We learn how to repair and properly maintain the mass air flow sensor on Kalina and Grant

Author: Ivan Baranov

Almost all modern cars today use an injection power system, which has replaced the once popular carburetor. One of the conditions for the normal operation of this system is the use of a mass air flow sensor, which is responsible for the dosage of air flow when creating a combustible mixture. You can learn more about what the Kalina mass air flow sensor is and how to check it correctly from this material.

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Where is the DMRV located?

The sensor is located between the air filter and the air supply hose (pictured No. 13).

Catalog numbers of mass air flow sensor on LADA cars:

• Lada Priora, Kalina and Niva 4x4 – 21083-1130010-20.
• Lada Granta and Kalina 2 – 11180-1130010-00.
• Lada Vesta, Largus and XRAY - no mass air flow sensor. Modern VAZ engines (21127, 21129, 21179) and Renault engines (K7M and K4M) do not have a mass air flow sensor; instead, an absolute pressure sensor (APS) and an air temperature sensor (ATS) are installed.

Checking the mass air flow sensor with a multimeter

1. Check the voltage on the mass air flow sensor block:

1. Set the multimeter to voltmeter mode.
2. Remove the connector with the wires from the mass air flow sensor (snap off the lock).
3. Turn on the ignition.
4. We connect the negative probe of the device to the engine ground, and the other to terminal No. 2 of the block (there is a number on the block).
5. We measure the voltage at terminal No. 4 of the block.

The voltage at pin No. 2 should be at least 12 V , and at pin No. 4 about 5 V. If the device readings are different, it means the battery is discharged, the power circuit or the computer is faulty.

2. We check the Bosch mass air flow sensor on Lada Priora and Kalina 1 (with article numbers: 0 280 218 004, 0 280 218 037, 0 280 218 116):

1. Set the multimeter to voltmeter mode. (measurement limit 2 V).
2. Turn on the ignition.
3. We connect the “negative” probe of the device to terminal No. 3 , and the other to terminal No. 1 .

Compare the device readings with the table:

Checking the mass air flow sensor is also shown in the video:

Another way to check the mass air flow sensor is to replace it with a known good one.

Have you encountered a malfunction of the mass air flow sensor? If the mass air flow sensor turns out to be in good condition, and there are problems with the engine, read “Why the engine shakes, jerks, or pulls poorly” and “Why the speed fluctuates.”

The Lada Granta Liftback model is equipped with a number of digital and mechanical sensors for transmitting data to the electronic engine control unit (ECU).

During engine operation, information is summarized at the digital level, the ECU “makes” a decision on each indicator, adjusting the system for maximum performance.

The total number of sensors is over ten. They are installed around the entire perimeter of the car. The lion's share falls on the engine compartment, the front part of the car's interior.

If you have experience, the car owner can replace most scanners himself. Contacting service is necessary in the event of a critical breakdown.

Flowmeter design

Knowing the design of the air sensor, you will quickly understand the principle of its operation and understand why a faulty meter cannot be repaired, but only replaced. The device is not difficult to find - it is built into the air duct connecting the filter - air flow purifier with the throttle valve block. The exact location depends on the make and model of the car.

The majority of vehicles in use are equipped with hot-wire or film meters. The difference is in the design of the sensing element; the operating principle remains unchanged. An anemometer flow meter is a housing in which 2 platinum threads are placed - a measuring and a reference. How does the mass air flow sensor function in a car:

1. The controller supplies power to both threads. As they heat up, they change resistance equally.
2. When the engine is running, the first thread is washed by air passing through the throttle and cooled. The stronger the air flow, the more intense the cooling.
3. The electronic unit records the difference in resistance between the measuring and reference threads. Having made the calculation, the ECU determines the mass of passing air and directs the corresponding amount of fuel to the injectors.

Reference. In modern cars with turbocharged engines, mass flow sensors are replaced by absolute pressure meters (MAP) - more reliable devices with a long service life. Manufacturers began to equip new naturally aspirated engines with similar products.

The film measuring device operates on the same principle, only instead of threads, platinum-coated ceramic elements are used. That is why it is quite possible to check the mass air flow sensor, but not to repair it. A burnt thread or damaged coating cannot be replaced, only the entire product.

What is each Lada Granta Liftback sensor responsible for?

Coolant temperature sensor (DTOZH)

Used to monitor the temperature of the liquid (antifreeze) in the cooling system of the power unit. Based on the data received from the scanner, the ECU increases (lowers) the crankshaft rotation speed in order to maintain the optimal degree.

The qualitative and quantitative composition of the fuel mixture depends on the correctness of the DTOZ readings. DTOZH has a long service life and fails extremely rarely, only in the event of mechanical damage from the outside.

The standard installation location is the thermostat cover.

Knock sensor (DS)

The DD is installed to record high-frequency vibrations inside the cylinder and engine block. The cause of detonation is poor quality fuel and incomplete combustion in the chamber.

In order to set the maximum ignition timing, the DD scans the sequence (moment) of ignition of the combustible mixture. In the Lada Grant, the DD liftback is installed between the second and third cylinders.

Cannot be repaired or prevented.

Crankshaft position sensor (CPS)

The ECU calculates the number of pulses to control the fuel injectors and ignition coil.

If there is a malfunction or unstable operation, the power unit will not start. Standard installation location: surface of the oil pump cover.

Camshaft position sensor (DF phase sensor)

The DF is installed to transmit a signal to the ECU about the position of the cylinder at the top (bottom) dead center. This allows you to quickly respond and correct the enrichment (leanness) of the fuel mixture.

If the DF is faulty, the ECU automatically goes into emergency mode, which negatively affects engine performance. There are difficulties with starting, detonation at idle, a drop in acceleration dynamics, and increased fuel consumption.

The DF cannot be repaired, only replaced with a new one.

DBP and DTV

The absolute pressure sensor and temperature sensor Grant Liftback are installed in one housing - a block. The standard location is the reverse line of the modular inlet.

DBP and DTV are not subject to partial repair and prevention; only replacement with a new one is possible.

Oxygen sensor (OS). Lambda probe

The scanner evaluates the amount of unburned fuel and the concentration of exhaust gases. The data is transmitted in the form of a signal from the ECU, where the percentage ratio of fuel and oxygen is adjusted.

Dislocation: the outer surface of the Lada Granta Liftback catalyst, which is installed on the rear side of the engine, in its lower part.

Mass air flow sensor (MAF)

The importance of the functioning of this meter is underestimated by many, but in vain.

Correct and accurate calculation of the supplied amount of oxygen will ensure maximum performance of the power unit.

The air flow sensor cannot be repaired, only replaced with a new one.

Speed ​​sensor Lada Granta Liftback (DS)

Its main purpose in the Lada Granta Liftback is to measure speed online and transmit data to the dashboard.

Incorrect operation or failure makes it difficult to determine the speed at which the driver is moving at a particular moment in time. This is unsafe, since failure to comply with the speed limit increases the emergency situation on the road.

The standard location of the Lada Granta Liftback speed sensor is: the upper contour of the crankcase, above the drive housing on the right side. Despite the fact that the design of the scanner is quite simple, it cannot be repaired.

Oil pressure sensor (OPS)

The DDM is located on the rear side of the cylinder head, near the timing belt.

The purpose of the meter is to monitor the level of engine oil in the cylinders and crankcase of the power unit. And also, timely notification of the ECU about a low (critical) indicator. In turn, the ECU informs the driver through an indication on the dashboard.

A malfunction of the DDM leads to catastrophic consequences, including a major overhaul of the engine. Due to the lack of indication on the dashboard, the driver is not able to quickly respond to possible breakdowns.

Valve length adjustment sensor in the intake system (VNDK)

Automatic adjustment of valve length on the intake stroke will allow you to achieve maximum engine power. Malfunction or unstable operation of the DNDC leads to a decrease in power, increased fuel consumption, and detonation during idling.

Diagnostics in garage conditions

The above symptoms also appear during other failures, for example, failure of the oxygen sensor or throttle position. In all such cases, the electronic unit operates in the same way - it goes into emergency mode for preparing the air-gasoline mixture. Hence similar consequences.

To test the mass air flow sensor without instruments, follow these simple steps:

1. Open the hood and disconnect the connector from the mass air flow sensor.
2. Start the engine and monitor idle speed. The controller must raise the crankshaft speed to 1500 rpm and hold it stably. If the idle speed continues to float, the flow meter is most likely working.
3. Make a test drive over a short distance, observing the behavior of the car. If the engine starts to work even worse, then the problem lies elsewhere.

This technique does not allow one to accurately determine the “culprit” of problems, especially when there are several of them. For example, at the same time the lambda probe failed. It is necessary to carry out more accurate diagnostics - check the mass air flow sensor with a multimeter according to the following instructions:

1. Switch the multimeter to voltage measurement mode. Open the hood and find the sensor connection block.
2. Connect the red wire from the device to the input signal contact (usually colored yellow). Connect the second clamp with black insulation to the green conductor.
3. Turn on the ignition and record the voltmeter readings.

Readings of 1.04–1.05 volts indicate that the platinum elements of the sensor are quite worn out, and you should prepare to replace the mass air flow sensor. A value of 1.06 V or more indicates that the air flow meter has died. You need to purchase a new meter and install it on the air duct instead of the old one.

If, as a result of the diagnosis, you received average readings, it would not hurt to clean the sensor. Do not try to get inside the mass air flow sensor with various brushes - for this purpose there is a special liquid on sale that washes away dirt from the air mesh and measuring elements.

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Catalog numbers and cost of sensors on Lada Granta Liftback

*prices are current as of October 10, 2018.

Recommendations for selecting sensors

In order not to delay the repair time due to the purchase of low-quality spare parts, service station technicians recommend purchasing only original parts.

When choosing a component manufacturer, always give preference to factory parts. Check the index matches carefully. An exhaustive list is provided in the operating instructions.

Buy analogues less often, even if they are more expensive than the “originals”. Do not use the services of dubious suppliers who sell spare parts at unusually low prices.

If you do not have personal experience in servicing a technical device, install the components at a service center, where they provide a quality guarantee for the work performed.

Reviews

Conclusion Despite the negative reviews about the digital sensors on the Lada Granta Liftback, their manufacturing quality is decent. Subject to systematic technical inspection and careful handling of the machine, the service life exceeds the warranty period.

Premature wear of digital equipment can be caused by a short circuit in the circuit, damage to the cable insulation layer and other factors. However, this does not indicate defectiveness and poor manufacturing quality of the scanners.

The injection engine control system uses data from many sensors to form the optimal composition of the fuel mixture. One of them is the mass air flow sensor (MAF LADA Granta). Like any car part, the sensor can fail and cause errors in the operation of the injection system. Therefore, the mass air flow sensor must be changed immediately when signs of malfunction appear.

Design and principle of operation of the LADA Granta mass air flow sensor

The purpose of the mass air flow sensor is to control the amount of air flowing from the air filter into the engine. The LADA Granta mass air flow sensor is installed on the pipe between the throttle valve and the filter and measures the flow speed in a simple and original way: by monitoring the cooling of the electrical conductor. The mass air flow sensor has two platinum filaments through which current passes. The first thread is cooled by the air flow passing from the filter, the second is a control thread. By cooling the first thread, the resistance decreases in proportion to the strength of the air flow. Accordingly, the engine ECU receives information about the amount of incoming air and can ensure the optimal ratio of the components of the air-fuel mixture supplied to the combustion chambers.

Signs of malfunction of the LADA Granta mass air flow sensor

The simplest and most noticeable sign that there are problems with the mass air flow sensor is the “CHECK ENGINE” light on the panel and the corresponding error code of the on-board computer. The following signs also indicate a malfunction of the mass air flow sensor:

• unstable, high or low idle speed;
• increased gasoline consumption;
• weakened engine dynamics and power;
• problems with starting the engine, especially when it is hot.

The listed signs do not necessarily indicate a breakdown of this particular part, however, if they appear, it is necessary to check the LADA Granta mass air flow sensor. If the inspection confirms a breakdown, it must be replaced.

Tip: The mass air flow sensor may not work properly if the air pipe is damaged, so before checking the sensor, you should make sure there are no cracks or breaks in the pipe.

Liqui Moly

How to clean the MAF sensor? One option is cleaning fluid from Liqui Moly. The company is known to many car enthusiasts as a manufacturer that makes only high-quality products for cars. In addition, the ratio between reliability and price is at an optimal level. As for the use of liquid for cleaning the mass air flow sensor, most vehicle owners have already become convinced of its effectiveness. This has not been proven by a single procedure. And if the sensor is in working condition, then even after cleaning it will last no less.

The liquid can be used for both diesel and gasoline engines.

Sources

• https://zapchasti34.ru/motor/priznaki-neispravnosti-dmrv-kalina.html
• https://ladaservice.info/lada-kalina/elektrooborudovanie-lada-kalina/dmrv-lada-kalina/
• https://gt-models.ru/testy/raspinovka-dmrv-kalina.html
• https://ilifia-club.ru/dvigatel/datchik-dmrv-kalina.html
• https://avtozam.com/vaz/lada-kalina/granta-dmrv/
• https://FokSevmash.ru/servis-i-uhod/neispravnosti-dmrv-kalina.html
• https://CarFranceSpb.ru/dvigateli/priznaki-neispravnosti-dmrv-kalina-8-kl.html
• https://gil-service.ru/ts/dmrv-granta.html

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How to check the MAF of the LADA “Granta”

It is possible to absolutely accurately assess the performance of the mass air flow sensor only if you have special expensive equipment (motor tester). However, there are three simple and reliable methods: visual inspection, disconnecting the sensor and checking with a multimeter. A visual inspection of the mass air flow sensor allows you to “by eye” assess the serviceability of the part. To inspect the sensor, you need to loosen the air pipe clamp and remove the latter. The inner surface of the corrugation and the mass air flow sensor must be clean, without signs of oil deposits. You should also make sure that the corrugation is not damaged and does not “suck” air past the air filter and sensor. The next stage of inspection is removing and checking the sensor itself. To do this, you need to unscrew the two mounting bolts and remove the sensor from the filter housing along with the sealing ring. The inlet grid of the mass flow sensor must be free of dust or oil. If the mesh is dirty, you can try simply cleaning it without changing the sensor. When visually inspecting the mass air flow sensor, you should pay attention to the condition of the sealing ring. Often the sensor does not work due to air leaks through a damaged or worn rubber seal ring.

Disabling the mass air flow sensor is the fastest and easiest way to check its performance. It is necessary to remove the connector from the sensor and start the Granta engine and make a test drive. The engine controller will automatically go into emergency mode and the proportions of the fuel mixture will depend only on the position of the throttle valve. If a test drive shows that acceleration dynamics improve with the mass air flow sensor turned off, it is necessary to replace the sensor with a new one.

Checking the mass air flow sensor using a multimeter is only relevant for some Bosch sensors. It is necessary to measure the voltage at the sensor with the engine not running (between the yellow and green wires). If the voltage is within 1.01-1.02 volts, the sensor is working. voltage above 1.05 volts indicates a failure of the mass air flow sensor.

Troubleshooting methods

There are several options for troubleshooting the device:

1. Replacing the sensor. The surest way to ensure normal system operation is to install a known working controller.
2. Check the connection of the regulator, as well as the functionality of the electrical circuit. It is very rare, but it happens that the regulator refuses to work normally due to oxidation of the contacts on the connector. In this case, you can try to disconnect the sensor and clean the contacts with an iron brush.
3. Rinse the device. This option for restoring performance is considered one of the most popular among our compatriots today. Cleaning usually takes a little time, but you have every chance of restoring the functionality of the regulator. Our resource has already written about flushing the device; detailed step-by-step instructions are presented in this article.

How to change the air flow sensor of a LADA “Granta”

The mass air flow sensor cannot be repaired and if it malfunctions, it must be replaced with a new one. Replacing the MAF sensor of the LADA “Granta” is performed as follows:

• Unscrew the clamp with a screwdriver;

• disconnect the connector from the mass air flow sensor;

• Using a 10mm wrench, unscrew the two MAF mounting bolts;

• pull out the sensor with the seal from the air filter housing;

• install a new sensor with an o-ring;
• screw in and tighten the sensor mounting bolts;
• connect the connector.

The MAF sensor has been replaced; all that remains is to check its operation by performing a test start of the engine and a drive.

Causes of problems

The air flow meter becomes unusable for the following reasons:

• a lot of dust and dirt gets on the measuring elements, because the car owner rarely changes the air filter;
• on heavily worn engines, gasoline and oil vapors penetrate into the mass air flow sensor through the crankcase ventilation pipe;
• a hole in the corrugated air duct from where dust is sucked in;
• accidental damage due to unqualified repairs;
• break in the wires connecting the sensor connector to the controller.

In addition to the above reasons, natural wear and tear of the device also occurs. The service life of a new mass air flow sensor is 50–250 thousand km, depending on the make and origin of the car.