Anti-Theft - Active: Overview

The active anti-theft system is available with three different levels of vehicle protection depending on market specification:

Hinged panel sensing
Hinged panel and intrusion sensing
Hinged panel, intrusion and inclination sensing.

The system is controlled by software in the central junction box (CJB) which indicates an alarm trigger condition:

Visually, using the direction indicators.
Audibly, using the vehicle horn and, depending on market specification, either a passive or active sounder.

The passive sounder is an anti-theft disc horn and the active sounder is a BBUS (battery backed-up sounder).

The BBUS is an intelligent unit which communicates to the central junction box (CJB) over a local interconnect network (LIN) connection. The BBUS is fitted with an inclination sensor.

Monitoring of the hinged panels is carried out using switches located in each door latch assembly, the hood latch assembly, and the tailgate latch assembly. The condition of the switches is monitored by the central junction box (CJB).

Monitoring of front door lock status is carried out using switches located in the door latch mechanisms. The condition of the switches is monitored by the front door modules and transmitted to the central junction box (CJB) over the medium-speed controller area network (CAN).

Monitoring of the cabin interior is carried out using an interior motion sensor, which comprises an ultrasonic sound wave sensor to determine if there is movement within the cabin. Information from the interior motion sensor is communicated to the central junction box (CJB) over a local interconnect network (LIN) connection.

When armed, the active anti-theft system can be triggered in one of the following ways:

A door ajar switch indicates a door is open.
The hood or upper tailgate ajar switches indicate that either is open.
Either front door latch mechanism indicates a door has been unlocked.
The emergency key blade is used to open the left-hand (LH) front door.
The central junction box (CJB) is disconnected (this may result in only a partial trigger).
An attempt is made to start the engine without a valid signal from the Smart Key.
The BBUS is disconnected (partial trigger only).
The vehicle battery is disconnected on a vehicle fitted with a BBUS (partial trigger only).
The inclination sensor detects a change in vehicle attitude.
The interior motion sensor detects movement within the cabin.
Panic alarm from the Smart Key.

CAUTION: The interior motion sensor electrical connections, particularly those to the sensors mounted in the roof console, are very delicate and must be handled with care.

CAUTION: The interior motion sensor is an electro-statically sensitive part and should only be handled in an electro-statically controlled environment.