To increase the protection against theft attempts, an electronic
immobiliser system known as the LANCIA CODE system is adopted.The keys are equipped with an electronic
transponder which transmits a coded signal to a special electronic
control unit in the Body Computer. This allows the engine to be
started if the code is recognised.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 body computer contains all enabled key codes in its memory,
together with the code used in the communication between the body
computer and the 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 body computer.The two units communicate via a two-way
serial line.The function also allows status to be displayed
via the activation of the CODE warning light in the instrument panel
and connected via the CAN network.
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Characteristic of working principle 5580E anti-theft device
.