We check and repair the BA3 2109 stove

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.

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.

If the cooling fan does not work

To drive the fan, a DC electric motor with excitation from permanent magnets ME-272 or similar is installed. Technical data of the electric fan and fan switch sensor:

• Rated rotation speed of the electric motor shaft with impeller, 2500 – 2800 rpm.
• Electric motor current consumption, 14 A
• Sensor contact closure temperature, 82±2 degrees.
• Sensor contact opening temperature, 87±2 degrees.

Useful: Connection diagram for DRL (DRL) via a contact relay in a car

The cooling system fan may not turn on due to:

• electric drive malfunctions;
• blown fuse;
• faulty thermostat;
• a failed thermal sensor for turning on the cooler;
• faulty VO relay;
• broken electrical wiring;
• faulty expansion tank plug.

To check the VAZ fan electric motor itself, we apply 12 V voltage from the battery to its terminals - a working motor will work. If the problem is with the fan, you can try to repair it. The problem is usually the brushes or bearings. But it happens that the electric motor fails due to a short circuit or break in the windings. In such cases, it is better to replace the entire drive.

The BO fuse is located in the mounting block of the car's engine compartment and is designated F7 (20 A). The test is carried out using a car tester turned on in probe mode.

1. In a car with a carburetor engine, you need to check the sensor - turn on the ignition and short-circuit the two wires going to the sensor. The fan should turn on. If this does not happen, the problem is definitely not with the sensor.
2. For injection cars, it is necessary to warm up the engine to operating temperature and disconnect the sensor connector, disconnecting it from the vehicle’s on-board network. In this case, the controller must start the fan in emergency mode. The electronic unit perceives this as a failure in the cooling system and forces the fan drive to operate in constant mode. If the drive starts, the sensor is faulty.

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.

Internal structure and principle of operation

The heating system installed on the VAZ-2109 has its own differences and features compared to other cars in the AvtoVAZ line.

The heater consists of a pair of plastic casings (on the right and on the left), which are connected to each other along the entire perimeter with clamping brackets. A special flagellum is placed in the grooves of the casings to seal it well. The fan supplies air flow to the interior of the machine. The VAZ-2109 stove is designed so that the fan can be easily removed independently from the engine compartment.

An electric motor of type 45.37230 is attached to the casing, and a fan is located on its shaft. To obtain its desired rotation speed, additional resistance was provided. It was attached to the left side of the hole in the heater casing using a screw.

Heating system radiator

A radiator is built into the stove body to heat the air flows, which then blow into the cabin. Using three screws, this element of the system is screwed to the right casing and sealed with a polyurethane foam gasket.

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:

Automated control system

In the diagram we still see an additional resistor, only now all commands are transmitted to the electric fan not directly from the speed shift knob, but through the heating system control unit (No. 3). The unit also controls the interior recirculation solenoid valve and the damper drive micromotor. This scheme uses only one temperature sensor in the cabin, but in more advanced versions there are also intake air temperature sensors, as well as sensors that measure the temperature of the air supplied to the cabin at several points.