The mass air flow sensor is a mass air flow sensor on the VAZ 2115. It is installed on the air filter pipe, immediately after it. The mass air flow sensor is responsible for the correct operation of the engine at idle. That is, it controls the flow of air when the mixture is burned.
If the sensor does not work correctly, the mixture in the cylinders may either be too rich, or, on the contrary, there will be air starvation. The result is either increased fuel consumption or unstable idling.
Checking the performance of the mass air flow sensor
If the speed of your car begins to “float”, one of the reasons may be the failure of the mass air flow sensor. To accurately determine its condition, it is necessary to check it. This is done as follows - you need to disconnect the plug from the sensor, thereby turning off its power and starting the engine. If the engine begins to maintain normal operating speeds, the mass air flow sensor may be faulty, but if the speeds still “float” or are higher than the norm, the reason is different.
The cost of the sensor is now about 2000 rubles , so if the speed returns to normal when it is turned off, you can try to remove it and clean it. If this does not help, a replacement must be made.
Checking the mass air flow sensor of VAZ 2113, 2114, 2115 with a multimeter
The mass air flow sensor (MAF) may fail on VAZ 2113, 2114 or 2115 cars due to destruction of the electrical circuit of the device, loosening or oxidation of contacts, internal damage, short circuit or exhaustion of the resource, and it will be useful for the owner to know how to check check its performance with a multimeter.
Few motorists know that diagnostics can be performed using a small set of tools. To carry out diagnostics, it is not necessary to spend time visiting a car service center and paying the technicians for services. The work can be done with your own hands. But, before you check the device, you need to understand its structure and circuit.
Design features, main faults and their symptoms
Often the first sign of a breakdown is the appearance of the Check Engine light. But it is also advisable to perform testing if:
- if the engine stalls at idle;
- gasoline consumption has increased;
- when changing gears the car stalls;
- acceleration dynamics dropped.
Knowledge of the design of the mass air flow sensor will allow you to more accurately determine malfunctions. This is an insufficient signal level or complete failure of the device.
Necessary equipment
To work, you will need a car multimeter. A wide variety of models are on sale, their prices vary from 350 to 15 thousand rubles. The costs are quite justified, since you can independently test the on-board electrical network as needed without a trip to the service station. For example, the cost of diagnosing a mass air flow sensor as of August 25, 2019 in car services is on average 500 rubles.
Preparatory activities
Checking the mass air flow sensor of the VAZ 2114 and other models begins with studying the pinout of the contact group.
For a typical mass air flow sensor it is as follows:
- pin No. 2 is black and pink, it transmits data to the main relay;
- green contact No. 3 – ground;
- white or gray contact No. 4 – node power supply;
- yellow contact No. 5 – ensures the passage of signals from the ECU.
To perform diagnostic measures, the mass air flow sensor does not need to be removed.
If there is oil deposits or condensation on it, the air filter on your car needs to be changed more often. There may be other types of contamination on the device - dirt and dust. In this case, you need to check the oil level in the crankcase, clean the bumper, and replace the O-ring.
Sequence of procedure
First, we prepare the measuring device; the multimeter must be switched to the mode for measuring direct electric current up to 2 Volts.
Further operations are performed in stages:
- The black end of the measuring device is connected to the third contact, the red end to the fifth. You can connect them with a pin.
- The vehicle does not start, but the ignition turns.
- Information appears on the multimeter. Its decoding is given in the table below.
on the multimeter (V)
Mass air flow sensor status
new sensor (after several weeks of operation, parameters increase)
Where is the MAF located?
The sensor is located under the hood on the air filter pipe.
Mass air flow sensor
If you think your sensor is faulty, an easy way to check is to simply unplug it. Namely:
- Open the hood and disconnect the sensor.
- We start the car.
- We look at the tachometer or on-board computer: the idle speed should be more than 1500 rpm.
- If, after removing the sensor, while driving, you feel that the car has begun to gain speed faster, then the mass air flow sensor should be replaced with a new one.
- After the sensor is turned off, the Controller begins to prepare the mixture based on the throttle position.
Useful articles:
- For a more detailed and accurate check, read the article: How to check the mass air flow sensor on a VAZ?
- Before throwing away the sensor, try cleaning it, maybe this will help you: How to clean the mass air flow sensor on a VAZ?
- To find out how to remove and replace the sensor, use the article How to replace the mass air flow sensor?
Mass air flow sensor for VAZ 2114: what is it and how to change it yourself
From this article you will learn why a mass air flow sensor is needed and how it works, how to check the mass air flow sensor for malfunctions and how to replace the unit yourself, without the need to visit a service station.
This is what the sensor looks like
PURPOSE AND PRINCIPLE OF OPERATION
The VAZ 2114 injection engine is a complex design capable of operating in different load modes. In order to ensure normal operation of the power unit and the optimal amount of gasoline consumed, the car’s electronic brains must determine as accurately as possible the ratio of gasoline and air in the supplied fuel mixture.
To determine the required ratio of the proportions of the fuel mixture, the ECU uses the indicators of various measuring instruments - the main one is the mass air flow sensor.
Let's figure out what this DMRV is and what it is eaten with.
Mass air flow sensor (also known as a flow meter) is a sensor that determines the amount of air entering the car engine. Based on the obtained air consumption indicators, the ECU determines how much gasoline needs to be supplied to the combustion chambers.
The sensitive element of the sensor is represented by a thin platinum thread. During operation of the device, this thread heats up to a temperature of 1000 degrees and is cooled by the flow of passing air. The amount of air passed through is determined based on the temperature to which the sensitive element has cooled. The lower the temperature, the higher the conductivity of the platinum, and the greater the amount of current transmitted to the thread it conducts.
The cost of the sensor is about 2-3 thousand rubles. The products of the German company Bosch have proven themselves well, while the owners of the fourteenth, on the contrary, do not respond entirely positively to the domestically produced mass air flow sensor.
Mass air flow sensor device
CHARACTERISTIC SIGNS OF MALFUNCTION
As already mentioned, a working mass air flow sensor on a VAZ 2114 is a necessary condition for the normal operation of the engine of the fourteenth, and if any problems arise with the device, they will certainly affect the functioning of the engine, which you will immediately feel.
The air consumption at idle speed of the VAZ 2114 varies between 8-10 kg/hour; when the engine operates at 3000 rpm, it increases to 29-31 kg/hour. In this case, the optimal ratio of gasoline and air in the fuel mixture is 1 to 15.
If the MAF readings differ from the actual consumption, the amount of gasoline is calculated incorrectly, which contributes to either excessive fuel consumption or problems with the engine.
Signs of a malfunctioning mass air flow sensor:
- First of all, engine malfunctions will begin at idle speed - the speed will begin to float or increase on its own;
- Then the dynamics of acceleration will worsen - the car will stall even when accelerating from a hill;
- Due to the incorrect ratio of gasoline and air, fuel consumption will increase significantly (up to a twofold increase);
- Also, the fourteenth may stall when trying to change gears.
Don’t be fooled by the absence of a lit “Check Engine” indicator on the dashboard, because if the mass air flow sensor does not show any signs of life at all, the light may not light up.
If your fourteenth is equipped with an on-board computer, it will display the error “Insufficient air flow sensor signal level”
It can be caused by various factors:
- weak fixation of the contact block;
- oxidation of the contacts themselves or broken wiring;
- damage to the sensitive element;
- broken internal wires.
No matter what signs of a malfunction of the mass air flow sensor appear, to make a final conclusion about the operability of the device, it is necessary to check it.
OPERATIONAL CHECK
Checking the mass air flow sensor does not require a trip to a service station; if you have a multimeter and an hour of free time, you can do it yourself.
FEATURES OF CHECKING THE MAF WITH A MULTIMETER
Checking the VAZ 2114 mass air flow sensor with a multimeter requires knowledge of the pinout of its contacts, which you can see in the image below.
Figure 1.1: MAF pinout
- Contact No. 5 (in Bosch sensors, as a rule, yellow wires come from it) – is responsible for supplying an incoming signal from the ECU;
- Contact No. 4 (gray or white) – is responsible for powering the device;
- Contact No. 3 (green wire) – is responsible for grounding;
- Contact No. 2 (pink-black) is the wire through which information from the sensor is transmitted to the main relay of the fourteenth.
Next, take the multimeter and switch it to DC measurement mode. It is necessary to set the maximum measurement limit to 2 Volts. The check is performed using the following algorithm:
- We connect the red electrode (-) of the multimeter to contact No. 5, the black electrode (+) to contact No. 3. Thin electrodes of the tester must be inserted under the rubber contact seals so that they do not damage the protective coating;
- Turn on the car ignition (do not start the engine);
- We look at the multimeter readings.
Rice. 1.2: Correct connection of multimeter probes
| Tester readings (voltage, V) | Air flow sensor condition |
| 0.006 – 1.01 | Only new sensors produce this voltage; after several weeks of operation it increases by several hundredths; |
| 1.01 – 1.02 | Normal operating voltage of a device in constant operation; |
| 1.03 – 1.04 | The device has used up approximately half of its working resource; |
| 1.04 – 1.05 | The MAF voltage is in an extremely worn condition, replacement is recommended; |
| Above 1.05 | Such a sensor does not work, or it works but sends distorted signals to the ECU. |
HOW TO CHECK THE OPERATION OF THE MAF WITHOUT A MULTIMETER
If, due to the lack of a tester, you cannot check the device using the method described above, there is only one test option left - remove the air flow sensor and see how the car behaves without it.
Dismantle the device or simply turn off the power going to it, start the engine and crank it at 1500 rpm. Start moving. In this case, the ECU puts the fourteenth into emergency mode, in which the fuel mixture is supplied based on the current throttle opening angle.
If, when driving without a mass air flow sensor, you felt that the car literally came to life - it began to pick up speed better when accelerating, problems at idle disappeared, most likely the air flow sensor on the VAZ 2114 is faulty and needs to be changed.
However, a situation is possible in which the cause of the problem is not a failed mass air flow sensor, but incorrect firmware of the ECU itself.
The likelihood of this increases if you took the fourteenth from your hands, since previous owners often do not bother to mention their experiments with the electronic controller.
To check the accuracy of the IAC (idle air regulator) and mass flow sensor control algorithm specified in the ECU firmware, it is necessary to install a spacer in the throttle valve, this is necessary to increase engine speed. A thin metal plate no more than 2 mm thick can be used as a spacer.
Sensor malfunctions
In this subgroup we will look at the main symptoms of a malfunction of the mass air flow sensor. Symptoms of a non-functioning mass air flow sensor can be completely different:
- failures in engine operation under load;
- the engine stalls when changing gears;
- failures in engine idle speed;
- low car dynamics.
The check engine light does not light up as a result of the death of the sensor, and the breakdown can be determined using diagnostics or an on-board computer (OB). Even if the “CHECK” lights up and then goes out, this will not affect the diagnostic result, so that the error is stored in the trip computer.
Replacement
Replacing the sensor is quite simple; all you need is a 10 mm wrench and a Phillips screwdriver.
- Remove the connector from the sensor;
- Loosen the clamp securing the corrugation to the sensor;
- Unscrew the two bolts using a 10 mm wrench;
- Remove the sensor;
- We assemble in the reverse order;
The replacement process is complete, after this procedure your car should drive like new.
Low signal level
An error on the on-board computer or on the diagnostic card “low signal level” can appear for several of the following reasons:
- The sensor is not connected to the wiring block.
- An open circuit in the circuit to which the sensor is connected.
- The mass in the sensor circuit has broken or oxidized.
- Signal wires are broken or connected incorrectly.
- The sensor signal wires are shorted.
- The mass air flow sensor is not working properly.
- Incorrect operation of the engine control unit.
DMRV of VAZ 2115 car
VAZ 2115 cars are the last link in the Samara family and inherited the range of engines from it. Accordingly, the engine ECU controllers and the mass air flow sensors combined with them are similar. Flow meter compatibility is determined by the ECU type, and is as follows:
- ICE VAZ 2111 - Mass air flow sensor 0 280 218 004 (obsolete) or 0 280 218 037, environmental standard Euro 2;
- ICE VAZ 21114 - MAF 0 280 218 116, environmental standard Euro 2;
- ICE VAZ 211183 - Mass air flow sensor 0 280 218 116, environmental standard Euro 3.
Actually, ecology is not related to the type of flow meter; exhaust toxicity is set by the settings of the ECU controller.
Principle of operation
The principle of operation of the air flow sensor on a VAZ consists of two parameters:
- DMRV Priora
- Amount of air consumed.
- Reaction time.
Different controllers react differently to these parameters, for example, If the sensor slightly overestimates or underestimates its readings, then the January -5.1 controller, due to the oxygen sensor, detects the error in the readings of 1 mass air flow sensor and adjusts the injection duration. But if the Sensor has a long reaction time, then the controller will not cope with the adjustment, and you will feel failures at the time of acceleration. The Bosch MP7.0 controller reacts more sensitively to this error, which leads to unstable idle speed, but failures during acceleration will be less noticeable than on January -5.1.
DMRV VAZ 2114: Check
Introduction
All cars with an injector have a number of different sensors that are necessary for the smooth and reliable operation of the engine. VAZ 2114 is no exception and also uses many sensors in its system. The output of one of the sensors is fraught with problems with the engine and leads to its uneven operation.
This article describes in detail one of the VAZ 2114 sensors, namely the mass air flow sensor. After studying this article, you can easily determine its malfunction based on its symptoms, and you will also be able to check the sensor for functionality.
Why do you need a mass air flow sensor?
The mass air flow sensor is designed to count the air supplied to the engine through the intake manifold. Air is mixed with fuel, forming a fuel mixture, to form a vehicle of the correct concentration and mixing fuel with air in the correct proportions is what the mass air flow sensor is designed to do.
Without a mass air flow sensor or with its connector disconnected, the engine will go into emergency operation mode, which will be indicated by the “checkengine” lamp, the fuel consumption of the car will also increase, and the idle speed will disappear. In a word, the engine will not work correctly.
What does it consist of?
The sensor is made of heat-resistant plastic in the form of a tube, inside of which a sensitive element is placed that reads the amount of air supplied to the internal combustion engine. In front of the intake, a special mesh is installed on the sensor to prevent debris from entering the sensor and the engine.
Sensor elements:
- Frame;
- Sensing element;
- Net;
Symptoms of a problem
The mass air flow sensor, like all sensors, when it fails, entails interruptions in the engine characteristic of its breakdown. Based on these signs, we can assume that the mass air flow sensor is faulty and begin checking it.
Signs:
- Unstable idle;
- Spontaneous engine stop;
- Increased consumption;
- Loss of power;
Price
Below is a table with the cost of the mass air flow sensor on the VAZ 2114.
Examination
The best way to check the sensor is to connect a known good one from another machine or a new one. But you should pay attention to the sensor number; when purchasing or replacing, the number must match, otherwise the correct operation of the sensor is not guaranteed.
Another check can be done using a multimeter, but only on engines that do not use the E-GAS system. Engines with an electronic gas pedal use a special frequency sensor, which is quite reliable and cannot be checked with a multimeter. The frequency sensor can be checked using diagnostics using the Chinese ELM-327 device via ADC channels.
So, let's start checking the sensor with a mechanical gas pedal.
Checking the power circuit
First you need to check the power circuit. For this:
- Remove the connector from the sensor
- Turn on the ignition on the car
- We switch the multimeter switch to the DC voltage measurement mode with a limit of 20V.
- We connect one of the multimeter probes to the motor housing, and the other to the terminal of connector No. 2 (there is a number on the connector block). The device should show the presence of a voltage of at least 12V.
- Then we move the probe from contact No. 2 to contact No. 4. The device should show the presence of a voltage of at least 5V.
If the readings are normal, you can begin checking the sensor. If the voltage is slightly less, then you need to check the battery. If there are no readings at all, then it is necessary to check the power circuit for a broken wire.
Sensor check
The mass air flow sensor must be checked with the ignition on and the connector connected. To carry out diagnostics, you will need needles from a syringe or pins.
- We set the switch on the device to measure DC voltage up to 2000 mV (2V).
- We insert needles or pins into the connector, namely into wires 1 and 3 (as shown in the picture) and measure between these two contacts. We compare the obtained data with the sensor status table.
Sensor status table
| Voltage, (V) | State |
| 0,99…1,01 | Ideal sensor condition |
| 1,01…1,02 | Good condition of the sensor |
| 1,02…1,03 | Sensor condition is satisfactory |
| 1,03…1,04 | Sensor is on edge and will need replacement soon |
| 1,04…1,05 | The sensor is practically inoperative |
| 1.05... and above | Faulty sensor, needs replacement |
Based on these data, we can draw a conclusion about the operation of the sensor.
Replacement
Replacing the sensor is quite simple; this work will not cause any effort or difficulty. To work you will need:
- Open-end wrench 10mm;
- Screwdriver "+"
Price
We remind you that this sensor is the most expensive of all sensors, its cost ranges from 1500 to 4000 depending on the model.
Home→Catalog→Engine→Power system→Max air flow sensor→Max air flow sensor VAZ-2110,1118,2170, 2123, 21214 1.6 l. (BOSCH) (116) (company packaging LADA)Characteristics
| Supplier code: | 175075 |
| Vendor code: | 21083-1130010-20 |
| Manufacturer: | Lada-Image CJSC |
MAF VAZ-2110,1118,2170, 2123, 21214 1.6 l. (BOSCH) (116) (branded packaging LADA) In stock ( 10 )4,575 RUR + 137.25 to the bonus account MAF VAZ-1118,2170 with email pedal (BOSCH) (branded packaging LADA) MAF VAZ-1118,2170 with el. pedal (BOSCH) (company packaging LADA)Characteristics
| Supplier code: | 155868 |
| Vendor code: | 21700-1130010-00 |
| Requisites: | Product, Product, 00-00001667, DMRV VAZ-1118,2170 with el. pedal (BOSCH) (original packaging LADA), 0.23 |
| Basic unit: | PC |
| Tax rates: | Tax free |
| Manufacturer: | BOSCH |
DMRV VAZ-1118,2170 with el. pedal (BOSCH) (branded packaging LADA) Out of stock RUB 3,430 + 102.9 to the bonus account MAF VAZ-2113-15, 1118-19, 2170, 21214-2123 (from 2005 onwards) Euro 2.3 Pekar MAF VAZ-2113-15,1118-19,2170,21214-2123 (from 2005 onwards) Euro 2.3 PekarCharacteristics
| Supplier code: | 171268 |
| Vendor code: | 21083-1130010-20 |
| Requisites: | Product, Product, 00-00036261, DMRV VAZ-2113-15,1118-19,2170,21214-2123 (since 2005) Euro 2.3 Pekar, 0.31 |
| Basic unit: | PC |
| Tax rates: | 18 |
| Manufacturer: | Fuel systems LLC Pekar |
MAF VAZ-2113-15,1118-19,2170,21214-2123 (from 2005 onwards) Euro 2.3 Pekar In stock (5)3,035 rub.+ 91.05 to the bonus account MAF VAZ-2108-99, 2113-15,2110-12 (1999-2004 onwards) Euro 2 PekarDFMRV VAZ-2108-99,2113-15,2110-12 (1999-2004 onwards) Euro 2 PekarCharacteristics
| Supplier code: | 171267 |
| Vendor code: | 2108-3-1130010-01 |
| Requisites: | Product, Product, 00-00019121, DMRV VAZ-2108-99,2113-15,2110-12 (1999-2004 onwards) Euro 2 Pekar, 0.29 |
| Basic unit: | PC |
| Tax rates: | 18 |
| Manufacturer: | Fuel systems LLC Pekar |
MAF VAZ-2108-99,2113-15,2110-12 (1999-2004 onwards) Euro 2 Pekar In stock ( 2 )2,975 RUR + 89.25 to the bonus account MAF VAZ-2110-12 engineer, VAZ -2123 (eng. 1.5 l.) (BOSCH) (037) (company packaging LADA) MAF VAZ-2110-12 engineer, VAZ-2123 (dv. 1.5 l.) (BOSCH) (037 ) (company packaging LADA)Characteristics
| Supplier code: | 200027 |
| Vendor code: | 21083-1130010-10 |
| Requisites: | Product, Product, 00-00036259, DMRV VAZ-2108-99,2113-15,2110-12,2123 (1999-2004 onwards) Pekar, 0.31 |
| Basic unit: | PC |
| Tax rates: | 18 |
| Manufacturer: | Lada-Image CJSC |
MAF VAZ-2110-12 engineer, VAZ-2123 (1.5 l.) (BOSCH) (037) (branded packaging LADA) In stock ( 10 ) RUR 5,145 + 154.35 to the VAZ MAF bonus account -1118,2170,2123 doors 1.6 16 cells. Priora BOSCHCharacteristics
| Supplier code: | 220569 |
| Vendor code: | 0280218225 |
| Manufacturer: | BOSCH |
DMRV VAZ-1118,2170,2123 doors 1.6 16 cells. Priora BOSCH In stock (2) RUR 3,520 + 105.6 to the bonus account MAF VAZ-2110-15, 2121 (doors 1,7), 2111 s.o. injector (BOSCH) (004) (company packaging LADA) 0280218004 DMRV VAZ-2110-15.2121 (eng. 1.7), 2111 s.o. injector (BOSCH) (004) (original packaging LADA) 0280218004Characteristics
- VAZ 2109: replacing the main brake cylinder on your own
| Supplier code: | 198982 |
| Vendor code: | 21120-1130010-82 |
| Requisites: | Product, Product, 00-00001670, DMRV VAZ-2110-15,2121 (doors 1,7), 2111 s.o. injector “BOSCH” (company packaging LADA), 0.29 |
| Basic unit: | PC |
| Tax rates: | Tax free |
| Manufacturer: | Lada-Image CJSC |
DMRV VAZ-2110-15.2121 (engine 1.7), 2111 s.o. injector (BOSCH) (004) (company packaging LADA) 0280218004 In stock ( 10 ) 8,290 RUR + 248.7 to the bonus account MAF door 405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ-2123 (1.5 l.) UAZ-3160 BOSCHCharacteristics
| Supplier code: | 030534 |
| Vendor code: | 0280218037 |
| Manufacturer: | BOSCH |
DMRV dv.405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ-2123 (dv.1.5 l.) UAZ-3160 BOSCH In stock (5)4,490 rub. + 134.7 to the bonus account MAF VAZ-2110,1118,2170, 2123, 21214 (1.6 l.) (Kaluga) MAF VAZ-2110,1118,2170, 2123, 21214 (1.6 l.) ( Kaluga)Characteristics
| Supplier code: | 098516 |
| Vendor code: | DMRV-116 |
| Basic unit: | PC |
| Manufacturer: | AUTOTRADE LLC |
MAF VAZ-2110,1118,2170, 2123, 21214 (1.6 l.) (Kaluga) In stock ( 8 )2,670 RUR + 80.1 to the bonus account MAF VAZ-2108-99,2113-15.2110 -12.2123 (1999-2004 onwards) PekarCharacteristics
| Supplier code: | 190538 |
| Vendor code: | 21083-1130010-10 |
| Manufacturer: | Fuel systems LLC Pekar |
MAF VAZ-2108-99,2113-15,2110-12,2123 (1999-2004 onwards) Pekar In stock (3)2,985 RUR + 89.55 to the bonus account MAF VAZ-2104-07 (door 8 class) since 2006 Euro 2 PekarDMRV VAZ-2104-07 (door 8 class) from 2006 Euro 2 PekarCharacteristics
| Supplier code: | 171266 |
| Vendor code: | 2104-1130010 |
| Requisites: | Product, Product, 00-00005917, DMRV VAZ-2104-07 (door 8 class) since 2006 Euro 2 Pekar, 0.27 |
| Basic unit: | PC |
| Tax rates: | Tax free |
| Manufacturer: | Fuel systems LLC Pekar |
DMRV VAZ-2104-07 (door 8 class) since 2006 Euro 2 Pekar In stock (2)2,690 rub.+ 80.7 to the bonus accountBOSCH 0 280 218 225 MAF VAZ 2170 PRIORACharacteristics
| Supplier code: | 244142 |
| Basic unit: | PC |
BOSCH 0 280 218 225 MAF VAZ 2170 PRIORA In stock ( 2 ) RUR 3,780 + 113.4 to the bonus account MAF VAZ-2104-07 injector 5WK97014 (Kaluga)Characteristics
| Supplier code: | 028645 |
| Vendor code: | 2104-1130010 |
| Manufacturer: | LLC "NPP Avtel" |
MAF VAZ-2104-07 injector 5WK97014 (Kaluga) In stock ( 3 ) 4,620 RUR + 138.6 to the bonus account MAF door 405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ -2123 (1.5 l. dv.) Kaluga MAF engine 405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ-2123 (1.5 l. dv.) KalugaCharacteristics
| Supplier code: | 098517 |
| Vendor code: | DMR-037 |
| Requisites: | Tovar, Tovar, 00-00036263, DMRV dv.405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ-2123 (dv. 1.5 l.) Kaluga, 0.31 |
| Basic unit: | PC |
| Tax rates: | 18 |
| Manufacturer: | AUTOTRADE LLC |
DMRV dv.405, 406 G-24-31105, G-3302, VAZ-2110-12 engineer, VAZ-2123 (dv.1.5 l.) Kaluga In stock ( 1 )2,670 rub.+ 80.1 per bonus accountBOSCH 0 280 218 037 Mass air flow sensor LADA 110/111/112Characteristics
| Supplier code: | 071698 |
| Vendor code: | 0280218037 |
| Manufacturer: | BOSCH |
BOSCH 0 280 218 037 MAF LADA 110/111/112 In stock ( 8 )4 820 RUR + 144.6 to bonus accountBOSCH 0 280 218 116 MAF LADA 110/111/112/117/118/119Characteristics
| Supplier code: | 071709 |
| Vendor code: | 0280218116 |
BOSCH 0 280 218 116 MAF LADA 110/111/112/117/118/119 In stock ( 10 )4,450 RUR + 133.5 to the bonus account MAF VAZ 1117-19 Kalina, 2170-72 Priora, LADA 4x4 (21214, 2131 ) with electronic accelerator pedal PekarCharacteristics
| Supplier code: | 502699 |
| Vendor code: | 2170-1130010 |
| Manufacturer: | Fuel systems LLC Pekar |
MAF VAZ 1117-19 Kalina, 2170-72 Priora, LADA 4x4 (21214, 2131) with electronic accelerator pedal Pekar In stock (5)2,500 RUR + 75 towards bonus account Absolute pressure and temperature sensor VAZ-1118,2170 ,2190, Vesta (door 21127)Characteristics
| Supplier code: | 472383 |
| Vendor code: | 21800-1413010-00 |
| Manufacturer: | ITELMA NPO LLC |
Absolute pressure and temperature sensor VAZ-1118,2170,2190, Vesta (engine 21127) Out of stock 1,955 RUR + 58.65 to the bonus account MAF VAZ-2110-15,2121 (engine 1,7), 2111 s.o. BOSCH injectorCharacteristics
| Supplier code: | 030533 |
| Vendor code: | 0280218004 |
| Manufacturer: | BOSCH |
DMRV VAZ-2110-15.2121 (engine 1.7), 2111 s.o. BOSCH injector Out of stock 5,220 RUR + 156.6 to the bonus account MAF VAZ-2113-15,1118-19,2170 (doors 1.6 8 cells) Euro 4 Characteristics
| Supplier code: | 598979 |
| Vendor code: | 11180-1130010-00 |
DMRV VAZ-2113-15,1118-19,2170 (doors 1.6 8 cells) Euro 4 Out of stock RUB 8,770 + 263.1 to bonus account
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DMRV. Sensors (VAZ 2108-2115) Diagnostics, compatibility, operating principle
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To assess the condition of the sensor with acceptable accuracy, you need a few minutes, a 10-mm open-end wrench, a shaped screwdriver and a Chinese tester with a fresh battery.
1. Turn on the tester in DC voltage measurement mode and set the measurement limit to 2 Volts. We find in the sensor connector a yellow wire - output (closest to the windshield) and a green wire - ground (third from the same edge). These are the sensor pins we need. In systems of different years, colors may change (! and the connector may already be changed), only the location of the pins remains unchanged. To assess the condition of the mass air flow sensor, it is necessary to measure the voltage between the indicated terminals with the ignition on, but NOT starting the engine! The diameter of the tester probes allows you to penetrate through the rubber seals of the connector, along the specified wires, without disturbing their insulation, reaching the contacts themselves and without causing harm to the seals themselves. It will be useful to spray HP grease on the probes. Turn on the ignition, connect the tester, take readings. The same readings can be taken without a tester from the on-board computer display, if anyone has one. In the “voltage from sensors” parameter group. Designated Udmrv=…
2. Evaluate the results. The voltage at the output of a working sensor in the “out of the package” state is 0.996…1.01 Volts. During operation, it gradually changes and, as a rule, increases. By increasing this voltage, one can quite confidently judge the degree of “wear” of the sensor. A voltage within the above range is the best result of this test.
The following are possible options:
1.01…1.02 is a completely working sensor, very good. 1.02…1.03 is also acceptable, but the sensor is no longer young. 1.03…1.04 - most of the resource is already behind, you can plan for a quick replacement. 1.04…1.05 - clearly a tired sensor, it has already served its purpose. If your budget allows, feel free to change it. 1.05...and higher are a source of problems, it’s high time to replace them.
3. If, according to the assessment results, the sensor has deviations, and in general, even if it does not, but since we have already gotten around to it, we carry out a visual inspection. Using a figured screwdriver, unscrew the clamp of the rubber corrugation-air intake at the sensor outlet, pull off the corrugation from it, and carefully inspect the internal surfaces of both the sensor itself and the corrugation. Attention! These surfaces must be dry and clean like... a baby's, without traces of condensation and oil! Their contact with the sensitive element of the sensor is the most common cause of its premature death. This happens both because the oil level in the crankcase is too high, and because the oil sump of the crankcase ventilation system is clogged, the outcome is usually the same. If this phenomenon occurs in the intake tract, replacing the sensor is contraindicated! Until the causes are eliminated, so that there is no excruciating pain later for wasted money.
4. Using a 10mm wrench, unscrew the 2 screws securing the sensor to the air filter housing and remove the sensor. On the front of it, on the inlet edge, which has just been removed from the filter, there must, by law, be a rubber sealing ring. It serves one purpose - to prevent the suction of unfiltered air into the intake tract through the sensor and further into the piston group. As a rule, the ring is not in place - it is stuck in the air filter housing and is avoiding its direct responsibilities. This can be confirmed by a thin layer of dust on the input grid of the sensor itself. We run our finger over it and draw conclusions.
If the rubber band was in place, we draw conclusions about its elasticity or the quality of the air filter. Another reason that kills the sensitive element! We take out the ring and restore the legality of the assembly. The ring has a sealing belt-skirt on the inner surface. When assembling, make sure that it does not curl up, which is also a source of dust. I understand about the air filter. The assembly, with the exception of the sealing rubber, is not tricky - first put it on the sensor, check the sealing skirt, then put it all together into the filter housing. Then the sensor enters the filter housing with noticeable force. We tighten the screws.
The described method is not exhaustive and absolute, but within the framework of an amateur express check it is quite worthy of attention. A more accurate method is only possible if you have professional equipment.
Mass air flow sensor
Mass air flow sensor is one of the most expensive sensors in a car. It is responsible for counting the air passing through it. These readings are necessary for proper mixing of air and fuel. The flow meter can fail if the air filter is not replaced for a long time, as well as with strong ventilation of crankcase gases due to the high content of oil combustion products in the internal combustion engine. It is located on the air filter housing and is attached to it with two bolts.
Signs of malfunction:
- Uneven idle speed;
- Increased fuel consumption;
- Long start of the internal combustion engine;
Purpose and principle of operation
The purpose of this device is to measure the amount of air passed into the engine cylinders. In my opinion, in order to diagnose problems with your own hands and successfully fix them, you must, at a minimum, know the structure and operating principle of the unit that interests us. Therefore, I propose to consider several types of mass air flow sensors.
Pete tube (vane flowmeter)
Air flow meter with pitot tube (vane)
This design is the earliest development. The principle of its operation is based on the deflection of a special blade by the air flow, on the axis of which there is a measuring device - a potentiometer (the greater the angle of rotation of the blade, the greater the resistance of the potentiometer winding). The device resembles a throttle valve in appearance, the advantages are ease of manufacture and low price.
Hot-wire type flow meter
A more modern device, the design of which contains a platinum wire with a diameter of approximately 0.07 millimeters, which is a heat exchange element. Operating principle: the said wire located in the air flow is cooled by the air flowing around it, and in order to maintain a given temperature difference between it and the air flow, it is necessary to supply a certain amount of electricity to it (the more powerful the air flow, the more electricity is required). Well, since in this case it is impossible to do without external contamination of the heating element, the system is equipped with a self-cleaning function from deposits: after stopping the engine running under load, the wire is briefly heated to a temperature of 1100°C. Modern cars use hot-wire flow meters that have measuring and heating resistors made from platinum layers deposited onto a silicon crystal.
The principle of operation of the mass air flow sensor
Explanation of the photo: part of the incoming flow (2) of the intake air (4), passing through the grille (3), hits the sensitive element (6), where its speed and quantity are analyzed by the electronic unit (1) with a known cross-section of the measuring tube (5).
Sensing element
Idle speed control
A sensor that keeps the engine idling. It is a DC motor with a worm gear; there is a metal wedge on the shaft, which, if necessary, opens or closes the air channels of the throttle assembly. Installed on the throttle valve, secured with two screws to the body. Quite often it fails due to contamination of the shaft or aging of the sealing ring.
Signs of malfunction:
- Uneven idle speed;
- Long start of the internal combustion engine;
- Spontaneous engine stop;
How to check the flow meter on a VAZ 2115 yourself
- If the “Check Engine” light comes on on the dashboard, you can determine errors using OBD codes using a car scanner. However, such equipment is not always at hand.
- The initial check can be carried out by simply disconnecting the flow meter connector and comparing the behavior of the engine with and without the mass air flow sensor. After disconnecting a working sensor, the car's behavior should worsen. A broken flow meter when disconnected will not change the operation of the motor.
- And finally, a relatively accurate test using a multimeter. It is carried out in two stages. First, the power supply to the device is checked with the disconnected connector. From the ECU, 12 volts should be supplied to pin 2, and 5 volts to pin 4. Measurements are made relative to weight, with the ignition on and the engine turned off. Then the voltage of the sensor signal is measured at the connected connector in a resting state (ignition on, engine not running). To do this, you need to equip yourself with a relatively accurate multimeter that can measure voltage with an error of up to 1/100 volt.
Regarding ground, there should be a voltage of 0.99 to 1.02 volts at pin No. 5. It is possible to increase the value to 1.05 volts, but this indicates a high degree of wear on the mass air flow sensors.
Fuel level sensor
Indicates the remaining amount of fuel in the tank. Installed directly in the tank on the fuel pump glass. It fails when the graphite contacts on the electrical board are rubbed. When replacing, you should pay attention to its type number, which is indicated on the board, since all types of FLS have different resistance. If an unsuitable sensor is installed, large errors in readings may occur.
Signs of malfunction:
- Incorrect readings about the presence of fuel in the tank;
Examination
The check is carried out in 2 stages: the first is a visual inspection, the second is a test using a device (multimeter or computer diagnostics). Let's consider each of the options in more detail.
First stage (visual inspection)
To do this, you need to remove the mass air flow sensor and inspect it.
The inspection includes checking:
- Integrity of contacts on the connector;
- Cleanliness inside the sensor;
- Integrity of the sensing element inside the sensor;
- No cracks or chips on the body;
If no damage is found, you can proceed to the second stage of the inspection.
Second stage (test with device)
To test the device, you can use computer diagnostics or a multimeter. In most cases, the ELM327 scanner and the OpenDiag program help to diagnose the sensor; you just need to install this program on your smartphone and connect to the scanner via Bluetooth, after which you can check the status of the sensor using the ADC channels.
