In this short but succinct post, we talked about where the wiper relay is located on a VAZ 2107, how to replace it, and also listed other possible reasons for windshield wiper failure. behind the instrument panel , on the left side, next to the turn signal relay, is responsible for the operation of the windshield wipers on the seven
VAZ 2107 fuses and relays, electrical diagrams
Often when operating a VAZ 2107 we encounter electrical problems. At one point, one of the electrical appliances, such as a stove or low beam headlights, refuses to work. Dimensions, cigarette lighter, turn signals and other components of the vehicle's electrical circuit may also stop working without warning.
To find the cause of the malfunction, you first need to understand whether voltage is supplied to a particular device and check the fuses and relays of the VAZ 2107. The most important thing in the circuit is the fuse. It protects the device from overloads and failure. If there is any short circuit or if the current in the circuit increases significantly, the fuse will blow. Therefore, first of all, let's open the hood of the car and check the fuses.
Lada "Niva"
- Dashboard Niva Chevrolet
- Replacing side and turn lamps
- Replacing dashboard light bulbs Niva Chevrolet
- Removing the VAZ-2121 stove motor
- Making a Jeep out of a Niva
- Fuse box Niva Chevrolet
Fuse box VAZ-2107
The VAZ-2107 fuse box is located in the engine compartment, to the right of the engine (if you look in the direction of travel of the car). It contains the main fuses and relays. To check whether any of them have burned out, you need to open the hood and the plastic cover of the block, on which the names of the fuses and their nominal values should be indicated.
R1 - relay for turning on the heated rear window . If the heating does not work, check this relay, as well as fuse F5, replace the burnt or faulty ones. If the relay and fuse are working, check the contacts for connecting the wires to the heating strips on the rear window (on the side closer to the side doors)
R2 - headlight high beam relay . Works in conjunction with fuses F12 and F13. If only one headlight does not shine on high beams, most likely the problem is in the lamp, which is time to be replaced or in fuse F12 or F13 (right/left headlight, respectively)
R3 - headlight low beam relay . Works in conjunction with fuses F16 and F17. If the low beam does not work in both headlights, it is most likely the problem with this relay. First of all, replace it with a working one. If it doesn’t help, both lamps could have burned out (this happens) or their fuses.
1 — connector for the relay for turning on the headlight cleaners and washers . If your car does not have these devices, then the presence of a relay is not necessary.
2 — connector for the horn relay . In the figure, a jumper is installed so that the sound signal works without this relay.
3 — connector for the cooling system fan motor relay . In the figure, a jumper is installed so that the fan operates without this relay. Be careful with this connector. Failure to contact the jumper in the absence of a relay can cause the fan to fail, and this can lead to overheating of the coolant and, accordingly, the engine. When the first signs of overheating appear (according to the temperature sensor and boiling of the liquid), turn off the engine as soon as possible.
4 — tweezers for replacing fuses 5 — spare fuses 6 — tweezers for replacing relays
Try to always have spare fuses of different ratings, so that if they blow out on the road, you don’t have to look for the nearest car shop.
Trouble-shooting
Poor quality of glass cleaning is usually associated with wear of the cleaning tape, as well as contamination of the hinges in the frame brushes and limited mobility of the rocker arms. The easiest way to solve this problem is:
- In frame brushes, the cleaning tape is changed. The brushes must first be dismantled, the worn element removed, a new one installed in its place, secured with steel plates and the brush secured to the lever.
- Frameless brushes are replaced entirely.
Sometimes the tape is in good condition, but the brushes leave streaks because the grooves that hold the tape are clogged. In this case, they should simply be cleaned. If the metal frame is covered with rust and the rocker arms have lost their mobility, it is better to replace the brushes entirely.
Cleaning tape is inexpensive, but some motorists are in no hurry to change it. You can restore the elasticity of the tape by dipping it in gasoline and washing it with a warm soapy solution; after this procedure, it is useful to coat the tape with silicone grease. Traces of grease are easily removed with white spirit. A worn, rounded edge can be smoothed out using fine-grit sandpaper glued to a hard base.
Slow movement of the wipers may be due to:
- With wear of the gear motor. It must be disassembled, cleaned, lubricated, and if critical wear occurs, replaced.
- With corrosion, contamination, insufficient lubrication of moving joints. The entire mechanical part is dismantled, disassembled, cleaned, and lubricated.
- With an error made during the installation process that needs to be identified and corrected.
Incorrect assembly can also cause the wipers to not return to the park position. Another reason for this problem is wear or breakage of the drive splines, in which case they need to be replaced.
Problems in the operation of the electric motor can be associated with both its breakdown and mechanical problems. If the gearmotor itself is damaged, it is best to replace it entirely. But if the problem can be fixed by replacing the damaged gear, cleaning the dirty manifold, and adjusting the limit switch, replacement can be avoided.
If the engine does not turn on, you need to inspect the power wires, winding wires, commutator, brushes, as well as the steering column switch, which includes a wiper switch.
- Damaged power wires are replaced with intact ones, oxidized tips are cleaned.
- A failed switch is replaced.
- A dirty collector can be cleaned, the internal cavities can be blown out and the surface can be sanded.
- If the collector burns out, it is better to replace the gearmotor.
- Replacing the gearmotor is also recommended if the winding wires are broken, although only the armature can be replaced.
The engine shutdown due to the fuse tripping may be caused by a short circuit in the winding; in this case, the gearmotor must be replaced. But quite often, an emergency shutdown is associated with the locking of the brushes due to their freezing to the glass, deformation of the levers, or the entry of a foreign object into the mechanism. In this case, the cause must be eliminated. Frozen brushes are carefully separated from the glass using a scraper so as not to damage the cleaning edge, but it is better to wait until it thaws. The mechanism is cleaned of dirt and foreign objects that hinder its operation. Deformed drive elements are leveled, and if the deformation is severe, they are replaced with new ones. After eliminating the cause of the fuse tripping, the blown disposable fuse is replaced with a new one, and the thermobimetallic fuse can be used again.
Intermittent purifier problems are most often caused by a damaged relay or switch. If the brushes move intermittently without pauses, and everything is in order with the relay, the limit switch may not operate. In this case, you need to adjust it, bend the contacts or the spring plate, which the gear cam bends. It is also possible that the limit switch contacts are dirty and need cleaning.
When the brushes do not move when the engine is running, the problem lies in the gear motor gear; it is necessary to inspect the gear itself and the crank on its axis:
- if the gear teeth are broken, it needs to be replaced;
- If the crank fastening is loose, you need to tighten the nut to the limit.
VAZ-2107 fuses
F1 (10 A) - lamps in the reversing lights, heater (heater electric motor), heated rear window . If your reverse light does not work, check this fuse, then the lamp itself, and it may also be the reverse light switch (on the rocker or gearbox). If the heater does not work, but this fuse is intact, the fault may be in the wiring or in the heater motor itself, as well as in the switch on the panel.
F2 (10 A) - electric motors for windshield wipers, headlight cleaners, windshield washer pumps and headlights . If the wipers or washer do not work, check this fuse and connector 1 for the relay. A relay or jumper must be installed in it. It could also be the wiring or the wiper motor itself.
If the windshield washer does not work, check the fluid level in the washer reservoir. In winter, poor-quality or untimely replaced fluid can freeze in the washer system pipes. The washer nozzles may also become clogged. Or the issue may be in the pump itself (located in the washer reservoir), if, for example, it has already served its purpose or was often turned on without windshield wiper fluid.
F3 (10 A) - reserve
F4 (10 A) - reserve
F5 (20 A) - rear window heating element and relay contacts for its activation . If the rear window heating does not work, also check relay R1. If the relay and fuse are working, check the tightness of the connection on the contacts of the heater and the integrity of its elements (no breaks).
F6 (10 A) - cigarette lighter, clock . If the cigarette lighter does not work and this fuse is intact, the problem may be in the contacts of the connector itself. Disassemble the panel with the connector to access the contacts and check their condition.
The principle of operation of the drive, engine and other mechanism components
If the circuit and design of the windshield wiper do not raise any questions, let’s move on to the next point - the principle of operation. The windshield wiper holder, together with the blade mounted on it, moves left and right, which allows you to almost completely clean the windshield. As stated above, using the switch, the driver can adjust the speed at which the wiper blade holder will move. Some modern cars are equipped with hidden cleaners. In this case, the windshield wiper mechanism is installed under the windshield, and when the driver needs to turn on the wipers, the device pushes up this mechanism, which, after being turned off, “hides” back.
In general, windshield and rear window cleaners are almost identical products, but there are differences in their operation. For example, the windshield wiper blade holder can only operate in one mode, without the possibility of adjustment. That is, if the front wipers are part of a whole system that includes many elements and a control unit, then the rear wiper has only one function. One of the main components of the washer is a pump designed to activate the system’s electric motor.
Fuse and relay block VAZ 2107
When diagnosing electrical faults, it is very convenient to use a multimeter. Using it, you can ring any connections and devices to check their functionality. If you know how to use it and have at least minimal knowledge of electrical engineering, I think it will not be difficult for you.
Drivers of the “Seven” are aware of the problem with the operation of the windshield wiper, which does not consist in frequent breakdowns, but in the fact that the cyclical movement of the wipers makes them nervous. But, more on that a little later. In general, the relay plays a very important role, and such a role appears only in rainy weather. After all, the operation of wipers is impossible not only without power, but also without a regulator. It is the relay that performs this function, which provides great convenience during bad weather. But this is not the only function of this device, however, this is described below.
Typical glass cleaner malfunctions
Malfunctions in the operation of the windshield wiper may be associated with a breakdown of the gear motor, relay, switch, as well as wear or deformation of mechanical parts. The most common problems that arise are:
- the electric motor does not turn on (the characteristic noise accompanying its operation is not heard);
- the operation of the electric motor stops due to the fuse tripping;
- the engine does not go into intermittent or wash mode;
- in intermittent mode, the brushes move without stopping;
- pendulum arms and brushes do not move when the gearmotor is running;
- wipers move too slowly, with difficulty;
- brushes do not return to their original position;
- The brushes move, but the cleaning is unsatisfactory.
What is a windshield wiper relay and its purpose?
Let's start with the fact that the wipers on the VAZ-2107 are driven by a 12V DC electric motor. But the engine alone would not be able to provide such pendulum operation of the wipers. In addition, such an electric motor has high power, and therefore a considerable amount of direct current. To reduce the current in the windshield wiper switching circuit, a relay of type RS-514 is installed, which also performs the function of periodic operation of the wipers. The VAZ-2107 car has two modes of movement of the wipers - without interruption, and at intervals of four seconds.
Tensioning the alternator belt on a VAZ classic with “two fingers”
This modification was trially implemented on the injection classic VAZ-2107, but will also fit any other classic, regardless of the model and type of engine. At one fine moment on a frosty winter morning, I noticed that the voltmeter on the dashboard refused to show normal battery charging and the car made a characteristic whistle when driving, this whistle cannot be confused with anything - the generator belt was whistling! The wretch's tension loosened. That same day I went to a service station, two oily car mechanics, using a crowbar, a crooked cardan wrench and such and such a mother, tightened the belt...
VAZ CLASSIC Maintenance
Wiper relay functions
Windshield wipers operate thanks to an electric motor that supplies 12V voltage. But this is a very large power, implying a significant amount of constant current. Specifically, to reduce the constant current in the electrical circuit, a relay of the RS-514 format is installed, which regulates the frequency of movement of the wipers. The VAZ-2107 car is equipped with 2 variations of windshield wiper movement - one is possible without a break, the other has a pause of 4 seconds.
The windshield wiper relay on the windshield in a VAZ- 2107 , namely where it is located, is of interest to many car owners; otherwise, repairing windshield wipers in some cases becomes impossible. So, the mechanism is located under the dashboard on the left with the orientation towards the driver’s seat. The fasteners are made directly to the body of the VAZ-2107; 2 screws located under the upholstery act as reliable fasteners. When examining the relay, you can see that there is a wiring coming to it, at the end of which there is a plug for connecting the device.
The connector, which is responsible for connecting the plug, is located on the panel with devices near the headlight hydrocorrector control. To carry out repair work, you need to get it from below. If you doubt that you have selected the correct plug, unplug it and check that the windshield wipers are working.
If the lever is in position 1, but the wiper does not work, the mechanism is not turned on.
Replacing the VAZ classic wiper relay
Fixing wiper
on Classic.
New model fuse and relay block (mounting block) VAZ 2104, 2105, 2107 AVAR (402 and 404)
Review of new model mounting blocks for VAZ
2104, 2105,
2107
produced by AVAR 402.3722 ...
Where does which wire go, or just a diagram
Connecting wipers and washer
“Plus” power is supplied from the ignition switch through fuse No. 2 at 10 Amp of the mounting block. The permanent “plus” goes along the black and yellow wires to contacts “4” of the connectors of the gear motor and the steering column switch. It should not disappear even when the switch is in the “off” position. The blue wire supplies “+” 12 V power to the motor when the switch is in the “continuous mode” position. On the blue-white wire, in the “off” position there should be a “minus”, and in the “continuous mode on” position the “minus” is turned off. This is done to slow down the motor when the power to the closer is turned off.
The red wire supplies the relay with “+” 12 V from the switch when the intermittent mode is turned on. At the moment of operation, contacts “2” and “4” close, and “1” and “3” open, the motor starts working and the brushes make one or two movements. Then “+” 12 V is turned off, and contacts “1” and “3” are closed to each other and to “minus”. The motor stops for a few seconds and then the cycle repeats.
The washer pump motor is connected to “+” 12 V constantly with a black and yellow wire through the same fuse No. 2. “Minus” is applied when you press the windshield wiper lever from bottom to top.
Video about how a windshield wiper works
What does the windshield wiper relay consist of?
The wiper relay looks like a box, painted dark, to which a 15 cm long wire is connected. If you begin to disassemble it, inside you can see an electronic board where the electronic components are located. They are assembled and connected to each other, taking into account the circuit developed by the designers, this circuit just keeps the wiper relay in working condition.
For better understanding, let’s look at the windshield wiper relay device piece by piece:
- Electric coil.
- Microscopic controller of HP37 format.
- Capacitor.
- Resistor.
There are also several resistors, but they are not as important as the main one, located near the controller in the right corner of the device at the bottom. The board includes 4 connected wires that transmit signals from the VAZ-2107 wiper regulator.
Selection of brushes
When choosing wipers, you must be guided by the following criteria:
- Length. One of the main indicators - length - is selected in accordance with the car model or taking into account the size of the already installed product.
- Method of fastening products. If the fixing brackets do not match, you simply will not be able to install the products.
- Quality is an equally important criterion. The better quality the products are, the longer they can last.
As practice shows, high-quality products always cost more, and experts advise not to skimp on purchasing products, since they directly affect visibility. We recommend selecting wipers according to the make of the car, as this will allow you to most accurately select the required size.
In addition, it is best to choose products in accordance with the season - they can be both summer and winter. It should be taken into account that winter versions are equipped with special blades that do not freeze or freeze in the cold. Depending on the situation, you can not completely replace the product, but only one blade, of course, if the remaining elements of the leash are in good condition.
How does the wiper relay work?
The wipers installed on the windshield of the VAZ-2107 work thanks to the coordinated operation of an electric motor, relay, fuse, switch and 12V power supply. After current is supplied to the electric coil when the windshield wipers are on, the moving armature is automatically connected, then the winding and, finally, the closing contacts located below and above.
What happens next:
- The anchor is pulled to the middle, which allows you to separate the contacts at the top and combine the contacts at the bottom.
- First, the coil has a bracket equipped with a bimetallic panel wrapped with a narrow wire, which transmits the current.
- The current helps heat the panel, after which it opens the contacts.
- After some time, the panel cools down completely and takes its previous position.
- When the contacts open, the EMF is adjusted in the coil.
- To suppress the electromotive force, a resistor rated at 62 kOhm is built into the mechanism.
The functioning diagram of the wiper relay in the VAZ-2107 looks like this:
- After power is applied to the relay, where the contacts close when the coil is activated, the electronic motor receives power and begins to work.
- After a maximum of 3 seconds, the panel made of bimetal heats up and turns off the power supply from the VAZ-2107 engine.
- When the wiper blades return to their normal position, the panel cools down and starts working again.
- The main resistor, which divides the homing EMF, forms the delay required for a certain periodicity of the wipers.
How to replace the wiper relay
In most cases, to eliminate breakdowns associated with wipers, car enthusiasts have to replace the relay. How to change the relay so that the windshield wiper located on the windshield of the VAZ-2107 works again?
- Disconnect power.
- Unscrew 2 screws.
- If the plug is difficult to remove from the socket, you can pry it up with a screwdriver.
All that remains is to install the newest part and connect it.
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