Replacing wipers on a VAZ 2107

Windshield washer does not work

To remove dirt from the windshield, the washer is used together with the windshield wiper. The device sprays water or a special liquid. The main elements of this mechanism are:

• fluid reservoir;
• motor;
• nozzles;
• connecting tubes.

During the operation of a car with a washer, various problems may arise that lead to its inability to work:

• motor failure;
• fuse blown;
• kinking of tubes;
• breakdown of the steering column switch;
• poor contact on the power supply circuit.

Checking the motor

It is easy to check if the washer pump is not working properly. To do this, just open the hood and pull the lever of the steering column switch, which is responsible for the function of supplying fluid to the windshield. At this moment, the operation of the motor will be clearly audible. If this does not happen, then the malfunction may be caused either in the pump itself or in the fuse or other part of the electrical circuit. To make sure that the problem lies in the motor, we use a multimeter to measure the voltage when the washer is turned on. If there is voltage, but the pump does not work, then you need to take care of replacing it.

Video: checking the wiper motor on a “classic”

The VAZ classic windshield wiper does not work. We are looking for the reason. 1 part.

Injectors

If the motor is running, but liquid is not supplied through the nozzles, then the problem will not be difficult to identify, since there are only a few reasons for this phenomenon:

• clogged injector fittings;
• the supply tube has come off;
• kinking of the tube.

The malfunction can be determined by inspecting the tubes from the motor to the injectors. If there are no areas with kinks and the tube has not fallen off, then the reason lies in clogged nozzles, which can be cleaned with a sewing needle and blown out with a compressor.

Fuse and mounting block

The integrity of the fuse is checked in the same way as for windshield wipers. The same protective element as for the wipers is responsible for the operation of the washer. In addition to the fuse, sometimes the track in the mounting block through which power is supplied to the washer burns out. In this case, you need to disassemble the fuse box and restore the current-carrying element by soldering, having first cleared the varnish from the track.

• VAZ 2107 wipers: purpose, malfunctions and repairs

Understeering's shifter

You should start checking the steering column switch on a VAZ 2107 if the fuse, motor and the entire electrical circuit through which voltage is supplied to the pump are in good condition. In this case, the wiring should not have breaks, melted insulation or other visible damage. To check the steering column switch, only a multimeter will be enough. Having disconnected the connectors from the device in question, we connect the probes of the device in the dialing mode with a two-pin block. If the switch is working properly, then when the washer is turned on, the device will show zero resistance. Otherwise, the mechanism will have to be replaced.

Main malfunctions of the mechanism and ways to eliminate them

When is windshield wiper motor repair required?

Before removing, checking the motor and replacing it, familiarize yourself with the main faults of the unit:

1. The device does not function, the safety element does not work either, but its integrity does not work. In this case, you must first diagnose the integrity of the wiring and contact connections, and if damage is detected during the diagnosis, they must be eliminated. If everything is fine with the wiring, then you need to check the steering column brush switch; it is quite possible that it has failed. Naturally, the problem may also lie in the electric motor, for example, its contacts are burnt or the brushes are acidified; if this is the case, then it will need to be repaired or replaced. It would not be superfluous to diagnose the wiring that goes to it and the block. It is recommended to clean the safety element or replace it if cleaning does not produce results. If after performing all these steps the system still does not work, then you will need to diagnose the integrity of the winding of the so-called motor armature. If the diagnostics show that the circuit is missing, then either the armature or the entire electric motor assembly is replaced.
2. The brushes do not work, while the safety element is working, and the fuse in the power circuit regularly fails. In this case, the levers are diagnosed - perhaps they cannot work as a result of deformation or freezing of the brushes to the windshield. It is much worse if the failure of the unit is caused by a short circuit in the armature circuit, then you will have to decide what to change specifically - the armature or the gear unit.
3. The device does not operate in intermittent mode. As a rule, such a malfunction is caused by a failure of a relay or switch. In both cases, it is better to replace the failed mechanism.
4. The wipers operate intermittently but do not stop. In this case, the problem, as a rule, lies in the inoperability of the relay or limit switch. If the reason is the switch, then most likely the spring plastic is not pressed to the end by the gear, and in this case it will just need to be bent (the author of the video is Igor Ivanov).

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If the wipers stop turning on

When the VAZ 2107 windshield wiper stops working in both positions of the mode switch, you should start looking for the fault with the wiper fuse. It is installed in the electrical network to protect it from overloads that occur during malfunctions, short circuits or increased load on the wiper motor. If the fuse is working, you should check its contacts. Often they are highly oxidized and prevent the passage of current. Cleaning the contacts is simple - you need to remove the fuse and clean the contacts with a knife, screwdriver or sandpaper. Usually these actions are enough, but sometimes the reason lies in a malfunction of the relay, switch or motor. But more on that below.

If the wipers do not work intermittently

This problem is associated exclusively with a malfunction of the VAZ 2107 wiper relay. The cyclic operation of the wipers is ensured by closing/opening the relay contacts and, accordingly, the power supply circuit of the wiper motor.

The test should begin by monitoring the power supply to the relay block. This is done like this:

• remove the relay;
• turn the wiper switch to the intermittent position;
• Use a control indicator to check the presence of voltage at the terminal.

If there is no voltage, it is necessary to replace the switch or repair the open circuit. If voltage is supplied but the relay does not work, the latter must be replaced. The design of the relay does not provide for the possibility of repair.

If the wipers do not stop at the lowest point

Sometimes when you turn off the wipers, the brushes stop not at the lowest point of the trajectory, but in another arbitrary place.
The problem lies not in the VAZ 2107 wiper relay, but in the drive gearbox. It contains a limit switch actuated by a cam. The operation of the cam controls the position of the brushes after turning off the power on the switch lever. Gearbox failure most often occurs in winter, when the driver turns on the wipers that are frozen to the windshield.

To replace the gearbox, you must dismantle it along with the engine and install a new one.

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If power is supplied but the engine does not run

There are several reasons why the engine may not work when power is applied. The most common are shearing or wear of brushes or failure of windings. The brushes can wear out over time, or they can freeze to the contacts and break when the VAZ 2107 wiper relay is turned on and power is supplied to the engine. The winding most often burns out when the motor is overloaded. To check, repair and replace the gearbox with the windshield wiper motor, it is necessary to remove the unit from the vehicle.

Dimensions

Thanks to the small size of the brush, you can save money. The length is identical for all positions. It is 340 mm. It is possible to install longer brushes. At the same time, they will not touch the body. The degree of cleaning of the windshield directly depends on the quality of the brush itself. You need to familiarize yourself with the characteristics in advance.

Original articles

Initially, only original parts were produced for the car. The year of release of the first car from the assembly line is the distant 1982. No imported parts were used. But it is not possible to find original components for installation on a VAZ 2107. After the collapse of the USSR, the release of this series continued.

But AvtoVAZ no longer produced such small parts as windshield wipers on its own. Finished products were purchased abroad, from third-party companies. As a result, assembly is significantly simplified

At the same time, it is important to understand that the quality of original wipers does not differ from products from third-party manufacturers

Original articles:

Replacement options

You can easily purchase wipers from third-party manufacturers. Moreover, their quality will be at a high level. Most famous brands monitor their reputation

It is only important to avoid buying counterfeits. For example, many of them are present at the Bosch company

You can easily identify a fake. It has poor quality packaging. There is no special hologram.

• 
  Repair of wipers on VAZ 2107

All wipers on sale can be divided into categories:

• frame;
• frameless;
• hybrid;
• winter.

All modifications without exception have their advantages and disadvantages. You need to choose a certain category based on the operating conditions of the vehicle and the region where it is located. Driving style and speed are definitely taken into account.

VAZ 2107 wiper malfunctions

Replacing a burnt out motor

During the winter season, at sub-zero temperatures, wipers often stick to the windshield. The wiper motor is under a lot of load, and it burns out if the bimetallic fuse does not work or the fuse burns out.

Location of the glass cleaner and washer fuse in the mounting block

In such cases, it is necessary to replace the motor. To do this, you need to remove all the parts in a certain order:

• Unscrew the fastening nuts;
• bend the lever and remove it from its seat;
• Using a 22mm wrench, unscrew the trapezoid fastenings on both sides;
• remove the plastic inserts;
• remove the hood seal;
• remove power from the windshield wiper motor;
• remove it with the drive from the hole in the body;
• bend the protective cover, unscrew the fastening nuts;
• press on the protrusions of the slots on the reverse side, on which the wiper arms sit, so that they fall inward, move in different directions, the trapezoid with the motor will come out.

Read, it may come in handy: What kind of torpedo can be installed on a VAZ 2107

Video instructions for replacing the windshield wiper trapezoid

After disconnecting the mechanism parts, you can repair the gear or install a new motor. But the electric motor must be inspected, even if it is in working condition. It is a conventional DC electric motor, the rotation of which, through a worm gearbox, is supplied to a trapezoid.

You should disassemble and repair the electric motor only if you are confident in your plumbing skills!

• Size of wipers for VAZ 2107 size and length of blades

Walk over the collector with a cloth soaked in solvent. If there is a lot of wear, you need to change the armature or motor. Defects on the gear will require it to be replaced. Assembly occurs in reverse order. Therefore, before installing a replacement electric motor, you need to clean the trapezoid from contamination, lubricate the rubbing elements, motor and gearbox.

Trapezius problems

The trapezoid transmits rotational movements from the electric motor to the wipers and ensures the reciprocating movement of the wipers while cleaning the glass. Interruptions in the operation of wipers occur due to problems with the trapezoid; oxidized bushings and corrosion on the axles lead to jamming and slow operation of the mechanism. You can remove the trapezoid with a flat-head screwdriver. To set the correct position when installing the trapezoid, you must:

• set the motor to the initial position;
• place the crank and short rod parallel to each other;
• After that, attach the motor to the trapezoid.

Wiper relay not working

If the wipers fail to operate in intermittent mode, it can be argued that the relay has failed. First you need to check the power supply to the relay block. To do this, you need to remove the relay, turn on the wipers in intermittent mode, and check the voltage at the terminals. If no current flows, you need to repair the open circuit or replace the switch. The design of the relay is such that it cannot be repaired. So, if it does not work under voltage, you need to replace the part with a new one.

Wiper switch

To check the voltage supply to the switch, you need to remove the pads from the steering control or on the relay connection blocks. There is always voltage on the black-yellow wire. Check on the red and gray wires. If there is no voltage on one of them, then you need to change the switch.

Causes of fuse blown.

If the wipers do not work in two positions of the switch, then most likely the fuse has blown, which serves to protect the circuit from short circuits and overloads. When the wiper control lever is set to the "off" position and the blades do not stop at the bottom of the glass or anywhere else, the problem is in the gearbox. It is there that a special switch is installed, which ensures that after turning off the brushes remain in the desired position.

Due to heavy overload of the electric motor, overheating of the wiring, or exposure to water, the fuse may blow. Replacing it is easy, but the cause of the burnout must be found out and eliminated.

Schematic diagram of a glass cleaner on a VAZ 2107

1. fuse;
2. wiper motor;
3. windshield washer motor;
4. relay and fuse box;
5. washer switch (water supply to glass);
6. three-lever cleaning speed switch;
7. VAZ 2107 cleaner relay. Type RS-514. Its mounting location is under the dashboard on the left, attached directly to the body;
8. egnition lock;

The standard wipers on the VAZ 2107 operate in intermittent and continuous modes. If they do not work at all, then first we do the simplest thing: before starting repairs, we check the fuse and the degree of oxidation of its contacts in the mounting block (location F2 for 10 A). The fuse is shared with the washer pump motor. So if the fuse is at fault, then water will not splash on the glass. When changing a fuse, pay attention to the size and color.

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If the wipers do not work in rare rain mode, then most likely the relay in the mounting block or the steering column switch itself is to blame. The diagram shows that if there is power on the wire suitable for the relay and the control light is on, or the ammeter deflects the arrow, then the relay is at fault, adjustment will not help, replacement is needed. If there is no current, then there is an open circuit in the steering wheel, and the switch is to blame.

Why did the wipers stop not at the base of the windshield, but “just anywhere”? The gearbox is to blame for this. What should we do with it?

Replacing the gearbox is an alternative, since due to its design, adjustment and repair are difficult, and spare parts are not sold; repair and replacement of its parts (although the size allows) is not carried out, with the exception of the gearbox gear.

What are the most common reasons why a gearmotor fails?

In winter, the wipers of the classic and VAZ 2107 often freeze to the glass after work, since it was warm in the cabin. Sometimes the next morning the driver tries, either by accident or because he is too lazy to get out, to “at random” move them from their place using the cleaning lever.

When stationary, the load on the motor sharply increases, since normally the heat generation scheme is compensated by conversion into mechanical energy, and when the shaft is stationary, the motor burns out very quickly. It is then that repairs are required, or rather, replacement of the gearmotor; adjusting it does not make sense.

Let's look at how this is done on a VAZ 2107.

Sequencing:

• We unscrew the wiper levers with an open-end wrench, size 10 or a socket head, then carefully remove the levers from their seats, having first bent them./

• Using an open-end wrench (size 22 mm), unscrew the trapezoid attachment points and remove the plastic bosses - inserts:

• After this, carefully remove the rubber profile - seal on the hood, and disconnect the power supply to the wiper gearbox:

• then we pull it and the wire out of the special hole in the body under the seal, unfold the cover, which performs a protective function, on the motor...

• and unscrew the gearbox mounting nuts, size M10. The most convenient way to use a wrench is:

• now you need to remove the bracket with the rods going to the lever drives together with the gearbox; you need to press the protrusions of the levers inward. They fall down, and after shaking a little - twisting carefully in different directions, the job is done!

• All that remains is to disconnect the gearbox and crank using the end nut (size 10 mm), and also unscrew the 3 nuts with which the trapezoid (bracket) is attached to the gearbox, now you can replace the motor.

In conclusion, we advise: if you have good knowledge of electrical engineering, the circuit diagram is no secret to you and you read it, are comfortable with a soldering iron, you can take on the wipers of the VAZ 2107. Repairing and adjusting them will not be difficult for you; if not, then actions such as replacing the gearbox and fuse, as well as the relay are quite accessible to you.

Dimensions

Thanks to the small size of the brush, you can save money. The length is identical for all positions. It is 340 mm. It is possible to install longer brushes. At the same time, they will not touch the body. The degree of cleaning of the windshield directly depends on the quality of the brush itself. You need to familiarize yourself with the characteristics in advance.

Original articles

Initially, only original parts were produced for the car. The year of release of the first car from the assembly line is the distant 1982. No imported parts were used. But it is not possible to find original components for installation on a VAZ 2107. After the collapse of the USSR, the release of this series continued.

But AvtoVAZ no longer produced such small parts as windshield wipers on its own. Finished products were purchased abroad, from third-party companies. As a result, assembly is significantly simplified

At the same time, it is important to understand that the quality of original wipers does not differ from products from third-party manufacturers

Original articles:

Replacement options

You can easily purchase wipers from third-party manufacturers. Moreover, their quality will be at a high level. Most famous brands monitor their reputation

It is only important to avoid buying counterfeits. For example, many of them are present at the Bosch company. You can easily spot a fake

It has poor quality packaging. There is no special hologram

You can easily identify a fake. It has poor quality packaging. There is no special hologram.

All wipers on sale can be divided into categories:

• frame;
• frameless;
• hybrid;
• winter.

All modifications without exception have their advantages and disadvantages. You need to choose a certain category based on the operating conditions of the vehicle and the region where it is located. Driving style and speed are definitely taken into account.

Frame

The classic type of construction has a metal frame. As a rule, frame wipers are the cheapest. They have advantages: durability, accessibility. Usually the price for a pair starts from 500 rubles. The disadvantage is the aerodynamic shape. As a result of air resistance, the contact strength of the windshield and wiper is reduced. Which leads to poor cleaning.

Frameless

Have less resistance to air flow. Therefore, they can cope with cleaning the windshield at any speed. They have a more presentable appearance than frame ones. Less durable.

Hybrid

They are free from the disadvantages of frame and frameless brushes. They are a single piece of rubber. But there is a metal structure inside. Which makes the brush more durable.

Winter

Winter wipers are distinguished by their elasticity - even at sub-zero temperatures they clean the glass well. The characteristics are achieved by adding rubber to the rubber from which the wiper is made. It retains its elasticity and is not subject to deformation. Easily tolerates strong temperature changes

This is especially important for regions with low average annual temperatures. Optimal choice:

• the temperature at which the car is operated;
• maximum speed - at which the movement is carried out;
• intensity of precipitation.

Electric motor of the tenth family - installation on a classic and replacement

The drive from the VAZ 2110 is ideal for classic VAZs and has the best characteristics. How to remove the motor was described above. Installing a new one is not difficult. The electrical part will have to be changed a little. There are more modes on the “ten” and in order to leave only two, we interfere with the motor.

VAZ 2107 Problems with wipers, solution, advice.

We tear off the petal soldered to the body (there may be a wire instead) and insulate it. We take out the wiring from the detachable terminal, there are only 5 wires. We bite off one of the yellow ones, it will not be needed. We strip the gray wire that goes to the capacitor, screw the yellow one to it, cut it off from the male wire, and isolate the connection. We remove the old block, insert 4 wires, starting from the top clockwise (the protrusion on the block is on the right). 1 – gray, 2 – blue, 3 – white, 4 – black.

The rear window of station wagon and hatchback bodies gets very dirty, which is why the VAZ 2111 and 2112 have a rear wiper installed. If everything is in order with the electrical equipment, we replace the electric drive. We remove the trunk lid trim: unscrew the screws and unclip the pistons. We unscrew the nut that secures the leash and remove it. We push two pistons from the inside and pull them out using pliers. We pry up the cover with a screwdriver, remove it and the protective cap. We unscrew one nut with a 24 wrench, two more with a 10 wrench. Disconnect the connector and remove the gearmotor.

Sources

• tuningkod.ru/obsluzhivanie-avto/neispravnosti/neispravnosti-v-salone/ne-rabotayut-dvorniki-vaz-2107.html
• ladaautos.ru/vaz-2107/pochemu-ne-rabotayut-dvorniki-na-vaz-2107-i-chto-delat.html
• znatokvaz.ru/elektrooborudovanie/pochemu-ne-rabotayut-dvorniki-vaz
• drive2.ru/l/6538637/
• bumper.guru/klassicheskie-modeli-vaz/stekla/ne-rabotayut-dvorniki-vaz-2107.html

How to change wipers on a VAZ 2107

Replacing wipers yourself usually does not cause any problems. In order to solve the problem, you need to carefully study the fasteners that are used to fix the frames. Usually this is a metal hook, which is why you need to choose cleaners with a suitable mechanism; for some, special adapter kits are sold that will help if the selected device has a different mount. Replacement usually takes a few minutes: just disconnect the old wipers and put new ones in their place. The mount has a latch that simply snaps onto the pin. It’s worth checking how the connection went; if it holds tightly, you can use cleaners.

Wipers on VAZ

Essentially, I wrote that operating a car with a faulty windshield cleaning system is prohibited, but driving when the wiper blades do not remove water and pollution is no better. My question is, is it possible to install a better carburetor one of these days with the GAZ 24. According to the text of the article, I would like to give their types, not in my opinion, what is the best wiper blade to install on the VAZ 2107.

Wiper size for VAZ 2107 13 inches

Removing and replacing the trapezoid and wiper motor on a VAZ-2107 - detailed instructions

Procedure for replacing a faulty motor

Unscrew the nuts that secure the brush levers. After this, they are dismantled from special slots in the form of a cone. To facilitate the work process, you can use WD-40 liquid.

Pull out the plastic brush bushings and rubber gaskets.

Lift the seal, which is located in a small slot in the engine compartment, and remove the wiring harness.

Unscrew the windshield wiper, which is secured with nuts and washers. Then unscrew the motor mounting bolts and remove it.

Install a new electric motor and reassemble the components in the reverse order.

During the external inspection, you need to make sure that all other components are in good condition, and if possible, replace all rubber and plastic bushings. Once everything is assembled, the motor replacement is complete.

Sources:

https://tuning-vaz2106.ru/6/kak-snyat-motorchik-dvornikov-vaz-2107-zamena-motorchika-dvornikov-na-vaz-2107.html https://moto-sol.ru/diagnostika-i -remont/kak-snjat-motorchik-dvornikov-vaz-2107.html https://my-zenit.ru/remont/snyatie-i-zamena-trapetsii-i-motorchika-dvornikov-na-vaz-2107-podrobnaya- instructions

Wipers VAZ 2107

The vehicle is operated in different climatic and road conditions. For safe and comfortable movement, the driver must have good visibility of the road situation, i.e. the windshield must always be clean. Windshield wipers provide mechanical cleaning of the windshield from dirt and sediment, improving visibility and increasing safety. We will consider possible problems with this mechanism and ways to eliminate them in more detail.

Principle of operation

The work of the wipers is quite simple and consists of the following sequence of actions:

1. The driver selects the desired operating mode of the windshield wipers using the steering column switch.
2. The entire windshield cleaning mechanism is driven by a motor.
3. The wipers move across the glass left and right at the selected speed, cleaning the surface.
4. When the mechanism is no longer needed, the steering column switch returns to its original position.

Wiring diagram for the wipers and windshield washer of the VAZ 2107: 1 - thermo-bimetallic fuse; 2 — windshield wiper gearmotor; 3 — electric motor for windshield washer; 4 — mounting block; 5 — washer switch in the three-lever switch; 6 — wiper switch in a three-lever switch; 7 — windshield wiper relay; 8 — ignition switch;

Components

The windshield wiper consists of the following main elements:

• lever mechanism (trapezoid);
• electric motor;
• relay;
• brushes

Trapezoid

One of the important elements in the windshield wiper mechanism is the trapezoid. On almost all cars this part is the same, and the difference lies only in the methods of fastening, the size and shape of the elements. The functioning of the trapezoid consists of transmitting rotational motion from the electric motor to the wipers, as well as ensuring the synchronous movement of the latter for high-quality glass cleaning. The trapezoid consists of rods, a body and a hinge.

Trapezoid design: 1 - crank; 2 - short thrust; 3 — joint of rods; 4 — rollers of the windshield wiper mechanism; 5 - long pull

Motor

The electric motor of the windshield wipers of the VAZ “Seven” is made as a single unit with a gearbox and is one of the main links of the mechanism in question. The motor consists of a stator with permanent magnets and an armature with an elongated shaft, at the end of which a screw is threaded. The purpose of this unit is to ensure the movement of the blades along the windshield. The device is considered reliable and fails very rarely.

Wiper relay

On classic Zhiguli cars, the windshield wiper has two operating modes - fast and intermittent with an interval of 4-6 seconds. It is to ensure intermittent operation that the RS 514 breaker relay is designed. Delayed activation of the wipers is used during light rain, when too frequent operation of the windshield wipers is not required, and when the mechanism is completely turned off, the glass is gradually covered with small drops of precipitation and needs to be cleaned. The product is connected to the general wiring using a four-pin connector. On the VAZ 2107, the breaker relay is located on the driver’s side on the left side panel under the plastic trim.

The wiper relay ensures intermittent operation of the mechanism

Brushes

Almost all passenger cars use two windshield wiper blades. On the “seven”, elements with a length of 33 cm are installed from the factory. Longer brushes can be installed, but a greater load will be placed on the electric motor, which will lead not only to slower operation of the mechanism, but also to possible failure of the motor.

The VAZ 2107 is equipped with brushes 33 cm long from the factory.

Main types of wipers

If previously wipers or brushes for cleaning the windshield had only one type, today such products come in various shapes, types, and sizes. From the factory, the VAZ-2107 is equipped with standard windshield wipers, the shelf life of which is no more than 20 thousand km. Of course, it is wrong to tie brushes to the mileage of the car, so it is necessary to change products when they do not cope with their main task.

The wiper itself is a structure that is based on a body and a working element. The working element is the windshield wiper, and the housing is necessary to support this structure. Although today there are the following types of windshield wipers that can be installed on the VAZ-2107:

Windshield wiper blades LADA (VAZ) 2107 1982 – 2012

Heated windshield wiper blades for Lada 2107 1982-2012 (ATP kit) BURNER 5

Total products: 4

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Which wipers are better

Not only its price, but also its performance depends on what exactly the base of the purifier is made of. The quality of the base plays a major role in cleaning glass from moisture.

When choosing a product, you should pay attention to what it is made of. It could be:

1. rubber coated with graphite;
2. silicone;
3. Teflon spraying.

At first, graphite-coated rubber was used in wipers. They do the job well, but don't last long.

Silicone does not withstand low temperatures well, but otherwise always gives good results. 2 times more expensive than rubber ones.

Teflon has proven itself well in operation, but is expensive compared to conventional ones.

The manufacturer of the windshield wipers plays a big role. The highest positions in the ranking are occupied by: Bosch, Valeo, Heyner, Trico.

Where is the wiper relay located on the VAZ 2107?

VAZ 2107 is one of the most common cars in Ukraine. It is famous for its ease of repair and reliability. All this car needs is the care of the owner, good oil in the engine and gearbox and it will serve faithfully. One of its few problems is the wiper relay that often fails. This leads to the fact that the windshield wipers do not work at all, or their cycling gradually slows down. To restore the functionality of the device, the relay must be replaced, but this is not so easy. This article describes the location of the wiper relay on a VAZ 2107 and the process of replacing it with a new one.

How do wipers work and why are they needed?

The main task of windshield wipers is to create a good level of visibility in bad weather and to clear water and dirt from the car's windshield. Special auto chemicals and the use of the right washer can help them with this. Windshield wipers operate thanks to a special gear motor, powered by the vehicle's on-board circuit. And the relay marked RS-514 is responsible for the frequency of operation. The VAZ 2107 has two wiper operating modes - constant and cyclic, with a pause of four seconds. The efficiency of wipers is directly related to the quality of the battery; you can buy a good battery from us.

The windshield wiper relay, as one of the most important elements of the system, is located under the dashboard, on the left. It is fastened with two screws hidden under the upholstery. The connection is made using a special plug located near the headlight hydraulic adjustment handle. To check the device, the plug must be disconnected and pulled out.

Basic device

Knowing where the windshield wiper relay is located on the VAZ 2107 in the injection and carburetor versions is not enough. To carry out repairs, you should study the principle of operation. This device looks like a black box, inside of which there is a microcircuit and electronic components responsible for the proper operation of the wipers. The microcircuit consists of the following elements:

• electromagnetic coil;
• resistor and capacitor;
• microcontroller HP37.

Relay for wipers with adjustable pause VAZ
The connection is made using four wires, through which the windshield wiper motor is controlled.

How to replace the wiper relay

To begin with, it should be noted that in the carburetor and injection versions of the car the relay is absolutely identical. Next, you need to check the functionality of this device. The easiest way is to take a known working device from another machine and connect it. If the windshield wipers work, then the problem is here. In theory, if you have certain knowledge, you can try to restore it by identifying the failed element and replacing it. But if you need to fix your car urgently, the easiest way is to replace the device with a new one. This is very easy to do:

• Remove the negative terminal from the battery, de-energizing the entire on-board network of the vehicle.
• Unscrew 2 screws.
• Take out the plug, put it on the new device and screw it into place.

How does the wiper relay work?

The operation of the windshield wiper involves a chain of elements, which includes an electric motor, a fuse, a power button and a relay. The latter performs the most important function, managing the entire process. It functions as follows:

• When you press the power button, power is supplied to the relay, the contacts inside close, the coil turns on and the wiper gear motor starts working.
• Over the next 3 seconds, the bimetallic plate inside the device heats up, and the power from the electric motor of the VAZ 2107 windshield wipers is lost.
• After this, the panel cools down quickly enough and the wipers start working again.
• If the delayed operation mode is turned on, the main resistor distributes the electromotive force so that the delay necessary for the cyclic operation of the wiper is formed.

As you can see, the scheme is quite simple, and almost all repairs come down to replacing failed components with new ones, so you can do everything yourself.

VAZ 2107 windshield wiper malfunctions

Signs of faulty wipers are simple:

• when turned on, the windshield wiper does not work in one mode;
• When turned on, the windshield wiper does not work at all.

There are several reasons for breakdowns:

• switch is faulty;
• fuse burned out;
• poor contact in the electrical circuit;
• The windshield wiper motor is faulty;
• The VAZ 2107 windshield wiper relay does not work.

Note: often a blown fuse is only a consequence of another malfunction - damaged insulation in the motor power supply circuit or a malfunction of the motor itself, as a result of which it begins to consume increased current.