Description And Operation: Anti-Theft

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
Door lock control switch
Driver door lock cylinder disarm switch
Hood switch
Horn
Liftgate ajar switch
Remote Keyless Entry (RKE) transmitter (part of the Integrated Keyhead Transmitter (IKT) key)
Keyless entry keypad
Turn signal lamps
SJB

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

pressing the LOCK button on the RKE transmitter (part of the IKT key).
pressing the door lock control switch to the LOCK position with the door open, then closing the door.
pressing the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.

The SJB monitors all of the inputs (all doors, hood and the 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 (all other doors, hood and the liftgate) would immediately begin their pre-arm phase. After the door that was open 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 will be 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.

The perimeter alarm can be disarmed only by:

pressing the UNLOCK button on the RKE transmitter (part of the IKT key).
turning the door lock cylinder to the UNLOCK position.
using a valid programmed (Passive Anti-Theft System (PATS) or IKT ) key to turn the ignition lock cylinder to the ON position.
entering the correct vehicle unlock code on the keyless entry keypad.

The alarm may be deactivated (not disarmed) by pressing the PANIC button on the RKE transmitter (part of the IKT key). This will not disarm the alarm, but it will stop the alarm from activation (horn sounding and turn signals flashing). The perimeter alarm will continue to be armed.

Refer to MULTIFUNCTION ELECTRONIC MODULES for the SJB .

Refer to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS for the keyless entry keypad and/or the RKE transmitter (part of the IKT key).