Immobilizer Control System: General

Up to 3 ignition keys with transponder integrated in the key head
The antenna (toroidal coil) for energizing and communicate with the transponder with its integrated electronic modulator/demodulator driver
The BCM control unit (Body Control Module), in which Immobilizer function is managed
The ECM control unit (Engine Control Management)
The serial data link between BCM and ECM control unit
The data link and supply link between BCM control unit and antenna