Wiring – VAZ 2109 – injector: features of control sensors and ECU unit

If the electrical signal is supplied in a distorted form, then the malfunction will be felt throughout the entire VAZ injector system. Unlike the carburetor circuit, where the pedal directly controls the damper, in injection engines the pedal is not connected to the actuator; IAC idle speed regulator. In the places where the housing is connected to the radiator, bitoplast should be glued. Adjustment must be carried out by selecting the positions of the braid. Connectors may become unusable, wiring may break, contacts may oxidize. how to connect a car signal If the foam has come loose, carefully glue it back, you can add strips of bitoplast. The information is intended for self-repair of cars.

One of the most important parameters, without which the car will not even start. Optional element, installed together with item.

An optional part, used mainly on export vehicles.

Limit switch for reverse gear lights.

VAZ 2109 wiring repair

Full scheme

The order of conditional numbering of plugs in blocks:

a – mounting block, instrument cluster, ignition switch and windshield wiper (for blocks with a different number of plugs, the numbering order is similar); b – ignition distributor sensor; c – switch and carburetor solenoid valve control unit; d – headlight units, headlight and rear window cleaners; g – interior lighting lamp; e – fuel level sensor; d – rear lights (pin numbering in order from top to bottom)

* Installed on parts of manufactured cars. ** Not installed since 1995.

How to remove the instrument cluster

We unscrew a couple of screws securing the instrument cluster and remove it. Pull it slightly towards you, unscrew the fastening nut, and remove the speedometer cable.

Appearance of the removed plastic element

• Now you can disconnect the block with the power wires and put it aside;
• we act in exactly the same way in relation to the ignition switch, and also discard the “mass” wire from the ignition relay;
• on each side we unscrew the pair of lower screws that secure the console;
• you can disconnect the wires that supply the glove box lighting;
• unscrew the screws that hold the heater panel, after which it can be moved downward so that it does not create interference;
• unscrew the screws of the heater rod in the cabin;
• All that remains is to unscrew the last screws of the panel - the central one and the upper side ones. The panel is completely in our hands.

Electrical diagram of VAZ-2108, VAZ-2109, VAZ-21099

Electrical diagram of VAZ-2108, VAZ-2109, VAZ-21099 cars. Low instrument panel.

1 – block headlight; 2 – electric motor for headlight cleaner (installed on parts of manufactured cars); 3 – engine compartment lamp switch; 4 – sound signal; 5 – electric motor of the engine cooling system fan; 6 – fan motor activation sensor; 7 – generator; 8 – solenoid valve for turning on the headlight washers (installed on parts of manufactured cars); 9 – solenoid valve for turning on the rear window washer (installed on parts of manufactured cars); 10 – solenoid valve for turning on the windshield washer; 11 – spark plugs; 12 – ignition distributor sensor; 13 – ignition coil; 14 – reverse light switch; 15 – coolant temperature indicator sensor; 16 – starter; 17 – battery; 18 – brake fluid level sensor; 19 – switch; 20 – top dead center sensor of the 1st cylinder; 21 – diagnostic block; 22 – carburetor solenoid valve control unit; 23 – starter activation relay; 24 – carburetor limit switch; 25 – carburetor solenoid valve; 26 – sensor for emergency oil pressure warning lamp; 27 – windshield washer motor; 28 – heater fan electric motor; 29 – additional resistor of the heater electric motor; 30 – heater fan switch; 31 – electric motor for windshield wiper; 32 – cigarette lighter; 33 – backlight lamp for heater levers; 34 – plug socket for a portable lamp; 35 – engine compartment lamp; 36 – glove box lighting lamp; 37 – mounting block; 38 – instrument lighting switch; 39 – parking brake warning lamp switch; 40 – brake light switch; 41 – steering column switch; 42 – external lighting switch; 43 – alarm switch; 44 – rear fog light switch; 45 – fog light circuit fuse; 46 – rear window heating switch; 47 – side direction indicators; 48 – lampshade; 49 – connector for connecting to the individual lighting lamp; 50 – lamp switches on the door pillars; 51 – ignition relay; 52 – ignition switch; 53 – instrument cluster; 54 – switch for the carburetor air damper warning lamp; 55 – rear lights; 56 – sensor for level indicator and fuel reserve; 57 – rear window heating element; 58 – electric motor for rear window wiper; 59 – license plate lights;

A – the order of conditional numbering of plugs in the ignition switch block; B – the order of conditional numbering of the plugs in the windshield wiper motor block.

Removing the low panel

Any liquid remaining in the radiator should be removed using a hose and funnel. In the places where the housing is connected to the radiator, bitoplast should be glued. You can dismantle the entire torpedo completely.

However, this is not at all surprising, because models with distributed fuel injection have numerous electronic devices built into them, which, unfortunately, can fail. A typical sign of a discharged battery or poor contact of the power wires with the battery terminals. Electronic ignition The VAZ electrical circuit can be supplemented with a contactless switch; it is installed between the ignition coil and the distributor.

This charge is transferred through the wires to the switchgear, while the device continues to function. Fluid supply valve for the glass of the fifth door.

You will have to arm yourself with a socket wrench that fits the fastening nuts: push them inward, they can be removed later; you need to unscrew the air deflectors responsible for heating the side windows, located on the left and right sides; take a Phillips screwdriver and unscrew the screws securing the top cover to the surface; you can remove the external lighting regulator from the panel - for this purpose, pry it off with a flat object, for example, a screwdriver, and pull it out as long as the wiring allows; disconnect the power harness from the switch; we remove the radio with our own hands and take out the standard socket for radio equipment, if available; unscrew the central screw that secures the panel trim; That's it, you can remove the cover itself.

Next, you need to balance the fan impeller by winding wire around the blades. A car produced from year to year in Belgium by Scaldia-Volga. Spark plugs. VAZ 2108 -09 -099 transition from carburetor to injector. part 2

Electrical diagrams of VAZ 2109

So, in order to understand which VAZ 2109 electrical circuit you need, let’s go through each of the factors listed above in detail: 1) Do you know whether your VAZ 2109 has a high or low panel? If you don’t know, look at the pictures:

VAZ 2109 high panel

VAZ 2109 low panel

You can tell whether a panel is high or low by the instrument cluster on the control panel, as well as by the appearance of the car panel itself. 2) If the VAZ 2109 is fuel-injected, then in 99% of cases a high panel is installed on it and you need a wiring diagram for the high panel.

3) If your VAZ 2109 is an export version, then the wiring diagram will be exactly the same as that of the base version, with the exception of options. The options may be different and, as a rule, finding a scheme exactly for your option will be problematic. That is, the basic diagram: instrument panel, ignition, recharging, etc. are the same, only additional options will not be indicated.

4) Remember, the ECM wiring diagram is completely separate from the general electrical circuit. That is, if you download the VAZ 2109 wiring diagram on the Internet, then it will not contain either a controller or sensors. ECM wiring diagram is a separate technical document; You also need to search and download it separately.

Below are links to download electrical diagrams for low and high panels of the VAZ 2109:

Each archive contains two electrical circuits; their differences are that on one the VAZ 2109 mounting block is drawn as one solid block, on the other the wiring inside the mounting block is drawn. Naturally, the version of the diagram with the wiring of the mounting block is more complete and convenient for working with the wiring of the VAZ 2109 car.

I also found a good program for owners of old VAZ 2108, VAZ 2109. This program makes the electrical circuit of the VAZ 2108, VAZ 2109 interactive. That is, the user has the opportunity to select the circuit element he is interested in on the right in the window and part of the wiring for working with this node will blink:

When working with VAZ 2109 wiring, always remember that color coding of wires is your main assistant. The color marking of the wires of VAZ 2108, VAZ 2109 on the diagram and on the car itself must match. You took out the cable of wires and you can immediately find your bearings - yellow - dimensions, red - brake light, blue - reverse, orange-black - fog lights.

Types of electrical circuits

There are several options for circuits for monitoring the condition of electrical equipment of the VAZ-2109:

1. With a "high panel". This scheme is considered as the most interactive and relevant. It provides an additional circuit that is intended for an automotive mounting block.
2. With a "low panel". This circuit is used to identify a malfunction in the automotive mounting block.
3. With Europanel. This version of the diagrams provides complete information for both the internal diagram and the mounting block. It also includes a diagram that helps to connect a Europanel, that is, electrical devices and appliances created according to the “Euro” type.

VAZ 2109 wiring diagram

The VAZ 2109 car has remained one of the most popular in the country for many years. Not just popular, but also prestigious. In the social hierarchy, owners of nines were not much lower than owners of used Cadets and Jettas. One could argue with the reliability of the car, but since there was no alternative, the car filled the entire CIS and was even assembled using the hub method in Finland, but this has little to do with the 2109 model.

This is interesting: Cars with Euro license plates are a tasty morsel for car thieves

Content:

Wiring diagram VAZ 2109

Like the entire car, the electrical equipment was not at the highest level, so owners of nines should know the VAZ 2109 wiring diagram thoroughly. To do this, we have provided the factory diagram in good resolution, which can be used with adjustments for changes made from time to time.

This is a diagram of the canonical nine with factory markings and explanations. In principle, the circuit is quite simple, but the electrical appliances themselves caused difficulties, the problems with which we will talk.

Basic problems with electrical wiring 2109

The biggest problem with the electrical equipment of the VAZ 2109 was the low quality of components and unsatisfactory build quality. Despite the fact that Togliatti traditionally blames suppliers for all mortal sins, in the end we have to take the rap, and as ordinary users, we should not be interested at all in why the spirals on the double-filament rear light bulbs constantly burn out. Also, in principle, we don’t care which factory made the housing for the fuse box - we only see the inadequate operation of the electrical equipment when pressing the brake pedal turns on the right turn.

And a lot of such examples can be given. If the factory is not confident in the quality of the components, then why install them on the car. Therefore, rhetorical questions only lead to unnecessary vibrations in the air, and do not solve the problem. The above problem with feet can be solved quite simply:

• the rear light cover is removed;
• the power terminals are disconnected from the trunk;
• the entire strip on which the lamps are mounted is unscrewed;
• The contact on the flexible board at the point of attachment to the lamp socket is checked.

Short circuits of the tracks of this board occur due to contamination of the contacts and tracks. Then the signal sent to the stop lamp can simply be redirected to the turn signal lamp. This can be radically solved by replacing the entire board with a new one, but the new strip will not last as long as we would like due to poor sealing of the lamp from inside the luggage compartment. It seems like a trifle, but we spend precious time solving trivial problems that are solved at the production level with the right approach, not the VAZ approach.

Improvements and correction of factory errors

In light of the above, a breakdown of the electronics control unit is very typical for the nine. The reason is very simple - its body simply allows water, dust and moisture in the form of condensation to pass through. Its very placement on the air supply shelf is not entirely clear, but there are also more significant disadvantages that can be eliminated with your own hands. The factory provided a tiny groove to drain water from the housing, but it constantly gets clogged, the housing fills with water, and the control unit slowly and surely dies. It is not cheap, so such negligence of the designers cannot be explained. There are two ways out of the situation - constantly clean the water drainage channel, or change the block at least once a year.

It is also worth paying attention to the fact that the power wiring on the bottom shelf of the radiator is constantly exposed to high temperatures. In addition, in this place it is in no way protected from water and dirt. This is also a difficult moment to explain. The category of wiring harness oversights includes the 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. Of course, this problem cannot be solved on your own - the amount of work required to re-tighten all the wiring in the car is too large.

It is worth paying special attention to the power terminals on the generator. They very often become loose, heat up, spark and melt the wiring. But that's not the worst thing. The wires may short out, and it already smells burnt. Therefore, you should not be lazy, but check this unit as often as possible for tightness of the terminals.

Wire harness insulation 2109

No one will disassemble half a car for the sake of insulating the harnesses, but if necessary, you need to do this for your own safety. Using the diagram that we placed at the beginning of the article, all the work will not take much time, but you will be confident in the quality of the wiring insulation. For this you will need:

1. Corrugated hose for electrical wires.
2. Insulating tape.
3. Wire cleaner.

Before wrapping old wiring in a sleeve, treat the wires with a cleaner, which is widely available in aerosol cans. Next, following the instructions and checking the electrical diagram, we proceed as follows:

1. Disconnecting the battery
2. Disconnect the terminals and remove the harness.
3. We treat it with an aerosol.
4. We carry out a visual check of the contacts.
5. We lay the tourniquet in the corrugation.
6. We fix and seal the entry points of the harness into the corrugation.
7. We put the finished cable in place.
8. Referring to the diagram, connect the terminals.

Particular attention should be paid to sealing the harnesses in places where they come into direct contact with water or hot surfaces. Also, when assembling, pay attention to the integrity of the pads and the condition of the contacts and terminals.

Thus, having spent very little time, we will save the wiring and get rid of unnecessary problems with short circuits. Keep an eye on the wiring, and good luck on the road!

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.

Wiring - VAZ 2109: interior and engine compartment modifications

Perhaps, without exaggeration, we can say that the most popular AvtoVAZ model is the family of front-wheel drive cars. And many owners strive to change the VAZ 2109 on their own, introducing various improvements that affect the standard wiring.

But are they all justified? This will be discussed in this article.

Front-wheel drive VAZ 2109 is a leader in the number of successful tuning experiments

Today you can find several modifications of the car, in which the wiring diagram for the VAZ 2109 has significant differences.

In particular, the car is equipped with:

1. Carburetor power unit;
2. Injection power unit.

Generalized wiring diagram for a VAZ 2109 with a carburetor type

In addition to the desire to change or improve something, owners of early models of this car are faced with the need to replace the engine due to the exhaustion of its service life.

Additional tips from the professionals

By taking into account some tips and tricks provided by professionals, you can independently extend the life of your car wiring:

• car owners must periodically inspect the external condition of the insulation and all connectors by looking under the hood of their car;
• If a minor defect is discovered during inspection, the damaged wire must be replaced to prevent a short circuit. If the break is insignificant, then you can wrap it with high-quality electrical tape for a while, but it is not recommended to postpone replacement for a long time;
• A special product, WD-40, which can be purchased at an affordable price in a specialized store, will help remove the oxidizing layer from the surface of the connector;
• It is advisable to make additional protection for the engine crankcase to prevent moisture from getting on the wires.

It is imperative to wipe off excess oil from the insulation to extend its service life. Experts strongly recommend replacing old or damaged wiring rather than repairing it, in order to avoid more serious breakdowns in the future, which will cost car owners several times more.

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.

What can be changed in the electrical circuit

Let's figure out what exactly car owners undergo alterations.

Moreover, we will indicate only those alterations that are not prohibited by the manufacturer and current regulations:

1. Installation of a new instrument panel;
2. Alteration of internal (interior) lighting;
3. Installation of additional turn signal indicators in the rear view mirrors;
4. Installation of additional headlights (fog lights);
5. Installation of an acoustic and multimedia system;
6. Immobilizer installation.

Wiring diagram for VAZ 2109i with a high panel

For reference: the visual differences between the standard panel and the “high” one are that the radio compartment is moved to the level of the dashboard. Accordingly, the wiring on the VAZ 2109 under the instrument panel must be replaced.

Interior modifications

Many owners come to mind with the desire to improve the lighting in the car interior.

Let us remind you that inside a passenger vehicle there are several places equipped with lighting sources:

1. The salon itself (interior lighting);
2. Glovebox;
3. Cigarette lighter;
4. Instrument panel (instrument cluster lamp and symbol lamp)

Layout of incandescent lamps for a VAZ 2109 car

If you, as the owner, like a high panel in the cabin, then you cannot do without replacing the standard wiring. Because the:

1. Control devices have a different location on the panel;
2. The standard length of wires is not enough;
3. Terminal blocks may also differ.

Electrical wiring for a VAZ 2109 in the process of connecting to devices

Accordingly, without replacing the electrical wires it will not be possible to use:

1. instrumentation;
2. on/off buttons for various devices.

Differences in the terminal blocks of the “low” and “high” instrument panel

As for making changes to the instrument panel lighting, today there are sets of special lamps on sale along with the wiring with which they are connected to the car’s electrical network.

Tuned instrument panel lighting for VAZ 2109

You can install such kits yourself; it is only important to adhere to accuracy and safety rules.

Advice: carry out all electrical wiring replacements and connecting instrumentation only with the battery disconnected.

Useful tips

The VAZ 2109 wiring diagram is necessary without any intention of making changes to the car’s structure, because during operation the wiring is subject to:

1. Temperature effects - both climate changes and daily heating and cooling cycles;
2. Mechanical loads - wiring runs throughout the entire car body, exposed to components and mechanisms, passengers and transported goods

Accordingly, the owner is required to perform a preventive inspection of the standard wiring in order to identify insulation violations and mechanical damage. Timely detection of a malfunction will allow you to quickly correct and prevent more significant failures in the operation of the vehicle’s electronic devices.

Conclusions: we hope that the issues covered in this article will protect you from thoughtless intervention in the electrical circuit of your car. And if you need to replace the standard wiring, you will do it in accordance with the manufacturer’s recommendations.

Engine compartment modifications

In addition to replacing the power unit after it has exhausted its life, there are many components in the engine compartment whose wiring also needs to be replaced:

1. high-voltage wires from the ignition unit;
2. wiring of various control sensors;
3. battery power cables (connections are most susceptible to corrosion).

If there is no spark, repair of the electrical wiring of the VAZ 2109 is inevitable.

Numerous sensors in the engine compartment require special monitoring:

1. Coolant temperature sensor - if the electrical wiring is faulty, the driver will not notice overheating of the power unit;
2. Brake fluid level sensor in the expansion tank - a leak or low level can lead to brake system failure;
3. ABC system sensors - oxidation of contacts or disruption of wiring integrity can lead to system failure;
4. Exhaust gas sensor - based on its readings, the electronic unit “prepares” the fuel-air mixture. If the sensor does not work, gasoline consumption will increase.

The only wireless car security alarm element

A useful addition to the functionality of the car is the acquisition of a modern anti-theft system.

Installing a modern alarm system is a special topic, since its work affects several main components and systems of a VAZ family car:

1. General electrical system;
2. Supply system;
3. Sound and light circuit and actuators (side lights, headlights, sound signals);
4. Standard immobilizer.

To install an alarm system, a VAZ 2109 wiring diagram is required

Advice: often manufacturers of alarm systems accompany the installation process with video and photo materials for each specific model of a particular family of cars. Before starting installation, you should read them carefully.

General alterations

Installing additional fog lights is a general modification because:

1. Affects equipment in the engine compartment;
2. Interferes with the instrument panel inside the cabin;
3. Connects to the vehicle's standard power supply system;
4. Attached to the power body.

The kit must contain connection instructions

To install and connect fog lights, you will need a wiring diagram for the VAZ 2109, because the package includes:

1. Connecting wires;
2. Terminal blocks;
3. Switching relay;
4. Actuators (buttons);
5. A backlight lamp (or LED) indicating the status of lighting fixtures.

How the signal is transmitted

From the electronic unit, a signal is transmitted through special wires, which are painted in different colors, to the system that controls the functionality of the engine.

Thanks to the different color markings of the wires, the driver can understand the electrical circuit and find exactly the wire that is needed to solve a particular problem. To ensure high-quality and uninterrupted transmission of the electrical signal, you must do the following:

• use wires with a suitable cross-section;
• monitor the contact resistance, which should be minimal for removable connections;
• monitor the integrity of the insulation of electrical conductors.

The operation of the VAZ-2109 injector engine, as well as its dynamic characteristics, is primarily affected by the condition of the electrical wiring, therefore, it must be constantly and carefully monitored.

Having familiarized yourself with the intelligent color wiring diagram, even without the presence of a special measuring device, you can quite easily independently find a fault in the electrical wiring, even the most insignificant one. Eg:

• find out why the ignition stopped working;
• determine why the starter does not turn on;
• due to which the generator lacks voltage;
• which led to a breakdown of the heating system.

If the cross-section of the conductor decreases, this will lead to a deterioration in the transmitted electrical signal, which will subsequently increase the temperature. Sometimes an external examination will not help to identify a violation of the integrity of the veins, and only a deep examination will help to identify such destruction. The integrity of the wiring is compromised due to oxidation of the contacts, and since such a process is inevitable when operating machines, this means that they need to be cleaned periodically.

If the electrical signal is supplied in a distorted form, then the malfunction will be felt throughout the entire VAZ-2109 injector system.

Main advantages

The ignition system used for nines has good reliability indicators, although it produces energy up to 50 kJ, and the breakdown voltage can sometimes reach 30 kV or more. BSZ is valued for its high efficiency.

There are several main advantages that characterize contactless ignition systems.

Advantages	Peculiarities
SZ works with a Hall sensor	Because of this, the spark energy parameters are not affected by the voltage in the electrical network or the frequency of the engine. This is due to the fact that the time period of energy concentration in the ignition coil is always constant. This ensures high efficiency of the circuit
There is no mechanical interaction between contacts	This ensures there is no contamination or burning of contacts, so there is no need to clean them
No need to adjust the position of the contacts	This can be explained simply - they are not in the SZ VAZ 2109
Minimal mechanical interactions between parts	This factor contributes to the absence of rotor vibrations, resonance, and uneven spark distribution across the spark plugs
The energy in the candles is constantly increased	It can reach 50 J, which allows you to avoid failures when igniting the air-fuel mixture in the cylinders. This is especially noticeable when accelerating a car.
Cost-effective and environmentally friendly	The use of the new SZ made it possible to improve fuel economy by approximately 5 percent, as well as reduce CO emissions by 20 percent
Stable cold engine start	Even if the battery is discharged to 6V, you can still start the engine without problems. This makes BSZ significantly different from other ignition systems that cannot boast of such stability.

Scheme