5. Electrical diagram of VAZ-2108 VAZ 2108 Lada Samara

It is impossible to imagine the operation of any car without any devices powered by electric current. Starting from the most basic thing - supplying a spark, and ending with secondary functions that affect the comfort of the driver and passengers - heated seats, LCD monitor and audio system, GPS navigator, etc., they all require a certain amount of current to operate.

There are not so many electrical appliances in the VAZ 2108 car, but still, they need constant recharging. Where it comes from, how it gets to each device, what methods of protection it has, etc., we will look at in this article.

VAZ 2108 options

VAZ 2108 carburetor diagram

Front half of the diagram

* Installed on parts of manufactured cars.

Rear half of the diagram

* Mounted on some passenger cars.

One-piece scheme

Healthy ! VAZ 2109 diagram.

Generator circuits

This section presents a diagram of a VAZ 2108 generator of two types. One of them is a 2108 carburetor generator circuit designed for the model 37-3701 generator mounted on carburetor engines. Another connection diagram for the VAZ 2108 generator is intended for the generator model 5102.3771, installed on cars with a VAZ-2111-80 injection engine.

Electrical circuit of generator 37.3701 carburetor engine

The generator model 37.3701 is mounted on VAZ 2108 cars with carburetor engines.

Generator circuit 5102.3771 injection engine

On a car with an injection engine mod. VAZ-2111-80 was standardly equipped with generator 5102.3771 (Russia), but generator 94.3701 can be installed instead.

The voltage to excite the generator when the ignition is connected is supplied to the “D+” contact of the regulator (the “D+” terminal of the generator) through control 4 located on the dashboard. When the ignition is connected, the light should glow, and after starting the engine, it should go out if the generator is working. A bright glow of the light bulb or its burning at full intensity indicates a malfunction of the generator.

Electrical circuit for testing a generator on a bench

Electrical circuit for checking a generator with an oscilloscope

Prevention measures

What preventive measures will help maintain the health of electrical wiring:

1. All problems that arise in the operation of electrical devices must be resolved as quickly as possible. If there are a lot of them, normal operation of the car will be impossible.
2. When installing new devices, the wiring should be laid where there are no rubbing parts and mechanisms, this will preserve its integrity . In addition, when laying, keep in mind that all wires must be reliably insulated.
3. The use of homemade fuses in the mounting block is not permitted. If the fuse element has blown, then homemade devices (coins or jumper wires) can be installed only to get to the nearest store. Using such fuses can cause short circuits and even fire, so be careful.
4. Periodically diagnose the performance of the generator, in particular, we are talking about its belt. It is necessary to ensure that the strap is always properly tensioned, since insufficient or excessive tension will also affect the operation of the electrical system.
5. Twice a year, charge the battery, check the presence of electrolyte in the banks, and visually inspect the case for damage or cracks. Damage and cracks in the structure will lead to leakage of electrolyte, which, in turn, will cause the device to discharge.
6. Try not to use cheap Chinese devices and appliances, for example, cigarette lighter splitters. As you know, the cigarette lighter socket is designed for a certain power, and if you decide to connect several devices to it at the same time, the load on the socket will increase significantly.

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Electrical diagram for connecting the VAZ 2108 starter

A starter of brand 2113-3708010-00 from the Pramo company, produced in Russia, was installed on the car, but starters of brand 29.3708, 423.3708 can be installed. All starters are a DC electric motor with mixed excitation and an electromagnetic two-winding traction relay.

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.

Ignition circuit 2108

Here is a diagram of the contactless ignition of the VAZ 2108. The 2108 ignition connection diagram includes the 2108 switch and its connection diagram, as well as other devices, a list of which is given in this section.

Equipment for the contactless ignition system of the VAZ 2108 car:

• Ignition distributor sensor - 40.3706 or 40.3706-01;
• Switch - 3620.3734, or 76.3734, or RT1903, or PZE4022;
• Ignition coil - 3122.3705 with a closed magnetic circuit, dry or type 8352.12
• Spark plugs - A17DVR, or A17DVRM, or A17DVRM1, or FE65PR, or FE65CPR

Important ! You need to carry a Hall sensor and a switch in your car. The breakdown of these devices is quite large, and it is impossible to repair them or replace them with another one. If they break, the engine cannot be started, but changing them is easy. The same applies to the ignition coil, but it is more durable than the sensor and switch. If absolutely necessary, it can be replaced with a solenoid from another car.

Important ! Electronic ignition circuit for the injection engine of the VAZ-2111-80 model of the VAZ 2108 passenger car.

What elements does the diagram include?

The main components of the electrical circuit in the VAZ 2108:

• ignition system, including a lock, starter, spark plugs, distributor, as well as high-voltage wires transmitting current;
• sound signal unit;
• electric windows, if the car is equipped with them;
• heating system;
• heated rear window;
• lighting, including headlights, side lights, turn signals, brake lights, interior lights, as well as fog lights, if the car is equipped with them;
• a windshield and rear window washing system, including windshield wiper blades and an electric motor;
• cooling Fan;
• dashboard, where the speedometer, tachometer, fuel and engine temperature gauges, econometric gauge, as well as all indicators are located;
• steering column switches for controlling turn signals, washer systems, and high beams;
• battery;
• generator unit.

Full diagram of the G8 equipment

In general, the electrical circuit consists of many devices, and it doesn’t matter whether we are talking about an injector or a carburetor, whether the car is equipped with a high tidy or a low panel.

The main components of any electrical system, without which engine operation is impossible, are the following:

1. Dashboard. If it fails, operation of the vehicle will be impossible. Even if the car starts, the driver will not be able to know how fast it is moving, what the engine temperature is, or how much fuel is left in the tank.
2. An ignition system that combines several components that we have already talked about.
3. The battery, thanks to which the power unit is started, also allows electrical appliances and equipment to operate when the engine is turned off.
4. The generator unit is one of the main ones, since it is it that supplies power to all electrical equipment when the motor is functioning. When the car is running, the generator also powers the battery, allowing it to replenish the energy it expended to start the engine.
5. Mounting block with fuses located in the engine compartment, under the windshield opposite the driver's seat.

1. Generator device connection diagram

2. Contactless ignition system

Wiring diagram for windshield wiper and washer

Windshield wipers are available from domestic or Hungarian manufacturers. They are interchangeable in connection and mounting dimensions. The motors with gearboxes of these devices are also interchangeable, although they have some differences in design.

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.

Wiring diagram for windshield wiper 2108 tailgate glass

On some cars, tailgate glass cleaners may be installed along with electromagnetic washer chokes.

Malfunctions

If the electrical circuit of the car has any malfunctions, then they need to be eliminated as quickly as possible. Otherwise, this may affect the condition of the devices for which this circuit is responsible. In the event of a malfunction or short circuit, at best, some element of the electrical system will fail, and at worst, the car may catch fire.

In order to determine the state of any system, you need to pull out the fuse that is responsible for the circuit you are interested in. Inside the fuse there is a contact, which, in the event of a voltage drop or short circuit, simply burns out. In this case, it is necessary to inspect each element of the affected circuit. It is better to do this under the supervision of a specialist. Since electrical faults can end very sadly.

Heater fan motor connection diagram

Electrical diagram of the rear window heating system

If the glass does not warm up when the heating is connected, you need to check fuse F4, the wires and their connections, as well as the switch and relay 2.

If the rear window heater breaks down, the manufacturer recommends replacing the entire glass, but now the retail chain has special kits for repairing broken heater threads, which consist of the necessary components, tools and instructions for use.

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.

Why do you think the owner needs a GAZelle wiring diagram?

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.

Connection diagram for the VAZ 2108 instrument cluster with a “low” panel (rear view)

The connections of the instrument cluster are made by printed wiring on a foil getinax plate. The plate is attached to the back of the case.

Books and diagrams for repairing VAZ 2108

Here you can download the following books on the repair and operation of the VAZ 2108 passenger car and its modifications.

• Catalog of spare parts for VAZ-2108, VAZ-2109 cars and their modifications / 1992
• 160 pp.
• Size - 72.8 MB
• Format - pdf

Device and principle of operation

First, you need to determine: what type of power supply to the engine is currently subject to discussion. After all, the carburetor and the injector have completely different devices, and each of them has its own electrical circuit. You and I will talk about the type of power supply for the VAZ 2108 engine - a carburetor.

The wiring originates from the battery. Typically, a 12 volt (6 amp) battery is installed. On its way to various appliances, electricity passes through the fuse box. Further, it stabilizes its power using a number of devices: a switch, a voltmeter and an econometer.

After this, the electrical circuit is distributed directly to the main components of the VAZ 2108 devices. Let's start with the lighting devices. These include: headlights, low beam and high beam, engine compartment lighting, taillights, turn signals, interior lighting, and license plate lighting. Each of the above elements receives a different amount of energy. For example, for high beams, the current will be more powerful than for dimensions.

As for the operation of the VAZ 2108 engine, the following devices are required: a generator, control systems responsible for the carburetor, starter, ignition coil, distributor and spark plugs. The wiring diagram transfers electricity from the ignition coil to the spark plugs. In this case, while the engine is running, the generator is turned on. The distributor is responsible for distributing the spark between the combustion chambers of the cylinders. Each cylinder has its own stroke sequence, which is determined by the engine diagram.

The control systems responsible for the carburetor must open the valves in time, helping to form the correct combustible mixture in the float chamber. They also regulate the operation of the solenoid valve.

The carburetor has a simpler wiring diagram than the injector. This is because the injector circuitry involves electrically controlling the injection and mixture formation, while the carburetor does most of this work mechanically.

Further, the electrical voltage circuit in the VAZ 2108 car includes devices designed to improve driving safety and comfort. These include: air conditioning, heater, windshield and headlight washers, radio, and horn.

Also, the VAZ 2108 car has sensors that determine the temperature and level of fluids necessary for engine operation. Each of them is also powered by a battery. Sensor indicators are displayed on the instrument panel so that the driver can see them. The dashboard of the VAZ 2108 includes 16 indicator lights, a speedometer and a tachometer.