Connecting the cooling fan VAZ 2107 injector. Diagram of connecting the cooling fan VAZ. Features of the cooling system in different modifications

The VAZ-2107 cars, over the years of their release, were installed, both carburetor and subsequently, injection engines. Therefore, electrical circuits Voltage supply to the motor cooling fan fan motor, differ from each other.

On injection Engines of the VAZ-2107, two fan contact sensor, which stands in the upper nozzle, when raising the temperature of the coolant above the one on which it is calculated, it should signal to the ECU. The electronic unit Control, analyzing a signal, through the relay includes a fan.

Therefore, the search for the causes does not turn on the fan, start with the removal of the connector from the sensor, when the ignition is turned on. If the fan itself is good, then it must earn. By inserting the load in the terminal of the connector, in the form of a bulb, the fan must stop. Thus, you check the electrical circuit of the fan motor. In this case, it will be proper, and the fan sensor will have to be replaced. True, it should be noted that on sale, there are not substandard sensors that, when installing on the engine, also will not work.

If after removing the connector from the sensor, the fan did not earn, then its performance must be checked by connecting it directly to the battery. Experimental options, only two. If the fan works, you will have to check the performance of the fuse that protects this chain, the fan relay and the computer. And if the fan does not work, it will have to check the condition of its brushes, for their wear.

On carburetor engines VAZ-2107 car, in the electrical circuit of the fan turning on the fan there will be no computer, and some "seven" do not even put the fan power relay. Therefore, find the reason why the fan is not included in the work is much easier and many cars of VAZ-2107 cars can cope with it.

VAZ 2107 is equipped with an electric radiator cooling fan. It automatically turns on when the coolant is heated to 90 degrees and in normal conditions provides a stable engine temperature regardless of air temperature and movement mode.

But there is one problem. Sometimes the relay (sensor) of the fan is broken and vAZ 2107 radiator fandoes not start. As a result, the engine overheats and the case, at best, is limited to boiling and leakage of coolant, and at worst - overhaul Engine. To avoid problems, you can improve the design by organizing the forced blowing of the radiator. There are two ways to do this: mechanical and electric.

Mechanical forced cooling of the radiator VAZ 2107

On the old VAZ models, the radiator was cooled using an impeller struck on the water pump rotor. Such a solution provided a constant blowing of the radiator when the engine taken. Considering that the design of the VAZ 2107 differs little from the "precursors", to establish such an impeller will not be difficult.

The advantage of such a solution is reliability. Forced mechanical blowing of the radiator ensures that the car does not boil, standing in a traffic jam on a hot day. But at the same time, the efficiency of blowing on small revolutions is reduced in comparison with the electrical blowing. In winter, another lack of forced cooling is manifested - cold Engine Additionally, blown by the fan, which slows down his heating. The fact that the fan blows the radiator on the cold engine, does not affect the heating rate under the condition of the working thermostat. The fact is that until the engine is heated, the coolant circulates over a small circuit, bypassing the radiator.

Mechanical drive of the cooling fan VAZ 2107 can be improved:

• Install the diffuser guiding the air flow through the cells of the radiator. This will improve cooling efficiency.
• Shoot the radiator a little back, closer to the impeller. To do this, you can tilt its upper part, using hard steel planks for fastening. The planks should be calculated so that the distance between the radiator and the impeller was about 2040 mm.

In this way, you can protect the car from overheating.

Electric radiator cooling fan (forced)

To break the VAZ 2107 fan sensor fails, you can organize forced cooling Without replacing the regular electrical fan with an impeller, worn on the pulley of the pump. To do this, it is enough to provide the backup power on the fan with the button. Supports such details and materials:

You will also need a new fan sensor if the old is faulty. Control can be checked by an omeme or a ring. If, when the bottom of the radiator is heated, the fan does not turn on, it must be changed.

First you need to reduce the current passing through the contacts the heat relay controlling the inclusion of the fan. For this, the flow chart of the VAZ 2107 fan must be changed so that it is not used directly from the sensor, but through the additional relay. In this case, the contacts of the fan sensor (thermostar) will not be burned, and in case of failure of an additional relay, the latter will be replaced much easier.

You must also connect the fan's power button so that when turned on it duplicated the sensor, feeding the voltage to the relay coil when turned on. In this case, when the sensor breaks, you can manually turn on the cooling fan of the VAZ and protect the engine from overheating.

Improving the cooling system with an electric fan

To improve cooling, it is possible to replace the standard cooling fan of the VAZ 2107 to more powerful and perfect. In this capacity, fans from "Kalina" or "Priors" are suitable. A fan with eight blades is especially effective, providing a particularly strong air flow.

It is worth considering that the cooling system of the VAZ 2107 is originally designed for efficient operation. If it does not cope, the reason lies not in an ineffective regular battery, but the raised cools of the radiator or the lack of coolant in the system. Therefore, in the case of overheating of the engine with a fan running, it is worth checking the coolant level and clean the coolant of the radiator (or replace it).

This article will describe in detail about the forced fan of the VAZ 2107. It is possible to distinguish two types of such a design - electrical and mechanical. Any owner of the seven begins to regret that in the summer in a traffic jam, he suddenly fails the fan switching sensor. After such a case, as a rule, they begin to think about improving the design. And it is possible to make upgrades in several ways.

The first method is forced cooling of the mechanical type

Perhaps you can call it so much. Recall the first cars of VAZ 2101-2107, which did not use electrical fans. In them, blowing the radiator was due to the impeller, screwed to the rotor of the pump. The same, the fan can be installed on the VAZ 2107 injector. The design of the cooling system is not very different.

But you need to immediately say about some features of this design. The fact is that even in the winter the radiator will be blown in the air flow. This reduces the engine temperature, so in the cabin can be quite cool. Summer is good - the motor is always cooled, the fan constantly works, Tosol does not boil.

But take another two small improvements and summer exploitation will be just a fairy tale:

1. Put a plastic diffuser, which will send the air bundle into the cells of the radiator.
2. The upper part of the radiator must be installed a little closer to the impeller blades. Fasteners make small rigid metal straps. Try to make the distance from the surface of the radiator to the impeller turned out to be in the range of 2-4 cm.

These are minor tricks will help you improve the cooling of the VAZ 2107 engine. The issue price is literally meager - no more than 80 rubles (it is so much an impeller worth).

The method is second - electric

If you have new car, Injector and electric fan are installed, is it worth it to spoil it with a forced impeller? Somewhat wisely will leave the electric fan, but to make a backup way to turn on using the button. In the store, purchase several elements and materials:

1. A new sensor (if the old has become unusable).
2. Electromagnetic relay with normally open contacts.
3. Red wire with a cross section of 0.75 square meters. mm.
4. Button to install in dashboard VAZ 2107 (preferably with backlight).
5. Heat shrink insulation.
6. Mom connectors and a block for a relay.

The diagram of the connections is shown in the photo. The first thing turns off the fan and change its switching sensor. Then collect the scheme.

Please note that the new cars use sensors capable of switching very large currents. But despite this, they are still burned. Slow loads still quickly bring it out of order. What to do? The output one is to reduce the current on the sensor outputs. To do this, enter the electromagnetic relay into the scheme. Now the chance of failure is reduced. But it becomes higher than the chance of failure of the relay. True, it will be easier to change it.

Install the forced switching on the fan in the dashboard and extend two wires from it - one can immediately connect with the "mass", and the second is to output the sensor. It turns out that you have the contacts and the sensor contacts are connected in parallel. Therefore, if the sensor fails, you can turn on the electromagnetic relay with the button.

Method Third - Perfect Fans

To improve the cooling of the VAZ 2107, it is possible to use more modern instead of the standard electric fan. Those who put on cars "Kalina" models, Priora are perfectly suitable. Eightly well, an electric fan with eight blades will work. The air flow from it will be much stronger, therefore, the cells of the radiator are cool faster.

You can even get involved in improving cooling and put two such fans. But is there any point in that. It is better to completely clean the cooling system from the inside, to replace all the nozzles, put the pump with an improved impeller. And in completion, change the radiator. It will be much more efficient than to make a huge "collective farm" around the radiator.

All major power grids and modifications of the connection of the cooling fan (C) fluid in VAZ vehicles of various models are given. What is the essence of work in? Electrical engine With the impeller on the shaft, installed inside a rectangular metal frame, with which it is attached to the back of the radiator. When the voltage is submitted (12 V) to the drive contacts, it starts to work, rotating the blade and creating a directional air jet, which, in fact, cools the toosol or antifreeze.

If the cooling fan does not work, do not hurry to contact the car service. Install the cause of the fault can also be independently. Especially since it is not necessary for this to have special skills - just examine the reference material from website And follow the instructions for checking / replacement.

Inclusion scheme of the cooler VAZ 2104, 2105 and 2107

1. radiator fan
2. temperature sensor (located on the radiator below)
3. mounting block
4. ignition relay
5. egnition lock

A - to the contact "30" of the generator.

Electrical fan Cooling VAZ 2106

1. motor power sensor;
2. fan electric motor;
3. electric motor switching relay;
4. main fuse block;
5. ignition switch;
6. additional fuse block;
7. generator;
8. accumulator battery.

Connecting fan 2108, 2109, 21099

Until 1998, there was a relay of 113.3747 on cars with an old mounting unit of fuses 17.3722 (finger fuses) in the fan chain 113.3747. After 1998 there is no relay.

Also, until 1998, the TM-108 switching sensor was used (the temperature of its contacts 99 ± 3ºС, opening 94 ± 3ºС), after 1998, TM-108-10 with similar temperature ranges or his analogs different manufacturers. The TM-108 sensor operates only in a pair with a relay, reinforced under the high current TM-108-10 can work with both relays and without it.

Motor cooling fan switching circuit on VAZ 2109 with mounting unit 17.3722

1. Electric motor fan
2. Motor power sensor
3. Mounting block
4. Ignition switch

K9 - switching on the fan electric motor. A - to the "30" generator's conclusion

Engine cooling fan switching circuit on VAZ 2109 with mounting unit 2114-3722010-60

1. Electric motor fan
2. Motor Inclusion Sensor 66.3710
3. Mounting block

A - to the "30" generator's conclusion

Inclusion scheme in VAZ 2110

The circuit for switching on the cooling fan VAZ 2110 on carburetor and injection vehicles is different. On cars S. carburetor Engine, This uses the thermobimetallic TM-108 sensor, and on cars with injector Engine Management performs the controller.

Scheme at 2113, 2114, 2115 Injector and carburetor

Where is the fan relay

4 - relays of the electric fan;
5 - electric rigs;
6 - Main relay (ignition relay).

Attention: the order of relay and fuses can be arbitrary, focus on the color of the wires. Therefore, we find a relay from which a thin pink with a black strip wire, which comes from the main relay (contact 85 *) (not to be confused with a thin, red with a black strip with a wire that goes from the controller) and a thick power white with a black strip wire (contact 87) (White and pink wire you need), this is the fan relay.

If the cooling fan does not work

Electric motor installed for fan drive direct current with excitation OT permanent magnets ME-272 or similar to him. Technical data of the electric fan and fan power sensor:

• Rated rotation frequency of the electric motor shaft with impeller, 2500 - 2800 rpm.
• Consumed electric motor current, 14 A
• Camping temperature of the sensor contacts, 82 ± 2 degrees.
• The operating temperature of the sensor contacts, 87 ± 2 degrees.

The cooling system fan may not be included due to:

• malfunction of the electric drive;
• distilled fuse;
• defective thermostat;
• failed the thermal sensor to turn the cooler;
• faulty relay in;
• wiring cliff;
• faulty plugs of the expansion tank.

To check the electric motor itself, the VAZ fan is applied to its conclusions 12V rechargeable battery - Competitive motor will earn. If the cause of the problem in the fan, you can try to repair it. The problem usually lies in brushes or bearings. But it happens that the electric motor fails due to a closure or cliff in windings. In such cases, it is better to replace all the drive.

Fuse in is in mounting block motor compartment car and has the designation F7 (20 A). Checking is performed using a car tester included in the probe mode.

1. In a car with a carburetor motor You need to check the sensor - turn on the ignition and close the two wires to the sensor. The fan must turn on. If this did not happen, the problem is definitely not in the sensor.
2. For injection cars It is necessary to warm the motor to operating temperature, and disconnect the sensor connector by turning it off from the onboard network of the machine. In this case, the controller is obliged to start the fan in emergency mode. The electronic unit perceives it as a failure in the cooling system, and causes the fan drive in constant mode. If the drive started - the sensor is faulty.

Replacing the electric fan in auto

1. We put the car on a flat surface, immobilize its parking brake.
2. Open the hood, turn off the minus terminal.
3. Key on 10 unscrewing the casing mounts air filter.
4. A screwdriver weakening the air duct clamp on the air flow sensor and remove the corrugation.
5. We unscrew the screws that lock the air filter housing cover, remove the filter element.
6. The key to 8 unscrew the mounting of the air intake and dismantle it.
7. The key is 10, then by 8 unscrew the nuts fastening the fan casing around the perimeter (only 6 pieces).
8. Turn off the wiring block on the fan connector.
9. Carefully remove the fan casing along with the drive.
10. The key on 10 we unscrew 3 bolts holding the electric motor on the housing.
11. We put on his place new.
12. Install the design in place, fix, connect the connector.
13. Further installation we produce in the reverse order.

Modernization of the control scheme

The cooling fan on the top ten is turned on at a heating agent 100-105 ° C, while the normal working
The engine temperature is 85-90 ° C, the fan turns on when the engine is overheated, which naturally affects negatively.

This problem can be solved in two ways: set the inclusion temperature in "brains" or make a button. We will focus on the second. Turning on the fan from the button is very convenient: I got into the plot - turned on, left - turned off, and no one overheating.

In the cabin, a fan mode selection button was installed (disabled constantly, permanently turned on, the inclusion automatically by means of the sensor) - this "tuning" is not mandatory, but it will be a very useful addition.

On the contacts of the relay 87, 30, on the wire from the battery to the fuse and the mass of the fan there will be a high current and therefore it is necessary to use the wires, the cross section of at least 2 mm otherwise it will not endure and burn.

Video - Connection and verification in

On the old models of cars VAZ "Classic", the cooling of the radiator was forced. That is, the cooling fan worked directly from the water pump, and led it in the motion of the generator belt. But at later releases, such as VAZ 2107, began to install the electric fan, which was triggered from the temperature sensor, if it reached up to 100 degrees.

It happens not often, but it is possible that the fan motor can burn. In this case, it is quite problematic and expensive to repair it, therefore most of the car owners prefer to replace the radiator cooling fan entirely. How to do with the smallest costs, you can read in the article that I wrote specifically on the example of my car.

For this repair, you will need some tool, the list of which I led below:

1. little head for 10 mm
2. small extension, order 10 cm
3. ratchet handle (for more convenient work)

Please note that if any work with electrical equipment, you must turn off at least a minus terminal from the battery.

After that, we turn off the power plug from the fan, as shown in the photo below:

Now disconnect the wires going to the temperature sensor:

With the help of a ratchet and head with the extension, it is necessary to unscrew the upper bolt of the construction of the structure, see the photo below:

And one more from the bottom side of the fan housing:

Also, the motor is attached to another side by one bolt. There is no longer necessary to use the extension cord, how it will not be very convenient to be unscrewed:

Also, we turn off the wires from the temperature sensor, which is screwed into the engine cooling radiator with right side bottom:

After that, neatly, without distortion and sharp movements, take out the housing along with the electric fan, so as not to damage the radiator:

But in the photo below shows the final stage of my repair:

If you are going to buy a new fan with a housing assembly, then on the VAZ 2107 its price will be about 1000-1200 rubles. To a greater extent, this difference depends on the manufacturer.