VAZ-2109: janitors do not work. Possible causes of the problem

Wiper blades (wiper blades) are designed to ensure proper cleanliness of the windscreen and rear window of the car. In good condition, with the support of washers, they can easily cope with dirt, snow and water. But if the janitors stop working, in the conditions of bad weather continue to move is not recommended. Your safety depends on it. It is better to stop and try to repair them.

. In this article, we'll talk about why the wipers on the VAZ-2109 do not work . We will consider the main causes of this malfunction, as well as ways to eliminate it.

The design of the wiper "nine"

, или работают не так, как должны, прежде чем приступить к их ремонту, нелишним будет узнать об устройстве стеклоочистителя в целом. If in your VAZ-2109 the janitors do not work , or they do not work as they should, before you start repairing them, it will be useful to learn about the wiper device as a whole. So it will be easier to identify the cause of the problem and then eliminate it.

The screen wiper is a device consisting of a drive (an electric motor with an extended shaft), a reducer and a system of levers called a trapezoid. It is she who activates the wipers themselves.

How does the wiper work?

At the front end of the electric motor rotor, a worm is cut, which engages and drives the main gear of the reducer. When the wiper is turned on, the motor voltage is applied to the vehicle's on-board circuit. At the same time, its shaft starts to rotate, activating the reducer. It, in turn, moves the levers, the ends of which are brought to the surface of the dormant body panel and are connected to the wiper casings. One of the ends of the reducer shaft is equipped with a special cam, which controls the movable contact of the wiper stop in the extreme position.

Windshield wiper control

The wiper is controlled with a special switch mounted on the steering column of the car. With the help of it, the wipers not only turn on and off, but they can work in different modes. This allows you to adjust the speed of the wiper blade, depending on the weather conditions. In cars VAZ-2109 there are three modes:

• intermittent;
• Constant with a low speed of wipers;
• Constant with a high speed of wipers.

лишь в одном из режимов, поэтому важно знать не только конструктивные особенности стеклоочистителя, но и механизм управления его работой. It often happens that VAZ-2109 janitors do not work only in one of the modes, so it is important to know not only the design features of the windscreen wiper, but also the mechanism for controlling its operation.

Intermittent operation of the wipers is activated in the first (working) and second position of the switch lever. Its operation is provided by a relay type 526.3747. It is located in the assembly block of the car and is marked on the electronic circuit as "K3". This relay also includes janitors when starting the windscreen washer and rear window washer.

In the third position, the cleaner works in a constant mode with a low speed of movement. To switch to a constant mode of wipers with high speed, the fourth position of the lever is provided.

Symptoms of a malfunction

To deal with the wiper breakage, let's look at what signs it can have.

Symptoms of the malfunction may be as follows:

• When you turn on the device does not react at all (the relay does not click, the electric motor does not work);
• The relay trips, but the motor does not turn on;
• And the relay, and the motor work, but the brushes do not move or move in the wrong direction;
• ; The intermittent mode of the VAZ-2109 janitors does not work ;
• The motor in intermittent mode does not stop;
• The janitors work slowly.

And now we will analyze each of the characteristics separately in the context of possible faults and ways to eliminate them.

The wiper does not respond to the on or switch modes

, а при переключении рычага не слышно ни щелчков реле, ни звука работающего электродвигателя, причина может крыться либо в переключателе, либо в реле, либо в предохранителях. If you are trying to turn on the wiper, but your VAZ-2109 wipers do not work , and when you switch the lever, you can not hear the click of the relay or the sound of the motor running, the cause can be either in the switch, or in the relay, or in fuses.

In this case, first check the integrity of the windscreen wiper. It is located in the mounting block and is designated as F5. You can check it with a multimeter included in the tester mode. Next, go to the bimetallic fuse installed in the reducer of the cleaner. в зимнее время, причина может быть именно в нем. If the wipers stopped working on the VAZ-2109 in the winter, the reason may be in it. This fuse was completed with the latest modifications of the "nine". Its role is to protect the cleaner motor from overheating in cases where brushes are primed to the glass. Check it with the same multimeter, included in the tester mode.

Next, go to the relay. As already mentioned, it is located in the assembly block and is designated as "K3". We find the relay, remove it from the seat, and in its place we place a known-good interrupter. Check the operation of the windshield wiper. If it works, we buy a new relay. If everything remains unchanged, we continue troubleshooting.

As for the switch itself, it is very difficult to check its operation independently. It has a fairly complex design, so it is also easier to replace it with a known worker, rather than trying to repair it. , можете быть уверены, что проблема именно в подрулевом переключателе. By the way, if you do not work wipers and turn signals VAZ-2109 , you can be sure that the problem is in the steering wheel paddle switch.

The relay trips, but the motor does not start

Having found such a sign, it can be assumed that any of the above-mentioned fuses or the electric motor itself has failed. We check the fuses with a multimeter. If they are all right, open the hood and inspect the trapezium for deformation or presence of an object in the construction. In winter, it is possible to freeze the wiper blades against the windshield. в морозную погоду, первым делом проверьте их состояние. This phenomenon is accompanied by similar symptoms, so if the VAZ-2109 wipers do not work in frosty weather, first check their condition.

If the trapezium is in working order, and the wiper blades are movable, you will have to remove the electric motor for diagnosis. To completely eliminate other malfunctions, after dismantling the motor, connect it directly to the battery terminals. Earned - look for the cause in the electrical circuit, no - please contact the auto electronics.

The relay and the drive motor operate, but the wipers do not move or move in the wrong direction

It often happens that when the wipers are turned on, all elements of the windshield wiper work in the normal mode, but the wipers remain immobile or move along the wrong path. This is a sure sign that the slots on the levers of the trapezium have become worthless. A similar problem is solved by replacing the levers. In extreme cases, you can try to tighten the nuts of the janitor wings, pressing them harder to the tips, but over time the malfunction will declare itself again.

Intermittent mode is not activated

, соответствующее прерывистому режиму, попробуйте перейти в постоянный медленный или быстрый режим. Turning on the windshield wiper and finding that the first position of the VAZ-2109 janitors does not work , corresponding to the intermittent mode, try to switch to a constant slow or fast mode. If in other positions the wipers work normally, go directly to the relay. Replace it with known good.

The motor in intermittent mode does not stop

The intermittent mode differs from the others in that at the end of each cycle the wipers make a stop in the initial position. This is achieved by the movement of the cam located at the rear end of the reduction gear shaft. It closes and opens the movable contact of the windshield wiper end switch . Violations in the work of janitors in intermittent mode are usually associated with its malfunction: wear, damage. Also, the problem can be in the switch plate or in its contacts.

The cam can easily be replaced by yourself. As for the plate and contacts, then, if necessary, they simply need to be bent.

Wipers on VAZ-2109 are working slowly

The reasons for the decrease in the speed of movement of brushes are:

• Low temperature of air;
• Wear (licking) of the splines connecting the levers and the janitor's bodies;
• Malfunction in the motor.

In the first case, the wipers can move more slowly than usual due to the solidification of the grease on the gears of the reducer. As a rule, when the vehicle warms up, this problem disappears.

When the splined joint is worn, the brushes can also move more slowly by turning the tips of the levers in their seats. This problem is solved by replacing worn out items.

If these measures do not bring the desired result, we remove the electric motor and send it for repair.

Does not work rear wiper VAZ-2109

The VAZ-2109 has another janitor. It is located on the rear door glass and has a self-contained drive. The wiper is driven by a separate electric motor with a small reducer. You can get to it from the inside of the door by removing its skin.

The malfunction of the rear wiper may also be associated with both the switch problems and the malfunction of the motor itself. Most often it stops working:

• In connection with the violation of the normal contact in the connector;
• Breakage of the supply wire;
• Breakage of the electric motor or its reducer.