Anti-Theft - Perimeter
Anti-Theft
NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).
The perimeter alarm system is controlled by the SJB (Smart Junction Box) on vehicles equipped with Integrated Keyhead Transmitter (IKT) keys. On vehicles equipped with Intelligent Access (IA) keys, the perimeter alarm system is controlled by the Remote Function Actuator (RFA) module.
The vehicle can be equipped with a conventional PATS (Passive Anti-Theft System) (standard) or with IA (Intelligent Access) with push button start (option). The conventional PATS (Passive Anti-Theft System) vehicle uses an IKT (Integrated Keyhead Transmitter) key and the vehicle equipped with IA (Intelligent Access) with push button start uses an IA (Intelligent Access) key. The IA (Intelligent Access) key does not use a typical key blade found on most conventional-type keys, although the IA (Intelligent Access) key does contain a backup mechanical key blade that can be used in the driver door lock cylinder to unlock the driver door in an emergency. This action (using the backup mechanical key blade in the door lock cylinder) is monitored by the Driver Door Module (DDM) and this information is sent to the RFA (Remote Function Actuator) module (with IA (Intelligent Access) key) over the Medium Speed Controller Area Network (MS-CAN).
Integrated Keyhead Transmitter (IKT)
The perimeter anti-theft alarm system consists of the following:
- Door ajar switches
- Door lock control switch
- Hood switch
- Horn
- Luggage compartment lid ajar switch
- Remote Keyless Entry (RKE) transmitter (part of the IKT (Integrated Keyhead Transmitter) key)
- Keyless entry keypad
- Turn signal lamps
- SJB (Smart Junction Box)
The perimeter anti-theft feature is controlled by the SJB (Smart Junction Box). The alarm can be armed by:
- pressing the LOCK button on the RKE (Remote Keyless Entry) transmitter (part of the IKT (Integrated Keyhead Transmitter) key).
- pressing the door lock control switch to the lock position with the door open, then closing the door.
- pressing and holding the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.
In the event of an unauthorized entry, the SJB (Smart Junction Box) activates the alarm. The alarm continues to operate for 2 minutes and 45 seconds, unless the battery dies or the alarm is deactivated. When the alarm is activated, the SJB (Smart Junction Box) 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.
An unauthorized entry is identified by the SJB (Smart Junction Box) when a passenger door or hood is detected by the SJB (Smart Junction Box) as having been opened and no electronic unlock function (RKE (Remote Keyless Entry) transmitter UNLOCK button being pressed) was received. If this occurs, the SJB (Smart Junction Box) activates the perimeter alarm immediately.
An authorized entry is identified by the SJB (Smart Junction Box) as any of the ajar switches being opened after an electronic unlock command from a programmed RKE (Remote Keyless Entry) transmitter or from the keyless entry keypad has been detected by the SJB (Smart Junction Box).
If the SJB (Smart Junction Box) detects the driver door ajar switch as being opened (with no electronic unlock command detected by the SJB (Smart Junction Box)), there is a 12-second delay with the Instrument Panel Cluster (IPC) issuing a chime during that 12 seconds. If a valid, programmed PATS (Passive Anti-Theft System) 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 (Smart Junction Box) considers this to be an unauthorized entry and activates the perimeter alarm. At this time, the message center in the IPC (Instrument Panel Cluster) displays "TO STOP ALARM, START VEHICLE".
With each alarm event, the input that triggered the alarm is recorded as a PID in the SJB (Smart Junction Box). Up to 7 events can be recorded and used to determine what activated the alarm. If there has been more than 7 events, only the most recent 7 events can be reviewed.
The perimeter alarm can be disarmed only by:
- pressing the UNLOCK button on the RKE (Remote Keyless Entry) transmitter (part of the IKT (Integrated Keyhead Transmitter) key).
- using a valid, programmed (PATS (Passive Anti-Theft System) or IKT (Integrated Keyhead Transmitter)) key to turn the ignition to the ON position.
- entering the correct vehicle unlock code on the keyless entry keypad.
The alarm can be deactivated (not disarmed) by pressing the panic button on the RKE (Remote Keyless Entry) transmitter (part of the IKT (Integrated Keyhead Transmitter) key). This does not disarm the alarm, but stops the alarm from activation (horn sounding and turn signals flashing). The perimeter alarm continues to be armed.
Intelligent Access (IA)
The perimeter anti-theft alarm system consists of the following:
- Door ajar switches
- Door lock control switch
- Door disarm switch
- Hood switch
- Horn
- Luggage compartment lid ajar switch
- RKE (Remote Keyless Entry) transmitter (part of the IA (Intelligent Access) key)
- Keyless entry keypad
- Turn signal lamps
- RFA (Remote Function Actuator) module
The perimeter anti-theft feature is controlled by the RFA (Remote Function Actuator) module. The alarm can be armed by:
- pressing the LOCK button on the RKE (Remote Keyless Entry) transmitter (part of the IA (Intelligent Access) key).
- pressing the door lock control switch to the lock position with the door open, then closing the door.
- turning the mechanical key to the lock position in the driver door lock cylinder.
- pressing and holding the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.
In the event of an unauthorized entry, the RFA (Remote Function Actuator) module activates the alarm. When the alarm is activated, the RFA (Remote Function Actuator) module sends a message over the MS-CAN (Medium Speed Controller Area Network) to the SJB (Smart Junction Box), to intermittently ground the horn relay, causing the horn to sound in regular intervals, and intermittently power the turn signals, causing the turn signal lamps to flash in regular intervals.
The perimeter alarm can only be disarmed by:
- pressing the UNLOCK button on the RKE (Remote Keyless Entry) transmitter (part of the IA (Intelligent Access) key).
- turning the door lock cylinder to the unlock position.
- using a valid, programmed IA (Intelligent Access) key to turn the ignition to the ON mode.
- entering the correct vehicle unlock code on the keyless entry keypad.
- touching the keyless entry keypad and a valid, programmed IA (Intelligent Access) key is within 1 m (3 ft) of the driver door handle antenna.
The alarm can be deactivated (not disarmed) by pressing the panic button on the RKE (Remote Keyless Entry) transmitter (part of the IA (Intelligent Access) key). This does not disarm the alarm, but stops the alarm from activation (horn sounding and turn signals flashing). The perimeter alarm continues to be armed.
The Rotunda tool numbers are 164-R7030 for the mechanical key blade and 164-R7028 for the IA (Intelligent Access) key (less the mechanical key blade). The IA (Intelligent Access) key and mechanical key blade cannot be purchased together as a single unit.