Where is the windshield washer relay located?

Windshield washer device

The washer unit consists of:

tank;
pump;
hoses for water supply;
water spray nozzles.

The most optimal location of the water nozzles is in a position in which the jet hits the middle of the windshield.

The pump in this system serves to pump water into the nozzles. There are modifications in which a motor (pump) simultaneously supplies water to both the headlights and the rear window.

Washer pump design:

motor;
impellers with blades;
brushes.

When a motor fails, it is usually not repaired, it is simply replaced. Usually there are problems with the injectors.

Washer fuse location

In different cars, the fuse blocks and the fuses themselves are located in different orders; there is no single standard so that the block is, for example, on the right and there is a certain order of which fuse is responsible for what. Find out the location of the block and a specific fuse, for example, when replacing the cigarette lighter fuse. Therefore, we will consider for specific brands and models of cars in the photo.

Washer: breakdowns

Signs of a broken washer system are simple. This:

if the motor works, but the liquid does not splash on the windows;
if when you turn on the washer lever, no reaction occurs (the motor does not hum).

Problems with a running motor are called mechanical. Problems with a non-working motor (pump) are electrical.

Let's look at what specific breakdowns occur in the mechanical part:

The fluid in the washer reservoir and supply hoses has frozen. To repair in this case, you need to put the car in a warm garage, start the engine and wait until the ice in the barrel melts.
The hose has become disconnected. There are cuts at the connection points on the hoses, cut off part of the hose until the cracks are removed and connect tightly with a clamp.
The washer fluid has run out. Top up. In the cold season - anti-freeze. In summer you can have water.
Partial pump failure. It happens that the pump shaft has turned. At the same time, it is working, the noise of the pump is heard, but it cannot pump liquid. It can be solved by replacing the failed mechanism.
The hose is cracked or bent. Replace if cut. Straighten it and make sure it is not pinched 90 degrees.
The holes in the water spray nozzles are clogged. Clean or install new ones.

So why isn't the washer working? Common Causes

Washer fluid level. In this case, everything is quite simple, we check the level of washer fluid in the tank, and then add it to the level if it is low, or continue to look for the problem.
The washer was frozen. With the arrival of cold weather, many people forget to replace the washer fluid, as a result of which it simply freezes in the tank. As a result, when you try to clean the windshield, nothing happens, the engine hums, and no fluid flows. In this situation, all the blame falls on you, since you did not timely replace the summer fluid with the winter one. You can correct the situation by heating it, or by adding 200 grams of alcohol or a special defroster to the tank.
Hoses. Damage to the fluid supply hoses or a simple hose slipping off the fitting may result in the washer not being supplied when pressed. You can check what's wrong by looking under the hood or driving into the inspection hole. If the hose is damaged it should be replaced, I guess that makes sense!?
Injectors. No, we are not talking about fuel injectors, but about those that spray washer onto the glass. Sometimes the washer nozzles become clogged or freeze, after which the operation of the system may be disrupted. It is quite simple to check whether the injectors are to blame for the fact that the glass washer does not work. We remove the supply hose from the washer nozzle fitting, then activate the washer and see if the fluid is supplied. If fluid flows through the hose, the injectors are most likely clogged. The “forces” become clogged with dirt, sand, rust, ice, and anything else. The solution to the problem is the following - either wash them or replace them.

Fuse. Sometimes the washer motor does not work due to a blown fuse. In this case, your task is to find the appropriate fuse and check its integrity. We replace the failed fuse and check the operation of the washer.
Wiring, terminals and contacts. Sometimes the washer motor (pump) does not work due to poor contact or a broken circuit. For example, the wiring may be damaged or the terminals of the motor itself may rust or oxidize, making it impossible to supply washer.
Switch. It is rare, but it still happens that the glass washer does not work precisely due to the fault of the button (switch) itself that activates the device. A multimeter or an electrician will help you understand what’s going on; we connect the electrodes and “call” the wiring and the button itself.
Motor (pump). If you do not hear any sound when you press the button, the washer pump may be faulty. This conclusion can only be made after you have ruled out all of the above options. The pump is checked using a multimeter or tester; for convenience, it is advisable to dismantle the device.

To prevent breakdowns, monitor the level and condition of the washer fluid in the future, and avoid oxidation of the terminals, as well as voltage surges in the vehicle’s on-board network. Change your summer washer fluid to an anti-freeze one in a timely manner, and choose only high-quality liquids, this is the only way you can avoid problems with the washer.

That's all for me. Write what malfunctions of the washer are known to you, as well as how you managed to detect the breakdown. Now you know the most common reasons why the windshield washer does not work, and if necessary, you will be able to independently determine the malfunction, as well as take measures to eliminate it.

Improvement for windshield cleaning

Refinement and improvement of the windshield, windshield and rear window washers significantly improve operation.

Improving the washer's performance is as follows: you need to buy a new reservoir with the ability to install one or more motors. There are tanks with recesses for two motors. Also, according to the material, there are soft and hard plastics, hard ones last longer and withstand ice (if the water or anti-freeze is frozen). Some people connect one motor to one injector. At the same time, the flow rate increases, but the pressure increases. In general, watch the video on modifying the washer.

This morning the water in the washer was already frozen! It started splashing, but the washer motor didn’t even hum... Option 2: the fuse or the motor died! This is the second time I've had this issue, so I was 99% sure it was a fuse! Changing it takes 3 minutes! Open the instructions on page 200

Open the fuse box in the engine compartment

We take out the one that in the instructions is number 40 A, in fact, it is the far right-upper one (if you stand in front of the car, in the photo, it turns out that it is the far left-upper one)) We put the new one at 15A (before that it was at 10, and the original one too, like 10)

Everything is working! It’s not a complicated matter) However, some go to stoshki or even to the OD to do all this and for some reason they take money from them normally, from the heart...

Price: 10 ₽ Mileage: 20,000 km

Why is the nozzle not spraying?

The washer pump fuse has blown. You can find out the location of the fuse link that protects the electric motor circuit from the repair and operation manual. Very often, on the plug covering the mounting fuse block, the manufacturer, using graphic symbols, indicates the number of the fuse link and the consumer whose circuit it breaks in the event of a short circuit. If you have to change the fuse frequently to operate the washer, there is a short circuit in the circuit.

Instead of a burnt-out insert, install only a fuse of the appropriate rating. Installing fuses designed for high current can result in a vehicle fire.

The pump has failed. A breakdown can be caused by blocking the rotation of the impeller wheel with dirt or corrosion. The power of the electric motor is not enough to rotate the armature shaft of the electric motor. In some types of construction, corrosion and dirt block the rotation of the motor armature.
The washer nozzle sprays poorly or does not spray at all, as the nozzle channel is clogged. The cause of the malfunction is corrosion of the channels inside the nozzle and debris entering the tank.
Motor circuit malfunction. Failure of the steering column switch, an open circuit due to damaged wires, or the formation of oxides on the terminals are the most likely reasons why the windshield washer does not work.
The hose has torn, broken, or jumped off the pump fitting. Carefully inspect the transition of the hose from the engine compartment to the hood, the secure fit of the hoses to the fittings of the injectors and washer pump.
The washer fluid in the reservoir has frozen.

Principle of operation

The windshield and rear window cleaning system is based on an electrically driven pump. The armature shaft of the motor is connected to a paddle wheel, which, when rotated, supplies washer fluid through hoses to the windshield washer nozzles. The sealing collar prevents washer fluid from entering the electric motor. It is the leakage that becomes the main reason why the windshield washer pump does not work. Water and glass washer fluid getting inside start the corrosion process, deteriorating the quality of the contacts and increasing the resistance to rotation of the pump armature.

A DC motor is used as a motor. There are at least 2 types of design:

the pump body is also the body of the electric motor, so permanent magnets are attached to it;
A separate motor is used, which is assembled and installed in the windshield washer housing.

In most systems, separate pumps are installed for different circuits. But in some cars, one electric motor can wash both the rear window and the windshield. In this case, the direction of fluid supply depends on the polarity of the voltage supplied to the electric motor. For variable supply of liquid in different directions, a check valve is used in the design.

Finding the cause of the breakdown

To determine the breakdown due to which the glass washer has stopped working, use the method of elimination.

Turn on the windshield washer (there is no need to start the engine, just turn on the ignition). Listen for a buzzing sound coming from where the tank is installed, indicating that the electric motor is turning on. If the motor hums, look for the cause of the failure in the hoses and injectors.
The electric motor does not turn on. Disconnect the pump connector. If there is enough space around the reservoir, the pump can be checked without removal. To check why the motor is not working, it is enough to directly supply power to its contacts from the battery. To do this, you will need two pieces of wire, one end of which is attached to the positive and negative terminals of the battery. Using the mating parts of the wires, briefly touch the terminals of the windshield washer motor. If there is no immediate reaction, apply voltage in a mirror manner (you can avoid this error if you first study the circuit diagram for turning on the pump on your car). If the motor works, the washer does not work due to problems in the control circuit. Otherwise, the reason is in the pump itself.

Circuit Diagnostics

The voltage is checked by a control. To test the circuit for a break, you will need knowledge of the rules for using a multimeter and the universal meter itself.

Turn on the ignition.
Attach one control pin to the part in contact with the unpainted part of the body.
Ask an assistant to turn on the washer or lock the steering column switch in the appropriate position.
With the second control contact, touch the pin of the pump power connector, which should have +12 V when the glass washer is running. The ground is checked in a similar way, only you need to move the control contact from the metal part to the positive terminal of the battery.

VAZ 2110

If the motor is working properly, but the washer does not work, then you will definitely find a lack of power or ground. Next, you need to study the electrical circuit and identify all the elements that affect the operation of the windshield and rear window washer. Use a multimeter in resistance mode to check the wiring. Start diagnostics from the sections of the circuit that are most accessible for diagnostics. When disconnecting the connectors, pay attention to the presence of oxides that negatively affect the operation of the windshield and rear window washer.