10.3.4.7. Electric equipment

Fig. 10-28. Scheme of electric connections of system of injection: 1 — the engine cooling system fan electric motor: 2 — the assembly block; 3 — the idling regulator; 4 — an electronic control unit; 5 — an octane potentiometer; 6 — spark plugs; 7 — the ignition module; 8 — the sensor of provision of a bent shaft; 9 — an electrogasoline pump with the fuel level sensor; 10 — a tachometer; 11 — a control lamp of "CHECK ENGINE"; 12 — the car ignition relay; 13 — the speed sensor; 14 — diagnostics block; 15 — a nozzle; 16 — the adsorber purge valve; 17, 18, 19 — safety locks of system of injection; 20 — the relay of ignition of system of injection; 21 — the relay of inclusion of an electrogasoline pump; 22 — the relay of an electric heater of an inlet pipe; 23 — an electric heater of an inlet pipe; 24 — a safety lock of a heater of an inlet pipe; 25 — the sensor of concentration of oxygen; 26 — the sensor of temperature of cooling liquid; 27 — the sensor of provision of a butterfly valve; 28 — the air temperature sensor; 29 — the sensor of absolute pressure; And — to the plus plug of the rechargeable battery; In — to the ignition switch 15 plug; P4 — the relay of turning on of the electric motor of the fan

The scheme of electric equipment (fig. 10-28) differs in introduction of a plait of system of injection by which wires the electronic control unit is connected to sensors and executive devices of system of injection. Three wires from a plait of system of injection through a separate block are connected to a low-voltage entrance of a tachometer to combinations of devices, to a separate board of "CHECK ENGINE" and to the ignition switch plug "15".
The electric motor of 1 fan of the cooling system of the engine turns on the electronic block 4 managements of system of injection by means of the P4 relay in the assembly block. Therefore in a radiator there is no sensor of turning on of the electric motor of the fan.
In a plait of wires of system of injection there are four safety locks. All of them together with the relay are united in one knot established under a ware box. The safety lock 24 bigger sizes is calculated on current 50 A. It protects a chain of a heater of an inlet pipe. Other three safety locks are calculated on current 15 A.
Purpose of these safety locks is specified in table 10-4. In this table numbers of safety locks according to fig. 10-28 and colors of blocks of safety locks are specified.

Purpose of safety locks of system of injection Table 10-4
Safety lock
The protected chains
17 (green)
Electronic control unit. Ignition module.
18 (black)
Sensor of concentration of oxygen. Speed sensor. Adsorber valve. Relay (winding) of inclusion of a heater of an inlet pipe.
18 (red)
Relay of inclusion of an electrogasoline pump (contacts). Electrogasoline pump. Nozzle.

Except fuses still "the fusible insert" on the end of the red wire attached to the rechargeable battery is provided. This "a fusible insert" is executed in the form of a piece of a black wire with a section of 1 mm2 while the main red wire has the section of 6 mm2.