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Control diagram of the injection engine 2112 (1.5i) EURO III: 1 - spark plug of the fourth cylinder; 2 - spark plug of the third cylinder; 3 - spark plug of the second cylinder; 4 - spark plug of the first cylinder; 5 - ignition module; 6 - diagnostic connector; 7 - injector of the first cylinder; 8 - injector of the second cylinder; 9 - injector of the third cylinder; 10 - fourth cylinder injector; 11 - Electronic control unit (ECU); 12 - fuel pump relay; 13 - to the engine radiator fan; 14 - relay for switching on the electric fan of the engine radiator; 15 - main relay of the engine management system; 16 - MAF (mass air flow sensor); 17 - TPS (throttle position sensor); 18 - Coolant Temperature Sensor (coolant temperature sensor); 19 - Rough Road Sensor; 20 - IAC (idle speed control); 21 - purge valve of the adsorber; 22 - DPKV (crankshaft position sensor); 23 - knock sensor; 24, 25 - oxygen concentration sensors; 26 - to the ignition switch; 27 - immobilizer control unit (APS); 28 - immobilizer sensor with alarm; 29 - vehicle speed sensor; 30 - spare connector (for connection to the air conditioner electrical circuit); 31 - to the oil level sensor in the engine crankcase; 32 - to coolant temperature sensor (coolant temperature gauge sensor); 33 - to the engine oil pressure sensor; 34 - to the positive terminal of the battery; 35 - DPRV (camshaft position sensor); 36 - connector for connection to the vehicle's electrical network; 37 - fuel module; 38 - to the fuel level indicator (on the instrument panel); 39 - to the fuel reserve indicator lamp (on the instrument panel); F1 - fuse for ECU and engine management system circuits; F2 - ECU fuse; F3 - fuel pump circuit fuse