Kalina 8-valve engine temperature sensor and sensor number

A coolant sensor is needed to regulate air flow. With its help, the fuel mixture is depleted or enriched. On an injection engine, as a rule, the higher the coolant temperature, the lower the sensor resistance. For example, at a temperature of 100 degrees the resistance will be 177 Ohms, at 80 degrees - 332 Ohms, and at 45 degrees - 1188 Ohms.

The original DTOZH has catalog number 2112-3851010. There are several high-quality analogues: ERA (33026), Luzar (LS 0112), Fenox (TSN 2211207).

The sensor is installed in the engine coolant flow on the thermostat, on the cylinder head. On vehicles of the LADA 4x4 family, the sensor is installed on the outlet pipe.

Troubleshooting and repair

The first signs of trouble will be:

problems with cold starting the car;
the engine stalls periodically;
fuel consumption increased;
The temperature alarm indicator is on;
Inadequate temperature readings on the dashboard.

When faced with one or more problems from the list, you need to understand what the reason is in more depth. Having opened the hood of the Lada Kalina, you should inspect for coolant leaks. One of the main reasons for a malfunction of the meter may be an insufficient level of antifreeze or its leakage. After making sure that there is no leakage, additionally make sure that the antifreeze level is as required; if there is a deficiency, add fluid.

The next step is to check the contacts and electronic circuit. Over time, the wiring wears out, the contacts rust and oxidize. They might even get dirty. It is necessary to clean them and make sure that the electronic circuit is working properly.

Only after the first two steps of the initial inspection can you begin to inspect the meter itself.

Dismantling and inspection are carried out as follows:

first of all, it is necessary to turn off the power to the vehicle and drain the coolant, only after this can you begin direct dismantling;
then disconnect the connecting wires from the meter. Inspect them and clean them;
unscrew the sensor itself, you may need a deep head for this;
After removing the detector, clean it and check its operation. This is usually done by immersing the sensor in a glass of water, then heating it, then cooling it and measuring the resistance of the meter;
if the old sensor malfunctions, you must buy a new one, since it cannot be repaired;
Installation of a new or old working device is carried out in the reverse order of its dismantling. Remember that the sensor must have a sealing ring (if it is an old meter, purchase a new seal for it); in addition, you can use sealant;
check the operation of the device when the car is running, and also make sure that antifreeze does not leak while the system is running.

DTOZH is not a detail that should be joked with or forgotten about. It makes sense to buy such a spare part immediately when purchasing a car. It is not expensive, but it saves significant amounts of money on excessive fuel consumption and repairs of a “tied” car.

The Kalina engine temperature sensor is needed for the operation of its entire system. If there is no spare part and the device breaks down on the road, it can be replaced with a counterpart that communicates with the dashboard. This temporary solution will allow you to get to the repair point without incident.

The main thing in the car is still the meter that communicates with the ECU. The second only keeps you personally informed of events. Although, given that in a critical situation it is the second one that can turn out to be a lifesaver, we should not forget about its timely replacement.

As a final recommendation, I would like to mention one more detail. Many people add ordinary or distilled water to the cooling system instead of a specialized liquid, believing that this way they cheat the system and save money. In fact, such people are only deceiving themselves.

Filling with distilled water is a last resort when there is no access to normal antifreeze. Even one-time use of such water already causes irreparable damage to the cooling system. Ordinary water tends to affect the mechanisms of the cooling system, cause rust in it, and form a heavy sediment in the pipes. All this clogs the system, spoils it, and ultimately kills. Always use only specialized coolant and remember to replenish its level promptly.

DTOZH or a sensor that measures the temperature of the cooling system fluid is a mandatory part in the engine control system. Based on the data received from it, the composition of the fuel-air environment is automatically adjusted, as well as the crankshaft speed and ignition timing.

Therefore, monitoring the operation of the DTOZh is necessary, and in such Lada models as Granta, Largus, Priora, Vesta, Kalina Xray and all-wheel drive Niva, this manipulation is performed in the same way.

Operating principle of DTOZH

Complex processes of temperature and voltage fluctuations constantly occur inside the engine. When the temperature drops below the permissible level, an enriched mixture is required for normalization. If the scale rises above a certain mark, then, on the contrary, an enriched mixture can lead to catastrophic consequences for the engine. During normal operation of the DTOZh, all this data comes to the dashboard in an ideal format, becoming excellent hints of the car’s wishes addressed to the driver.

But in the event of a break, even the most microscopic one, in the sensor wiring, these measurements are already made in a broken format. As a result, when it is not needed, the system supplies an enriched mixture, which causes excessive fuel consumption in the engine. The power unit begins to work in an increased mode for wear and tear, the result of such work is a high percentage of harmful emissions into the atmosphere.

There is another situation when a short circuit occurs in the sensor, then such a pulse is perceived by the electronic control unit as obvious overheating inside the power unit. Adjusted to prevent overheating, the control system delivers a lean mixture. Since there is actually no overheating, a lean mixture causes the engine to run inefficiently, causing it to lose its power and stability. The result is breakdowns requiring repair.

Operating temperature of 8-valve

How to check the engine temperature sensor with a multimeter
The normal operating temperature for eight-valve engines on Kalinas and Grants is exactly 90 ºC. But owners complain that sometimes it has difficulty reaching 80 degrees even in warm weather. The reason lies in the thermostat - it opens fully at a temperature of 85 degrees. Moreover, the permissible deviation from this value is very large - (85±8.3) ºС.

In other words, the run-up is 77..93ºС.

But the fuel mixture can only ignite normally if the engine temperature is about 90 degrees. This is the value stored in the electronic control unit. If the temperature is too low, the mixture becomes richer (the amount of gasoline increases). This is the main problem that occurs when the temperature drops. And in winter the heater works worse.

Your case

Temperature diagram. Normal operating temperature is at 90 on the instrument panel.

In your case, the thermostat is most likely stuck, usually stuck in the middle. In this case, either repairing or replacing the thermostat will help.

A stuck thermostat valve is a typical malfunction of the engine cooling system.

That is, the liquid that has not yet been heated is supplied to the cooling radiator and blown by a strong wind flow. Indeed, with an increase in air temperature, the problem will partly go away. That’s why they used to put cardboard on it and drive like that for years. But we don't recommend doing this.

Solution

The problem of low temperature of the engine cooling system can be eliminated by installing a thermostat that opens at 92ºC. The WAHLER 3091.92D element performs excellently.

You just have to disassemble it and transfer the inside to Kalina’s original thermostat.

There is a downside: in summer the temperature will be higher, and there is a risk of boiling in a traffic jam. To be more precise, this risk is higher when installing a thermostat with a late opening time!

Be sure to use new gaskets and lubricate them with a small amount of sealant - this will prevent coolant leaks.

Symptoms of a problem

There are a number of typical problems in engine operation associated specifically with the engine temperature sensor, but it should be noted that these problems can also be due to other reasons; diagnosing or checking the sensor will help to accurately determine the problem.

Floods spark plugs during a cold start;
The car stalls when cold, the speed fluctuates;
The fan does not turn on;
There are no increased engine speeds when warming up;

If you find such problems on your car, you need to check the sensor.

How to dismantle

VAZ 2114 engine temperature level sensor

Many drivers are confused where the temperature sensor is located in the system, which provides information to the ECU, and where the instrument cluster is. In Kalina, the first controller is embedded in the thermostat, which is located on the coolant outlet pipe from the engine. The transmitting sensor is located nearby; you can find it using a thin wire.

All work on removing and installing parts is carried out with the engine turned off and the negative terminal of the battery disconnected. Dismantling order step by step:

Loosen the screw securing the air hose coupling to the air filter housing. This will allow you to get to the instrument sensor. If necessary, remove the air filter housing for good access to the sensors.
Remove the screen or engine cover, using force, remove the cover from the latches.
Drain the coolant from the radiator. On Kalina, antifreeze or antifreeze is used. To do this, the fluid needs to be cooled, but experienced drivers replace it without draining the antifreeze. In this case, all replacement work will need to be carried out quickly and accurately. Therefore, if the sensor is changed for the first time, it is better to drain the coolant so that an air lock does not form in the system.
Disconnect the wire block.
Using a socket head or a 19 mm wrench, unscrew the sensor from its seat. If the coolant is not drained, antifreeze will flow out of the hole. Therefore, experienced drivers who are too lazy to drain it immediately clamp the hole with their finger and insert a new one.

Installation of the elements is carried out in the reverse order - the sensor is inserted into the hole, screwed in, connected to the wire block, and antifreeze is poured. The functionality of the system is checked after connecting the battery.

How is the sensor replaced?

How to replace the engine temperature sensor on a VAZ 2110

It would not be amiss to mention once again that the symptoms described above can be caused not only by a malfunction of the coolant detector.

It is worth paying attention to the fans, checking their functionality, assessing the integrity of the wiring (breaks, breaks), the quality of contacts and terminals (oxidation, rust, mechanical damage), and also inspecting the device located in the cylinder head, since the pointer sensor may also cause data malfunctions. So

First of all, the engine is cooled if the car was running before repair

So. First of all, the engine is cooled if the car was running before the repair.

After the driver has made sure that the engine has cooled down, you can begin replacing:

De-energize the vehicle system by removing the negative terminal from the battery. If you are not so experienced in repair work under the hood, you can remove both terminals to be sure;
drain the antifreeze. In all brands of cars, DTOZH are in direct contact with the measurement environment. This means that when removing the sensor from its socket, if the coolant is not drained first, it will rush in all directions, flooding important parts of the car. It's not very good;
After you have collected the coolant in a container prepared for this, you can begin to dismantle the sensor. You can first disconnect the pipe, which makes it a little difficult to see and access the desired device. Over time, you can get the hang of doing all the manipulations without it, but first it is recommended to disconnect it. Some car owners remove the air filter housing to have more free space;

Replacing the temperature sensor

disconnect the block of wires going to the sensor from the control system, and then unscrew the device itself using a key of a suitable size (on Kalina this is usually 19);
install a new one in place of the removed device and carry out the assembly in the reverse order. It is worth considering that some detectors may have weak threads. This can be easily compensated for if, when installing the DTOZH, a seal is used that will prevent antifreeze from leaking through the gaps in the detector socket;
fill in the coolant, connect the battery, start the engine and make sure that the repair was successful and the system is working properly.

How to independently replace temperature sensors on a Lada Kalina car

Preparatory stage:

Open-end wrench set to “19”;
Rags;
Additional lighting as needed;
New "measuring device".

Replacement algorithm:

We install Lada Kalina in the perimeter of the repair area;
We turn off the engine, open the hood;
We provide priority safety measures: block the rear row of wheels with wheel chocks, squeeze the parking brake;
Remove the terminals from the DTOZH, unscrew the sensor with a key;
We replace the device with a new one, screw it in, and put on the power terminals again.

We turn the key in the ignition, activate it, and check the functionality of the equipment. Add the missing amount of antifreeze as needed.

Causes of failure of the coolant temperature sensor

Structurally, the coolant sensor is quite simple, and accordingly, it rarely fails. Usually this happens simply due to its old age or mechanical damage. For example, corrosion of contacts and metal parts of the case may occur due to the fact that instead of antifreeze or antifreeze, ordinary water was poured into the cooling system (and even more so if this water is “hard”, that is, with a high content of metal salts). Also, the reasons for the failure of this device may be:

Damage to the body. This can be expressed in various aspects. Often, leaks of coolant are visible, which flows from the threads of the sensor or its housing. Also, the electrical contacts and/or the thermistor itself may be damaged, which will produce an incorrect signal.
Oxidation of contacts. Sometimes situations arise when, under the influence of fumes or simply from old age, the contacts on the sensor oxidize, so the electrical signal does not pass through them.
Damage to the chip. In some cases, due to mechanical damage, the so-called “chip” may fail, that is, a group of contacts that is connected to the coolant temperature sensor. Simply put, the wires at the base of the connector fray. According to statistics from reviews found on the Internet, this is one of the most common malfunctions that occurs with the sensor and the corresponding system.
Lost electrical contact inside the sensor. In this case, unfortunately, repair is hardly possible, since usually its body is sealed and does not allow access to the insides of the DTOZH. Accordingly, in this case the sensor only needs to be replaced with a new one.
Violation of wire insulation. In particular, we are talking about the power and signal wires that go to the sensor from the electronic control unit and back. The insulation can be damaged due to mechanical stress, abrasion, or even simply from old age, when it “peeles” in pieces. This is especially true for those machines that are operated in conditions of high humidity and sudden changes in ambient temperature.

If it is possible to simply clean the body/threads/contacts of the sensor, then to restore its normal operation it is enough to carry out the appropriate measures. However, if the housing is damaged and/or the internal thermistor is damaged, then repair is hardly possible. In this case, you just need to replace the sensor with a new one. Its price is low, and the replacement process is simple and will not take much time and effort even for novice car owners.

Checking the DTOZH

Since the coolant temperature sensor on Kalina is responsible for a large number of different functions, its failure will not lead to anything good, so you need to check it to determine the condition of the sensor.

To check, you will need a regular multimeter for 500 rubles and boiling water. The sensor is dismantled and placed in boiling water with the multimeter probes already connected to it in advance, and on the multimeter it is necessary to monitor the readings; they should increase as the liquid cools. For a more accurate check, it is best to use a thermometer to compare temperature and resistance readings according to the table below.

Source

What is the operating temperature of the Lada Kalina engine?

Normal operating temperature of internal combustion engine: +90. +95, if above +97 then the internal combustion engine will be slightly dulled, but this t is also considered normal, up to +110 is also normal, but the radiator fan should already turn on. If t is below +90, this is not overheating. We look at the thermoelement for grinding into the thermostat cover (so that when closed it does not etch into a large circle) and the serviceability of the thermoelement itself by boiling it in the thermostat cover. If the lower pipe is cold, this is not a fact that it does not poison the large circle.

I purchased a 6-hole thermostat assembled, sealed, with an Quality Control Department stamp, t 85, PRAMO, for 505 rubles. I also had a thermocouple from a viburnum, also at t 85, lying around for a long time. ___________________________________________

Kalinovsky thermoelement:

__________________________________________________

Thermostat with thermocouple:

__________________________________________________

I boiled both thermoelements in this one housing of the new thermostat, the result:

1. Thermoelement from viburnum: opened slightly at +92 (began to let water through at atmospheric pressure) at 96 opened slightly by 5 mm +100 opened by 8-9 mm diluted the water to +83 - almost instantaneous slamming.

2. Stock thermocouple Pramo: opened slightly at exactly +85 and went at atm. pressure +86 hole mm 2-3 +88 hole approximately mm 5 diluted the water to +83 - it slows down for about a minute.

Now do you understand why your operating temperature in winter is +88 and below?

There was a thermoelement left from the new PRAMO thermostat, which turned out to be a little longer (rod) and did not fit tightly into the cover of the Priora thermostat. The cover of the Priorov thermostat was drilled out a little and the thermoelement sat tightly, now it is not blown through. (before these actions I thought about it, I didn’t sit down by two mm)

via FTP video 5:52, 24.4 MB _______________________________________________________________

And now the sea trials of the Kalina thermoelement with the Pramo cover:

In weather -15, VideoAdded t coolant on the move, t air in the driver's compartment, t air flow at the carrier's feet

(16.6 MB)

Via FTP, 16.6 MB ________________________________________________________________

Warming up from a cold start, with on. stove, -16 on the street, -15 coolant, -15 in the cabin, at XX, 24 minutes: here is the video, 63.4 MB:

Warming up from a cold start, with off. stove, -19 on the street, -18 coolant, -17 in the cabin, at XX, 23 minutes: here is the video, 30.4 MB:

After a year, RESULT: Summer is working. temperature +92. +94 (tested at temperatures up to +35 C) Winter working. temperature +90. +92 (tested at temperatures down to -41 C)

Detecting a sensor malfunction and replacing it

Design of the cooling system of Lada Kalina 1 - expansion tank; 2 — radiator outlet hose; 3 - inlet hose; 4 - radiator; 5 — steam exhaust hose; b — radiator supply hose; 7 — electric fan; 8 — electric fan casing; 9 — coolant temperature sensor; 10 — coolant temperature indicator sensor; 11 — throttle assembly; 12 — bracket for the coolant pump pipe; 13 — coolant pump; 14 — coolant pump pipe; 15 — heater radiator supply hose; 16 — heater radiator outlet hose; 17 — exhaust pipe; 18 — coolant pump pipe hose; 19 — thermostat housing

To determine that the evaporator temperature sensor is faulty, you should first conduct a visual inspection, thorough and consistent

Particular attention should be paid to wires and their connections, since this is where microscopic breaks most often occur. In addition, rust deposits, even in minute doses, can lead to failure.

Cracks in the housing cause coolant to leak, which is also bad. So, if Kalina’s control unit receives dubious information about the coolant level, if the engine begins to give unjustified failures and then completely stalls, if the engine suddenly begins to lose power and controllability while driving, in 80 percent of cases this may indicate sensor malfunction.

Therefore, in order to determine the location of the breakdown, you should first check this device. In addition to these symptoms, the following signs indicate that the coolant temperature sensor needs repair:

at idle speed the engine is unstable, starting is difficult, stalling occurs;
fuel consumption suddenly increases;
The control lamp warns of overheating.

You can determine whether the interior temperature sensor is working by checking the resistance and voltage. To diagnose, you need to remove the sensor, then lower it into a container of water, the temperature of which is alternately changed. In warm water, the voltage should vary from 3 to 1 W for 4-5 minutes. In addition to monitoring the sensor, other systems should be carefully checked.

Radiator and coolant level

It is very important to know here that the radiator cap can only be removed when the engine has cooled down, otherwise it is easy to get a serious burn. The tightness of the lid should also be checked.

If the cover is not sealed, then air enters the system, which leads to overheating of the motor and, as a result, distorted sensor data.

And lastly, it is necessary to monitor the performance of the fan, on which a lot also depends. To dismantle the Kalina DTOZh device, you must first disconnect the negative wire from the battery. Next, you need to drain all the coolant. The third step is to disconnect the wiring from the sensor. Now we arm ourselves with a 21 key and unscrew the device.

Install the new one in the reverse order. Don't forget to fill the radiator with antifreeze at the end of the job. The temperature sensor is changed only as a last resort, when it is known for sure that it is faulty. Checking the device was discussed in the previous paragraph. But sometimes the sensor changes even in its functional state. When is this done? If it is necessary to completely overhaul the Kalina engine or replace it.

Such changes primarily affect the operation of the sensor, so in order to avoid possible difficulties and troubles, it is better to replace the device with a new one. In the event of emergency overheating of the power unit and the sensor, problems occur

Therefore, when repairing the Lada Kalina engine, do not forget to pay attention to the sensor

Source

Checking the coolant temperature sensor

I will not show tables with sensor resistance values at a certain temperature, since I think this method of checking is not entirely accurate. The simplest and fastest way to check the DTOZH is to simply remove the chip from it. The engine will go into emergency mode, the fan will turn on, and the fuel mixture will be prepared based on the readings of other sensors. If at the same time the engine begins to work better, then the sensor definitely needs to be changed.

For the next check of the coolant temperature sensor, you will need diagnostic equipment. First, you need to check the temperature readings on a cold engine (for example, in the morning). The readings must correspond to the ambient temperature. A slight error of 3-4 degrees is allowed. And after starting the engine, the temperature should rise smoothly, without jumping between readings. Those. if the temperature was 33 degrees, and then suddenly became 35 or 36 degrees, this indicates a sensor malfunction.

Cooling system elements

The Lada Kalina cooling system has the following elements: water pump, thermostat, radiator, electric fan, pipes, expansion tank, water jacket and temperature sensor.

Radiator

One of the main elements of the cooling system, which provides direct cooling of the liquid that passes through the element. The part is cooled using a counter flow of air and an electric fan, which is located behind the radiator. Lada Kalina is equipped with 3-row radiators, which provide maximum cooling of the liquid.

The malfunction of this element may be due to contamination. Therefore, it is necessary to periodically clean the part. The most common method among motorists is cleaning using automotive chemicals. But, the most effective is to dismantle the radiator and clean it with steam or a special liquid under pressure.

Electric fan

The cooling system fan provides additional cooling of the radiator when there is not enough oncoming air flow. The most common malfunction associated with the fan is the failure of the fuse and coolant temperature sensor.

temperature sensor

This element ensures timely activation of the electric fan. The principle of operation of the sensor is very simple - I analyze the temperature of the coolant, it sends impulses to the electronic control unit, which, after analyzing the data received, decides whether it is necessary to use the electric fan. A malfunction of the meter can lead to overheating and even greater problems associated with deformation of the cylinder head.

Thermostat

One of the most important cooling elements for Lada Kalina and any other car. When the car heats up, the thermostat is closed, allowing coolant to circulate only in a small circle. After the engine has warmed up to 60-70 degrees Celsius, the thermostat opens wide and fluid begins to circulate through the radiator.

Water pump

The water pump circulates the “coolant” throughout the system. If the element is faulty, then the liquid heats up inside the water jacket of the engine without passing through the radiator, which causes severe heating of the engine and destruction of structural elements. Often, it doesn’t come to this, because the pump is running out and the pump is simply leaking. Replacing an element is quite simple with your own hands, which is what most car enthusiasts do.

Expansion tank and plug

The expansion tank serves as a kind of indicator of coolant in the system. So, it has a minimum and maximum mark on it, which indicate that the coolant should be in these aisles. Also, through the expansion tank it squeezes out the “coolant” in case of overheating.

The expansion tank plug is an element of the cooling system through which hot coolant is actually released into the system and pressure is relieved. Also, through this element the cooling system gases are discharged.

Pipes

Cooling system pipes are elements that serve as a connecting link between different structural parts. It is through them that coolant circulates from the engine to the radiator and vice versa. Failure of these elements can lead to fluid leakage, causing the engine to overheat.

Water jacket

The water jacket is an element of the engine and cooling system, which ensures the heat absorption of the engine coolant for subsequent removal and cooling. This system is located in the cylinder head and cylinder block. When carrying out a major overhaul, it is often discovered that this element has become corroded if the vehicle is operated on water.

Operating principle

The sensitive element of the coolant temperature sensor is a thermistor, i.e. a resistor whose electrical resistance changes depending on the temperature. High temperature causes low resistance, and low coolant temperature causes high resistance. The controller supplies a voltage of 3.3 V to the coolant temperature sensor circuit.

The controller calculates the coolant temperature based on the voltage drop across the DTOZH. The voltage drop is relatively high when the engine is cold and low when the engine is warm. Coolant temperature is used in most engine management functions.

If a malfunction occurs in the DTOZh circuits, the controller enters its code into its memory, turns on the warning light and the cooling system fan, and calculates the coolant temperature using a special algorithm.

How to check the sensor

DTOZH for Kalina has catalog article 23.3828; checking the element is mandatory if gasoline consumption increases and difficulties are observed when heating the engine. An enriched mixture will always flow into the cylinders, the radiator cooling fan will constantly work, which will lead to rapid wear.

If the element transmitting signals to the instrument panel fails, the indicator needle will stop moving and remain at zero.

Check the dismantled assembly with a multimeter by placing the element in a container (kettle, pan) with boiling water. As the liquid cools, the instrument readings will increase. How to check step by step:

Remove the unit from the car.
Set the multimeter to the ohmmeter position in the range of 100 Ohm–10 kOhm.
Connect the DTOZH outputs to the multimeter, lower it into boiling water, with the terminals located outside, only the head of the element is lowered into the boiling water, which in working condition comes into contact with the antifreeze or antifreeze in the system.
Check the table for the relationship between winding resistance and ambient temperature.

Temperature, °C	Resistance, Ohm
−40	100700
−20	28680
−10	16180
9420
+5	7280
+10	5670
+15	4450
+20	3520
+25	2796
+35	1802
+45	1188
+60	667
+80	332
+100	177

Checking the sensor that transmits temperature to the dashboard is carried out in the same way. The ohmmeter readings may differ from those indicated by 15–29 units.

Principle of operation

The design of the sensor is a fairly simple element. It consists of a bronze body and a plastic insert in which a thermoelement is placed. When heated, the thermocouple changes its resistance and sends readings to the ECU. When certain resistance readings are reached, the ECU sends a signal to turn on the fan and other functions for which the DTOZH is responsible.

How to dismantle

All work on removing and installing parts is carried out with the engine turned off and the negative terminal of the battery disconnected. Dismantling order step by step:

Loosen the screw securing the air hose coupling to the air filter housing. This will allow you to get to the instrument sensor. If necessary, remove the air filter housing for good access to the sensors.
Remove the screen or engine cover, using force, remove the cover from the latches.
Drain the coolant from the radiator. On Kalina, antifreeze or antifreeze is used. To do this, the fluid needs to be cooled, but experienced drivers replace it without draining the antifreeze. In this case, all replacement work will need to be carried out quickly and accurately. Therefore, if the sensor is changed for the first time, it is better to drain the coolant so that an air lock does not form in the system.
Disconnect the wire block.
Using a socket head or a 19 mm wrench, unscrew the sensor from its seat. If the coolant is not drained, antifreeze will flow out of the hole. Therefore, experienced drivers who are too lazy to drain it immediately clamp the hole with their finger and insert a new one.

Checking the cooling water sensor on the Lada Kalina

Car : Lada Kalina. Asks : Sasha Bolanenko. The essence of the question : how to check the sensor now?

Nice day again. Last time I asked where the sensor is located, I removed it and want to check it. Maybe it's not him at all. I stopped by to see an electrician, who gave me a hint that I could use a kettle to look at the readings. But which ones?

I don’t want to just buy another sensor, in case the problem is not in it, but in the device panel.

Checking the electrical circuit

Malfunctions in the cooling circuit system are not always associated with faulty sensors; in 70% of cases, the problem is a violation of the integrity of the wires. On Kalina, the block often suffers; the thin plastic at the entrance to the block rots and cracks. After disconnecting the pads from the sensors, the throughput of the circuits is always checked before dismantling the latter.

The ignition is turned off and the block is removed from the sensor.
The tester probe (multimeter) is connected to output “B” of the block, the second tester probe is located at ground.
The ignition turns on.
The monitor should display a voltage in the range of 4.8–5.2 V. These are indicators of the complete circuit.
Similarly, the performance of the circuit is checked by resistance. The tester probe is connected to terminal “A” on the block, the second one is connected to the ground of the car. The operating circuit will show a resistance of less than 1 ohm.

If the voltage does not correspond to the operating voltage, then the circuit is checked for an open circuit. The tester probe is connected to terminal “B” on the block and terminal “39” on the controller; if the voltage is normal, then there is a malfunction in the control unit.

The cooling circuit of the Lada Kalina engine is equipped with two temperature sensors, the correct operation of which determines the performance of the engine and its service life. You can diagnose and replace the control elements yourself; it will take about an hour of time and a little skill.