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.

[Hide]

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.

Signs of sensor failure

Regarding the mass flow sensor, we note that in order to identify incorrect operation or breakdown, the owner should familiarize himself with the main signs of failure.

These include the following points:

• reduction in the level of power produced by the motor;
• deterioration of the vehicle's dynamic capabilities;
• When the engine is warm, it becomes difficult to start;
• fuel consumption has increased;
• The dashboard was “illuminated” by the glowing “Check Engine” lamp.

If one of the indicated symptoms appears, the first step is to check the mass air flow sensor in the Lada Kalina car.

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.

Checking the mass air flow sensor circuit

First of all, you should check the wiring leading to the sensor. To do this, use a voltmeter to measure the voltage at the terminals of the 5-pin block, having previously disconnected it. Measurements are taken with the ignition on and the engine off. If the sensor’s power supply circuit is working properly, then the voltage between 2 and 3 sensor terminals should be at least 10 V, and between 3 and 4, 1 and 3 – 4.8–5.2 V.

If a multimeter is used as a diagnostic device, it is also necessary to measure the resistance between pin 5 and ground. The normal resistance level is 4–6 kOhm. If it is below this level, there is a short to ground. If the measurement result exceeds 100 kOhm, this indicates an open circuit or a controller malfunction.

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.

Consequences of sensor failure

When, for various reasons, the sensor fails or produces incorrect readings, the controller changes the operating algorithm. He begins to prepare the air-fuel mixture, focusing on the throttle position meter and lambda probe. Due to the lack of data previously received from the mass air flow sensor, the electronic unit “does not know” about the real amount of incoming air and cannot mix it with gasoline in optimal proportions.

By switching the controller to emergency operation mode, you can determine the main symptoms of a malfunction of the mass air flow sensor:

• on the driver’s dashboard, the control unit turns on the Check Engine light display, indicating problems in the fuel supply or ignition system;
• idle speed is unstable - it either rises to 1500 rpm, then drops to zero (the engine stalls);
• “When cold” the engine starts with great difficulty;
• incorrect preparation of the combustible mixture causes an increase in fuel consumption, regardless of driving conditions and operating mode;
• There is a decrease in the power of the power unit and frequent unreasonable jerks while driving.

Note. The inclusion of the Check Engine indicator does not provide the driver with specific information about the nature of the breakdown. The inscription calls for diagnosing engine systems using a computer connected to the service port. In this way, you can check the performance of the mass air flow sensor and other sensors in a service station.

Indirectly, a malfunction of the flow meter is indicated by the appearance of black smoke from the exhaust pipe. If the vehicle does not have an on-board computer and it is impossible to track instantaneous gasoline consumption, it is worth unscrewing 1-2 spark plugs from any cylinders and inspecting the electrodes. A layer of black soot will confirm excessive enrichment of the mixture due to emergency operation of the electronics.

Catalog numbers and cost of sensors on Lada Granta Liftback

*prices are current as of October 10, 2018.

How to choose a new MAF sensor (Kalina 8 valves)

In order to ensure maximum system performance and compatibility with the controller, before replacing an old product with a new one, you must carefully read the markings on the product body. When purchasing new products, beware of counterfeits! Some recommendations on what you should pay attention to (regarding BOSCH products): - inside the connector of the original sensor, next to the contacts, there are three metal wells that resemble the heads of small nails in appearance. These elements are used at the Bosch plant to program the sensitivity of the mass air flow sensor. On counterfeit products, such elements are absent or have a plastic structure.

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.

Checking the regulator for functionality

There are several options for checking the functionality of the sensor.

First, let's look at the simplest of them:

1. You need to disconnect the power connector from the controller.
2. Start the engine.
3. Try going for a little drive. If you notice that the engine has begun to operate more normally and the symptoms described above have disappeared, this indicates that the mass air flow sensor you removed is inoperative. Please note that when the controller is turned off, the control unit begins to operate in emergency mode, accordingly, fuel consumption can be increased (the author of the video about the demonstration of the failed regulator is the channel In Sandro's Garage).

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.

Where to buy car accessories

Spare parts and other products for the car are easily available for purchase at auto stores in your city. But there is another option that has recently received significant improvements. You no longer need to wait a long time for a parcel from China: the AliExpress online store now offers the opportunity to ship from transshipment warehouses located in various countries. For example, when ordering, you can specify the “Delivery from the Russian Federation” option.

Follow the links and choose:

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.

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.

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.

Replacing the mass air flow sensor in the Kalina model

When the owner of a Lada Kalina feels a deterioration in engine performance along with the presence of the above symptoms, or a malfunction of the mass air flow sensor is identified during a thorough diagnosis, it is not recommended to delay the procedure for replacing the component. If repairs are neglected, the problem will begin to progress, causing the LADA Kalina engine to “lose” its full functionality. The replacement process itself is very simple and does not require detailed comments. It is recommended to observe safety measures regarding preliminary de-energization of the on-board network by disconnecting the terminals from the battery.

Kalina adsorber valve

Kalina ground clearance

Kalina gas tank volume

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.

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.

View Queue

Queue

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.

DMRV itelma 1118 1130010 analog

Schematic electrical diagrams, connecting devices and pinouts of connectors

Based on the signal from the mass air flow sensor (MAF), the cyclic filling of the cylinder is calculated, which is ultimately converted into the duration of the injector opening pulse. If it does not work correctly, the car consumes more gasoline than necessary. Such a sensor is installed on the second path, immediately behind the air filter and connected to the electrical system, which is controlled by a six-pin block of wires.

There are quite a few different types of mass air flow sensors: mechanical, ultrasonic, hot-wire and some others.

In this case, we will consider the design of the HFM-5 hot-wire sensor from Bosch, which is most often installed on VAZ cars.

The sensor's sensitive element is a thin film on which several temperature sensors and a heating resistor are located.

In the middle of the film there is a heating area, the degree of heating of which is controlled using a temperature sensor.

VAZ 2110 vibration in the body when driving

On the surface of the film, on the side of the air flow and on the opposite side, two more thermal sensors are located symmetrically, which record the same temperature in the absence of air flow. In the presence of air flow, the first sensor is cooled, and the temperature of the second remains unchanged, due to the heating of the air flow in the heater zone. The differential signal of both sensors is proportional to the mass of passing air.

• 1 - dielectric diaphragm
• H - heating resistor
• SH - Temperature sensor naked. resistor
• SL - Air temperature sensor
• S1 and S2 - temp sensors before and after the heater.
• QLM - air flow mass
• t—temperature

The sensor's electronic circuit converts this signal into a constant voltage proportional to the air mass. This design is called Hot Film (HFM), its advantages include high measurement accuracy and the ability to record reverse air flow, but its disadvantages include low reliability in conditions of contamination and moisture.

To measure the amount of air that enters the engine means to determine the engine load. When the driver presses the gas pedal, the throttle valve opens and the amount of intake air increases. At the same time, we say that the load has increased.

When you release the pedal, the load drops. It's quite simple. However, this is only at first glance.

If we take into account the fact that in real driving conditions the engine often changes operating modes and the incoming air in the intake system participates in several gas-dynamic processes, then the problem of measuring the air in the system is not so simple.

In older systems (ECU January-4 and GM-ISFI-2S), other hot-wire mass flow sensors were used, the sensitive elements of which were made in the form of threads. Such sensors are called Hot Wire MAF Sensor.

The output signal of these sensors was frequency, that is, depending on the air flow, it was not the voltage that changed, but the frequency of the output pulses.

The sensors were less accurate and did not allow registering reverse flow, but these shortcomings were offset by very high reliability.

Several types of mass air flow sensors were installed on VAZ cars: GM, BOSCH, SIEMENS and Russian-made. In 1999-2004 Two types of sensors were installed on VAZ cars: 0 280 218-037 and 0 280 218-004.

These sensors produce different output voltage (calibration) parameters at the same air flow rate and interchangeability (or rather, replacing 004 with 037) is only possible with the replacement of calibration tables in the firmware.

The same applies to the new sensor 116, which has been installed as standard since the beginning of 2005.

The sensor is supplied only assembled, with a code and marked with a green circle.

On some classic cars, together with the January 7.2 ECU, Siemens-VDO sensors (5WK97014. AVTEL) were used:

They differ in calibration (from zero volts) and connection diagram.

Lada Granta 2012, 98 l. With. — electronics

Cars for sale

Lada Granta, 2019

Lada Granta, 2013

Lada Granta, 2016

Lada Granta, 2019

How to check the mass air flow sensor with a multimeter or while driving: symptoms of a malfunction

The mass air flow sensor (MAF or flow meter) is an important part of the car, the proper operation of which determines the engine power and its fuel consumption. You can find it under the hood of the car, where it is located between the air filter and the air pipe directed to the throttle valve.

The task of the mass air flow sensor is to measure the amount of air passing into the cylinders and transmit this information to the electronic control unit, that is, the “brains” of the machine. Based on the data from the mass air flow sensor, the control unit decides whether to increase or decrease the air supply to the combustible mixture.

If a mass air flow sensor fails, it is almost never repaired, but simply replaced with a new one.

Its design is quite simple, and it consists of a housing in which a device for measuring air flow is placed - a hot-wire anemometer.

It is enough to damage the diagnostic device during the process of dismantling the mass air flow sensor or cleaning it, and the entire sensor will need to be replaced. It can also fail after a long service life, but you can verify its malfunction only after checking.

Engine mounts signs of malfunction

see also