Description And Operation: Anti-Theft: Notes

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The perimeter anti-theft alarm system consists of the following:

Door ajar switches (part of the latch)
Door lock control switch
Door disarm switch (part of the driver door latch, only on vehicles equipped with Intelligent Access (IA))
Hood switch
Horn
Luggage compartment lid ajar switch (part of the latch)
Remote Keyless Entry (RKE) transmitter (part of the key)
Keyless entry keypad
Turn signal lamps
SJB
Remote Function Actuator (RFA) module (vehicles with IA only)
Driver Door Module (DDM) (vehicles with IA only)

The perimeter anti-theft feature is controlled by the SJB. The alarm can be armed by:

pressing the LOCK button on the RKE transmitter.
pressing the door lock control switch to the LOCK position with the door open, then closing the door.
touching and holding the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.

The perimeter alarm can be disarmed by:

pressing the UNLOCK button on the RKE transmitter.
turning the door lock cylinder to the UNLOCK position (IA vehicles only).
using a valid programmed, Passive Anti-Theft System (PATS) key to turn the ignition lock cylinder to the ON position (vehicles with Integrated Keyhead Transmitter (IKT) only)
putting the vehicle in RUN mode using the push-button start with a valid IA present (vehicles with IA only).
entering the correct vehicle unlock code on the keyless entry keypad.

The SJB monitors all of the inputs (all doors, hood, luggage compartment lid/liftgate must be closed and the key must be out of the ignition switch) and 20 seconds after all of the inputs are closed, arms the perimeter alarm. From the time each individual input is closed, to the time the perimeter alarm is armed for that particular input, is the "pre-arm phase". The pre-arm phase is separate for each individual input. If the door lock control switch was pressed to LOCK with the door open, all of the inputs that are closed (hood, luggage compartment lid) would immediately begin their pre-arm phase. As soon as the open door is closed, that door would begin its pre-arm phase. This would cause the other inputs to be armed a few seconds before that particular door. The perimeter alarm would arm in stages, in relation to which input was closed first after the arming command was given.

In the event of an unauthorized entry, the alarm is activated by the SJB. When the alarm is activated, the SJB intermittently grounds the horn relay, causing the horn to sound in regular intervals, and intermittently powers the turn signals, causing the turn signal lamps to flash in regular intervals.