Our car service center is often visited by GAZelle cars, because this is commercial transport, which both day and night is like workhorse plows. Every day, many GAZelles hit the roads of our country and sooner or later certain breakdowns arise, which we try to eliminate! Today is no exception. A GAZelle Business with a UMZ engine came to our repair zone! Well, let's help business!

After listening to the client: the car does not pull, the check light is on. After you turn the ignition off and on again, the car sometimes starts to work as it should, but then the problem repeats. The rpms don't rise above 2000...

Here it is, a workhorse!

Fig.1

Where to start repairs? Of course with computer diagnostics. Connecting diagnostic equipment and read the errors that are registered in the engine control unit.

Fig.2

We are interested in the current error P2138 Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation. What does it mean? This error literally stands for: P2138 Incorrect voltage ratio "D"/"E" of the throttle position sensor or accelerator pedal. Our throttle valve is electronic, as is the gas pedal. That is, both the damper itself and the pedal may be faulty. In order to jam the pedal or throttle valve, you need to understand how they work, so first let’s look at them design features, device and let’s figure out what is the difference between a mechanical throttle valve and an electronic one.

The operating principle of the system with an electronic throttle valve and an electronic gas pedal.

And so, first of all, let’s look at the design of a mechanical throttle valve and figure out how the adjustment takes place. idle move.

Fig.3 Mechanical throttle (rpm 840..900)

In a mechanical throttle valve (Fig. 3), the idle speed control (4) is responsible for idle speed (engine speed). The throttle valve itself (penny 1) does not participate in idle speed control in any way. The idle speed control sets 55...65 steps (mikas 7.1) to maintain speed in the region of 800...900 rpm. The more steps the idle speed control has, the higher the engine speed will be, because... more air will flow through the bypass channel (3).

Fig.4 Mechanical throttle (rpm 1300..1400)

To maintain idle speed at 1300...1400, the idle speed controller (2) sets approximately 115...120 steps (Mikas 7.1). In this position, the regulator rod (4) increases the flow of air through the bypass channel (3), thereby increasing the speed.

But how does idle speed control work with an electronic throttle valve, and what parts does it consist of?
The GAZ electronic throttle valve consists of the following parts (Fig. 5): the valve itself (penny 1), a gear motor (2) that controls the valve (penny 1), and two resistive position sensors (3)

Fig.5 Electronic throttle (rpm 850..900)

Let us clarify that in cars with an electronic throttle valve there is no idle speed regulator as a separate part. The throttle valve itself is responsible for adjusting the idle speed (penny, 1). To maintain idle speed, the throttle valve is opened slightly by 5...6% and the air that is needed to maintain idle speed passes through the valve itself (1). The damper is controlled by a gear motor (2). Sensors (3) read the current position of the damper.

Fig.6 Electronic throttle (rpm 1400..1500)

In order for the engine speed to increase to 1400....1500, the motor (2) opens the throttle valve by 10...12%. Thus, the electronic damper itself participates in the process of adjusting the idle speed. The electronic throttle valve must be kept clean, therefore, in order to prevent engine speed from floating, it must be cleaned much more often than a mechanical throttle valve.

If the mechanical throttle is controlled by a throttle cable, then who is responsible for controlling the electronic throttle? In order for the control unit to understand at what angle to open the throttle, it must first read the current position of the gas pedal. Our gas pedal is also electronic and consists of the pedal itself and two resistive sensors (R3, R4) Fig.7.

Let's consider Option 1. The gas pedal is not pressed.
The ignition is on, the gas pedal is not pressed, the throttle is turned to 7.8%, why not 0% you ask? We explain: because Since our throttle valve is electronic, the idle speed regulator, as you already understood, is missing, but we need air to ignite the mixture. It is precisely through the gap of 7.8% that this air enters during engine starting.

Fig.7 The ignition is on, the pedal is not pressed, the throttle is closed (ajar) by 7.8%.

What parameters can we observe with a working throttle valve and a working gas pedal?

Fig.8 Typical parameters for the values ​​of a working gas pedal and throttle valve (the pedal is not pressed)

Table 1. Indications of a working gas pedal and throttle valve (pedal not pressed)

	R3 ADC_DPS 1 (IN) 0.97 , R4 ADC_DPS 2 (IN) 0.49. To check the accuracy of the readings you need to know the following: readings R3 (ADC_DPS 1 (IN) 0.97 ) exactly 2 times more readings R4 (ADC_DPS 2 (IN) 0.49 ). We have R3(ADC_DPS 1 (IN) 0.97 ) / 2 = 0.485 (0.49), which corresponds to the value of R4 ( 0.49 V)
	0.78 , R2 ADC_ETS2(B) 4.22. 5 volt. We have R1(0.78) + R2(4.22) = 5 volts. This means that in the ignition on position (the pedal is not pressed) the throttle OK.

Let's consider Option 2. The gas pedal is pressed all the way.
The ignition is on, the gas pedal is pressed all the way, the throttle is turned to 24%. Why not 100% you ask? Well, that’s how the manufacturer built it into the program.

Fig.9 The ignition is on, the gas pedal is pressed all the way, the throttle is open 24%.

On the computer screen when the gas pedal is pressed, we observe the following parameters.

Fig.10 Typical parameters for the values ​​of a working gas and throttle pedal
dampers (pedal pressed all the way).

Table 2. Indications of a working gas pedal and throttle valve (pedal pressed all the way).

The gas pedal readings (highlighted in yellow) are the following parameters: ADC_DPS 1 (IN) 3.67 ,ADC_DPS 2 (IN) 1.84. To check the readings, as we have already said, divide R3 (ADC_DPS 1 (IN) 3.67 ) by 2 and we get 1.835 (1.84), which corresponds to the R4 ADC_DPS indicator 2 (IN) 1.84. This means that when the gas pedal is positioned to the floor, our gas pedal shows the correct values, which means it is working properly.

Throttle readings (highlighted in red) are parameters: ADC_ETS1(B) 1.42 , ADC_ETS2(V) 3.58 In total, the voltage R1+R2 of the throttle position sensors must correspond to 5 volt. We have R1(1.42) + R2(3.58) = 5 volts. This means that in the ignition on position (the gas pedal is pressed to the floor), the throttle valve shows the correct value, which means OK.

And so, we considered options for the operation of the throttle valve and gas pedal, provided that they are fully operational, but let’s return to our GAZELLE and the error P2138, which is written to the ECU memory when one of the values ​​does not match, we remind these values.

Working gas pedal: the gas pedal voltage R3 divided by 2 is equal to R4, i.e. R3/2 = R4.
Serviceable throttle valve: the sum of the voltage R1 and R2 of the throttle valve is 5V, i.e. R1+R2= 5v.

If one of these conditions is not met, then error P2138 appears - Incorrect voltage ratio "D"/"E" of the throttle position sensor or accelerator pedal. D and E in our case are R1, R2 and R3, R4, respectively. Therefore, in order to reject the gas pedal or electronic damper, you need to carry out the checks described above. Without wasting time, we begin to check our readings on the faulty car.

Checking the throttle and gas pedal readings of a faulty GAZelle car.

First, look at the voltage readings of the throttle valve and gas pedal with the car turned off and the ignition on. And what do we see?

Fig.11 The ignition is on, the pedal is not pressed.

Table 3. Indications of a defective gas pedal (pedal not pressed)

	R3 ADC_DPS 1 (IN) 0.98 , R4 ADC_DPS 2 (IN) 3.75. To detect defects you need to know the following: the readings of R3 are exactly 2 times greater than the readings of R4 for a working gas pedal. We have R3(ADC_DPS 1 (IN) 0.98 ) / 2 = 0.49 (0.49), which does not correspond to the value of R4 ( 3.75 V). This means that our gas drop shows “garbage” - the pedal is faulty.
	Throttle readings (highlighted in red) are the parameters: R1 ADC_ETS1(B) 0.78 , R2 ADC_ETS2(B) 4.22. In total, the voltage R1+R2 of the throttle position sensors must correspond to 5 volts at the correct throttle valve. We have R1(0.78) + R2(4.22) = 5 volts. This means that in the ignition on position (the pedal is not pressed) the throttle OK.

Fig.12 The ignition is on, the pedal is not pressed (the pedal is pressed all the way).

Table 4. Indications of a defective gas pedal (pedal pressed all the way).

	Indications of a defective gas pedal (highlighted in yellow) are the following parameters: R3 ADC_DPS 1 (IN) 3.72 , R4 ADC_DPS 2 (IN) 4.13. We check: R3(ADC_DPS 1 (IN) 3.72 ) / 2 = 1.86, which does not correspond to the value of R4 ( 4.13 V). This means that our gas drop, just like in the first case, shows “garbage” - the pedal is faulty.
	Throttle readings (highlighted in red) are the parameters: R1 ADC_ETS1(B) 0.80 , R2 ADC_ETS2(B) 4.21. We check: R1(0.80) + R2(4.21) = 5.01 volts. This means that in the ignition on position (the pedal is pressed all the way down) the throttle OK.

Pay attention to the throttle opening percentage on Figure 12. provided that the gas pedal is pressed all the way. Due to a faulty gas pedal, the ECU cannot detect that the gas pedal is pressed and therefore the throttle opening percentage will remain around 7.1%. If the gas pedal were in good working order, then the readings should correspond Figure 10.

Well, we have defected the electronic gas pedal. Let's start dismantling it, take it apart and find out what happened to it.

To disassemble the electronic gas pedal, you need to unscrew four screws.

Rice. 15. Unscrew the 4 screws.

Fig. 16. Remove the top cover with the board and resistors.

Here is a wiring diagram for our pedal.

Rice. 17. Connection diagram between the accelerator pedal and the ECU.

How is the connector on our gas pedal numbered?

1. red power supply +5 volts sensor 2 pedals
2. brown-orange power supply +5 volts for pedal sensor 1
3. brown-pink pedal sensor 1 signal
4. brown common sensor 1 pedal
5. red-pink common sensor 2 pedals
6. brown-green pedal sensor signal 2

Rice. 18. Pinout of gas pedal contacts.

Fig. 19. Gas pedal sensor board

On Figure 19 a shiny (brushed) area is visible (highlighted green) on the resistive layer, due to the fact that the gas pedal slider is constantly moving forward and backward. Over time, this layer wears out a lot and the resistance of the coating becomes different, and that’s when miracles begin.

So that the car works properly and does not appear at the service station for as long as possible, except in cases Maintenance, you need to treat it carefully. One of the important nodes iron horse is the throttle valve (TZ). This mechanism plays an important role in the operation of diesel or gasoline engine. It doesn’t matter whether it’s a carburetor power point or injection. The remote control can be either mechanically or electronically driven. In the latter case, sometimes it becomes necessary to adapt the throttle valve. How to do it? Let's try to figure it out, and at the same time take a closer look at the types of this node. We will also find out whether this needs to be done, and what could happen otherwise.

Purpose of the throttle valve

Not a single car in the world can do without such a unit as a throttle valve. The mechanism is a transverse channel regulator that changes the amount of flowing liquid or gas. That is, at its core, the damper is an air valve. When it is closed, the pressure intake system is equated to a vacuum, and when it is open, it is compared to the external atmospheric one.

By pressing the accelerator pedal, the degree of opening of the damper is adjusted. Accordingly, how much air enters the engine cylinders depends on this. Almost everyone modern car equipped with an injection engine, where all important responsibilities are assumed

As some car enthusiasts know, the optimal ratio of gasoline to air is 1:14.7. By detecting the throttle position and the amount of air using sensors, the ECU regulates the operation of the injectors and fuel pump. This knowledge will be useful in deciding how to adapt the throttle valve.

In other words, the computer commands how much fuel needs to be supplied to the engine in order to maintain optimal proportions.

Mechanical throttle

Currently, a mechanically driven damper can only be found in budget car configurations. In such a mechanism, the damper is connected to the accelerator pedal via a metal cable, fixed to the shaft and placed in a housing on which sensors are also located:

• throttle position (TPP).

It all looks like separate block. Various pipes also lead to it; coolant is supplied and discharged through one, and through others the crankcase is ventilated and fuel vapors are captured.

Thanks to the IAC, the required number of crankshaft revolutions is maintained when the damper is closed. The regulator itself consists of a stepper motor and a special valve. Together they regulate the amount of air, regardless of what position the throttle valve is in. Usually there are no problems regarding how to adapt the throttle valve in the case of a mechanical drive.

Electromagnetic throttle valve

The electronic analog, unlike a mechanical unit, allows you to achieve the optimal torque value in any engine operating mode. The level of fuel consumption is reduced, and driving such a car is comfortable and safe. Main distinctive features(and in this case, the advantages) are the following:

• idle speed is controlled by moving the throttle valve;
• there is no mechanical connection between the pedal and the damper.

Due to the fact that there is no mechanical connection, torque can be controlled electronically instead of the gas pedal. The damper module itself consists of the following elements:

• housings;
• the damper itself;
• electric drive;
• return spring mechanism;
• damper position sensors.

Installing not one, but two damper position sensors in the module will improve reliability. For this purpose, magnetoresistive devices or potentiometers with sliding contacts can be used. It is precisely because of the breakdown of these elements that it is necessary to decide how to adapt the throttle valve on many cars.

If a malfunction occurs in the electric drive, the damper is brought to the emergency position due to the return spring mechanism. In this case, the module itself must be replaced, which can only be done as an assembly.

Throttle valve clogged and cleaning intervals

From time to time, the throttle valve inevitably becomes clogged, which manifests itself in various ways. In this regard, a reasonable question arises: how often should it be cleaned? It is not entirely possible to answer this unequivocally, since there are no recommendations on this matter. Some car owners visit auto repair shops when they suspect an engine problem.

Some people believe that the damper needs to be cleaned after every 40,000-50,000 km. Others have a different opinion and clean the damper more often, after 30,000-40,000 km.

Typically, black carbon deposits on the valve indicate low quality fuel. When operating a vehicle with such gasoline, there is a risk of oily deposits forming. After this, there should be no question whether the throttle needs to be adapted.

As a rule, if the piston group is experiencing some problems, then a characteristic sign is the valve becoming coked with soot and oily impurities. Sometimes this indicates crankcase ventilation is clogged.

Signs of a clogged damper

When the throttle valve becomes clogged, the engine begins to operate in an unstable mode. Typical signs of a malfunction in this case are:

• increased speed idle move;
• delayed engine response to pressing the accelerator pedal;
• while the car is moving, jerks are observed, and sometimes the vehicle changes speed independently, without the driver’s participation;
• abrupt release causes the power plant to stop.

In some cases on dashboard lights up CHECK indicator. Sometimes tar deposits settle on the throttle shaft, causing it to seize. Then the gas pedal is pressed with noticeable force.

Before moving on to solving the problem of how to adapt the throttle valve on a Skoda or any other car, you need to make sure that the diagnosis is accurate by carrying out visual inspection mechanism. To do this, you need to remove everything that is possible in order to open access to the module. Be careful not to accidentally disconnect

Cleaning the remote control

If the reason unstable work the engine is a dirty damper, it is worth moving on to cleaning it. To do this, you can contact a reliable service station. Among the large number of workshops, you can find one that specializes in specific brands (Audi, Volkswagen, Toyota, Mercedes and others). However, the owner can do all the work himself, since much experience and skills are not required in this matter.

At service stations, the cost of the procedure may depend on a number of factors:

• complexity of the work - for some cars, access to the remote control will require the dismantling of many parts;
• service station service level - as a rule, the larger the organization, the more expensive it is;
• location - in large cities you can leave more money than in the periphery.

Cleaning the throttle valve is a simple procedure, after which you usually need to think about how to adapt the throttle valve on a Nissan or any other car.

Any car owner can perform this procedure independently. No special knowledge or skills are required here. All you need to get to the damper are tools and rags (preferably soft ones). You also cannot do without a special product - mainly the carburetor cleaner "Carb Cleaner" is used.

Self-cleansing procedure

If the damper is electronically actuated, then it is better to remove the negative terminal of the battery. Next, you can do everything according to simple instructions:

• dismantle the air filter by unscrewing the pipe clamp;
• disconnect all connectors of the throttle module and other pipes;
• move the receiver air filter to the side so as not to interfere, and begin cleaning the damper;
• upon completion, reassemble the damper module in reverse order, checking that everything is in place;
• After assembly, start the engine and check the idle speed.

In some cases, before you begin to adapt the throttle valve on a Toyota, Nissan or Skoda, it is necessary to remove the throttle itself, which allows you to completely clean the valve. To do this, you will need a 5 mm hexagon to unscrew the 4 fasteners. Removing the throttle should be done with great care, as there is a risk of damaging the gasket.

If, after cleaning the throttle body, increased idle speed is observed, it means that the damper needs to be adapted. What this is is further in the topic of the article.

The need to adapt remote sensing

This definition refers to the operation (or training) that is carried out so that the ECU “knows” what position the throttle valve is in relative to the degree of depression of the accelerator pedal. This procedure is simply necessary if the engine is running unstable. idle speed.

For most Toyota, Lexus, Mercedes, Nissan, and Audi cars, it is necessary to adapt the throttle valve, as this allows you to eliminate the malfunction. The procedure is performed in the following cases:

• in the event of a critical drop in the voltage of the on-board network (the battery is switched off or completely discharged);
• the ECU was replaced;
• the valve was cleaned and the throttle was removed;
• when replacing the throttle module itself;
• The accelerator pedal was replaced, usually with an electronic one.

It is worth noting that due to the layer of dirt, the gap between the damper and the body changes, and after cleaning the damper, its position has changed. But the ECU “has no idea” about this and continues to control the fuel supply according to the previous indications (before the cleaning operation). Adaptation will completely eliminate this gap and restore engine performance.

The simplest way to carry out adaptation

Now the question of whether it is necessary to adapt the throttle valve after cleaning should definitely not arise if there were still doubts. The easiest way to carry out the operation is with a simple reset. To begin with, it is worth warming up the engine well to operating temperature, for which you need to take a short trip. Then, turning off the engine, disconnect the negative terminal of the battery and wait. Depending on the brand of car, the waiting time can be 10-30 seconds or 15-20 minutes.

During this period, all ECU parameters should return to the original (factory) settings. Next, all that remains is to connect the terminal and start the engine - the speed should return to normal.

Adaptation using the example of some cars

Another method, which we will consider using the example of one well-known German mark, also involves adaptation without a computer. Here you should warm up the engine to a temperature of approximately 70-99°C. The battery voltage must be at least 12.9 Volts when the engine is not running. The action plan for how to adapt the throttle valve on a Volkswagen will be something like this:

• After warming up and turning off the engine, you should wait a short period (5-10 seconds).
• With the gas pedal released, turn on the ignition and wait 3 seconds.
• After 3 seconds, you need to press the accelerator pedal all the way 5 times and release it back. Act quickly, as you only have 5 seconds to do this.
• After the 5th exercise, you should wait a pause.
• After 7 seconds, press the pedal all the way again and hold it in this position until the “CHEK” indicator starts flashing (≈ 10 sec.), then it should remain on continuously (≈ 20 sec.).
• When the indicator lights up constantly, count to three and only then release the pedal.
• Start the engine (repeat if necessary), wait 20 seconds, then lightly accelerate (2000-3500). If the tachometer shows 700 rpm at XX (+- 50), it means that the adaptation was successful.

In this case, it is necessary to strictly adhere to the time intervals of each setting step. This is the only way the ECU training will go smoothly. But before that, it’s worth studying the adaptation features and the possibility of a manual procedure for your car. Perhaps only service station specialists can help.

How does an electronic gas pedal work, how are its advantages and disadvantages manifested, what malfunctions are most common, and how to deal with them? All these questions are very relevant, because today many car manufacturers have replaced the traditional cable drive with a more modern electronic pedal.

Electronic gas pedal - how does it work?

Modern technologies are aimed at making our lives as easy as possible. On the one hand, this is a huge plus, but on the other hand, they simply deprive us of the opportunity to make any decision, or rather, they correct it, and in such a way that it is not always possible to achieve the desired result. This is clearly visible in the operation of the electronic pedal, which is so popular in the modern automotive industry. Although for those who feel insecure behind the wheel, and especially do not delve into the technical nuances of the car, this innovation is only a plus.

The principle of operation of the electronic gas pedal is as follows: after the driver presses the accelerator, data on pressure angles immediately enters the control unit through special sensors. Next comes the move The ECU, which calculates the required opening angle, and the drive, based on the data received, opens it to this angle. Moreover, if it suddenly becomes necessary to change the value of this angle (for a more economical mode or safety), the control unit does it itself, without receiving the corresponding command. It turns out that the driver cannot regulate 100% this process.

When is it necessary to replace the electronic gas pedal?

Due to the fact that this is an electronic drive, the main faults in it are related to the electronics. There are two sensors built into the pedal bracket that transmit commands to the control unit. If one of these sensors fails, a light on the panel will light up, which is responsible for the serviceability of the engine control system. In this case, the ECU goes into standby mode (the speed increases much more slowly). If two sensors fail, it will turn on emergency mode, and the engine will work like on . Since the sensors cannot be repaired, the electronic gas pedal must be replaced.

The wiring may also be damaged, and then the operation of the throttle will be disrupted. If the electric motor is worn out, then the monitor also displays an error indicating an accident. These damages can be eliminated, but if the accelerator of the electronic gas pedal, which is responsible for the dynamics of the car, fails, then this part should be immediately replaced with a new one. We'll look at how to do this below.

Electronic gas pedal repair – we fix the breakdowns ourselves

Basically, if any problems occur, the entire assembly must be replaced. But before taking such decisive action, it would not hurt to find out the cause of the breakdown. To do this, of course, it is worth reading the information on how to check the electronic gas pedal. To do this, you need to disconnect the block and sensors, and then unscrew the fastening nuts and remove the pedal.

To directly check, you will need a multimeter: by connecting it to different terminals, we monitor the change in electrical resistance. It should decrease smoothly, but if jumps are observed, then the part is faulty.

In some cases, it is also possible to repair the electronic gas pedal, for example, if the wiring is damaged. So, having discovered a defect (the insulation is broken, the wires themselves are damaged, etc.), you need to act according to the following scheme. Having freed the gear mounting axis, remove the harness. To do this, you need to unsolder the wires, release the bracket and pull out the cable. Then we replace the wires, and, having disassembled the connector under the pedal, solder them. Now you can assemble the damper and drive safely.

If the car reacts to pressing the accelerator, so to speak, “with a delay,” then a spur (electronic corrector) of the gas pedal is needed. This device allows you to reduce the interval between pressing and opening the damper to a minimum. This is a separate module that connects to the sensors and, through a microprocessor, converts the signals supplied from them, and then supplies them to the controller.

So we see that the electronic gas pedal, tuning of which is possible in any specialized center, on the one hand, is a clear result of progress, and on the other hand, it somewhat limits our desires. True, if you do not belong to the category of those people who need to “drive with the breeze”, but prefer to drive carefully with minimal fuel consumption, then this option will be just for you.

The importance of the throttle valve adaptation procedure can hardly be underestimated, and not every car enthusiast knows how to perform this operation on their own.

1

When operating the throttle assembly of any modern vehicle A lot of contaminants in the form of dust, soot, and oil gradually accumulate on the surface of the throttle. They form a layer of dirt, which makes the air gap between the damper and the car's air duct smaller than the established norm. This gap is important for the normal functioning of the “heart” of the car, since thanks to it the idle speed is maintained at the required level.

When it decreases, the vehicle's electronic control unit (car computer) slightly opens the damper by introducing coefficients that take into account changes in its cross-section. Up to a certain point, the ECU manages to maintain the air gap at a constant level, but sooner or later it will still have to be cleaned of dirt. After flushing this unit, the engine speed will certainly increase due to the fact that the cross-section of the throttle, freed from the contaminant layer, will become larger.

The procedure for returning to the initial (set by the manufacturer) position of the damper is usually called training or adaptation.

2

The need for such an operation involving reduction to a standard indicator high speed idle speed occurs not only after flushing the throttle assembly, but also in other cases, in particular in the following:

• after complete discharge battery vehicle;
• after replacing or removing the accelerator pedal;
• after replacement or reconnection electronic unit vehicle control.

Undoubted signs indicating that the damper needs to be trained immediately are the following phenomena:

• whistling when revving;
• inadequate behavior of the engine at idle;
• lack of power at idle or failures.

3 Conditions for carrying out the idle speed adaptation process

Before starting training, a number of prerequisites must be met:

• travel by car for 10 minutes;
• ensure that the battery voltage at idle is at least 12.9 V;
• warm up the gearbox;
• The wheels of the vehicle must be straight, the steering wheel must be in the middle position;
• engine temperature – 70–95 °C;
• all devices that put a load on the car’s electrical network (heated windows, headlights, etc.) should be turned off;
• selector automatic transmission gears are set to N or P.

4

It is advisable to adapt these devices before you teach idle speed. If the cable of the sensor that sends the signal about the accelerator pedal position is disconnected, you must perform the following steps:

1. Release the pedal completely.
2. Turn the ignition key to “ON” and wait at least two seconds;
3. Turn off the ignition, wait 10 seconds;
4. Repeat the procedure according to point 2, and then according to point 3.

The described procedure (you must admit, it’s not at all complicated) will teach the damper to open correctly. But to adapt the valve to the “Closed” position, the following operations should be performed:

1. Release (fully) the accelerator pedal.
2. Place the key in the "ON" position.
3. Switch the ignition to “OFF” and wait 10 seconds.
4. We make sure that the valve lever moves within 10 seconds (a characteristic sound indicates that there is movement).

5

Now you can proceed directly to learning how to idle, “armed” with a stopwatch and a little bit of patience. The procedure is performed like this:

• The engine starts and warms up to standard operating temperature.
• The ignition is turned off and no action is performed for 10 seconds.
• The ignition turns on (the accelerator pedal is in the released position), wait 3 seconds.
• The following actions are performed five times in a row: the accelerator pedal is fully depressed and fully released.
• After 7 seconds, the pedal is pressed again (fully) and maintained in this state for 20 seconds.
• The pedal is released completely (and without delay) at the moment when the malfunction indicator on the panel stops flashing (it should be lit steadily).
• Then immediately, without touching the accelerator pedal, you need to start the engine so that it can idle.
• We wait about 20 seconds.

After all the announced actions, we accelerate the engine (2-3 times) and make sure that the ignition timing and idle speed standards comply with the standards. At this point, the damper adaptation procedure can be considered complete.

Sometimes the engine malfunctions and its speed is out of the specified values. As a result, the idle speed becomes unstable and loss of power occurs.

It seems that the engine will stall any minute. This is explained by wear of the part, and as a result, an increase in the gap between the throttle body and the valve. The broken gap allows more air to pass through than normal, and this causes a change in the composition of the fuel mixture.

The result is engine failure. When the valve (penny) wears out, it becomes necessary to replace it. Due to the simplicity of the design, it will not be difficult to order it from a familiar turner or find it on the Internet from some “Kulibin”. The price of the purchased part will be much higher.

Since new car models already come with electronic throttle control (electronic pedal), malfunctions in the vehicle’s electrical equipment can also lead to operational errors.

A sharp surge in voltage in the car network, removal/replacement of the electronic control unit, accelerator pedal - all this can cause a malfunction of this part of your car. Then it becomes necessary to return all parameters to normal.

Examples of throttle valve adaptation on VAG and Lancer IX vehicles

In this video, they will tell you and show you how to adapt the damper for a VAG car.

Adaptation of remote sensing to Volkswagen Golf 4:

• We warm up the engine to t=80 0 C and turn off the car. Then we connect the USB-KKL cable to the diagnostic connector and, after turning on the ignition, launch the diagnostic program (VAG-COM 3.11).
• We enter section 01-engine.
• We poll the fault memory (02).
• We erase detected faults (05).
• After returning to the previous menu, enter the “adaptation-10” section.
• If the group value is 001, press “start”.
• We wait 2-3 minutes, then close the program and disconnect the cable. Adaptation is complete.

Adaptation of remote sensing Nissan cars with electronic gas pedal:

• Turn on the ignition for at least 2 seconds.
• Turn off the ignition. The accelerator pedal adaptation procedure is completed.
• We are adapting the throttle valve. The accelerator pedal is released.
• Turn on the ignition and turn it off immediately. We wait at least 10 seconds. During this period of time, the damper moves.
• We teach air supply at idle speed (XX).
• Warm up the engine and gearbox to operating temperature.
• Disable everything electrical equipment car.
• We start the engine and bring it to operating temperature.
• Turn off the ignition and wait at least 10 seconds.
• Fully release the accelerator pedal.
• Turn on the ignition and wait at least 3 seconds.
• Within 5 seconds, press the accelerator pedal five times, then wait 7 seconds.
• Pressing the accelerator pedal, hold it until the CHECK stops flashing and lights up constantly (about 20 seconds are required).
• After the CHECK light comes on continuously, you must release the pedal within 3 seconds.
• We start the engine to run at XX.
• Press the pedal several times to check the stability of the XX.

Adaptation of remote sensing on VW Passat B5:

• Warm up the engine to operating temperature and turn off the car.
• We turn on the ignition, but do not start the engine.
• We connect the cable to the diagnostic connector and launch the program.
• We enter section 01-engine.
• We enter the basic settings (04).
• We select the damper adaptation - 060 for cars with electronically controlled damper, and value 098 for vehicles with cable-controlled damper.
• Let's start the adaptation.
• We are waiting for the “ADP RUN” entry to appear on the screen and the subsequent “ADP OK” entry.
• We return to the basic settings.
• Turn off the ignition. Adaptation is complete.

Throttle valve adaptation Mitsubishi Lancer IX:

• Warm up the car engine.
• We connect the ScanDoc scanner to the diagnostic connector. IAC values ​​= 0.
• We artificially restore the thermal gap in the damper (for example, we use a mixture of grease and waste oil).
• We start the engine and wait for the steady idling speed to be established.
• In the scanner, we launch the “Sas mode” mode and adjust the position of the IAC during adaptation.
• If the engine stalls when turning on the “Sas mode” mode, then unscrew the IAC screw to increase the engine speed to XX;
• We set the speed within 750-800 rpm.
• During adaptation, the IAC steps are set to 4-7;
• We forcibly complete the adaptation process and turn off the engine.
• We start the engine and check the IAC. If the adaptation was successful, then the IAC steps will be 27-28.

Adaptation of remote sensing on Audi A4:

• We warm up the engine to t=80 0 C and turn off the car. Then we connect the cable to the diagnostic connector and after turning on the ignition, launch the diagnostic program (VAG-COM).
• We enter section 01-engine.
• We enter the “Adaptation-10” section.
• On channel 00, press the “read” button.
• Save the result and return to factory settings.
• Enter the basic settings (04) and go to the measurement mode.
• Enter channel value 098, start adaptation.
• We are waiting for a message about the completion of the adaptation process.
• We return to the original section. Close the program and disconnect the cable.

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When should you not perform remote sensing adaptation?

It is worth noting that it is appropriate to carry out the above procedures using software and special diagnostic equipment in the event of a failure of the damper settings. It does not matter whether the electronic parameters are broken or the mechanical settings of the equipment are lost.

If the operation of the throttle is impaired due to wear, then it is more advisable to think about repairing or replacing the part. If suddenly, after the steps described above, adaptation does not occur, it is worth checking the motor responsible for opening/closing the damper. There may not be enough power for the node to operate properly.

Using the example of adapting the throttle valve of the above-mentioned cars, we can conclude that absolutely all cars are characterized by some common processes.

For example, cleaning the damper body inside and outside before starting adaptation is necessary for any make of car.

The only difference is that in some cars the damper is adjusted using a cable, and in others using electronics. This difference will manifest itself in the choice of adaptation parameters.