On cars the electronic combination of devices is established. It includes a speedometer, the counter of the general and daily run of the car (odometer) with the liquid crystal indicator, a tachometer, the index of level of fuel, the index of temperature of cooling liquid, the indicator of time and temperature of air, 12 control lamps and 6 lighting lamps of a scale.

Indications of the daily counter of a run of the car can be set to zero the button located to the right of the indicator. At switching off of ignition of the indication of the daily counter do not change, but at a detachment of the rechargeable battery of its indication are dumped. Indications of the counter of the general run remain at shutdown of the rechargeable battery.

The electronic module to which signals from sensors come operates operation of devices. Mechanisms of indexes of temperature and level of fuel — magnetoelectric type. Shooters of a tachometer and a speedometer are given by step electric motors.

The control lamp of a reserve of fuel joins the electronic module at resistance of 252 ±2 Ohms on the fuel level sensor that there correspond 1/8 fuel tanks or to the rest of fuel of 5,38 l.

Fig. 7.1. Scheme of electric equipment of the VAZ-2115-20 cars (left half): 1 – block headlights; 2 – fog lights; 3 – air temperature sensor; 4 – engine cooling system fan electric motor; 5 – the blocks connected to a plait of wires of system of ignition; 6 – switch of a podkapotny lamp; 7 – a block for connection to a sound signal of single-wire type; 8 – sound signal; 9 – the sensor of level of the washing liquid; 10 – sensors of wear of blocks of forward brakes; 11 – oil level sensor; 12 – generator; 13 – podkapotny lamp; 14 – sensor of the index of temperature of cooling liquid; 15 – starter; 16 – rechargeable battery; 17 – relay of inclusion of fog lights; 18 – sensor of level of cooling liquid; 19 – sensor of level of brake fluid; 20 – backing light switch; 21 – motor-reducer of screenwash; 22 – sensor of a control lamp of pressure of oil; 23 – a block for connection to the electric motor of a washer of back glass; 24 – windshield washer electric motor; 25 – combination of devices; 26 – assembly block. Conditional numbering of plugs in blocks: And — blocks of block headlights; In — an electrogasoline pump block; With — blocks of the assembly block, the switch of ignition, a motor-reducer of screenwash; D — a plafond of illumination of salon

Addresses of output plugs of a combination of devices are given in tab. 7.7. The order of conditional numbering of plugs in blocks of a combination of devices is specified fig. 7.1.

The electronic combination of devices is not subject to repair, except for replacement of control lamps and lighting lamps of devices. The making knots of a combination of devices in spare parts are not delivered.

Number of the plug	Address (appointment) of the plug
Block of white color (X1)
1	Case ("weight")
2	Low-voltage entrance of a tachometer
3	High-voltage entrance of a tachometer
4	To a safety lock of F3 of the assembly block ("+ "rechargeable battery)
5	To the sensor of temperature of cooling liquid
6	To a safety lock of F10 of the assembly block
7	-
8	To the engine management controller
9	To the engine management controller
10	To F16 safety lock (to the ignition switch 15 plug)
11	To the switch of the parking brake
12
13	To the sensor of a control lamp of pressure of oil
Block of red color (X2)
1	To the air temperature sensor
2	To F16 safety lock (to the ignition switch 15 plug)
3	Case (weight)
4	To the regulator of lighting of devices
5	To the switch of indexes of turn (the right board)
6	To the switch of indexes of turn (the left board)
7	To the sensor of level of brake fluid
8	To the on-board computer
9	To the speed sensor
10	To the sensor of the index of level of fuel
11	To a safety lock of F14 of the assembly block
12	To the switch of the alarm system it (is not used)
13	To the ignition switch 50 plug