Engine control system diagram [The diagram is shown using the example of a car with engine 11183 (1.6i). Engine 2111 (1.5i) has differences in the fuel system.]: 1 - ignition switch (lock); 2 - main relay; 3 - battery; 4 - air filter; 5 - diagnostic connector block; 6 - instrument panel; 7 - tachometer; 8 - Engine management system malfunction indicator lamp; 9 - speedometer; 10 - immobilizer sensor with indicator; 11 - immobilizer control unit; 12 - Electric fan of the engine cooling system; 13 - Electric fan relay; 14 - Electronic control unit (ECU); 15 - coolant temperature sensor; 16 - ignition coil; 17 - spark plug; 18 - camshaft position sensor (phase sensor); 19 - injectors; 20 - throttle assembly; 21 - throttle position sensor; 22 - mass air flow sensor; 23 - idle speed controller; 24 - oxygen concentration sensor; 25 - vehicle speed sensor; 26 - crankshaft position sensor; 27 - knock sensor; 28 - crankshaft pulley; 29 - fuel filter; 30 - fuel pump relay; 31 - fuel tank; 32 - fuel module; 33 - safety (two-way) valve; 34 - gravity valve; 35 - check valve; 36 - purge valve of the adsorber; 37 - adsorber; 38 - separator
(Original source is on the resource: VazBook)