Anti-Theft - Perimeter

The BCM controls the operation of the perimeter alarm. It monitors inputs from the RKE system, the passive entry system, the power door lock system, the PATS and the ignition status to determine when to arm the perimeter alarm.

The BCM monitors all of the door ajar switches, the hood ajar switch, the CAN and the ignition status to determine when to activate the perimeter alarm. When the BCM detects an input indicating an unauthorized entry into the vehicle, the BCM activates the perimeter alarm by sounding the horn and flashing all the turn signals and interior courtesy lamps at regular intervals.

The BCM monitors the RKE system, the passive entry system, and the PATS to determine when to disarm the perimeter alarm.

Arming The Perimeter Alarm 

The perimeter alarm is ready to arm any time the ignition is off. The perimeter alarm pre-arms when:

• pressing the lock button on a RKE transmitter.
• pressing a door lock control switch to the lock position with the door open, and then closing the door.

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 and doors) 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 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. If the perimeter alarm is not disarmed within the 12-second delay, the alarm activates.

The perimeter alarm activates when:

• a front door is opened without first receiving an unlock command from a programmed RKE transmitter, and the 12-second delay has expired.
• a sliding door, a cargo door or the hood is opened without first receiving an electronic unlock command from a programmed RKE transmitter.
• the ignition transitions to RUN without a valid PATS 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 disarms when:

• pressing the unlock button on a programmed RKE transmitter.
• pressing the cargo unlock button on a programmed RKE transmitter.
• using a programmed key to change the ignition to RUN.

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