Lada Granta temperature sensor: where is it located and how to replace it

Old dashboard

This instrument panel was installed before June 15, 2014.

Find the engine temperature indicator here?

There is no engine temperature indicator on the old instrument panel. There is only an overheating warning light. On my previous cars, which did not have a temperature gauge, there were at least two warning lights: “cold engine” and “engine overheating”.

On the Grant, as planned by AvtoVAZ engineers, the engine should not be warmed up, and you can immediately start driving. Interesting savings. On our website there was a whole battle about this in the article: Is it necessary to warm up the engine before driving?

Car manufacturers allow the car engine not to warm up, citing global standards to prevent environmental pollution and save gasoline.

Read more about fuel consumption standards for the Lada Granta family of cars in the article: Grants fuel consumption on the passport and in reality, what is it like?

Ways to solve this problem

There are several ways to solve this problem. The simplest of them is to just hammer and drive like that. Most people do just that. You can flash the instrument panel, the result will be like this.

But in this car there is a hypothetical problem of the engine not heating up to operating temperatures, although AvtoVAZ management does not consider operating temperatures below 80 degrees a problem.

Installing a separate engine temperature indicator

The easiest and cheapest way is to install a separate temperature indicator instead of the standard free button plug.

Temperature gauge installed in place of the standard plug next to the cigarette lighter

Installing such a digital indicator will not take much time.

Make it a rule to always turn off the power to your vehicle when doing any electrical work!

1. You will need to remove the panel trim (if you don't have air conditioning, the ideal location would be to the side of the heated rear window button).
2. Next, disconnect the ground from the battery.

   
   Disconnect the ground from the battery

3. We remove the glove compartment lid and pull out the diagnostic connector so that we have free access to it.

   
   Diagnostic connector

4. We insert the digital indicator instead of the plug and connect the wires according to the instructions to the diagnostic connector using clamp terminals.

   
   Connect the indicator to the diagnostic connector

5. We connect the ground, start the car and check the operation of the device. Checking the operation of the indicator with the car running
6. Carefully put everything back together in reverse order.

This indicator is sold in most car stores, the cost does not exceed 600 rubles.

Viewing the temperature using a smartphone (tablet)

This method will require you to purchase a diagnostic cable that works via bluetooth. You will also need an Android device that supports bluetooth connection.

1. Remove the diagnostic connector.
2. Connect the diagnostic cable there.
3. Install the “Torque” program or a similar one on your cell phone.
4. Launch the program on your phone, start the engine and try to establish communication with the adapter.
5. Once the connection is established, you can view the data that is transmitted from the sensors to the ECU.

New instrument panel

New instrument panel combination (from June 16, 2014)

If your car was manufactured after June 15, then the engine temperature should be displayed in the on-board computer. If it is not there, then you need to reflash the instrument panel.

Source: https://carfrance.ru/kak-posmotret-temperaturu-dvigatelya-lada-granta/

Replacement

To install a new cooling sensor on the LADA 2115 Samara, you need to select a flat area. You will need a tool: open-end and spanner wrenches (19 mm, 13 mm, 10 mm, 8 mm), as well as a large medical syringe 100–250 ml, and a 15–20 cm dropper tube to it. It is recommended to buy the original sensor itself, here its number is 21120–3851010–05. It is easy to replace the DTOZH yourself. The step-by-step process looks like this:

1. Allow the engine to cool to at least 40 °C.
2. Use a syringe to pump out antifreeze/antifreeze from the expansion tank (so as not to drain the coolant).
3. Unscrew the negative terminal of the battery (10–13 mm wrench).
4. Disconnect the plug from the air flow sensor.
5. Unscrew the air filter housing (8 mm wrench).
6. Carefully removes the “pan” and moves it to the right.
7. Disconnect the plug from the DTOZH.
8. Unscrew the sensor (19 mm spanner).
9. Cleaning the landing area.
10. We screw in the new DTOZH.

Let's collect everything in reverse chronology. It is not recommended to use sealant, as the copper ring is perfectly crimped, ensuring a tight seal.

Replacing the coolant temperature sensor on Grant

The coolant temperature sensor (not to be confused with the engine temperature indicator sensor) is installed on the Lada Granta car - directly on the thermostat housing.

It is this sensor that is responsible for the cold start of the car and prepares the mixture depending on the coolant temperature.

In other words, at a lower temperature of the coolant (in frost), one mixture is required, at a higher temperature, another.

If problems with starting are observed in different temperature ranges, it is necessary to check this particular sensor on the Grant. To do this you will need the following tool:

1. Phillips screwdriver
2. The head is 19 mm deep
3. Extension
4. Ratchet handle

Replacing the DVT on a Lada Granta car

To understand where this sensor is located, its location is clearly shown in the photo below.

So, the first thing you need to do is disconnect the power connector from the sensor itself, first bending the latch to the side, and the result of this action is shown in the photo below.

Next, you can begin to unscrew the sensor using a deep socket and an extension with a ratchet.

It is worth noting that for greater convenience it is necessary to move the inlet pipe to the side by unscrewing it from the mass air flow sensor.

After the old coolant temperature sensor is removed, you need to install a new one, first apply thread locker.

We install the new one in the reverse order. The price of the sensor is no more than 300 rubles for the original one produced by AvtoVAZ. Then we connect the chip into place and start the engine to check the functionality of the system.

Source: https://zarulemvaz.ru/zamena-datchika-temperatury-ozh-na-grante/

Car outdoor thermometer: Can the readings be trusted?

An outdoor thermometer in a car is not really a thermometer that we are used to. Technically, a device that determines the temperature outside measures it using electric current. This device is called a thermistor. Or a thermistor. Unlike conventional thermometers, which measure the temperature of the surrounding air by the expansion or contraction of a liquid (such as mercury or alcohol), the thermistor in modern cars determines temperature by measuring electrical resistance, which changes depending on the temperature. In many modern cars, the ambient temperature sensor is located at the front of the car. Most often, manufacturers install a thermistor somewhere near the radiator grille or air intakes in the bumper. Unfortunately, due to the layout of many cars, there is a problem - the wrong outside temperature is displayed on the dashboard. What is the reason?

Any of us who walked on the sand on a hot day probably felt the warmth emanating from it. Moreover, as a rule, the surface of the sand is always warmer than the surrounding air. But this is not surprising, since the sun always warms the earth more than the air.

This means that the thermistor in your car may be located too close to the ground. Well, since the temperature sensor reacts to heat, its close location to the surface of the earth ultimately leads to erroneous calculations of the ambient temperature. As a result, in many cars the outside temperature displayed on the dashboard is almost always 1-2 degrees higher than it actually is.

The error is especially visible in hot weather on a summer day, when in direct sunlight due to overheating of the asphalt, a thermistor installed in the front of the car under the influence of the hot road surface does not determine the real ambient air temperature.

At night, the accuracy of the outdoor temperature sensor is much better, since during the night hours the surface of the earth cools down a little and can actually become equal to the air temperature. As a result, the thermistor does not take on excess heat at night and, accordingly, the machine’s computer receives correct information about the air temperature.

Including a more accurate outside air temperature on the car's dashboard can be displayed while driving at high speed, since heat from the road surface will be dissipated due to strong air currents.

Unfortunately, incorrect outdoor temperature readings often confuse not only the driver, but also the electronics of modern cars. For example, in many cars, electronics can warn drivers about the danger of ice formation. For example, in some cars, the electronic system begins to warn about slippery roads when the outside temperature drops below +3 degrees.

Also, in many cars, electronics can warn of zero or negative temperatures.

As a result, if the temperature sensor does not correctly determine the temperature outside, the driver may not receive a timely warning about ice, etc. Accordingly, this affects the safety of driving.

As a result, despite the presence of a temperature sensor in many modern cars that measures the temperature outside, this option is not accurate and not very useful, since there is a significant error in the accuracy of the data.

The most interesting thing is that you can find out more accurate weather, for example, on your smartphone on the Internet or using various applications. So if you need an accurate outside temperature, don't rely on the temperature displayed on your dashboard.

The problem is that it does not show the ambient temperature correctly, or to be more precise, the temperature readings dance from -30 to + 25. And this despite the fact that the real temperature is +26. I tried disconnecting the DOME engine compartment fuse (to reset the errors), but the problem did not go away. What to do, tell me?

Grant engine temperature sensor. We install it ourselves

Every owner of a Lada Granta car has encountered its main drawback - the absence of an engine temperature sensor on the panel. The task of the AvtoVAZ management was to make Grant accessible, the engineers did it “excellently”, saving even on this device. The emphasis was on cheapness, so we tried.

Soon, however, everything was corrected - on models of a higher price and advanced configuration of the Lada Granta liftback 21911, 21912, 21917, an engine temperature sensor has already appeared and helps monitor the condition of the internal combustion engine.

However, what should owners of earlier models do? The overheating indicator lamp installed on cars is not informative enough.

In winter, it is impossible to determine whether the engine is warm enough to start driving, and in summer, the overheating warning light may come on too late.

The thermostat is the weak point of Lada Granta cars, and it would be much more effective to determine its malfunction at a very early stage by assessing the behavior of the TD sensor needle, but...

It was these problems that prompted some motorists to look for answers to the question: “How to install an engine temperature sensor on a Grant?” You can, of course, contact dealers. For a fee, specialists will equip everything you need. But there's no need to rush. It is not at all difficult to equip your car with this device yourself. To make sure of this, let's look at the whole process step by step.

First, you should purchase an installation kit for the coolant temperature sensor (engine). If you don’t want to go to a car store far, or don’t want to, you can easily order the necessary kit in an online store with home delivery. It includes:

1. temperature indicator,
2. plastic case for it,
3. the sensor itself;
4. fastening clamps.

Once you have the kit in your hands, it's time to head to the car. To see the place where the Grant engine temperature sensor will be attached, the negative terminal is removed from the car battery, and behind it the air filter is disconnected and removed.

This will open an overview of the pipe that leads from the thermostat. Coolant circulates through it during operation.

It is necessary to carefully cut the pipe and insert the temperature sensor inside along with the adapter (buy at a car store), then securely tighten it with clamps.

The wires are dealt with as follows: the first is the ground wire, it is attached to the engine (body), the second is pulled directly into the cabin.

An indicator with an arrow for the temperature sensor can be installed on the dashboard near the windshield next to the instrument panel. Visually this is very convenient, because... It is located close to eye level, and a quick glance will be enough to control the temperature level.

But what should you do if you may need to fix the navigator in approximately this place? The second option for mounting the sensor indicator is even more aesthetically pleasing.

Many motorists install the device in a cup holder next to the gearbox, but the panel itself will need to be slightly modified.

Of course, in this case you will have to look for a place for a glass of coffee, but this will be a huge plus: the sensor indicator in your cabin looks very harmonious. Now you can fully control the engine temperature and monitor how the thermostat behaves.

What is the purpose of the inlet air temperature sensor?

Another temperature sensor that any vehicle is equipped with is the intake air temperature sensor. At first glance, its role is quite insignificant, and most motorists may not even be aware of its existence. In fact, the uninterrupted operation of the car engine largely depends on the performance of this unit. Most modern temperature sensors are designed based on a semiconductor thermistor, so there are practically no problems during operation.

If difficulties arise, as a rule, they are as follows. During long-term operation, there is a discrepancy between the temperature readings on the sensor body and its electrical resistance. This leads to a smaller error in calculating the actual temperature of the incoming air. As a result, the computer, which calculates the parameters of the fuel mixture, sharply reduces the air supply and at the same time increases the “portion” of fuel. The resulting mixture entering the cylinders is “incomplete,” which makes its combustion process difficult. This results in unstable engine operation; in addition, an overly enriched mixture easily causes spark plugs to flood, which makes starting the engine impossible.

There are no recommendations regarding the frequency of checking this sensor, and each car owner decides for himself

To independently check the functionality of this important incoming air temperature sensor, you will need an ohmmeter and a table with normal resistance values, which is included in the instructions for the car itself. The test begins with the engine cold and continues with the engine running until the cooling fan starts. If there is reason to believe that the sensor is faulty, it makes sense to replace it with a new one

The cost of the device is low, and all replacement work is completed in a matter of minutes and does not require special skills or experience

If there is reason to believe that the sensor is faulty, it makes sense to replace it with a new one. The cost of the device is low, and all replacement work is completed in a matter of minutes and does not require special skills or experience.

An external air temperature sensor (ATS) is installed on cars to ensure driver comfort.

AvtoVAZ specialists began to include an external air temperature sensor in the car’s on-board computer. It is included in the standard equipment of the VAZ-2110. The fifteenth model already has a VDO dashboard with two windows and a temperature display on the display.

Various options for installing DTVV on a VAZ-2110 car are widely used. The most suitable sensor for this model is the one with catalog number 2115-3828210-03 and the cost is around 250 rubles. Its serviceability is usually checked using a test: when the part is cooled and heated, the current resistance indicators change.

DTVV must be insulated from moisture, and direct sunlight must also be prevented. The sensor must be protected from heat coming from the vehicle's engine compartment. Therefore, the most suitable location for mounting the device is at the front of the vehicle or in the immediate vicinity of the towing eye.

The sensor itself is equipped with a pair of contacts: one of them is directed to ground, and the second gives a signal about a change in temperature. The last contact is made into the car interior through a hole next to the fuse box. The VAZ-2110 is equipped with on-board computers in two versions: MK-212 or AMK-211001.

In such on-board computers, the second contact of the sensor must be connected to C4 on the MK block. In this case, I take out the outgoing free wire and then carefully insulate it.

If the DTVV is not connected correctly or there is an open circuit, the following will be displayed on the on-board computer display: “- -”.

It is quite easy to connect DTVV to a VAZ-2115, since this car is equipped with a VDO panel with two displays.

The sensor wire is attached to the red block X2 in socket No. 1 on the car’s dashboard.

Sensors on the Lada Granta engine

To ensure the normal operation of all vehicle components, modern cars use many different regulators. In this article we will talk in more detail about domestic Lada cars. Where is the speed sensor, coolant and other controllers on the Lada Granta and what functions do they perform - read below.

Sensor locations

Where is and how to find this or that regulator on Grant, Priora, Vesta or Largus? In fact, the location of the devices on these car models is identical. Below is a diagram identifying all devices.

Characteristics of sensors

Speeds

The Lada Granta speed sensor is located on the gearbox housing. This regulator is directly related to the transmission of data about how fast the vehicle is moving, how the car is idling, and what kind of gas mileage it is driving at.

To find this controller on a Priora or Grant, you need to open the hood and remove the air supply hose that goes from the air filter element to the throttle. Having done this, at the bottom of the gearbox housing you can see the controller with a wire connected to it. To replace the device, you simply need to disconnect the wiring and remove it from the installation location, and then replace it with a new one.

Removing DTOZH from a car

A coolant temperature sensor is necessary to measure the temperature of antifreeze in the cooling system. In accordance with the data from the temperature regulator on the Grant, the control unit adjusts the crankshaft speed, adjusts the composition of the combustible mixture, as well as the ignition timing.

As practice shows, such a device rarely fails, but in some cases it can give incorrect readings. Located in the engine compartment, in particular, in the thermostat cover, the controller has its own “diseases”. The wiring at the base of the connector may fray, resulting in the need to replace the DTOZH.

The mass air flow controller is located behind the air filter element of the power unit, it is also often called a flow meter.

The main purpose of the device is to monitor the volume of air flow that enters the vehicle engine.

In accordance with the data received, the on-board computer determines the required volume of gasoline, which is necessary to maintain a normal air-fuel ratio.

The idle speed sensor is one of the regulators designed to monitor and control the operation of the power unit. If the device breaks down, the motor immediately begins to work incorrectly - it will trip and the power will decrease.

In turn, the needle on the tachometer will jump sharply from one value to another. The element itself is located on the throttle, in particular on its lower part.

To get to it, you need to free the throttle valve from the pipes, there are four in total.

To replace and install a new IAC, you will need to disconnect the wiring from the regulator itself, as well as the throttle position controller.

Sveta

As for the light sensor, it is installed in the same housing with the rain regulator. Its purpose is to activate and deactivate lighting based on the current state.

For example, if it gets dark outside or you enter a garage or poorly lit tunnel, the device should automatically turn on the headlights along with the side lights.

The controller itself is not repairable, so if it fails, the only option is to replace it.

Clutches and brakes

The clutch sensor allows you to determine the position of the pedal. When the pedal is not depressed, the regulator turns off the load adjustment on the power unit. The device is located in the pedal assembly, in the same place where the brake sensor is located.

The operating principle of the latter is quite simple:

• when the pedal is released, the rod is located inside and clamps the floating contact to the top;
• when the pedal is depressed, the rod clamps the contact to the bottom of the group.

As practice shows, one of the main problems of this controller is the poor quality of the contact itself. It can simply catch on the spring, and ultimately the control unit will receive an impulse to apply the brake.

The vast majority of modern cars, including the Lada Granta, are equipped with digital sensors. “Scanners” transmit readings online to the electronic control unit of the ECU.

The on-board computer compares the received data with the programmed ones. In case of discrepancy, an error is indicated on the dashboard. The owner of the car, seeing a system error, decides on the nature of the breakdown and visits a service station to order a comprehensive diagnosis.

ATTENTION! A completely simple way to reduce fuel consumption has been found! Don't believe me? An auto mechanic with 15 years of experience also didn’t believe it until he tried it. And now he saves 35,000 rubles a year on gasoline! Read more"

What temperature sensors are installed on the Lada Granta, where are they located, price

In total, over ten digital and mechanical sensors are installed in the Lada Granta. The following deserve special attention and control from the driver:

• Coolant temperature sensor (hereinafter referred to as DTOZH);
• Environmental DT (hereinafter referred to as DTOS).

The functionality of the devices and the accuracy of data display depend on the condition of the technical equipment and the safety of driving a car.

DTOZH is designed to monitor the temperature of antifreeze in the cooling system circuit of the power unit. After receiving data about the “degree” of the engine, the ECU increases or decreases the speed of the power unit in order to adjust the temperature.

The quality composition of the fuel mixture depends on the accuracy of the DTOZ readings. The service life of the sensor is unlimited, with the exception of mechanical damage or manufacturing defects.

The standard installation location is the thermostat cover. The base part is screwed into the thermostat housing. Two power supply cables extend from the top.

A melting element is installed inside the DTOZh base. As soon as the antifreeze temperature reaches 90, the contacts close and the on-board computer signals an error.

Catalog articles, prices of temperature sensors for Lada Granta

Installed at the front bumper mounting location, to the left of the central air duct. The DTOS shape is conical with two contacts on the back side.

The fuse in the mounting block at number 32 is responsible for the operation of the DTOS. The first sign of a malfunction is the absence of temperature readings on the dashboard.

How to independently replace temperature sensors on a Lada Granta car

• Set of automotive tools, key set to “19”;
• Rags;
• Additional lighting as needed;
• New measuring device.
• We install the technical equipment within 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 two terminals from the DTOZH
• Use the key to “19” to unscrew the DTOZH;
• We insert a new sensor in place of the faulty one and put on two terminals.

We start the engine and check the operation of the equipment. We replenish the missing amount of antifreeze (optional).

• Automotive tool set;
• Rags;
• Additional lighting as needed;
• New DTOS.
• We install the machine on a level platform, provide priority safety measures, secure the rear row of wheels with wheel chocks;
• We hang the front part of the car with jacks. We use a hydraulic lift if available;
• Unscrew the six screws along the lower perimeter of the front bumper;
• We remove the wheels, unscrew three screws on each side in the wheel arches;
• We also unscrew the five fasteners in the center of the front bumper;
• Remove the bumper;
• Carefully disconnect the contacts, limit switches from the dimensions, lighting, turn signals;
• Lower the front bumper to the floor;
• To the left of the center of the cooling system radiator, a DTOS is installed on a torsion beam;
• Carefully disconnect the power terminals;
• We snap off the sensor at the base;
• We are removing the fastening. Replace with a new one as needed;
• We install a new measuring device;
• We put on terminals and limit switches;
• We assemble the front bumper, screw the fasteners, put on the lighting system terminals;
• We start the engine, although you can limit yourself to activating the ignition to test the DTOS functionality. DIY replacement completed.

Grant no engine temperature gauge

Lada Granta (2019). The engine is overheating (the engine overheating warning light is on)

Causes of engine overheating

1. Lack of fluid

The most common cause of overheating is insufficient coolant in the cooling system. Liquid, as you know, will always find a way to leak out if there is even the slightest hole. In a cooling system with a bunch of tubes, pipes, clamps and gaskets, there may be several such holes. So the antifreeze gradually leaves both the expansion tank and the radiator of the cooling system. READ ALSO: How to protect yourself and your car from heat and sun This problem can be identified by white streaks on the outer surfaces of the engine, drops of antifreeze under the car after a long period of parking. All leaking elements of the cooling system must be replaced.

2. Problems with the radiator

If the fan is driven by a belt from the crankshaft, the tension of this belt may weaken. If the fan drive is electric, the temperature sensor may malfunction. Check these elements - they often provoke further problems. Then make sure the cooling system radiator fins are kept clean. If dirt has stuck to them, then overheating will occur very quickly - it is best to wash the radiator with a strong stream of water once every 2-3 years. READ ALSO: How to prepare your car for the start of the hot season

3. Problems with the thermostat

As deposits accumulate in the cooling system, the mobility of the elastic element of the thermostat is lost, and it stops responding to the temperature of the antifreeze leaving the engine. Then it all depends on the position in which it hangs - either it will constantly begin to drive liquid along a large circuit, and the engine will be more difficult to warm up; or in small ways, then overheating is inevitable. Very often, the thermostat jams after tap water has been poured into the cooling system - it is hard, with a high content of salts and minerals, which are immediately deposited in the cooling system. If you had to do this, then you need to replace it with antifreeze as quickly as possible. But you still need to carry water with you: you often have to urgently add coolant (preferably distilled). A faulty thermostat needs to be replaced urgently. But if it is expensive, then at least wash it by pouring a hot mixture of water and citric acid, Calgon or “Mole” into the cooling system - these substances clean well and dissolve everything unnecessary.

What to do if you overheat

Causes that can be identified and some that can be eliminated

Combustion chamber seal failure

What not to do when the engine is boiling

Prevention

In addition, overheating of the engine can occur if the wrong mode of operation of the motor is selected. For example, if you constantly drive only in lower gears and at high speeds, then the likelihood of the engine boiling increases, especially if there are deviations in the operation of the cooling system. In the cold season, some errors are not affected by low temperatures, but this does not mean that engines boil only in the summer.

Lada Granta displays temperature data on the instrument panel

As you know, AVTOVAZ removed the internal combustion engine temperature scale from the panel on the new Grants and Kalinas and left only the overheating light, but if it lights up, then this is already the beginning of the end.

Therefore, in luxury trim levels, the coolant temperature display was added to the on-board computer readings, and for all others, only a collective farm is assumed in the form of installing additional screens in place of button covers or external On-board computers.

To fix this problem, you can update the dashboard firmware of Lada Granta and Kalina 2 cars.

First, we find out what version of the firmware is embedded in the instrument panel.

For this:

1. With the ignition off, press the daily mileage reset button on the panel and, without releasing it, turn on the ignition, the service mode of the panel is activated, in which all the indicators light up and the arrows begin to move
2. release the button and press again. Numbers will appear on the display, this is the software version

Now let's decipher them

The first numbers (2190 or 2192) indicate the car model (Granta or Kalina 2). This is followed by the numbers 00, 20 or 40, which stand for “standard”, “norm” or “lux”, respectively.

Now, using the table below, you can see if it is possible to flash your panel so that it displays the temperature.

FIRMWARE VERSIONS OF INSTRUMENT PANELS LADA GRANT AND KALINA 2

1. Here is an example of firmware for the Grants Norma panel. Initially, the panel is sewn with firmware 090
2. We take out the panel, remove the back cover, and connect the programmer to a special connector on the panel board.

3. We upload the new firmware and go try it in the car. As you can see, the version has been updated and now firmware 092 is installed

4. And using the buttons on the right switch we switch the on-board computer readings and see that the temperature display has appeared.

Source: https://avtosfera74.ru/lada-granta-temperatury-na-panel-priborov/

How to independently replace temperature sensors on a Lada Kalina car

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

• 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.

We don’t need any special tools; we’ll limit ourselves to a screwdriver, wires, terminals, and a new device.

Sequence of actions when replacing DNT with your own hands:

• We place the Lada Kalina on a flat platform, squeeze the parking brake for safety reasons;
• Open the hood and remove the power terminals from the battery. This is necessary in order to prevent short circuits in the circuit during work;
• To the left (right) of the center of the front bumper, screw the sensor onto one self-tapping screw;
• We lay the power cables inside the engine compartment through technological holes;
• We install wiring under the dashboard;
• We remove the instrument panel and connect the outputs to the CAM bus;
• We assemble the structure in reverse order;
• We put the power terminals on the battery.

We start the engine and check the functionality of the measuring device. Equipment replacement has been completed.

Lada Kalina 2. Lada Kalina 2. REPLACING THE OUTDOOR TEMPERATURE SENSOR

You will need: keys “10”, TORX T20.

1. Disconnect the wire from the negative terminal of the battery.

2. Remove the front bumper

Temperature sensor A is mounted on the lower cross member of the body.

3. Press the sensor wiring harness connector lock and disconnect the connector from the sensor.

4. Squeeze the latches on the sensor body and remove it from the hole in the bracket.

5. Install the outside temperature sensor in the reverse order of removal.

Lada Kalina 2. REMOVAL AND INSTALLATION OF CABIN AIR TEMPERATURE SENSOR

To replace the interior air temperature sensor installed in the interior lighting housing, perform the following work.

1. Disconnect the wire from the negative terminal of the battery.

9. Install the sensor in the reverse order of removal.

To replace the interior air temperature sensor

installed in the climate control unit, perform the following work.

1. Disconnect the wire from the negative terminal of the battery.

4. Disconnect the sensor wiring harness block from the control unit connector and remove the harness from the holder.

5. Turn the sensor housing counterclockwise and disconnect it from the unit.

6. Install the sensor in the reverse order of removal.

Installing an outside temperature sensor on a Lada Granta

The outside air temperature sensor, despite its apparent simplicity and low usefulness, is actually quite an important element of driving safety. In spring or autumn, when the roads are often filled with melt water, driving a car at zero temperatures is especially dangerous.

From the driver's seat, the asphalt may appear dry or simply damp, when in fact the asphalt is coated with a glaze of ice.

The outside air temperature sensor will help predict these events, because if it shows the temperature below zero and the roads are wet, then most likely the asphalt will be extremely slippery and you will need to choose a different driving style and increase the distance to the car in front.

However, in order to save money, AvtoVAZ does not equip its cars with an outside temperature sensor in the basic configurations of the Lada Granta and Lada Kalina, but the ability to install it yourself is present in a number of cars.

To check the possibility of installing an outside temperature sensor on your car, you will need to check the firmware version of the instrument cluster.

To do this, with the car turned off, press the daily mileage reset button on the instrument panel and turn on the ignition. The instrument panel will go into self-diagnosis mode.

Press the odometer button again once and you will see the instrument cluster firmware version.

If your version is 090 and higher, then the instrument cluster is available for installing an outside temperature sensor. All versions that have a serial number below 090 do not provide for the installation of the corresponding sensor.

If in your case the instrument cluster is available for installing an outside temperature sensor, purchase the required sensor DVT-2115-3828210-03 from a car store.

The manufacturer provides a standard mounting location for the temperature sensor; it is located in the lower part of the engine cooling radiator on the frame of the bulkhead amplifier. The mass for the sensor is taken in the same place, there is a corresponding nut nearby.

The installation location is clearly visible with the front bumper removed. We marked in red the installation location of the outside air temperature sensor, and in black the installation location of the sensor mass.

We will need to run the power wire into the car interior and connect it to the instrument panel. You can insert the wire into any available rubber plug on the front panel, for example, into the clutch cable plug.

Having removed the instrument panel, we connect the positive wire to the 25th leg of the instrument panel connector. The installation location is marked with an arrow.

If the work is carried out correctly and according to our instructions, then when reassembling and connecting the instrument panel, the on-board computer menu item will contain a corresponding item displaying the temperature outside the car.

If the temperature indications do not appear, unscrew the negative terminal from the car battery for 5-10 minutes to reset the settings of the instrument panel and electronic control unit, after such a procedure the temperature indications should appear.

Source: https://olade.ru/ustanovka-datchika-naruzhnoj-temperatury-na-ladu-granta

External temperature sensor on Kalina

This device is used, as a rule, to optimize the operation of climate control and, together with a temperature sensor in the cabin, help maintain an optimal microclimate inside the car, thanks to which the trip becomes comfortable.

The outside temperature sensor is located behind the bumper radiator grille, which will need to be removed if there is a need to replace the device.

You should not lose sight of the entire system in which the device operates - these signs may also indicate that the wiring connecting the detector to the computer is damaged, or the contacts have oxidized.

For what reason can the Kalina ambient temperature sensor break down?

Due to its rather open location, this device can be damaged by a variety of factors:

1. mechanical reasons - a stone hitting the detector body can easily damage it;
2. low ambient temperatures;
3. the third reason, already mentioned above, can lead to the device breaking down - malfunctioning wiring or oxidation of contacts.

Replacing the sensor

• The process of installing a new device should begin with a complete blackout of the car (disconnecting the battery);
• after this, the radiator grille is removed (nothing complicated, just unscrew two bolts);
• the sensor is de-energized and disconnected from its socket;

• the serviceability of the device is checked and, if it breaks, a new one is installed in its place;
• the wires are connected, the grille is put in place, the battery is turned back on;
• All that remains is to start the engine and check the operation of the climate control.

A special device will help you verify the malfunction of this device - a multimeter in ohmmeter mode, which is used to diagnose thermistors.

On all modern LADA cars, depending on the configuration, an external air temperature sensor can be installed, which transmits readings to the instrument panel. If the instrument cluster shows incorrect outside temperature values, then this sensor may be faulty. Before replacing, check it with a multimeter.

Where is the air temperature sensor located:

• on Lada Granta/Kalina/Priora in the lower cross member of the body (photo);
• on Lada Vesta/XRAY in the lower left corner of the engine cooling radiator deflector (photo).

To remove it, in some cases it may be necessary to remove the front bumper and engine protection.

How to check the ambient temperature sensor? The easiest way is to replace the sensor with a known good one. If you have an ohmmeter, you can measure the resistance at its terminals and compare it with the data from the table:

On a Lada Vesta car, to check the sensor, it is proposed to assemble an electrical circuit:

Then apply voltage U=3.2 V ±1% to the sensor through a constant resistance R=4420 Ohm ±1%, which simulates the instrument cluster. Using the voltage Ux, determine the resistance of the sensor. Data to check in the table:

Manufacturer's recommendations: Check the sensor by immersing the sensor in a reservoir with silicone liquid at a certain temperature, after 3 minutes of exposure, measure the voltage Ux.

Note: In summer, in traffic jams, the readings of the outside air temperature may be too high, because... the sensor is not blown with air, and is heated by the hot asphalt and engine.

If the dashboard does not show the ambient temperature and the sensor is working properly, then there is a break in the wiring or poor contact.

Let us remind you that we previously looked at how to install an outdoor temperature sensor yourself.

Replacing the coolant sensor Lada Priora

For the cooling system of any car, including the popular Lada Priora, it is not the most pleasant moment to be stuck in a traffic jam for a long time. When the car moves without long periods of downtime, the temperature load is removed by the oncoming air flow. There is no such flow when idling. When overheating, the radiator fan automatically turns on, but only if the coolant temperature sensor is working properly. This is a very necessary functional device for a car.

If the sensor does not work, replacement is required. In this material we will analyze in detail how the device works and where it is located. No less useful will be information on how to change this sensor on a Lada Priora. To replace, you will need a certain set of tools; such a tool is not a problem for a hundred; it is available in any car service center.

How the cooling system works on Priora

The system we are considering in the popular Lada Priora works by circulating fluid, as expected, through the radiator. The temperature decreases solely due to airflow. What types of blowing are there:

1. The look is natural. As the name implies, in this case the natural air flow cools the radiator while driving.
2. Kind of forced. When excessive heating occurs, the built-in fan is activated.

Diagnosis of errors

When you begin to notice something unusual in the behavior of your car, or there are obvious problems in its operation, then it certainly makes sense to have it diagnosed. Naturally, the OBD-II diagnostic connector will show errors most efficiently and accurately, however, not everyone has sockets to control this connector and has to use the standard one.

In order to enter self-diagnosis mode, you must:

1. Turn off the ignition.
2. Click on the daily vehicle mileage button.
3. Then, continuing to hold it, turn the key in the lock.
4. Thanks to this, all available indicators will light up, and the dial indicators will go into self-test mode and show data from zero to maximum.
5. When this happens, use the button located on the steering column switch and use it to switch the data on the instrument panel.
6. To read the fault codes, we need the last one - the third screen. Unambiguous error codes will be displayed there.

Displaying the error code on the third screen of the bookmaker. The photo shows error 4 (faulty coolant temperature sensor).

Error codes (decoding)

These are the most common error codes that can appear if there is a malfunction on the Lada Kalina.

Code Explanation 2 Excess of voltage in the vehicle's on-board network. 3 Malfunction of the gasoline level sensor in the fuel tank

Possible circuit break. 4 When this code appears, the car owner needs to pay attention to the operation of the antifreeze temperature sensor. There is also a possibility of a circuit break. 5 There is a problem with the outside temperature sensor. 6 The control unit has detected engine overheating

It is recommended to deal with this problem before further operation of the car. 7 Emergency lubricant pressure in the internal combustion engine is reported. 8 If you see this code on the dashboard, then you need to check the functionality of the brake system. The on-board computer recorded an error or breakdown in its operation. 9 The on-board computer reports that the battery charge is too low. It is recommended to perform a more thorough check of the battery. E An error has been reported in the data packet stored in the EEPROM.

Checking the system using special equipment

If the system is checked through a diagnostic block using OBD-II, then the code combination will consist of four characters, preceded by a letter at the very beginning.

P - indicates a problem with the engine or transmission. C - displayed when an error occurs in the “running”. B - when such a letter designation appears, you should pay attention to the serviceability of the central locking system, airbags, and power windows.

The second digit means:

• 0 – common code for OBD-II;
• 1 – number of the car manufacturer;
• 2 – number of the car manufacturer;
• 3 – reserve code.

The third character refers directly to the type of failure:

• 1 – malfunction in the air supply system and fuel system.
• 2 – similar to code “1”.
• 3 – failures and malfunctions in the ignition system.
• 4 – auxiliary control.
• 5 – malfunctions during idle operation.
• 6 – malfunction of the ECU or its circuit.
• 7 and 8 – malfunction in the transmission.

Grant temperature sensor: where is the DTOZH located on the Lada

First, it’s worth understanding why temperature meters are needed in a car. It is completely clear what internal and external air temperature meters do.

They carry out their measurements, transmit a signal to the car’s ECU, and thanks to their work, the car either carries out climate control, or regulates the operation of the car’s mechanisms, or simply displays the obtained measurements on the dashboard (however, this is often done bypassing the ECU altogether).

Why, for example, do you need a coolant temperature sensor (DTOZH)? His work, although it seems just as obvious, is actually deeper in nature.

So, before antifreeze enters the engine, it passes through a meter, which records its temperature and sends it to the main computer. These measurements serve as analytical data for the processor, giving it an understanding of the efficiency of the heatsink.

After all, the coolant travels a long way, through the engine to the radiator, and then, wobbling through its tubes, returns to the engine, where it is re-measured.

The radiator is designed in such a way that air flows counter to the car cool the antifreeze without unnecessary costs on the part of the car. However, in hot weather or standing in a traffic jam, this may not be enough, and then the computer decides to turn on additional cooling in the form of fans located inside.

At the same time, the Lada Granta DTOZH, with its measurements, helps the computer determine the need for additional fuel injection. Although more often devices that measure incoming air or outgoing air (exhaust) are responsible for this.

As a result, the main positive criteria for the work of the DTOZh include:

1. reduction in fuel consumption;
2. reducing wear on machine mechanisms;
3. improving vehicle performance and avoiding overheating.

This can also include bonuses such as notification to the driver or analysis of the operation of one or another form of coolant. But this already depends on the ability of the drivers themselves to recognize such signals.

How does the Grant temperature sensor work?

The coolant temperature detector in the Lada Granta is installed on the thermostat housing. To work with it, you will need standard tools like a Phillips screwdriver, two pairs of hands, and perhaps a 19 mm deep socket to simplify the work.

The dismantling of the meter in the Lada Granta itself takes place in several stages:

• we find where the device is located, remove the air filter that prevents us from getting to it;
• disconnect the wires from the meter;
• remove the connector from the detector;
• Let's start unscrewing the device.

Advantages of the E39 temperature sensor

Before dismantling, be sure to turn off the power to the car by removing the terminal from the battery. After this, be sure to drain the coolant. Failure to comply with any of these conditions poses a threat to your life and health.

Installation of a new device occurs in reverse of its dismantling. That is, they screwed it in, put the wires back in place, and put the air filter back. After that, we poured back the antifreeze and connected the electricity.

However, two installation nuances should be remembered. The first is to convince yourself of the quality of the seal of the new sensor or add your own sealant (coolant should not leak out while the car is running).

Well, the second comes out of the first - start the car and make sure there is no antifreeze leakage.

Bottom line

Repairing the Lada Granta DTOZ is easy and simple. At the same time, the benefits of the device are difficult to overestimate. Therefore, the logical conclusion is made that you should not neglect replacing a failed meter. Replacement should be done immediately.

The absence of a working DTOZh leads to the immediate activation of the additional cooling system, even if there is no need. As a conclusion, this leads to unjustifiably high fuel consumption during vehicle operation.

Source: https://alertok.ru/oborudovanie/datchiki/kak-zamenit-datchik-temperatury-na-grante.html

What temperature sensors are installed on the VAZ 2115

Modern cars are equipped with controllers to receive data of a certain content and send impulses to the electronic control unit for further processing and decision-making. Sensors are used in almost all systems and mechanical components of a vehicle to monitor:

• temperature of the environment in the system;
• amount of fuel;
• air pressure and flow;
• exhaust gas composition;
• outside air temperature.

There are not many temperature sensors installed in the VAZ 2115 car.

DTOZH (coolant temperature sensor).

It is characterized by simplicity of design and durability. It is a resistor that changes the resistance value depending on fluctuations in the temperature of the liquid phase: at low temperature readings, the resistance will be high and, vice versa.

The electronic unit uses information received from the thermostat to control the crankshaft speed and the air-fuel mixture ratio, as well as to select the ignition timing.

In most cases, temperature sensors fail due to internal problems, sending false information to the control unit. This can lead to problematic engine starting and incorrect operation of the machine in idle mode.

The thermocouple is a thermistor, providing information about the state of the antifreeze. When the element is strongly heated, its resistance sharply decreases, and when cooled, on the contrary, the resistance value will increase. The sensor is located next to the cylinder block near the thermostat. The impulse from the controller is transmitted to the car’s on-board computer and the radiator cooling fan.

Possible reasons for a non-functioning coolant temperature sensor:

• contact break inside;
• violation of tightness;
• breakage of supply electrical wires. They can be caught by a cable coming from the gas pedal at a very close distance.

As a result, the ECU assumes a decrease in temperature and gives an indication to pump in additional air. And after a while the driver will receive a message about antifreeze overheating. A faulty sensor in hot weather, giving false information to the unit, can cause a decrease in engine performance or its complete stop.

Mass air flow temperature sensor (MAF).

Another important monitoring device is the engine mass air flow sensor. It is installed directly in the fuel system of the power plant, namely in the incoming fuel line.

Most car owners consider this sensor to be the most important because it is responsible for proper fuel injection. If this element begins to act up, then the light on the dashboard starts to light up.

The main signs by which a sensor is judged to be faulty:

• reduction in engine power level;
• drop in speed when driving;
• fuel consumption increases;
• malfunctions in the power plant.

You can determine whether the device is operating correctly in the following ways:

• disconnecting the device from the system;
• during external examination;
• using a multimeter.

Often, the presence of contamination inside the device is a direct sign of a malfunction. As a rule, the problem occurs when the car owner forgets to change the air filter on time. Oil leaks also significantly reduce the life of the controller.

Then it is necessary to dismantle the sensor itself. It's easy to replace the sensor. Simply unplug the connector.

Although the sensor cannot be repaired, some drivers manage to clean it. To do this, you will need a soft brush, a Phillips screwdriver and carburetor cleaner.

DNTV

It was securely hidden behind the front bumper of the car, so much so that not every experienced driver is able to immediately detect it. It has the same functions as DTOZH and measures the air temperature “outside” the car.

Self-testing of the air temperature sensor

You can check the readings of the device with a multimeter. We take measurements step by step until the situation becomes clearer.

1. We check the connection of the sensor to the computer. If necessary, clean the contacts.
2. Check resistance changes when temperature parameters fluctuate. In ohmmeter mode, measure readings at different temperatures. Indications may be different, but proportionality must remain unchanged. To do this, you need to divide each resistance value by the corresponding temperature value. And each time you should get the same number.
3. Interim check. Turn on the ignition and check for an error. If it’s not there, you can finish the job there. Otherwise, let's move on.
4. Checking for broken wires. On the disconnected harness, we check the ground with an ohmmeter: contact 2 of the sensor socket with pin 30 of the ECU connector. We identify and eliminate (if any) breaks in these pins and the junction of the threads.
5. Correct connection. Completely disconnect the sensor and unit from the wiring assembly. When measuring the contacts with a multimeter, try to identify incorrect placement of the pin holes in the device connector.
6. Testing the strength of the connection to the on-board network. Turn the ignition key, measure the voltage at output 2. The value should be close to 12V. Then test other connections for current in the circuit. If you find a break, fix it.
7. Test of the sensor itself. Disconnect it from the connector and use a multimeter to check for the presence of current at the outputs. If the device shows infinitely large values, it means that you have discovered a break in the sensor and it needs to be replaced.
8. Detection of block failures. You need to close outputs 1 and 2 and turn the ignition key. Remove the error. The occurrence of an error means there is a problem with the computer or unit. The appearance of P0071 means a breakdown of the DTVV.

The DTVV installation site is accessible to moisture, which causes corrosive changes in wires and contacts. Also, dirt easily penetrates here. All this can cause incorrect operation or loss of sensitivity. Sometimes it is enough to clean the dirt and grime on the wires and restore the connection of broken sections.

To summarize the above, I would like to note a couple of important points:

Due to various electrical circuit problems, the car's ECU produces different errors. By their name it is easy to determine the nature of the breakdown. You can test the device for serviceability using an oscilloscope. Measurements are carried out when the engine gradually warms up. The graph should contain smooth lines, without sharp transitions. The device is very sensitive. The slightest contamination affects its operation

Proper operation and frequent cleaning of carbon deposits will avoid troubles. It doesn’t matter why the device became unusable, the main thing is to notice the changes in a timely manner and eliminate the problems that have arisen.

Malfunction of the intake air temperature sensor (IAT)

The design of the car includes an electrical engine control system, all elements of which affect the operating processes of the engine and the entire vehicle. A breakdown of the intake air temperature sensor (IAT), which is a fundamental part of the system, can seriously affect the functioning of the entire engine.