Anti-Theft - Perimeter

Anti-Theft

NOTE: The Integrated Keyhead Transmitter (IKT) key is a standard Passive Anti-Theft System (PATS) key with a Remote Keyless Entry (RKE) transmitter incorporated into the keyhead. For PATS, refer to Anti-Theft - Passive Anti-Theft System (PATS) Description and Operation. For RKE, refer to Handles, Locks, Latches and Entry Systems Description and Operation.

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

The perimeter anti-theft system consists of the following:

- Door ajar switches (located in the latches)
- Exterior lamps
- Hood switch (located in the left front of the engine compartment, on the core support)
- Horn (located forward of the RF wheel well)
- Key-in-ignition switch
- Keyless entry keypad (if equipped)
- Luggage compartment lid disarm switch (located in the luggage compartment lid lock cylinder) (also known as the anti-theft inhibit switch)
- RKE transmitter (part of the IKT key)
- SJB (located under the instrument panel on the left side)

The perimeter anti-theft feature is controlled by the SJB. The alarm can be armed by using 1 of 3 commands:

- Pressing the LOCK button on the IKT key
- Pressing the door lock control switch to LOCK with the accompanying door open, then close the door
- Pressing the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad (if equipped)

The SJB monitors the door ajar switches, the hood switch and the luggage compartment lid disarm switch (all doors, hood and luggage compartment lid must be closed and the key must be out of the ignition lock cylinder). The SJB arms the perimeter alarm after all of the inputs are closed for 20 seconds. From the time each individual input is closed, to the time the perimeter alarm is armed for that particular input (approximately 20 seconds), is the "pre-arm phase". The pre-arm phase is separate for each individual input. If the door lock control switch is pressed to LOCK with the accompanying door open, all of the inputs that are closed (hood, luggage compartment lid) immediately begin their pre-arm phase. After the door that was open is closed, that door begins its pre-arm phase. This causes all other entry points to be armed a few seconds before the last open entry point. The perimeter alarm arms in stages in relation to which input was closed first after the arming command was given.

In the event of an unauthorized entry, the SJB activates the alarm. 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 signals to flash in regular intervals.

An unauthorized entry is identified by the SJB when a door, hood or luggage compartment lid ajar switch is detected by the SJB as having been opened and no electronic unlock function (the RKE transmitter unlock button being pressed) was received. If an unauthorized entry occurs at a passenger door, hood or luggage compartment lid, the SJB activates the perimeter alarm.

If an unauthorized entry occurs at the driver door with the SJB detecting the driver door ajar switch as being opened (with no electronic unlock command detected by the SJB), there is a 12-second delay with the Instrument Panel Cluster (IPC) issuing a chime during this 12-second delay. If a valid, programmed PATS key does not turn the ignition switch to the ON position within 12 seconds of the driver door ajar switch being detected as open, the SJB considers this event to be an unauthorized entry and activates the perimeter alarm. At this time, the message center in the IPC will display "TO STOP ALARM, START VEHICLE".

An authorized entry is identified by the SJB as any of the ajar switches being opened after an electronic unlock command from a programmed RKE transmitter or keyless entry keypad (if equipped) has been detected by the SJB.

The door lock control switches cannot disarm the perimeter alarm.

The perimeter alarm can be disarmed only by:

- pressing the UNLOCK button on the RKE transmitter (part of the IKT key).
- using a valid programmed PATS key to turn the ignition switch to the ON position.
- entering the correct vehicle unlock code on the keyless entry keypad (if equipped).

The perimeter alarm can be deactivated (not disarmed) by pressing the PANIC button on the RKE transmitter (part of the IKT key). This action will not disarm the alarm, but stops the alarm from activation (horn sounding and turn signal lamps flashing). The perimeter alarm continues to be armed.

Perimeter Alarm Inhibit

The anti-theft inhibit switch (also known as the luggage compartment lid disarm switch) can be used to inhibit (stop/prevent) an armed system from activating the alarm. If the luggage compartment lid is opened by turning the key in the luggage compartment lid lock cylinder, the SJB will not activate the perimeter alarm. The perimeter alarm will continue to be armed for the other closures (all of the doors and the hood), but the alarm will not activate with the luggage compartment lid open.

If the luggage compartment lid is released using the luggage compartment lid release button on the IKT key, the perimeter alarm will be disarmed for the luggage compartment lid only. The rest of the vehicle closures will continue to be armed.