Fig. 9.1. Control system of the Fenix 5.1 engine: 2/14 — the system relay of the engine; 3/1 — the ignition switch; 4/1 — the block of system management of the Fenix 5.1 engine; 6/13 — the fuel pump; 7/15 — the heated sensor of oxygen (HO2S); 7/21 — the RPM meter (RPM) of the petrol engine; 7/22 — the sensor of absolute pressure in a collector (MAR sensor); 7/23 — the sensor of temperature of cooling liquid of the engine (EST); 7/24 — the sensor of temperature of entrance air; 7/25 — the sensor of provision of a butterfly valve; 7/26 — the sensor of a detonation (KS); 7/27 — the sensor of position of the camshaft; 8/2 — the regulator of idling (IAC); 8/6, 8/7, 8/8, 8/9 — nozzles; 8/12 — the valve of a purge of the coal filter (SR); 10/51 — a precautionary lamp of temperature of exhaust gases; 11/2 — the block of safety locks in passenger salon; 24/20 — the 22-contact socket of a plait of passenger salon (C), a plait of a compartment of the engine (A) (gray); 24/23 — the 22-contact socket of a plait of passenger salon; 24/27 — the 12-contact socket of a plait of a compartment of the engine (A) — a plait of the module of engine management (ESM); 24/33 — the 4-contact socket of a plait of the module of engine management (unified social tax) (B) (Q); 31/25 — a ground contact under the dashboard

The temperature sensor 7/23 (fig. 9.1) consists of the thermoresistor with negative temperature coefficient. BU gives a signal of 5 V on one of conclusions, at the same time other conclusion is connected to "weight". Owing to change of resistance of the sensor in process of change of temperature of the engine also the signal on BU respectively changes. Signal level high on the cold engine and low on heated-up.

The sensor of a detonation located on the block of cylinders 7/26 transmits signals to BU at identification of a detonation in any cylinder.

At a detonation in the block of cylinders there is a vibration of a certain type. Arising thereof mechanical loadings influence a piezoelectric crystal of the sensor therefore tension is generated. Together with signals from sensors of position of the camshaft and frequency of rotation and the provision of a bent shaft this signal is given on BU which on the basis of these data defines, in what cylinder there is a detonation.