The electric motor of the heater fan (“stove”) on VAZ 2108, 2109, 21099 cars and their modifications is a commutator, DC motor with excitation from permanent magnets. Has three rotation speeds. The speed is selected by a four-position switch on the instrument panel. Below are the electrical diagrams for connecting it.

Wiring diagram for the electric motor fan (“stove”) of VAZ 2108, 2109, 21099 cars with a “low” instrument panel and mounting block 17.3722

Wiring diagram for the electric motor fan (“stove”) of VAZ 2108, 2109, 21099 cars with a “high” instrument panel and mounting block 2114

Notes and additions

— The fan electric motor can be connected to the on-board network either directly (highest speed) or through an additional resistor having two resistance spirals (0.23 Ohm and 0.82 Ohm). If both spirals are included in the chain, the speed is low, if one is 0.23, the speed is average.

More articles on electrical equipment of VAZ 2108, 2109, 21099 cars

Schematic electrical diagrams, connecting devices and pinouts of connectors

The VAZ-2109 car was produced at AvtoVAZ from 1987 to 1997. Years of production 21099: 1990-2004 - in Russia, 2004-2011 - in Ukraine. Here are colored wiring diagrams (for the injector and carburetor) with a description of all the elements for various modifications. The information is intended for self-repair of cars. Electrical circuits are divided into several blocks for ease of viewing via a computer or smartphone; there are also circuits in the form of a single picture with a description of the elements - for printing on a printer.

Like the entire car, its electrical equipment was at an average level, so owners of Nines should know the wiring diagram thoroughly for routine repairs with their own hands.

Modifications of VAZ-2109

VAZ-2109 . The basic model, which was produced from 1987 to 1997, was equipped with a 1.3-liter VAZ-2108 carburetor engine with a capacity of 64 horsepower.

VAZ-21091 . Modification of a car with a derated VAZ-21081 engine, 1.1 liter and 54 horsepower. It was mass-produced from 1987 to 1997.

VAZ-21093 . Modification of a car with a VAZ-21083 carburetor engine, 1.5 liters and 73.4 horsepower. Serially produced from 1988 to 2006.

VAZ-21093i . Modification with a VAZ-2111-80 injection engine, 1.5 liters. the first prototype appeared in 1994, mass production began in November 1998.

VAZ 21093-22 . Model made specifically for the Finnish market. It features improved interior trim, pre-installed alloy wheels and a new dashboard. The car was equipped with a 1.5 liter injection engine. Produced from 1995 to 1998.

VAZ-210934 . An all-wheel drive SUV with a VAZ-21093 body mounted on a Niva frame, on which the suspension, steering, engine, gearbox and transfer case from the same VAZ-2121 Niva model were already installed.

Principle of operation

The electrical circuit of the heater consists of:

• electric motor with fan (the fan blows hot air into the cabin, onto the windows and according to adjustments);
• power and speed selection buttons (on the classic VAZ 2101 - 2107, there are only two rotation speeds, on the VAZ 2108 - 2115 there are three speeds, on the VAZ 2110 - 2112 there are three speeds plus a ventilation mode);
• a set of additional resistances to ensure the required rotation speed of the heater fan (step-down, tungsten, turn coils);
• fuse and wiring;

Wiring diagram for VAZ-2109 carburetor

1. Headlight.
2. Electric motor for headlight glass cleaning system. An optional part, used mainly on export vehicles.
3. Limit switch for powering the engine compartment lamp.
4. Klaxon.
5. An electric motor drives a fan installed on the radiator of the cooling system.
6. Temperature indicator that provides a control signal for the electric drive of the fan impeller.
7. Alternator.
8. Fluid supply valve for headlight glasses. Used in conjunction with paragraph 2.
9. Fluid supply valve for the glass of the fifth door.
10. Fluid supply valve to the front glass.
11. Spark plugs.
12. Hall sensor used to distribute ignition pulses.
13. Coil.
14. Limit switch for reverse gear lights.
15. Fluid temperature meter in the cooling system.
16. Starter.
17. Accumulator battery.
18. A sensor that measures the fluid level in the brake booster.
19. Switch that controls the ignition system.
20. Sensor for determining the position of the top dead center of the piston of the first cylinder. Installed on some export VAZ 2109 with a diagnostic system. Found only on cars before 1995.
21. Diagnostic block. Optional element, installed together with item 20.
22. Controller for controlling the solenoid valve installed in the carburetor.
23. Starter switch contact block.
24. Limit switch on the carburetor.
25. Economizer valve.
26. Sensor signaling an emergency decrease in oil pressure.
27. Washer pump drive.
28. Fan impeller motor for ventilation and heating systems.
29. Resistance providing additional fan speeds.
30. Speed ​​shifter.
31. Windshield wiper drive.
32. Cigarette lighter.
33. Illumination system for levers for adjusting heater operating parameters.
34. Socket for additional equipment.
35. Lamp for auxiliary lighting of the engine compartment.
36. Illumination system for the glove box on the instrument panel.
37. Relay and fuse link mounting block.
38. Instrument panel light switch.
39. Parking brake lamp limit switch.
40. Brake lamp limit switch.
41. Steering column switch lever block.
42. Exterior lamp switch.
43. Hazard switch.
44. Turn on the rear fog lamp.
45. Bimetallic fog lamp fuse.
46. Heated glass switch on the fifth door.
47. Turn signal repeaters on the front fenders.
48. Central interior lighting.
49. Individual lampshade.
50. Switches for backlight operation on the middle pillars.
51. Ignition switching unit.
52. Egnition lock.
53. “Low” type instrument cluster.
54. Choke limit switch on the carburetor.
55. Rear lights.
56. Fuel level meter in the tank.
57. Heated glass.
58. Rear wiper drive.
59. Two lamps for room illumination.

The device of the VAZ-21099 stove

There would be no question of any comfort while traveling in a VAZ-21099 car if the interior of this sedan were not equipped with a heating system. Moreover, ensuring a comfortable temperature in the cabin can be considered a secondary task, and the main one is heating the glass (windshield and side front doors) to ensure visibility in conditions of reduced temperatures.

The VAZ-21099 uses a heating system that is classic for all cars, in which the air is heated using an additional radiator of the cooling system installed in the cabin under the dashboard. Thanks to this location, it is possible to provide heating for several zones - airflow onto the windshields and side windows, under the feet and directly into the cabin itself.

To ensure the efficiency of the stove, it is necessary that the flow movement is not spontaneous (due to temperature changes), but forced. And for this purpose, the heating system is additionally equipped with an electric fan.

Equipment diagram for VAZ-2109 injector

The VAZ 2109 wiring for the injector has many connectors for connecting sensors to the computer.

1. TPS (throttle position sensor);
2. DPKV (crankshaft position sensor);
3. DT (temperature sensor);
4. DSA (vehicle speed sensor);
5. Canister purge valve;
6. MAF (mass air flow sensor);
7. DD (knock sensor) and others.

The weak point of the harnesses is the power wiring on the bottom shelf of the radiator, which is constantly exposed to high temperatures and in this place it is in no way protected from water and dirt. Another problem is a harness under the carpet next to the driver's seat. Moisture constantly accumulates there, and in order to remove it, you need to dry the floor, inevitably tugging on the rope.

Since the mid-90s, VAZ 2109 began to use engines with an injection system, which greatly changed the electrical layout of the engine compartment and instrument panel. Below is an electrical diagram of a 1999 car with an ECM type GM ISFI-2S and January 4/4.1.

• 1 - nozzle system;
• 2 - candles;
• 3 — ignition control module;
• 4 — diagnostic connector;
• 5 — General Motors or January controller;
• 6 — connector for connecting the instrument cluster;
• 7 — main relay of the system;
• 8 — fuse for power supply wiring of the controller and ignition system module;
• 9 — protection of the speed sensor and air flow meter circuits;
• 10 — fuel supply pump power protection;
• 11 — fuel pump controller;
• 12 — engine temperature meter;
• 13 — idle system;
• 14 — detonation meter;
• 15 — tank purge system for collecting fuel vapors;
• 16 — crankshaft position meter;
• 17 — speed meter;
• 18 — air flow meter;
• 19 — lambda probe;
• 20 — throttle position angle meter;
• 21 — electric fuel pump complete with fuel level sensor;
• 22 — connection of the ignition system;
• 23 — control lamp;
• 24 — ignition switch;
• 25 - switching block;
• 26 — radiator cooling fan.

Since 2002, all VAZ 2109 began to be equipped only with engines with an injection system. The diagram shows the electrical wiring harness for the Bosch MP7.0 ECM (Euro 2 standards) on a 2003 car with a VAZ 2111 engine.

• 1 — four nozzles;
• 2 — spark plugs 2109;
• 3 — ignition distribution module;
• 4 - diagnostic connector, led into the car interior;
• 5 — Bosch controller connector;
• 6 — connector for the combination of lamps and instruments;
• 7 - main switching device of the system;
• 8 — fuse-link of the main device;
• 9 — controller for controlling the parameters of the fan on the cooling radiator;
• 10 — fan controller fuse;
• 11 — fuel pump control relay;
• 12 — fuel pump wiring fuse;
• 13 — intake air flow sensor;
• 14 — throttle opening angle sensor;
• 15 — engine temperature meter;
• 16 — regulator of idle speed parameters;
• 17 — sensor for measuring detonation in cylinders;
• 18 — crankshaft position sensor;
• 19 — lambda probe;
• 20 — immobilizer control unit;
• 21 — immobilizer status indicator;
• 22 — speed sensor;
• 23 - electric motor for driving the fuel pump; in the same module there is a device for measuring the remaining fuel in the tank;
• 24 — purge valve for the gasoline vapor recovery system;
• 25 — connector of the ignition system braid;
• 26 — instrument cluster with Check Engine indicator and warning lamp;
• 27 — ignition system start relay;
• 28 - lock;
• 29 — installation and switching block;
• 30 - cooling system fan.

Diagnosis of heating system faults

Heating system malfunctions are accompanied by the following symptoms:

• the fan does not work;
• cold air enters the cabin;
• the damper does not work;
• there is a coolant leak;
• the stove begins to make uncharacteristic sounds (whistles, hums, gurgles);
• Steam or smoke appears from the heater ducts.

Why the stove does not work or does not heat the air

If the stove fails, it either does not work at all, or it works but does not heat the air. In the first case, first check the fan wiring, starting with fuse F7. If the fuse is blown, replace it. Then they check the relay, which may not turn on the first time or only when the engine is warm. In this case, the relay is replaced with a new one.

Then the serviceability of the electric motor is assessed. To do this, power is directly supplied to its contacts from the battery. If the electric motor starts to operate at maximum speed, then it is in good condition. Otherwise, it will need to be repaired or replaced.

The intensity of the air flow is adjusted using a resistor having two spirals with resistances of 0.82 Ohm and 0.23 Ohm. In the first mode, the current flows through both spirals, in the second - only through a spiral with a resistance of 0.23 Ohms, in the third - bypassing the spirals, that is, without resistance at all. If the resistor is faulty, the fan will only operate in the third mode at maximum speed (handle in the extreme right position). The problem is solved by replacing the resistor, which is located on the driver's side above the accelerator pedal.

If the resistor is faulty, the heater fan will only be able to operate at maximum speed.

If cold air enters the cabin, this may be due to:

1. Airlock. It could have formed when replacing the coolant, when the system was depressurized, or because there was insufficient amount of coolant in the system. To remove the plug, remove the heater radiator pipe, use a watering can to add antifreeze to the maximum and put the hose back in place. After starting the engine, coolant under pressure will displace the remaining air from the system.
2. Stove tap jammed. This happens if the tap was not initially opened all the way, and during operation, oxide and scale formed on the inner surface, preventing the normal circulation of the liquid. You can try to open the tap using pliers or immediately replace it with a new one.
3. The stove radiator is clogged. When using low-quality coolant, the radiator honeycombs may become clogged. The problem is solved by flushing or replacing the heat exchanger. The feasibility of washing is determined by the scale of contamination.
4. Installation of a low-quality radiator. In a defective product, the honeycomb may be incorrectly soldered. The radiator should be replaced.
5. Low pressure in the cooling system. If heat transfer increases at higher speeds, the pump needs to be replaced.
6. Low coolant level. It is necessary to check the level and add antifreeze if necessary.
7. Damage to the heater fan impeller. The impeller is carefully inspected and replaced if mechanical damage is detected.
8. Cabin filter dirty. If it is heavily polluted, the power of the electric motor will not be enough to pump warm air into the cabin. The filter is replaced with a new one.
9. Damage to the cylinder head gasket. If the cylinder head gasket is blown, white smoke will come out of the exhaust pipe. The problem is solved by replacing the gasket and dismantling the cylinder head.

Relay and fuse box diagram 2109

The fuse blocks do not depend on the fuel injection system used - carburetor or injector. BP will differ only by year of manufacture of the car. That is, the mounting blocks for the carburetor and injector are the same. The VAZ 2109-099 fuse box (carburetor, injector) is located under the hood, in the compartment in front of the windshield on the left side.

Fuse block 2114-3722010-18

K1-relay for turning on headlight cleaners; K2-relay-breaker for direction indicators and hazard warning lights; K3 - windshield wiper relay; K4-relay for monitoring the health of lamps; K5-power window relay; K6 - relay for turning on sound signals; K7-relay for turning on the electric heating of the rear window; K8-relay for high beam headlights; K9-relay for low beam headlights; F1-F16 - fuses.

Fuse block 2114-3722010-60

K1 - Headlight wiper relay, K2 - Turn signal and hazard warning relay, K3 - Windshield wiper relay, K4 - Brake light and parking light relay, K5 - Power window relay, K6 - Horn relay , K7 - Rear window heating relay, K8 - Headlight high beam relay, K9 - Headlight low beam relay, F1 - F16 - Fuses, F1 - F20 - Spare fuses.

Attention! The power terminals on the generator often become loose, heat up, spark and melt the wiring. Pay attention to this point when searching for possible faults yourself.

Electrical diagram - wiring of a VAZ 2109 car with a carburetor engine and a low instrument panel (torpedo).

A - the order of conditional numbering of plugs in the ignition switch block of VAZ 2109 electrical equipment. B - the order of conditional numbering of the plugs in the block of the electric motor of the windshield wiper of the VAZ 2109.

Picture of the VAZ 2109 electrical circuit:

Table of decoding of the VAZ 2109 electrical circuit:

Features of operation and repair of the VAZ 2109 stove

Many owners of a domestic car of this brand know that the VAZ 2109’s heater does not heat well. As a result, the interior warms up poorly, and driving in such a car is not comfortable. In such cases, the stove is modified. Most often this is done within the framework of VAZ 2109 tuning with your own hands. Video and photo instructions for do-it-yourself tuning work can be found on the Internet. But sometimes it is enough to remove the VAZ 2109 stove and take it for repairs.

The operating procedure is described below.

1. Loosen the clamps and disconnect the two hoses from the tap pipes under the instrument panel from inside the cabin.
2. Loosen the clamps and disconnect the hoses in the engine compartment from the tap pipes.
3. Unscrew the nuts securing the stove faucet.
4. Remove the valve from the front panel.
5. Remove the crane rod holder.
6. Disconnect the rod from the crane lever.
7. Remove the cover protecting the gear shift lever from the floor tunnel lining.
8. Remove the floor covering.
9. Unscrew the fastening screw at the rear of the floor covering tunnel.
10. We remove the floor tunnel lining with a shift back.
11. We remove the internal ventilation duct and disconnect it from the stove body.
12. Disconnect the wires from the heater motor.
13. Disconnect the wires from the resistor.
14. Unscrew the mounting nuts on the right side of the heater.
15. Unscrew the fastening nuts and remove the heater along with the control panel.