How to find out the engine temperature of a Lada Granta 2012

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.

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

Here is an example of firmware for the Grants Norma panel. Initially, the panel is sewn with firmware 090

We take out the panel, remove the back cover, and connect the programmer to a special connector on the panel board.

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

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

In preparing this article, information was used from

Source

How to check

After removing the sensor, it should be visually inspected for damage or corrosion. The easiest way to check the DTOZH is to replace it with a known good one.

• multimeter (in voltmeter mode, ohmmeter with a measurement limit from 100 Ohm to 10 kOhm);
• thermometer (with a measurement limit of at least 100 o C);
• heat-resistant container with a volume of 0.5 l.

The procedure for checking the power supply circuit of the DTOZH:

1. Switch the multimeter to voltmeter mode;
2. Remove the block with wires from the sensor and turn on the ignition;
3. Connect the negative probe of the multimeter to the engine ground, and the other to terminal No. 1 of the block;
4. The voltage at the output must be at least 12 V.

If there is no voltage or they are less than 12 V, it means that the battery is discharged, the power circuit or the computer is faulty.

Procedure for checking DTOZH:

1. Switch the multimeter to ohmmeter mode;
2. Prepare a container with hot water (about 100 o C);
3. Connect the multimeter probes to the sensor terminals and lower its working part into water;
4. We measure the resistance of the DTOZH as the water cools.

Old dashboard

On vehicle models before 2014, it will not be possible to view the temperature on the dashboard in any case. And, if you pay attention only to the overheating light, then when it lights up, it may be too late to save the engine.

In this case, installing a special engine temperature indicator will help. However, you first need to understand what the on-board computer values ​​on the panel mean in order to understand the problem.

On-board computer values ​​on the panel

The manufacturer says that you can drive with an engine that is not warmed up. Although this is fraught with major overhauls not only for the engine, but also for the automatic transmission. If you warm up the engine, then in hot regions you may not understand when the engine warms up to 80 degrees, and the temperature jumps above the set point. And when the engine starts to boil, it will be too late to wave your hands.

So how do you know that the heating levels in the engine have reached their climax? In this case, experienced mechanics suggest installing a special engine temperature indicator.

Installing a separate engine temperature indicator

A similar engine temperature indicator is installed in any free hole in the car interior. The installation procedure itself does not take much time.

Attention! First you need to turn off all power in the car. It is best to remove the terminals from the battery.

Now you can begin the procedure:

Now you can turn on the power to the car using the battery and start the car. The engine temperature indicator should turn on and indicate a combination of numbers indicating degrees Celsius.

View the temperature using a smartphone or tablet

On modern Lada Granta or Kalina, you can view the temperature using a smartphone or tablet. Only to perform this procedure, the car owner will need to buy a special cable.

This cable works via Bluetooth. You will also need to download a special program to your phone with the Android operating system. Using it, it will be possible to view the engine heating degrees.

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?

How to fix the missing engine temperature indicators in Lada Granta and Kalina-2?

Not everything that our designers adopt from imported cars is useful for the consumer. So all cars used to have a dial indicator for engine temperature, but then VAZ engineers decided that the very fact of its presence meant that the cooling system was not reliable enough.

Also in this issue

Obviously stupid, and it was later corrected. On the panel displays of the latest releases, a digital indication of a previously rejected control parameter has appeared. But it is recommended to do the same on previously released machines. In the article we will find out how.

Why control the temperature

The more experienced the driver, the more the slightest deviations in the temperature of the antifreeze in the engine can tell him. No matter what trouble-free and powerful cooling system it has. And leaving the driver with only an overtemperature indicator light is not the best solution. Even the excess may be different and have a different background.

Different solutions

Technically there are no special problems. A temperature sensor is installed on the cars; it is necessary for the operation of the fuel injection system; all its readings are constantly read by the engine management system, digitized and stored in memory. All that remains is to extract them from there and display them on a convenient indicator.

Working temperature sensor / Source: Drom

If the owner is lucky, then he will already have a new type of instrument cluster on his car, in which it is enough to just change the factory firmware - and the data will appear on the place of the LCD display provided for them. You just need to study the issue or contact service station specialists.

Earlier panels cannot be easily re-skinned; the display matrix will have to be resoldered. This operation is unlikely to be justified; there is an easier way.

There is a plug on the center console of these Lada cars, by removing which you can put in its place a specially made and commercially available temperature indicator with large, contrasting, easily readable numbers.

The indicator itself will find the necessary information in the ECM memory and display it for the driver; you just need to connect it to the wiring of the on-board diagnostic connector in accordance with the attached instructions. This will not harm the connector itself in any way.

Their types and principle of operation

The operating principle of almost all outdoor air temperature sensors is the same. It is based on the effect of changing the resistance value of a semiconductor element depending on temperature. The temperature dependence of resistance for semiconductors is negative. This means that as the temperature increases, the resistance value decreases. For the VAZ sensor, the dependence table is as follows.

As can be seen from the table, the values ​​are given with an error. Such great precision is necessary to ensure high reliability of the readings. Temperature measurement belongs to the field of measuring technology, and it should not “lie”. At manufacturing plants, selective verification of devices is carried out. It is doubtful that they do this in China, but Russian sensors accurately check. They “verify”, not “check”. Verification is a term used by surveyors and the military.

Video - replacing the outside air temperature sensor on a Peugeot 307:

If the sensor on the car starts to “lie”, you can check it yourself using a thermometer, a source of warm air (fan heater) and a multimeter in resistance measurement mode.

The accuracy of measurements depends not only on the sensor itself, but also on its location and design. The less the sensor is blown by oncoming air flows, the less moisture gets on it, the more accurate its measurements will be. For these reasons, the sensors are placed in special housings. This is what the BMW sensor looks like.

It is not necessary to purchase the sensor assembly if the housing is available. You can only buy the measuring element itself.

All sensors have different temperature dependence characteristics, so theoretically it is impossible to use sensors from other car models, even within the same model range. Temperature measurements will be taken, but the accuracy of the readings cannot be guaranteed.

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Knock sensor Lada Granta

The main tasks of this element include the determination of high-frequency oscillations resulting from fuel combustion in the cylinder block.

Based on the DD signal on the Grant, the control system selects the most suitable ignition timing angle, thanks to which efficient and complete combustion of fuel is achieved in the cylinder block of the car engine. In addition, the ignition timing is also regulated, which is important when using fuel with different octane numbers. The knock sensor on the Lada Granta is located directly on the cylinder block (more precisely, between the second and third cylinders).

Operating a vehicle may lead to malfunctions, for example, the engine may lose power. This symptom indicates that there are obvious problems with the knock sensor. The presence of a malfunction is indicated by the illuminated “Check Engine” lamp, and diagnostics almost always reveal one of the following errors:

Replacement

The sensor must be replaced after draining the coolant, but some craftsmen make replacements without draining the antifreeze.

To replace you will need:

• Antifreeze for refilling 1l;
• 13mm ratchet head;
• Open-end wrench 19mm;
• Container for draining coolant;
• Phillips screwdriver;

Once everything is prepared, you can begin disassembling the car.

Work must be carried out on a cooled engine!

Replacement process

• Remove the negative terminal from the battery;

• Remove the air filter box;

• Drain the coolant by unscrewing the plug in the block;

• Remove the connector from the sensor;

• Unscrew the sensor and remove it;

• We install a new sensor and fill the coolant;

Replacement without draining coolant

To replace without draining the coolant, simply unscrew the sensor, plug the hole with your finger and quickly install a new sensor. The loss of antifreeze with this method will be no more than 0.5 liters, but will save about an hour of time.

Is it possible to become infected with coronavirus without fever?

Fever is one of the main symptoms of Covid-19 (Image: Getty Images) As coronavirus has impacted every aspect of our lives in recent months, many of us will also be looking for any signs or symptoms that may indicate a case of Covid-19.

And while they can vary greatly, the most common one is fever, which is defined as a hot sensation when touched on the chest or back.

But with coronavirus cases varying in both symptoms and severity, is it possible to catch the virus and not have a fever?

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Is it possible to get coronavirus without fever?

Fever is listed as the most common symptom of Covid-19, along with a new, persistent cough and loss of taste or smell, according to the NHS.

Absolute pressure and air temperature sensors Lada Granta

These sensors are combined into one housing and installed on the receivers of the intake module; the most modern AvtoVAZ engines are equipped with them.

DBP on Grant differs in the output signal voltage within the range of 0.15..4.6 V, this voltage depends on the pressure level inside the intake pipe. The information it sends helps the ECU calculate the amount of air received by the intake pipe during one cycle.

A breakdown of the device circuit leads to an error code being entered into the system memory, and then the alarm turns on. After this, the control system calculates the air received based on the crankshaft speed, as well as based on the throttle valve opening angle.

The sensitive component of the DTV is the inlet pipe thermistor. The output signal voltage of the device connected to the computer will be approximately 0.3..4.9 V, it depends on the temperature of the air passing through the specified element. When a DTV failure is detected, the control system performs actions similar to its actions in the event of a DBP failure on a Lada Granta, replacing the readings of the described device with fixed temperature values.

Operating principle of DDM

The operating system is simple - under oil pressure, the measuring membrane changes position and, as a result, the contacts open or close. When the liquid level drops, the membrane falls, thereby disconnecting the contacts. After which a signal is triggered and displayed on the dashboard. If the oil pressure sensor on a Lada Granta fails, but the oil level is normal and the entire system, after testing, turns out to be operational, then it is recommended to check the meter itself.

Advice! If you haven’t looked under the hood of your car before and haven’t done at least a little repair and technical work, then you shouldn’t move on to the next stage. Despite the fact that the replacement process is very simple, you can damage the car due to lack of experience.

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

Now let's see what devices are installed on Russian cars and where they can be found.

Prices are for used and new devices. You need to find out more about the cost in special auto stores.

Attention! Experienced mechanics do not recommend buying equipment on open markets. It is best to make purchases in specialized stores or service centers.

Catalog items

The serial number for the engine temperature gauge of a vehicle from a domestic manufacturer is 2190-94. It is not being repaired. Experienced mechanics advise checking this device before replacing it. At the service center, the procedure is carried out at special stands. But you can check it at home.

Self-replacement of the temperature sensor

The check is done as follows:

If it does not reach the specified values, then the sensor needs to be replaced.

The replacement procedure is carried out as follows:

At this point, the process of changing the thermostat is considered complete. Now all that remains is to observe the engine temperature through the instrument panel. At any slightest hesitation, you must contact the service center. Since it is possible that a faulty thermostat could play a cruel joke on you and display the temperature incorrectly. And at this time the engine overheated enormously.

Purpose

The process of ignition of the fuel mixture in the cylinders of the internal combustion engine is accompanied by an increase in temperature to 20000C. If you do not maintain operating temperature conditions, the cylinder block with all its parts will simply collapse. The purpose of the engine cooling system is precisely to maintain the thermal operating conditions of the engine at a safe level.

The Grant engine temperature sensor is a meter that tells the ECU about the degree of heating of the antifreeze. The electronic unit, in turn, analyzing data from all sensors, including DTOZH, brings all internal combustion engine systems to a balanced optimal operating mode.

DTOZH:

Temperature sensor T811 | Server room environment monitoring

Temperature sensors A (T811) are designed to measure indoor air temperature without the possibility of water entering the sensor housing. The sensors are made in the form of a board mounted on a plastic case with slots.

Thermal sensors (T811) are connected to NetPing 2 / PWR-220 v4 / SMS, NetPing 2 / PWR-220 v3 / ETH IP power distribution units (IP PDUs). Information on connecting temperature sensors (T811) is given in the “User Manual” documents of the corresponding NetPing IP PDUs to which they are connected. Information on setting up temperature sensors (T811) is given in the “Firmware Description” documents of the corresponding NetPing IP PDUs to which they are connected.

All server room temperature sensors are connected in parallel to each other to the same contacts. The sensor model is indicated on the body of each digital temperature sensor. Before using the air temperature sensor, you must set the temperature sensor address yourself. The temperature sensor address is set by removing the temperature sensor board from the case and installing mechanical switches (jumpers) in a certain place using a screwdriver included with the NetPing power distribution units, or manually:

Checking the DTOZH

The sensor is checked using a multimeter and a glass of boiled water with a thermometer.

To do this, set the switch on the multimeter to the resistance measurement parameter.

The probes of the multimeter are connected to the sensor, and the sensor itself is placed in a glass of boiling water.

Next, a thermometer is dipped into the glass to measure the water temperature.

The water temperature reading should be compared with the resistance reading of the multimeter and compared to the original table.

If the readings agree, then the sensor is working.

Speed ​​sensor

The DS is intended to measure the speed of a vehicle, with subsequent transmission of the received data to the ECU. The speed sensor is a small part; it is located in the upper part of the clutch housing, near the front wheel on the right. Its malfunction is usually directly related to a breakdown of the speedometer. However, the sensors installed on Grants are distinguished by fairly high quality and durability.

By the way, initially three types of speed sensors were installed on Grants: VAZ-2170 PEGAS, 2190 AVAR Russia and 21700-3843010-02.

More details about the speed sensor on Grants.

If the DS malfunctions, the electric power steering most often stops functioning, and at the same time the instrument panel begins to display error P-0501. As a rule, the steering wheel fails precisely because the car detects a breakdown of the speed sensor; the DS itself may show zero speed.

If the sensor fails, the following symptoms of failure are noted:

These parts have their own markings, their price ranges from 300 to 600 rubles.

Causes of malfunction

Arrow stuck on dashboard

It’s probably no secret to anyone that the arrows hanging on the dashboard are inextricably linked with the electrical circuits in the car. To troubleshoot the problem, the car enthusiast will need some knowledge of auto electrics, as well as design knowledge of the VAZ-2114.

As practice shows, most motorists, when such a breakdown occurs, turn to a car service center, but this problem can be eliminated on their own. But, first of all, it is necessary to find the immediate cause of the effect.

What are the options?

So, let's look at the possible options for the engine temperature indicator arrow to hang on the dashboard:

• The magnetic motor of the pointer drive is broken.
• Breaks and disturbances in the operation of the electrical circuits of the dashboard.
• Short circuit in the circuit board of the device itself.
• Freeze related to temperature sensor.
• Problems with the ECU.

Elimination methods

Once the root causes have been identified, you can move directly to methods to resolve the problem.

To carry out repair and diagnostic operations, you will need some tools, namely: a multimeter, an OBD II cable, a tablet or laptop, as well as a set of keys and screwdrivers for dismantling the main and auxiliary components.

So, now that the motorist is fully armed, you can proceed directly to the diagnostic and repair process.

The magnetic motor of the arrow drive is broken

The process of repairing and disassembling the dashboard

The most common problem with the arrow hanging or not responding on the instrument panel is a breakdown of the drive motor . To diagnose this device, you need to use a multimeter to close the winding contacts to an electrical circuit or resistance.

If the tester does not show anything, then most likely the winding is burned out or there is a break in contact with the board.

To troubleshoot the problem, of course, it is recommended to contact an auto electrician, who will do everything quickly and efficiently, but if the car enthusiast has the necessary skills and abilities in repairing such equipment, then he will be able to independently replace the motor and solder the necessary contacts.

Breaks and disturbances in the operation of the electrical circuits of the dashboard

Wiring related fault determination

Another common reason for a stuck sensor is a break in the electrical circuit from the coolant sensor to the dashboard . It is quite simple to identify this; you need to remove the ground wire from the sensor and connect it to any other “minus” so that the electrical circuit is closed.

If the wire is not broken, then the arrow will begin to move; if not, then according to the electrical diagram it is necessary to find the wire in which the break occurred and eliminate the fault. As practice shows, motorists do not change the wire, but simply connect and insulate the contacts at the break point.

Short circuit in the board of the device itself

Detection of short circuits on the instrument board

There have been numerous cases when a short circuit in the instrument panel board caused the needle to freeze.

But, in this case, an indirect sign is that nearby signs also fail. So, the tachometer and other indicators may not show. Here, troubleshooting is to replace the instrument panel assembly.

Freeze due to temperature sensor

Temperature sensor location

A frozen temperature arrow on the instrument panel will be associated with a faulty temperature sensor. So, its diagnosis can be carried out by analogy with a wiring break, or checked using a tester. If, as a result of diagnostic operations, it turns out that the coolant sensor is faulty, it must be replaced.

Problems with the computer

The process of identifying ECU errors and eliminating them

It is extremely rare that the needle freezes due to a malfunction in the electronic engine control unit.

In this case, using the appropriate cable, you need to connect to the “brains” of the car and see if there are any errors. If there are too many of them, then you need to reset them.

Of course, if this procedure does not help, then it is recommended to reset the software. It is recommended to trust this procedure to professionals who will not only fix the problem, but also set the motor to optimal operating mode.