3309953 - E7010 CODE - Description

Description

To increase the protection against theft attempts, an electronic immobiliser system known as the ALFA ROMEO CODE system is adopted.The keys are fitted with an electronic Transponder device, which sends a coded signal to a special CODE electronic control unit. If it recognizes the code sent, it allows the engine to be started up.The code used in the communication, which takes place via aerial, changes each time the car is started up (rolling code). The code cannot therefore be reproduced, even with electronic scanners.The main function of the Code control unit is to identify the code in the ignition key. The control unit contains a secret code which is used to communicate with the key Transponder.The control unit contains all enabled key codes in its memory, together with the code used in the communication between Code control unit and engine management unit. When the key is turned to MAR for for the first time, if the key is identified correctly, the code is transferred to the engine management unit and is then indelibly linked to the Code control unit.For further details, see DESCRIPTION AND OPERATION 5580E.The Code control unit supply lines are protected by the same fuses that protect the engine management unit.