Repair of a vaz 2109 do it yourself electrician

In detail: do-it-yourself electrician repair of a vaz 2109 from a real master for the site my.housecope.com.

nuts are very hard to unscrew (just a normal key will not work) - they stick;
in order to remove the SHPUS, a special tool is required - it is almost impossible to remove it with the help of the hands;
The replacement procedure may take less than 2 hours for you, and in the service it will take 20 minutes.

carry out technical maintenance and change fluids;
Use the transport media in a cool manner.

I have a problem in my clutch when I press the clutch pedal, does it whistle?

Some "successful" change of the BB wires can lead to the replacement of the starter, the carburetor, the air filter and its casing, when the engine is ejected or For cranking without start-up, the most safe option is the option with disconnection of the input of the commutator from the output of the distributor or disconnection of the power supply from the commutator.
The engine temperature is determined by the temperature and during the correct cooling system must not depend on the load.
Replacing the release bearing

The elements of the design of the car are the things that are sufficiently serious and hard to remember. For example, do you know what an interculer is? If not, then take a look at this article. Here you will know what it is for the device, why it is necessary and many other things.

The article is dedicated to the repair of Chevrolet Niva. You will know what to do with the problems that got you in the way. Among the illuminated faults you will find: the engine does not start or ignite, the car moves in jerks and much more.

Of course, the wheel is an important part of the engine. Its defects are often caused by the fact that the engine does not work. But in this case it is absolutely unnecessary to buy a new piece. You can grind it. This is what will be discussed.

Video (click to play).

Car owners of domestic cars often encounter wiring faults, which can lead not only to the inoperability of certain systems, but also to the impossibility of movement in general. To prevent this, the owners of "nines" need to know what the VAZ 2109 wiring diagram is and what symptoms indicate its malfunction.

There are several types of vehicle wiring conditions, in which the owners of the VAZ 2109 are forced to look for breakdowns:

The vehicle does not allow performing its primary function, that is, it cannot drive. Either the wiring diagram of the VAZ 2109 is damaged, or one of the main components of the machine does not work.
The car can go, but the systems sometimes start to junk or do not work correctly.

If, when trying to start the engine, the driver does not succeed, while the fuel normally enters the injector or carburetor, then most likely the problem lies in the wiring:

If the car is running on a carburetor, the first step is to check the spark plugs and high-voltage wiring harness. It will not be superfluous to diagnose the distributor, as well as the ignition coil. It also makes sense to check the engine compartment wiring on carburetors.
When it comes to the injector, the electronic motor control system is often the main cause of the problem. If the system does not allow processing signals from sensors and subsequently cannot issue commands for additional units or mechanisms, then the problem must be looked for in it.

Posting on the domestic "nine"

In both carburetors and injectors, burned contacts, in particular, in the ignition lock, are often the cause of electrical malfunction. If the ignition switch or the mounting block cannot work fully, at least the lighting lamps in the passenger compartment will not work. In addition, with faulty devices, other electrical equipment, for example, washers, fans, glass cleaners, etc., may malfunction.

Before we talk about the breakdowns of carburetors and electrical equipment, we suggest you understand the scheme according to which the system works:

When the driver turns on the ignition but does not start the engine, power is supplied through the high-voltage wire harness to the motor terminals, and indicators on the instrument panel light up.
Further, the starter activates the operation of the crankshaft, as well as the entire piston group. In the same way, the voltage across the high-voltage wire harness also starts the generator. The panel continues to work.
Then the power from the device goes to the ignition coil, which starts to generate a pulse. The impulse goes through the high-voltage wire harness to the distributor, the instrument panel is working.
After that, the crankshaft of the motors begins to rotate the distributor drive. The device begins to close the contacts, thus transmitting the discharge through the same high-voltage wiring harness to the carburetor spark plugs. The instrument panel continues to operate normally.

In the event that you cannot start the engine on the carburetor, you must pay attention to the diagnosis of the following elements:

Inspect electrical wiring between coil and generator. You need to check the contacts for breaks or oxidation, sometimes they can just be cleaned, in some cases they need to be replaced. If the electrical circuit itself is in a sad state, then it may make sense to replace the wires.
You should also diagnose the ignition coil. First of all, you need to check for a spark. To do this, remove the high-voltage wire from the distributor harness and bring it to the metal elements of the engine compartment. When you try to start the engine by turning the key in the ignition, a spark should appear from the high-voltage wire. If it is not there, then the coil is out of order, it needs to be repaired or replaced.
In addition, you need to check the distributor circuit and the candles themselves. If you see that the high-voltage wires in the bundle are in a sad state, then it may make sense to change them. Diagnose the internal slider, as well as the carburetor plugs themselves (video by MR. Boroda).

The VAZ 2109 can be equipped with an electronic, that is, a contactless switch that is mounted between the coil itself and the distributor. The electronic system is designed to provide a better spark when the engine is running lean. In the event that the impulse is too low or absent altogether, as you were able to verify during the spark check, then it would be better to change the switch. In the event that the installation of a new device did not allow solving the malfunction, it will be necessary to completely or partially change the wiring. There is a chance that the resistance level in the circuit is very high, and this contributes to a too weak spark.

Injectors differ from the above-described internal combustion engines by the presence of many electronic devices. In the case of an injector, breakdowns are usually associated with the operation of the sensors or the wiring itself.

To accurately identify the cause of the failure on the injector, the following steps must be followed:

first disconnect the cable from the sensor;
then, using an ohmmeter, measure the resistance level;
after that, the data obtained will need to be verified with those indicated in the table in the operating instructions for the car.

Read also: DIY repair gst 112

Vaz 2109 electrical equipment malfunction

P10 at 8A and P11 at 7.5A - in response to the right headlamp-marker and the right taillight.
P11 with 8A and P2 with 10A - are responsible for the turn signals and emergency lights.
P12 with 16A and P4 at 20A - for the rear window heater, cigarette lighter and plug socket.
P13 and P14 with 8A and P15 / P14 with 7.5A are responsible for the illuminators / high beam.
P15 / P16 with 8A and P13 / P12 with 7.5A - responsible for the illuminators / low beam.

Instrument panel and its diagram

A frequent problem associated with a VAZ 2109 with an electrician is the instrument cluster. It is built into the dashboard on the driver's side and includes a system of instruments that monitor the current state of the car.
These can be devices such as an oil pressure gauge, an engine speed gauge, or just a series of warning lights.

VAZ 21093 electrical malfunctions

If the temperature and fuel level gauge does not work, then the cause may be either a malfunction of the bulbs or sensors themselves, or an open circuit in the power circuit.
Treatment: ringing the entire circuit and checking the fuses. If it does not help, then checking the performance of devices and sensors, followed by their replacement.

It also happens that you have just refueled at a gas station, but the pointer arrow returns to the beginning of the scale.
Check if the float limiter has been knocked down. It also happens that it is incorrectly installed or adjusted (limiter).
We remove the sensor and re-adjust it.
If this very arrow constantly jumps and at the end drops to zero, the problem is in the weak contact of the resistor. There may be another reason here: an open circuit in the resistor.
Treatment: replace the fuel level regulator with a new one.

Another popular malfunction associated with the constant burning of this light bulb. The reason may lie in the short circuit of the sensor itself or its flexible bus.
Treatment: disassemble the regulator, straighten the bus and eliminate the short circuit.

If the warning lamps on the instrument panel do not work, then they may have burned out or are weak in the sockets.

Treatment: lamps are replaced or their contacts are tightened.

It is possible that the contacts have oxidized. In this case, you need to thoroughly clean them.

Note. In general, in this case, it is recommended to ring all the wiring with the tester.

An equally common malfunction, implying the following operation: replacing the cable.

Before replacing, it is recommended to check the tightness of the lug nuts.

It also happens that noise is heard when the speedometer is operating. In this case, the flexible shaft is most likely deformed.

Vaz 21093 electrical equipment malfunction

On this, checking and troubleshooting the VAZ 2109 electrics can be considered a finished business. It is extremely important in the process of working with your own hands, not to ignore the instructions for the car.
In addition, it will be useful to study various photo and video materials. If you learn how to fix such problems on your own, you can save a good family budget, because the price of services of this kind among auto electricians is excessively high these days.

Front-wheel drive AvtoVAZ models are popular with car owners. One of these models is the VAZ-2109. Problems periodically arise with any car. With some of them, the owner of the car can cope on their own. After studying the electrical circuit of the VAZ-2109, it will be possible not only to eliminate faults with the electrical, but also, if desired, to make improvements to it.

The VAZ-2109 has two sources of electricity at once - a generator and a storage battery. After starting the power plant, all electrical equipment of the car receives power from the first device.

The battery is necessary to supply voltage to the starter and other 12 V energy consumers when the engine is off.

Car enthusiasts trying to find information on the wiring of their car on the Internet often face some problems: the fact is that models were produced with a high and low panel, as well as an injection and carburetor system. In addition, there is also an export version, equipped with additional options that are absent in the basic configuration, for example, power windows.

To determine exactly which VAZ-2109 scheme is needed by the car owner, you should deal with the following factors:

Determine which panel the machine has - high or low. This can be found out by the location of the instruments. If the car has an injector, then almost certainly a high panel is installed on it.
The wiring diagram for the export version is similar to the basic one, with the exception of additional options.
If you need a diagram of the electronic power plant control system, then this is a separate document that must be downloaded in addition to the main one.

They can be divided into two groups: problems with the generator and problems with other devices.Although the electrical diagram of a VAZ-2109 with a carburetor and a low panel differs from a car with a high one, the main elements, as well as their malfunctions, are common.If a red light is on on the panel, then power from the generator to the electrical equipment is not supplied. Every car owner should remember this. In such a situation, it is impossible to jam the power plant and you will have to get to the house without stopping, after which you have to eliminate the problem that has arisen.To do this, you need to do the following:

check the integrity of the alternator belt;

if the belt is intact, you need to check its tension.To do this, it is enough to press on it with your hand from above, if it bent 10 or 15 cm, then everything is fine;

having unscrewed the nut securing the generator to the body, using a pry bar, it is necessary to move the device back, after which it is tightened back;

the integrity of the corresponding fuse is checked and, if necessary, this element is replaced.

If a positive result is not achieved again, it is worth checking the generator itself. It is better for novice motorists to contact a service center, and experienced ones can check the operation of the voltage regulator of this device. Moreover, this can be done without dismantling the device:

It is necessary to start the engine and give it time to run at medium speed.

The measurement is carried out with the headlights on, by installing the voltmeter probes on the corresponding terminal of the regulator and the mass of the generator. The normal voltage is 13-14 V. If this indicator is higher or lower, then the regulator must be replaced.

Often on the VAZ-2109 there are problems with control lamps or some devices. All these elements of the electrical circuit of the VAZ-2109 car with a carburetor or an injector are located on the panel. If the fuel level or temperature indicators are faulty, then not only their malfunction, but also an open circuit in the power circuit can become the source of the problem. The car owner needs to ring the entire electrical circuit, and if this does not help, check the performance of the sensors and the devices themselves.When the control lamps are constantly on, then they should be replaced or the contacts should be checked. However, in the event of all these malfunctions, it is still worth ringing the entire circuit to make sure that it is fully operational. Another common malfunction is problems with the operation of the speedometer. Most often, its source is a cable.Some owners of early car models are faced with the need to replace the power plant due to its depletion of its resource. After that, the wiring diagram of the VAZ-2109 with a carburetor is also being revised. Since the fuel injection system has a large number of sensors, it is necessary to replace the wiring in the car, which is quite possible to do with your own hands. This applies to all high-voltage conductors, as well as the wires of the ignition system.However, you should first study the description of the VAZ-2109 wiring, since you cannot make changes to some electronic systems of the machine, for example:

change the shape of the headlights;

rear license plate lighting system;

install sound devices with signals of emergency services.

Simultaneously with making changes to the electrical circuit of the car, the operability of the main sensors located in the engine compartment should also be checked. Often, the need to change the wiring also arises when installing a modern alarm system. The owner of the VAZ-2109 must periodically inspect the standard wiring in order to identify possible mechanical damage or violation of the integrity of the insulation coating of the wires.

1 Aggregates and devices that make up the electrical circuit of the car

1.1 Battery and its possible malfunctions
1.2 Vehicle generator and its possible malfunctions
- 1.2.1 How to carry out the initial diagnosis of generator malfunctions
- 1.2.2 Checking the condition of the brushes and the voltage regulator relay
- 2 Starter and its possible malfunctions
  - 2.1 Fuse and relay box: purpose and need for replacement
  - 2.2 Replacing the fuse box
  Electrical faults are quite common in the daily automotive life of car owners. In this article, using a photo, it will be described what breakdowns are and how to fix them correctly.
  As a visual aid, cars of the VAZ 21099 and VAZ 2109 brands are used. The electrical circuit of any car includes a fairly large number of units and devices that ensure the smooth operation of the power unit and the machine as a whole.
  Most of them are quite complex in design and require special attention in terms of maintenance and repair. For objective reasons, it is better to entrust the repair of electrical equipment to a qualified car service specialist, but some work can be done by hand.
  
  The importance of each device or unit as a whole for the car's electrical supply system is unconditional. As already mentioned, there are a lot of them.
  But among the main ones it should be noted the following:
  - Accumulator battery.
  - Generator.
  - Starter.
  - Fuse and relay box.
  It is for these units that we will consider a number of breakdowns and malfunctions, the reasons for their occurrence and how to eliminate them.
  
  The purpose of this device is that it provides power to the electrical system of the vehicle with a direct current with a voltage of 12V. This current creates the necessary conditions for the correct operation of all components of the car's electrical circuit, both when the engine is off and when it is started (meaning the operation of the VAZ starter).
  The state of the battery and other units is signaled to the driver by a lamp installed on the instrument panel. If the lamp comes on while the engine is running, it means that the battery is not being recharged.
  The possible causes of this problem and how to fix it will be described in the next subsection.
  In general, the normal operation of the battery depends on its timely maintenance:
  - Monitoring the electrolyte level in the battery sections and, if necessary, adding distilled water.
  - Timely battery recharging.
  Recommendation: The battery should be serviced carefully and protected from mechanical damage. Also, the terminals must not be closed.

Generator vaz 21099: repair

The main purpose of a car generator is that when the engine is running, it starts to generate electricity, which ensures the operation of the car's electrical circuit equipment. The generator is located in the engine compartment and is connected to the engine via a belt drive.
As many motorists have already seen, nothing is eternal in a car. Any unit or assembly of the car may sooner or later require repair.
And the car generator is no exception. On a VAZ 21099 car, repairing a generator, provided the proper conditions, tools and devices are available, does not present any particular difficulties.
However, this requires some knowledge, and the following instructions will help.
However, first, it is necessary to note the signs and causes of generator breakdown:

The first reason is purely mechanical. When the generator is operating, extraneous noise appears.
These noises indicate bearing failure. In this case, it is necessary to disassemble the generator and replace the failed bearing.
The second reason is a decrease in the voltage at the "output" of the generator. In this case, the signal lamp "lights up".
This may indicate that the brushes are worn out and the contact of the winding with the rotor is broken. And also the tension of the alternator drive belt can be loosened.
To eliminate this problem, you must accordingly: replace the brushes and remove the drive belt slack.
The third reason for a generator breakdown is an increase in output voltage. As a rule, in this case, fuses often blow out.
In this situation, it is necessary to check the efficiency of the diode bridge of the generator and, if necessary, replace it. The failure of the diode bridge can also be safely included in the second cause of breakdowns.

Note: In the event that the autogenerator fails, the power to the electrical equipment begins to come from the battery and the car will drive only as long as the battery is charged.

To check the condition of the bearings, turn on the engine and touch the generator housing with your palm. With significant bearing wear, vibration will be quite noticeable.
It cannot be confused with anything.
To check the condition of the alternator drive belt, the engine must be turned off. Carefully, visually check the integrity of the belt.
Further, by pressing, it is necessary to determine the level of belt deflection. It should not exceed 15mm.
The “output” voltage is checked with a voltmeter. It is necessary to turn on the engine and measure the voltage at the battery terminals.
With a working generator, it will be from 13.6V to 14.0V. If there is no voltmeter, you need to buy one. The thing is very useful and inexpensive.
Its price is no more than 100 rubles.

Checking the condition of the brushes and the voltage regulator relay

Before dismantling the generator, in order not to do unnecessary work, it is necessary to check the condition of the brushes and the operation of the voltage regulator. They are located at the rear of the generator housing.
The brush holder with the regulator can be disconnected without dismantling the generator.
To do this, you need to do the following:

Disconnect the negative terminal of the battery and thus de-energize the vehicle's electrical circuit.
Disconnect the contact cable from the brush holder.
Then, using a Phillips screwdriver, unscrew the two fixing screws and remove the brush holder.

As a small addition to the clarity of the elimination of individual problems, we offer you to watch the video:

Caution: When unscrewing the fastening screws, be extremely careful not to let them fall on the crankcase protection. It will be problematic to get the screws.

Having disconnected the brush holder, it is necessary to check the condition of the brushes. There should be no cracks or chips on them.
The brushes should protrude from the brush holder at a distance of at least 4mm. If these deviations from technical standards are found, the brush holder together with the relay must be replaced.
Next, we check the serviceability of the voltage regulator. To do this, you need to draw up a diagram, which is shown below:

Voltage regulator test circuit

With this scheme, if the voltage of the power supply is 12V, then the control lamp will "light up". If the voltage is raised to 15V, the lamp will "go out".
The discrepancy between the switching on and off of the warning lamp indicates that the unit is defective and must be replaced.

A starter is exactly the device without which it is impossible to start a car engine. This is its main task.
Structurally, the starter is the same electric motor. And like any unit, as a result of wear of parts, it can fail.
For example, in a VAZ 2109 car, electrical repairs do not have big difficulties. However, it is especially difficult to dismantle the starter.
In principle, this applies to all models of this series. If difficulties do not frighten in this process, then you can safely proceed with the diagnosis of malfunctions and repair of the starter.
To check the performance of the starter, first of all, it is necessary to put the battery in order. It must be charged.
Next, you need to turn on the "ignition" and carefully listen to the starter.
Signs of its breakdown may be the following:

The solenoid relay does not operate. In this case, there is no characteristic click.
The starter shaft does not rotate or rotates at insufficient speed.
When the starter is turned on, a specific "ratchet" sound is heard. This means that the starter gear does not fully mesh with the flywheel.

All of the above indicates that the starter needs repair. And for this it must be dismantled.
This procedure assumes the following:

The first step is to disconnect the battery terminals.
Then we disconnect the contact cables from the starter.
Next, the three nuts securing the starter to the crankcase are unscrewed.
We remove the starter.

After cleaning and flushing, the unit is ready for diagnosis and disassembly. In order to diagnose the operation of the starter, you need a fully charged battery.
Next, a terminal is connected to the starter case with the "minus" of the battery and the "positive" contact, we check the operability of the retractor relay. If the positive wire is connected to the relay contact bolt, the starter shaft will move forward.
If you connect the positive wire after the relay, the starter rotor should rotate. In the first case, if the movement did not occur, then the relay must be replaced.
In the second case, in the absence of movement, it is necessary to check the condition of the brushes (see Replacing the starter brush and all about it), slip rings and stator winding. If defects are detected, a decision is made to eliminate this problem and further repairs are performed.

Recommendation: When disassembling, the stator parts must be laid sequentially, in a previously prepared place. This will avoid confusing their assembly.

Vaz 2109: repair of the fuse box

This device plays a very important role in the safety of electrical equipment. Its main purpose is to prevent a short circuit in the electrical wiring in the car and thereby avoid a fire, as well as quick access to relay devices.
The main reason for the need to replace this device is the excessive load that appears as a result of the simultaneous inclusion of several units in the electrical circuit. This additional load can lead to overheating of the power grid and rupture of it.

You will need a Phillips and flathead screwdrivers to replace the unit.
The block is replaced in the following order:

First you need to remove the negative terminal of the battery.
Then, turning the three locks 90 degrees, remove the cover of the mounting block.
Next, unscrew the bolts securing the fuse box to the front panel.
Carefully remove the block from the studs.

Video (click to play).

The ninth VAZ model also has an additional relay. It is located to the right of the steering wheel.
In order to dismantle this relay, it is necessary to disconnect the supply wires and use the R8 key to unscrew its fasteners to the panel. The new unit must be installed in the reverse order.

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