Specifications

212

GENERAL OPERATION

Decoder Unit (BII)

This system is similar to many other immobiliser systems as it uses a

transponder within the head of the key to send its code to the immobiliser

when interrogated via the immobiliser ignition key barrel antenna. The

code from the key is transferred to the Decoder Unit which has the follow-

ing functions:

• Decoding the key transponder signal, via the antenna coil

• Management of the engine immobiliser system by sending the received

code to either the EMS-ECM (Petrol engine) or the Coded Solenoid

Valve (Fuel Cut-off valve for diesel engines) to authorize the vehicle to

be started

• Control of the immobiliser LED

• Central door locking functions (if fitted)

• Courtesy light control (part of central locking if fitted)

Multi Timer Unit (BMT)

The Multi Timer Unit has the same immobiliser function as the Decoder

Unit above using an ignition key with a transponder and an ignition key

barrel antenna. The Multi Timer Unit has the following functions (amongst

others):

• Decoding the key transponder signal, via the antenna coil

• Management of the engine immobiliser system by sending the received

code to either the EMS-ECM (Petrol engine) or the Coded Solenoid

Valve (Fuel Cut-off valve for diesel engines) to authorize the vehicle to

be started

• Control of the immobiliser LED

• Central door locking functions (if fitted)

• Courtesy light control (part of central locking if fitted)

Type 'I' Key Recognition Optional IR Rolling Code - Petrol/Diesel

This system can be used with or without an Infrared Remote Control,

which would require a separate control unit.

Type 'J' Coded Card instead of Key

This system is an immobiliser only, a separate system must be used to

operate the central locking, however, a Coded Card may contain a remote

control transmitter for gaining entry to the vehicle.