Principles of Operation

PRINCIPLES OF OPERATION

Perimeter Alarm Protection Feature
The following events occur when the perimeter alarm system is armed:
- If the doors are locked with the remote keyless entry (RKE) keypad or an RKE transmitter, the driver door module (DDM) communicates with the lighting control module (LCM) through the standard corporate protocol (SCP) network to arm the perimeter alarm.
- If the doors are locked with the driver door lock cylinder switch (inputs to the LCM), the LCM arms the perimeter alarm. The LCM then transmits an SCP message to the DDM to lock all doors (referred to as central locking).
- If the doors are locked using the driver or passenger power door lock switch, the DDM communicates with the LCM through the SCP network requesting perimeter alarm activation once all doors are closed.
- Twenty seconds after the last door is closed the arming sequence is complete.
- If a door, the hood, or luggage compartment lid is opened during the 20 second pre-arming period, the arming sequence does not complete. Once the door hood or luggage compartment lid is closed, the associated timer is reset and a new 20 second time-out occurs.

When armed, opening the doors, opening the hood, or opening the luggage compartment activates the alarm.

Arming of the system can be cancelled by:
- unlocking a door using one of the front door unlock switches before 20 seconds have elapsed since the lock command was received.
- unlocking the doors with the RKE keypad code.
- unlocking the doors with an RKE transmitter.
- unlocking the driver door with a key.
- turning the ignition switch to RUN with a key.

The luggage compartment key cylinder does not disarm the perimeter alarm (driver, passenger doors or hood). The luggage compartment alarm can be temporarily inhibited by using the RKE transmitter, RKE keypad or key to open the luggage compartment. Once the luggage compartment closes, the perimeter alarm systems immediately start monitoring the luggage compartment.

Any of the following procedures disarm a triggered system:
- unlocking the driver door with the key.
- unlocking the driver door using the RKE keypad code.
- unlocking the driver door by pressing the UNLOCK button of the RKE transmitter.
- turning the ignition switch to RUN with a key.

Panic Alarm
The personal security alarm is operated from the RKE transmitter. Pressing the button marked PANIC on the RKE transmitter causes the horns to sound and the high beam headlamps, parking lamps and courtesy lamps to flash for 2.75 minutes. The panic alarm can be activated when the perimeter alarm system is armed or disarmed with the ignition in the OFF position. The system is only disabled when the ignition switch is in the RUN, ACC or START positions. Deactivating a triggered personal security alarm is done by pressing the PANIC button again.