Security (Description): Description and operation

Description

General

This description covers all aspects of the vehicle locking and alarm system and the immobilisation system.

The vehicle locking and alarm system is controlled by the central control unit (27VT) located on the back of the passenger compartment fusebox below the fascia.

The immobilisation system (EWS-3D) is essentially a stand alone system with its own controlling ECU located centrally behind the fascia.

Locking and Alarm System

The locking and alarm system comprises: l Central door locking master switch l Door switches l Roof switch (3 door only) l Remote handset (RF transmitter) l RF receiver l Driver's door key barrel l Door lock actuators l Tail door switch l Tail door release actuator l Bonnet switch l Inertia switch l Horn or BBUS l Alarm LED l Immobilisation ECU l ABS ECU Speed input l Volumetric sensor

Central Locking

The vehicle can be locked and unlocked by three methods; CDL switch, vehicle key or remote handset.

CDL Switch The CDL switch is located in the centre console. The CDL switch allows the occupants to CDL lock the vehicle from inside without arming the alarm. The CDL switch is inoperative if the inertia switch is tripped. The CDL locked state can be removed by operation of the CDL switch, remote handset or by a key unlock operation in the driver's door key barrel.

If the inertia switch is tripped while the doors are CDL locked and the ignition is on, all doors will automatically unlock.

Key Locking The vehicle can be CDL locked using the vehicle key in the driver's door key barrel. Turning the top of the key to the rear of the vehicle will CDL lock all doors. Turning the key a second time, within one second of the first turn, will superlock all doors.

Key Unlocking Single point entry is a programmable feature and its selection affects how the vehicle responds to key unlock requests: l Turning the top of the key once towards the front of a vehicle which is in a CDL state, with the alarm disarmed, will unlock all the doors irrespective of their existing lock status l Turning the top of the key once towards the front of a vehicle in a superlocked state without SPE selected and the alarm armed, will unlock all the doors irrespective of their existing lock status l Turning the top of the key once towards the front of a vehicle in a superlocked state with SPE selected and the alarm armed, will unlock the driver's door. The remaining doors will unlock to the CDL state and can be unlocked with a further key unlock operation