Scheme 1. Engine control system K4M: 1 - injection system relay; 2 - fuse box in the passenger compartment; 3 - fuel pump relay; 4 - Top dead center sensor; 5 - air conditioning control unit; 6, 7, 9, 12, 16 - instrument cluster; 8, 10 - interior electrical equipment control unit; I - diagnostic connector; 13 - speed sensor; 14, 15, 18, 21 - ignition coils; 17 - relay and fuse box in the engine compartment; 19 - coolant temperature sensor; 20, 23 - engine cooling system electric fan relay; 22 - Engine control unit; 24 - air conditioning compressor relay; 25 - knock sensor; 26 - refrigerant pressure sensor; 27 - throttle position sensor; 28 - intake air temperature sensor; 29 - Electric throttle actuator; 30 - Oxygen concentration diagnostic sensor; 31 - intake manifold pressure sensor; 32, 33, 34, 35 - injectors; 36 - purge valve of the adsorber; 37 - oxygen concentration control sensor; 38 - Power steering pressure sensor