either the power door lock switch or the keyless entry transmitter (key fob).
The PZM detects these conditions and enters the standby mode. The PZM sends a class 2 message requesting the Instrument Cluster (IPC) to flash the security indicator. If all of the doors are closed and the key fob is used in order to lock the doors, the PZM goes directly to the delayed mode.

When the last door is closed, the PZM enters the delayed mode for 30 seconds. The time period may be substantially lower for vehicles with under 20 miles on the odometer. The PZM sends a class 2 message requesting the IPC to illuminate (stop flashing) the security indicator.

After 30 seconds, the PZM enters the armed mode. The PZM sends a class 2 message requesting the IPC to turn off the security indicator.

The PZM is now in the armed mode. Any forced entry activates the alarm mode.

If a door unlock request is received by the PZM during the arming sequence, the PZM will not arm the system. The PZM then sends a class 2 message requesting the IPC to turn off the security indicator. In order to arm the system at this point, repeat the arming sequence.