System Operation

Anti-Theft - Perimeter - with Intelligent Access (IA)

System Operation

System Diagram





Network Message Chart

Module Network Input Messages - BCM (Body Control Module)





Module Network Input Messages - IPC (Instrument Panel Cluster)






Anti-Theft - Perimeter

Arming the Perimeter Alarm

The perimeter alarm is ready to arm any time the ignition is off. Any of the following pre-arms the alarm system:

- pressing the lock button on a RKE (Remote Keyless Entry) transmitter.

- pressing the door lock control switch to the lock position with the door open, then closing the door.

- touching the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.

Once the system is pre-armed, there is a 20-second countdown before the perimeter alarm is armed. Each entry point to the vehicle (hood, door, or liftgate) is armed separately and must be closed before that entry point begins the 20-second countdown to become armed. If all entry points are closed, the turn signals flash indicating that all entry points are entering the 20-second countdown.

Perimeter Alarm Activation

The perimeter alarm has a 12-second delay when the driver door is unlocked and opened using a key in the door lock cylinder. During the delay, a chime sounds and TO STOP ALARM START VEHICLE is displayed in the message center. If the perimeter alarm is not disarmed within the 12-second delay, the alarm is activated.

The perimeter alarm is activated when:

- any passenger door, liftgate, or the hood is opened without first receiving an electronic unlock command from a RKE (Remote Keyless Entry) transmitter or keyless entry keypad.

- the driver door is opened without first receiving an unlock command from a RKE (Remote Keyless Entry) transmitter, keyless entry keypad, or IA (Intelligent Access) command and the 12-second delay has expired.

- the passenger door or liftgate is opened without first receiving an IA (Intelligent Access) command.

- the ignition is transitioned to RUN without a valid PATS (Passive Anti-Theft System) key read received.

The perimeter alarm only activates 10 times per arming cycle. After that the alarm does not activate. To enable the perimeter alarm again, disarm the perimeter alarm and then arm it again.

Disarming the Perimeter Alarm

The perimeter alarm can be disarmed by:

- pressing the unlock button on a programmed RKE (Remote Keyless Entry) transmitter.

- pressing the liftgate release button on a programmed RKE (Remote Keyless Entry) transmitter.

- unlock the driver or passenger door with the IA (Intelligent Access) feature.

- open the liftgate with the IA (Intelligent Access) feature.

- a programmed IA (Intelligent Access) key is inside the vehicle and the start/stop switch is pressed.

- entering the correct vehicle unlock code on the keyless entry keypad.

The perimeter alarm can be deactivated by pressing the panic button on a RKE (Remote Keyless Entry) transmitter. All of the lamps stop flashing and the horn stops sounding, but the alarm is still armed.

Intelligent Access (IA) Key Disable

For security reasons, when the perimeter alarm enters an armed state, the RFA (Remote Function Actuator) module searches the interior of the vehicle for any programmed IA (Intelligent Access) keys. If the RFA (Remote Function Actuator) module detects any programmed IA (Intelligent Access) keys inside the vehicle when the perimeter alarm is armed, it disables the IA (Intelligent Access) key. The RKE (Remote Keyless Entry) and the IA (Intelligent Access) functions of that key still operate, but the RFA (Remote Function Actuator) module ignores any start command associated with that key. The disabled IA (Intelligent Access) key is enabled when the perimeter alarm is disarmed.