Description of com-

DESCRIPTION OF COM-

The system comprises the following components

Keys

The following are supplied

• An electronic key A: “MASTER” key
• Two main electronic keys B (with Alfa Romeo badge)

The keys contain an electronic circuit called Transponder, which contains the code which characterises them; this is transmitted to the Electronic key control unit (C.C.E.) when the key is turned to the MARCIA position. Each electronic key possesses its own code, which must be memorised by the system’s electronic control unit.

The cars are produced with the codes of the keys supplied with them already memorised, as described below:

• The C.C.E. contains the codes of the two main keys and the MASTER CODE (code of the master key)
• The C.C.M. only contains the MASTER CODE

It is very important to keep the MASTER key most carefully, since its code is memorised, through a special specific procedure (described later), in the electronic injection control unit, therefore the two control units are linked indissolubly. If the MASTER key goes astray or is damaged, further memorising procedures of new keys will not be possible; without the MASTER key in the event of a failure to the C.C.E. it will be necessary to change the C.C.E. and the C.C.M.

The user is advised to keep the MASTER key in a safe place outside the car. In fact, it serves as an “access key” for memorising further codes (keys). The MASTER key should only be used when needing to memorise new keys.

The Transponder inside the key comprises a minute integrated circuit (which contains the code), and a coil (which supplies the integrated circuit and transmits the code).

In the main keys, the Transponder is inserted in an accessible manner, while the MASTER key has the possibility to transfer the component to another MASTER key, if the need arises (for example if the ignition lock needs replacing).

The MASTER key is proof of the ownership of the car: it must therefore be presented (together with the Code Card), when the car is sold.

Aerial

The aerial is a loop coil which is wound round the ignition lock and is connected to the C.C.E. by a specific connector (see figure). The purpose of the aerial is firstly to supply the transponder so that it can send the code and secondly to receive the Transponder signal.

1. Transponder
2. Aerial
3. Ignition lock