VAZ-2112 sensors 16 valves and their location: diagram

Any modern car is equipped with many different sensors that allow the driver to know about the condition and performance of certain components. And the VAZ 2110 car is no exception; in this article we will talk about what sensors are used in it and what their location is.

As you know, the VAZ 2110 injector with 8 or 16 valves is significantly superior to the carburetor version in many ways. At least because in this case the supply of gasoline, as well as the combustible mixture, is regulated by electronics. Accordingly, the use of electronics implies the use of many different regulators and controllers. Their breakdown can lead to certain consequences, so the car owner should always know what certain regulators are responsible for. Below we consider almost all VAZ sensors that are in the top ten.

Mass air flow sensor

The power unit of the "tens" is controlled using the ECM - an electronic system. This system must always know how much air needs to be supplied for a certain volume of gasoline. These two parameters are closely related to each other, since with their help a combustible mixture with the required density is formed in the engine power unit.

After the system determines the required volume of air, it begins to select the appropriate amount of gasoline. As for the regulator, it is responsible for the suction volumes.

Air controller for the “ten”This controller has certain disadvantages, in particular:

its performance may be impaired if the controller is exposed to moisture;
if the car is moving at lower speeds, the controller can produce higher readings;
as practice shows, at idle the air regulator does not work entirely correctly;
when starting the power unit, certain difficulties may arise;
the power unit may stop abruptly for no reason after an increased power mode;
Gasoline consumption during vehicle operation may increase.

We've dealt with the shortcomings, now let's talk about how the device functions:

The controller design consists of several sensitive elements installed directly in the line itself through which the air flow passes. One of these components is designed to fix the temperature of the air flow, and the other two are always heated to the required parameters.
To correctly determine the air flow rate, the principle of measuring electrical power is used to maintain the desired temperature level.
The air regulator controller has a special mesh installed in the line, designed to filter the air flow.
Thanks to this, the sensor can transmit the necessary data to other regulators designed to activate certain modes. Subsequently, these regulators either change or support the loads.

How to determine consumption and cause

If you are starting to worry about the high fuel consumption of this car, you can conduct simple research yourself. To do this, at a regular gas station, the tank is filled, as they say, “to the cutoff.” Separately, fill a canister, for example, a 20-liter canister, and add gasoline from it until the neck of the tank is full. After this, the Lada drives 100 km, preferably at approximately the same speed, in order to find out how much the car consumes in a particular cycle. Now we pour the remaining gasoline from the canister into a measuring container and again into the neck of the tank until it stops. All that remains is to calculate how much fuel is left in the measuring container and find out how much we have used over a hundred kilometers.

Coolant temperature sensor

Removing the fan regulator on a VAZ 2110 On a VAZ 2110, sensors can be used for different purposes, but most of them are mounted in the engine compartment. On an 8 or 16 valve engine, the fan sensor is a device designed to activate the fan. We are talking directly about a fan designed to cool a hot engine.

The controller turns on automatically when the power unit reaches a certain temperature. But it can also turn on when the engine is off. At first, this fact may be alarming for many owners of the “ten”, but there is nothing wrong with it, so there is no need to worry.

It is necessary to highlight the advantages of this controller:

As practice has shown, the fan sensor is one of the most reliable vehicle devices, since its design is based on a solid filler. When the ambient temperature increases, this filler begins to expand.
The design of this device also includes a special spring-loaded lever. Thanks to this component, no defects occur during the operation of the regulator.
The device prevents sparks from appearing, which is especially important for ensuring vehicle safety.
In fact, this type of regulator itself is reliable. If you buy a high-quality device, then in the future you will notice that it will function for quite a long time; you can forget about the need to replace it for the next few years.

Instructions for removing and replacing the computer

The need to dismantle the ECM unit 16 of the ten valve engine arises if repairs are necessary when faults are identified. The repair process itself will depend on what exactly happened in the operation of the ECU. For example, if the contacts on the module connector have oxidized, the unit must be dismantled to clean or replace them. If the reason lies in damage to the housing, then the device must be removed for replacement; if water has gotten inside, then the module should be removed in order to dry it. Only after you have dried the block can it be tested.

If the problem lies in the performance of the board and some burnt-out elements, then you can try to repair it yourself by re-soldering some components. But we would still recommend turning to specialists for help, especially if you have never encountered such a problem before (the author of the video about repairing the control controller is Vyacheslav Chistov).

Tools

To replace the module, you will need:

socket head 10;
ratchet handle;
Phillips screwdriver.

Work sequence

Before dismantling the device, you should disconnect the negative terminal from the car battery:

The vehicle must be placed on a flat surface, without slopes, and the parking brake must be set.
The following stages of work are performed inside the car. You will need to carefully unplug the wire connector from the control box, but before doing so, you should unplug the latch.
When you get directly to the powertrain control controller, using a wrench you will need to unscrew the two nuts that secure the module to the bar.
After these nuts are unscrewed, you will need to move the bar itself slightly to the right side, this will allow it to be released from engagement.
After completing these steps, the control controller can be dismantled. If you are replacing a device, then if it breaks down, you should replace the module with a similar one that was installed. That is, if you had a January 7.2 ECU, then the same module is installed. If the unit is subject to repair, it should be repaired and then reinstalled. The installation procedure is performed in the same way, only in reverse order.

Do not attempt to repair the control unit if you have never had to deal with such a task before.!

Photo gallery “How to properly dismantle an ECU”

Crankshaft regulator

New crankshaft controller for the “ten” Depending on the type of car, on a 16- and 8-valve engine, the location of all controllers may be different. However, all of these devices combine into one functioning system, and the crankshaft adjuster is no exception. Thanks to this controller, the electronic engine management system of the “tens” can independently determine at what point to supply gasoline and a spark through the spark plugs in order to ignite the combustible mixture. In fact, the design of the device is a magnet, as well as a coil of thin wire.

The crankshaft sensor has certain advantages:

As practice shows, at “tens” this regulator can work for quite a long time. Its service life does not decrease even as a result of using the vehicle’s power unit under increased loads.
The crankshaft adjuster works in conjunction with the crankshaft pulley.
If the device fails, the engine may not be able to start. Or, if the regulator breaks down, the speed parameters will be reduced to 3.5 thousand per minute.

This controller is installed on the oil pump, actually at the very top of the shaft teeth. Or rather, one millimeter from the cloves. You can learn more about how to replace this controller yourself from the video below (the author of the video is the channel In Sandro’s Garage).

Description

The VAZ 21124 engine is part of the line of 16-valve power units produced by AvtoVAZ JSC. It is an in-line 4-cylinder power unit with overhead camshafts and electronic fuel injection (injector).

The gas distribution mechanism is driven by a belt, which must be changed every 45,000 km. At the same time, the manufacturer recommends inspecting it for damage and eliminating sagging every 15 thousand km of the distance traveled.

The VAZ 21124 engine is assembled on the basis of a tall (197.1 mm) cylinder block modification 11193-1002011, the use of which made it possible to increase the piston stroke to 75.6 mm. This led to an increase in the useful volume of the cylinders to 1.6 liters, torque and power of the power unit.

The developers of the 21124 motor managed to eliminate a significant drawback inherent in many motors. If the drive belt breaks, the power unit does not bend the valve. This was achieved by equipping the pistons with special holes that prevent contact between the piston and the valve in an emergency.

The use of hydraulic pushers made it possible to eliminate the need to adjust valve mechanism clearances. True, at the same time, the sensitivity of the engine to the quality of engine oil has increased.

The features of the VAZ 21124 engine also include:

absence of high-voltage wires. Instead, a separate ignition coil was installed on each spark plug;
the presence of special nozzles designed to cool the piston bottoms. They are pressed into bearing supports.

Coolant temperature indicator

Antifreeze or coolant is used to cool the engine. To ensure proper operation of the power unit, the coolant also has its own controller. In its functionality, this regulator is vaguely reminiscent of the choke that is equipped with 8- and 16-valve carburetor engines of the “ten” and other vehicles. The sensor itself is designed to monitor the temperature of the consumable.

Installing a new antifreeze sensor Essentially, this device also provides fuel regulation. If the power unit is running cold and has not yet warmed up, it will receive more gasoline for normal operation. Readings about the coolant temperature are displayed on the control panel in the vehicle interior. In accordance with these indicators, the driver will always be able to find out about the overheating of the unit by the way the sensor arrow on the dashboard begins to move into the red zone.

The antifreeze temperature sensor periodically fails; it is characterized by the following malfunctions:

Loss of electrical contact inside the controller, resulting in its inoperability.
The device is installed in such a way that it may be exposed to moving elements, particularly the accelerator pedal cable. It would be even more correct to say that the cable does not act on the sensor itself, but on its wires, which in fact can lose insulation as a result of long-term use.
Often the regulator breaks down if the ventilation device starts to function on an engine that is not warmed up.
If the motor is overheated, it may be difficult to start.
If the fuel temperature controller fails, it can lead to increased gas mileage. If you encounter one of these problems, then to ensure normal operation of the car engine, you need to replace the controller. Detailed replacement instructions are presented in the video below (author - REPAIR VAZ 2110, 2111, 2112).

Description of "brains"

The VAZ 2110 is considered the first vehicle in the domestic automobile industry equipped with an injection engine. The power unit is controlled by an ECU, an electronic device that determines the basic parameters of engine operation in accordance with sensor signals. In fact, the ECU of a VAZ 2110, VAZ 2112 or any other model is the “brains” of the car, the operation of which affects the functionality of the vehicle as a whole.

Control controller in VAZ 2110

In the “Tens”, as well as the VAZ 2112, there are 16 valves and other models equipped with BOSCH 7.9.7 or January 7.2 systems, one M6 screw is installed in the head. From this screw the mass is taken to the ignition coils, and the mass is taken directly to the control model in the cabin. Typically, the mass is a welded stud mounted on the ECM bracket, particularly behind the center console, behind the left screen. In this case, the mass is transferred to the bracket through a pin, which is welded on the engine shield in the middle. It should also be noted that the nut on this stud is not usually tightened.

Control unit location

Now let's consider the location of the VAZ 2110 ECU. This device in the Ten is located under the center console, in its lower part, in particular, under the control panel. In order to gain access to the control module, you must remove the plastic panel on the passenger side, to do this you will have to use a Phillips screwdriver. Once you remove the cover, you will see many different wires, plugs, and safety devices. The controller itself is located behind them, it is screwed to the bar in a horizontal position.

The arrow indicates the location of the ECM module behind the center console

Typical malfunctions: their symptoms and causes

If the electronic engine management system malfunctions, this can lead to problems with the operation of the power unit. Unfortunately, ECU malfunctions in dozens of domestic cars are not uncommon, so the car owner should be aware of the main problems, as well as the reasons for their occurrence.

First, let's look at the symptoms of malfunctions:

There is no connection with the diagnostic tester. If problems begin to appear in the operation of the engine, the car owner can diagnose the performance of the power unit using a tester or laptop. But if the ECU does not work, then when trying to contact the on-board computer, the car owner will see that there is no connection.
The ECM does not receive signals about the operation of the injectors, ignition system, fuel pump, valve or idle speed sensor. There may also be no signals from other actuators.
Another sign is the lack of response to the oxygen sensor, engine temperature controller, throttle position sensor and other controllers.
Mechanical damage to the device can also be a sign of failure. Cracks may appear on the case as a result of strong mechanical impact; radio elements or conductors could burn out (the author of the video about the repair is Pavel Ksenon).

As for the reasons, malfunctions in the electronic control unit can occur as a result of:

Unskilled intervention. This reason is one of the most common. If a car owner independently carries out electrical repairs or installs an anti-theft system, or entrusts this work to unqualified craftsmen, errors may be made in the process.
A common problem is lighting a car battery from a vehicle with the engine running. When lighting the engine, the engines of both cars must be turned off, otherwise there is a risk of brain damage, this is important to remember.
Another problem that does not occur so often is polarity confusion when connecting a car battery. If you confuse plus with minus, it can not only damage the control unit, but also damage the battery itself, which can lead to expensive repairs.
The reason may be that the battery terminals are disconnected while the engine is running.
Also, the control unit may fail as a result of turning on the starter unit with the power bus disconnected.
The engine control system can be damaged if an electrode accidentally hits the sensor or vehicle wiring during welding work.
One of the most serious problems is water getting into the ECU. If liquid gets into the device, the board itself may become covered.
A break in the electrical circuit or a short circuit in the wiring.
The cause may also be malfunctions in the high-voltage component of the ignition system. For example, a breakdown of the ECU can be caused by a failure of the coil, high-voltage cables, distribution mechanism, etc.

Pinout of contacts on the controller

Speed sensor

8- and 16-valve “tens” are also equipped with a speed sensor. Thanks to this device, the electronic engine control system receives information about how fast the vehicle is moving. The sensor itself is installed on the vehicle's gearbox. As practice has shown, on VAZ 2110 cars this controller is characterized by fairly high reliability and a long service life.

But domestic developers could not do everything perfectly, so this device is characterized by several malfunctions:

If a component fails or does not work correctly, then when idling, the power unit may turn off on its own.
A failed regulator can partially affect the speed characteristics of the vehicle. Of course, if the device breaks down completely, the driver will not be able to know how fast it is moving.

Two speed controllers.

Specifications

PARAMETER	MEANING
Cylinder volume (working), cm3	1599
Maximum power, l. With. (at 3800 rpm)	98
Maximum torque, Nm (at 3800 rpm)	136.8
Number of cylinders	4
Number of valves per cylinder	4
Total number of valves	16
Cylinder diameter, mm.	82
Piston stroke, mm	75.6
Fuel supply system	Electronic injection
Compression ratio	10.3
Type of fuel	AI-95
Fuel consumption, l./100 km. (city/highway/mixed mode)	8,9/6,4/7,5
Lubrication system	Combined (pressure + spray)
Oil used	5W-30, 5W-40, 10w-30, 10W-40
Oil volume in the crankcase, l	3.5
Cooling system	Liquid, closed type, with forced ventilation
Coolant	Based on ethylene glycol, density 1.07-1.08 g/cm3.
Weight, kg.	121
Motor resource, thousand hours. (factory/practice)	150/250

The power unit was installed on VAZ cars: 21104, 21114, 21123, 21124 and 211440-24 (“Super-auto”).

Phase sensor

This sensor is not installed on 8-valve engines; it is present only on 16-valve versions of the “ten”. The main purpose of the controller is to provide the necessary data to the power unit control system. In accordance with these data, the system determines at what point in time and where to inject fuel, into which specific cylinder.

Every owner of a VAZ 2110 should know where this device is located. If you open the engine compartment of the car, you will see that the regulator is located on the right side of the neck for filling the engine fluid.

In principle, if the regulator breaks, nothing bad will happen if you look at it from the point of view of the integrity of the vehicle. But failure of the controller will in any case provoke an increase in gasoline consumption. This is due to the fact that the electronic control system of the internal combustion engine will independently switch the gas distribution mechanism to standby mode.

Accordingly, gasoline will begin to be supplied to all cylinders of the engine at once. And at first, the driver may not even know about it until he diagnoses the regulator or measures fuel consumption.

New phase sensor for the VAZ 2110 Naturally, such a model of the domestic automobile industry as the “ten” is not the most modern and advanced car in terms of electronics. However, machines of this model are equipped with a wide variety of regulators and controllers. In this article, we did not talk about all the devices, but only about the most basic ones that every motorist should know about. You can find more detailed information in other articles on our website or in the service book for your car.

ECM

VAZ 2110 injector air sensor

This system is installed on almost all modern cars, and the VAZ 2110 is no exception. The ECM is the same injector that has recently completely replaced the carburetor version, due to its obvious advantages. As is known, unlike a carburetor engine, an injector injects and supplies fuel using injectors (see VAZ 2110 injectors and their cleaning) controlled by an electronic system. Not only this, but also other advantages distinguishes an electronic injection system from a carburetor one. “Smart” electronics allow precise dosing of the air-fuel mixture, which provides better fuel economy and engine power. In addition, thanks to the injector, an environmental component is provided - the emission of harmful substances into the atmosphere is no longer the same as before.

Idle speed control

Today, in urban environments, drivers simply cannot do without idling. Therefore, every car, including the VAZ 2110, is equipped with an idle speed sensor. Incorrect operation or failure of this regulator will significantly complicate driving, because it will cause the engine to stop even during the shortest stops. So if the controller fails, and this is not uncommon in VAZ 2110 cars, it needs to be changed as quickly as possible.

Removing the idle speed regulator The main purpose of this type of regulator is to support the speed required for normal operation of the power unit. Thanks to the device, the driver can always make a short stop as a result of changing the incoming air volume. As for the location, this controller is installed on the throttle line. In particular, we are talking about an anchor stepper motor, which is equipped with two windings.

When a corresponding signal is received on one of the windings, a special needle moves forward one step and backwards one step. Thanks to the worm gear, the device rotates, which is produced using a stepper motor, thus converting this movement into translational. The rod itself, namely its conical part, is located in the line through which the air flow is supplied.

Thanks to the functioning of the rod, the system adjusts the idle speed of the power unit. The rod from the device, as mentioned above, can be retracted or extended. In this case, it all depends on what kind of pulse will be supplied from the regulator. The controller itself allows you to adjust the frequency at which the engine crankshaft will rotate when the machine is stopped for a short time.

In addition, the controller controls the incoming air flow, which bypasses the throttle in the closed position. When the engine is warmed up, the regulator, by controlling the movement of the rod itself, at idle speed allows you to maintain the required crankshaft speed. In this case, the load and condition of the power unit do not play a role.

Fan controller

Serves to force cooling on. The VAZ-2110 fan sensor was installed only on the first “ten” models equipped with a carburetor engine. Structurally, it is a sealed brass cylinder, inside of which there are bimetal contacts. When heated, they bend and close the electrical circuit, the fan turns on. True, its high current consumption (about 15 amperes) does not allow it to be powered directly, through bimetallic contacts. For this purpose, there is a special relay in the circuit.

The main disadvantage of the controller is its low reliability. The sensor often stops working, which can lead to engine overheating. Its location at the bottom of the radiator makes replacement quite labor-intensive. The coolant will need to be completely drained.

Replacing the speed sensor on a VAZ 2110

Find out how to replace the speed controller on an injection “ten” at home from the video below (the author of the video is In Sandro’s garage).

The efficient operation of the injection engine is ensured by a set of sensors. They all connect to the ECU. Lada hatchbacks of the 2112 family were produced only with injection engines, and two varieties of these internal combustion engines are 16-valve. We will talk about them further. All VAZ-2112 sensors, their location and appearance will be shown in the photo. The excess oil pressure sensor, which is not connected to the ECU, is shown in the video.

Video “No spark and blown fuse - repairing the ECU”

What to do if there is no spark and the fuses are constantly blowing - the video below shows the process of repairing the control controller in a garage (the author of the video is the Auto Practice channel).

JSC AvtoVAZ, in the process of producing cars of the tenth family, was constantly improving their power units. And engine 21124 is no exception.

Created on the basis of the 2112 engine in 2004, this engine differed favorably from other engines in this series due to its high environmental characteristics and increased cylinder capacity.

Later it became the prototype of more powerful VAZ power units:

21126, which has been installed on the VAZ 2170 Priora since 2007;
21128 with a volume of 1.8 liters, mass-produced at the Super-auto enterprise and intended for installation on LADA 112 Coupe, LADA Priora, etc.

Understanding the oxygen sensor

It is necessary to determine the sensor articles not by the engine model or even by Euro standards, but only by the ECU unit. The number of oxygen sensors can be two or one - it all depends on environmental standards. AvtoVAZ also used two types of sensors - 0 258 005 133, 0 258 006 537 (BOSCH part numbers). The first of them are compatible with BOSCH M1.5.4, MP7.0 and January 5.1 controllers. Newer sensors were connected to the BOSCH M7.9.7 ECU (January 7.2). The two different types of sensors differ even in appearance. The ECU unit in “Dozens of VAZs” is located under a plastic cover. It is located near the front passenger's foot. The red arrow marks the first, that is, the main sensor. The top photo corresponds to engine 21124 (1.6 l). VAZ-21120 engines (1.5 l) could meet the Euro-3 standard, and then an “extended” catalyst was welded behind the main sensor. The second sensor was located behind it, that is, behind the “can”. Let's clarify:

The Euro-2 standard corresponds to a design with one sensor (main);
During the transition to Euro-3 standards, a second sensor was added (blue arrow).

By the way, the 24th engine can meet Euro-4 standards.

Car mileage

A very important point is the mileage of the car, as well as its condition. If this is a new car from a showroom, then all average fuel consumption indicators should match. If the car’s mileage has exceeded 100 thousand kilometers, then gasoline consumption may exceed the average.

It also depends on where the car was driven, on what roads, at what pace, and whether the engine was repaired. To find out exactly what gasoline consumption on a VAZ 2112 will be under your driving mode, fill the tank with 1 liter and check how far you can drive. Car mileage is the total number of kilometers that the car has traveled without repairing the engine and its main components.

Main set of sensors for 16-valve VAZ-2112 engines

The ECU must control many parameters at once. The most important information will be the position of the crankshaft. You can turn off all sensors except the DPKV, and this will not lead to the engine stopping. Let's list all the elements one by one: Let's look at how all the elements look in real life. Shown are pictures of VAZ-2112 sensors (16-valve internal combustion engine). Everything said above is true for two engines at once - for units 21124 and 21120 (1.6 and 1.5 l). You cannot unscrew the DTOZH sensor without draining the coolant. And to disconnect the sensor means to disconnect the connector, but not to dismantle the sensor itself.

Where is which sensor located - engine compartment diagram

Let's look at another picture. It is important to understand where the following elements are located:

DPKV;
Lambda probe;
Speed sensor;
RXX;
TPDZ;
DMRV;
DTOZH.

The location of the phase sensor is indicated in the previous chapter. Never unscrew the speed sensor. It will be difficult to install it in a way that maintains a seal.

Maintenance

Maintenance of VAZ 21124 engines generally comes down to periodic replacement of consumables - engine oil and coolant.

The main requirement that must be fulfilled is to inspect the engine for leaks. As a rule, replacement of technical fluids is carried out after eliminating detected leaks within the time limits specified in the maintenance regulations:

engine oil - after 15,000 km;
The coolant is changed if it has radically changed its original color. Typically, the coolant acquires a rust color after 25-40 thousand km. Before replacing, it is advisable to flush the cooling system.

Articles

For oxygen sensors, the designation 21120-3850010 was first used. Then an article appeared with the numbers 1118 (see photo). It appears to be a new type of sensor. It will be easier to use BOSCH articles. We list the article numbers of the remaining sensors:

Mass air flow sensor (21124 or 21120): 21083-1130010-01, -10, -20;
Mass air flow sensor (motor 21120 with ECU January 4.1): 2112-1130010, -01;
DPDZ: 2112-1148200;
РХХ: 2112-1148300-02;
DPKV: 2112-3847010, -01, -03, -04;
DTOZH: 2112-3851010, -01, -02, -05;
Speed sensor: 2110-3843010-13, -18;
DPRV: 2112-3706040, -02, -03;
DD: 2112-3855020, -01, -02, -03;
Oil pressure sensor: 2106-3829010, -01, -02;
Antifreeze level sensor: 2110-3839310-10, -11, -12, -13, -14;
Coolant temperature indicator sensor: 2101-3808600, -02, 2106-3828010.

The last three sensors are not connected to the ECU. However, a rough road sensor (2123-1413130) can be connected. It affects the operation of the engine, although it is attached to the body. Engines with ECU January 4.1 do not have oxygen sensors. In general, on VAZ-2112 hatchbacks, sensors may be different from those indicated in the list. But then we are talking about an 8-valve engine. And everything that we indicated applies to 16 valves, here is a diagram of this engine.

Symptoms of malfunction

To ensure that the correct data from the coolant temperature sensor is transmitted to the electronic control unit, it must be properly installed.

The DTOZH location is located near the thermostat housing. The sensor tips must be in contact with the coolant.

Therefore, the root cause of the incorrect operation of the DTOZh may be its banal incorrect installation.

Some symptoms will allow even an inexperienced motorist to determine that the problem lies in this sensor:

Exhaust gases are of very low quality due to a disturbed air-fuel mixture;
Fuel consumption figures have increased noticeably;
Exhaust gases have a deteriorated composition;
The engine becomes difficult to control;
A malfunction code is displayed on the dashboard, or a warning light begins to blink, indicating overheating of the power unit;
It is difficult to start the engine.

Many people immediately drive the car into the garage and begin replacing the coolant temperature sensor on their VAZ 2110. But often the cause of such symptoms is the presence of damaged wiring or poor contact of connections. Therefore, check them first.

It is also possible to determine externally that the sensor has failed. The presence of traces of rust, corrosion on the device, and deposits indicate that it is better not to use this sensor in the future.

You can arm yourself with a voltmeter or multimeter to determine the resistance. When cold, normal sensor readings should be 2V, and if the engine is hot, then 0.5V. Any deviations from the norm indicate failure of the meter.

The check showed that the sensor was to blame. Therefore, you have no choice but to replace it with a new one. For this:

The coolant is drained. It is better to drain the maximum amount. Especially if the coolant has long been due for replacement;
Disconnect the terminals from the battery;
To make it more convenient to work, remove the air filter from its seat;
Turn off the ignition and remove the sensor connector;
Use a 19mm wrench to remove the sensor. The sealing ring must be removed along with it;
A new seal ring is taken and a new, high-quality coolant sensor, suitable for the VAZ 2110 model, is mounted in place of the old one;
The entire assembly process is performed in reverse order.

The coolant temperature sensor for the VAZ 2110 plays an important role. The owners of this model know very well that its failure is not a rare situation. The good news is that the replacement procedure is not complicated and can be carried out by any driver, even whose driving experience does not exceed several days.

As for the cost of self-repair, you only need to purchase a new O-ring and the sensor itself, of course. Today, a good quality device for a “ten” costs about 200 rubles. The tools are only the most standard ones, so you won’t have to buy anything or spend any extra money.

A professional will do the work at the auto repair shop, but the cost of the repair will be appropriate. Plus, many service stations use cunning moves, trying to force the car owner to perform a number of additional measures. Sometimes they are really useful, but sometimes they are just an attempt to get more money out of you.

Decide for yourself whether it’s worth taking the car to a service center to replace the TOZ sensor, or whether you can calmly complete the entire procedure yourself in an hour, but save a decent amount of money.