Engine start blocking circuit (immobilizer): 1 - mounting block of relays and fuses in the engine compartment; 2 - mounting block fuses in the cabin; 3 - immobilizer status signaling device; 4 - transponder in the ignition key; 5 - communication coil on the ignition switch; 6 - immobilizer control unit; 7 - diagnostic connector; 8 - ECU MR-140 or HV-240; 9 - ECU Sirius D4; 10 - control unit of the automobile anti-theft system
* with ECU MR-140
** with ECU HV-240