How to correctly install the throttle sensor for a VAZ 2110 16 valves

Hi all! I hope the information from this post will be useful and will be useful to someone! Good luck on the roads and a full tank!

The “symptoms” of a faulty throttle position sensor include the following:

1. Increased idle speed. 2. The engine stalls in neutral gear. 3. Idle speed floats. 4. Jerks during acceleration. 5. Deterioration in dynamics. 6. In some cases, the Check Engine light may come on.

Diagnosis of the throttle position sensor is carried out as follows:

1. Turn on the ignition, then check the voltage between the slider contact and the minus with a voltmeter. The voltmeter should show no more than 0.7 V. 2. Next, turn the plastic sector, thereby fully opening the damper, then measure the voltage again. The device should show at least 4 V. 3. Now turn off the ignition completely and pull out the connector. Check the resistance between the slider contact and any terminal. 4. Slowly, turning the sector, monitor the voltmeter readings. Make sure that the needle moves smoothly and slowly; if you notice jumps, the throttle position sensor is faulty and must be replaced.

Replacing the throttle position sensor:

1. Disconnect the wire from the “–” terminal of the battery. 2. Disconnect the block with wires from the throttle position sensor by pressing the plastic latch. 3. Unscrew the two mounting screws and remove the throttle position sensor from the throttle pipe. 4. Install the new sensor in the reverse order, but do not forget about the foam ring. The throttle position sensor does not require any adjustment, since the controller perceives idle speed (i.e. the throttle valve is completely closed) as the zero mark.

The “symptoms” of a faulty idle speed sensor include the following:

1. Spontaneous unregulated change in engine speed (sudden decrease or increase). 2. When turning on a “cold” engine, there is no increase in speed. 3. When using additional vehicle devices (heater, headlights), the idle speed is simultaneously reduced. 4. The engine stalls at idle and when shifting gears. It is necessary to remember that the readings of the VAZ 2110 injector idle speed sensor are not “readable” by the automatic on-board power system, and it is not integrated into the “Check Engine” alarm system.

Diagnostics of the idle speed controller is carried out as follows:

There are several ways to analyze the idle speed sensor, but the main ones - the simplest and most effective - are the methods described below:

1. First you need to “get” to the device, disconnect it from the connecting block of wires 2. Using the most common voltmeter, check for the presence of voltage - the “minus” goes to the engine, and the “plus” to the terminals of the same block of wires A and D. 3. Turns on ignition, and the received data is analyzed - the voltage should be within twelve volts, if less, then most likely there are problems with the battery charge; if there is no voltage, then you will have to check both the electronic control unit and the entire circuit. 4. Then we continue the inspection with the ignition on, and analyze terminals A:B, C:D one by one - the optimal resistance will be about fifty-three ohms; During normal operation of the IAC, the resistance will be infinitely high.

Also, with the sensor removed and the ignition on, if you connect a power supply to it, the conical needle of the sensor should move out; if this does not happen, it means it is faulty.

1. Remove the negative terminal of the battery. 2. Disconnect the IAC from the block harness. 3. Using a multimeter, we measure the resistance of the external and internal windings of the IAC, while the resistance parameters of contacts A and B, and C and D should be 40-80 Ohms. 4. If the instrument scale is zero, it is necessary to replace the IAC with a serviceable one, and if the required parameters are obtained, we check the resistance values in pairs B and C, A and D. 5. The instrument must detect an “open circuit.” 6. With such indicators, the IAC is in good working order, and if they are absent, the regulator must be replaced.

If the problem lies precisely in the operation of the regulator, then you should not rush and immediately go to a car service center, since you can clean the idle speed sensor yourself, as well as replace it.

Cleaning and replacing the idle air control.

The first thing you need to do is purchase a carburetor cleaner, and then get down to business: 1. The wire block is disconnected from the sensor. 2. Afterwards, both of its fastenings are unscrewed, and the sensor is removed. 3. If necessary, the IAC is completely cleaned of possible debris and contaminants on the cone needle and spring. 4. Also, do not forget to clean the mounting hole on the throttle assembly, where the conical needle of the sensor enters. 5. After cleaning, install everything in its original location.

If nothing has changed in the operation of the car - the same problems and inconveniences are present - then the regulator should be replaced.

It is worth noting that when purchasing you need to pay attention to the end mark 04. Sensors are produced with mark 01 02 03 04, so look at the mark of the old sensor and purchase the same one. If you put, for example, a sensor labeled 04 instead of 01, the sensor will not work. The following replacement is allowed: 01 to 03, 02 to 04 and vice versa.

Replacing the idle speed sensor can also be done without any problems:

1. The on-board system of the car is de-energized. 2. The block with wires is disconnected from the XX regulator. 3. The screws are unscrewed and finally the sensor is removed. 4. Attach the new device in the reverse order.

If you are faced with a situation where the engine idles unevenly or the car periodically stalls for unclear reasons , then the fault of the power unit may be a malfunction of the throttle position sensor . You should not immediately go to a service station, because this problem can be eliminated on your own.

Replacing the throttle position sensor on a VAZ 2110, VAZ 2111, VAZ 2112

Welcome! Throttle position sensor - it transmits readings to the controller (ECU) about what position the throttle valve is currently in; when you press the gas, the valve opens to a larger angle (Accordingly, you need to increase the fuel supply) and therefore the controller reads this (The sensor transmits readings to it) and increases the fuel supply to the cylinders, thanks to which the engine runs normally and without interruptions, unlike if the sensor fails (There will be serious problems with the operation of the engine, one of them is that it will not run The second one won’t really work either, the car will twitch when accelerating).
Note! To replace the throttle position sensor (abbreviated TPS), stock up on: A screwdriver, as well as a special one. a device with which you can check resistance (Ohm) and Voltage (Volt), such a device can be a multi-meter or an Ohmmeter with a Voltmeter separately, in addition to this, you will also need wires with bare ends (Or so that there are alligators at the ends) and that’s all, essentially, the latest devices and the wires are only needed to check the TPS for serviceability, if you don’t need this, then you don’t even have to buy anything like that, but just a sensor and a screwdriver so you can remove it!

Summary:

Where is the throttle position sensor located? It is very easy to find, just open the hood and look for the throttle assembly, when you find it, look for two sensors on the side of it, one will be installed a little lower, and the other a little higher, and this is the one above (Indicated by a red arrow in the photo below ) is located and will be the TPS, but that’s not all, there is a foam ring under the sensor (see small photo), it must be replaced with a new one and therefore when you come to the auto store, don’t forget to buy it if it’s included with the TPS didn't work for you.

When should I replace my throttle position sensor? First, let's talk about the symptoms, they are as follows: The car's fuel consumption increases, Idle Speed (Idle) starts to work, I don't understand how (As a rule, it rises or just floats and the car does not work stably on it), and jerks may also appear during acceleration , the car may periodically stall while driving and, of course, “CHECK ENGINE” may light up for you (But this may not happen at all).

We’ve sorted out the symptoms, but let’s say right away that they are inherent not only to this sensor, but can also be attributed to the DPKV (They are identical there), so if your car has them, it’s simply stupid to go and buy a new DPZ right away, because the engine didn’t work as it should. it can continue to work steadily in the same way, in this case the sensor is checked for serviceability (The easiest way, in order not to bother, is to check the sensor by replacing it with an identical one, and the identical one can be removed from the same injection system of a friend, for example, or from the seller will agree to install a sensor, see if the engine’s performance will change and if it changes, then buy it), if you don’t have such a chance (Find an identical sensor), then special. the device will be needed, we don’t see the point in explaining in words how to check the sensor using a multi-meter, because it’s long, it’s better to watch the detailed video that is posted below, it shows the whole test, if something is not clear, then ask your questions using the comment form below and we will answer you as soon as we can.

Coolant temperature sensor

Removing the fan regulator on a VAZ 2110 On a VAZ 2110, sensors can be used for different purposes, but most of them are mounted in the engine compartment. On an 8 or 16 valve engine, the fan sensor is a device designed to activate the fan. We are talking directly about a fan designed to cool a hot engine.

The controller turns on automatically when the power unit reaches a certain temperature. But it can also turn on when the engine is off. At first, this fact may be alarming for many owners of the “ten”, but there is nothing wrong with it, so there is no need to worry.

It is necessary to highlight the advantages of this controller:

As practice has shown, the fan sensor is one of the most reliable vehicle devices, since its design is based on a solid filler. When the ambient temperature increases, this filler begins to expand. The design of this device also includes a special spring-loaded lever

Thanks to this component, no defects occur during the operation of the regulator. The device prevents sparks from appearing, which is especially important for ensuring vehicle safety. In fact, this type of regulator itself is reliable. If you buy a high-quality device, then in the future you will notice that it will function for quite a long time; you can forget about the need to replace it for the next few years.

How to replace the throttle position sensor on a VAZ 2110-VAZ 2112?

Removal: 1. First, simply press out the latch that holds the wire block and then disconnect the block (see photo 1), insert the key into the ignition and turn it until all the devices light up, then turn on the device, namely the Voltmeter function and from device, place the minus probe (it usually comes in black) to ground (the ground can be the car body or engine), and connect the plus probe to terminal A of the wire block (All terminals on the block are marked, look carefully) and the device should give a reading of approximately 5 Volts, but in no case less, if this is the case, then everything is in order with the wiring and most likely the sensor itself is to blame, if the voltage is less, then either the controller is faulty or there is a problem with the wiring, after the operation, turn off the ignition don’t forget, and when the wiring is checked, you can start replacing the sensor with a new one, for which unscrew the two screws that secure it to the throttle body body and then remove the sensor, under it there will be a foam ring that must be replaced.

Note! If you are going to change the sensor, do not forget to remove the minus terminal from the battery, how to do this, read the article: “Replacing the battery on VAZ cars”, point 1!

Installation: The sensor is installed in the reverse order of removal; when installing, its leads should be directed towards the engine shield. To make sure that the sensor will be installed correctly, lean it against the throttle assembly and make sure that the holes for the screws in the sensor coincide with the threaded holes in body and then fully open the throttle valve using the sector (or the gas pedal, let an assistant gently and slowly press it all the way), if everything goes well, the throttle valve will open completely and you can then tighten the sensor mounting screws until they stop.

Additional video: Visually watch the process of replacing the TPS in the video below:

Source

TPS is not set to “0”

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The voltage on the sensor is normal, 0.4 volts, what does Mao have to do with it?

Yuri Petrovich

vadik

When will you stop reading text diagonally? Re-read the first post. We know about crooked children, but electrical engineering has not been canceled. The TPS ADC is normal, but the throttle opening zero block does not see.

Added after 5 minutes

Alternatively, this is a block with a non-native program, where master cheese makers have corrected the throttle zero adaptation algorithms. Anything can happen.

vadik

Isn't the sensor Herzog by any chance? I won’t say anything about the gazelle. And there are three options for the vase and they are all announced 1 Sensor quality. 2 Masses 3 corrected program. You can check it. 1 Turn on the ignition, the throttle should be at zero (if the throttle adaptation is not correct.) Check the ADC voltage of the sensor. 2 Start the car and check the voltage on the sensor while running. If the ADC has changed, check the sensor ground. 3 Install sensors from trusted manufacturers. (contactless ones sometimes make mistakes; at the same voltage they show either 0 or 2%)

TPS design

The throttle position sensor can be of two types:

film;
magnetic or contactless.

In its design, it resembles an air valve - in the open position the pressure corresponds to atmospheric pressure, in the closed position it drops to a vacuum state. The TPS includes DC and AC resistors (each resistance is 8 ohms). The process of opening and closing the damper is monitored by the controller, with subsequent adjustment of the fuel supply.

If at least one symptom of a malfunction occurs in the functioning system of this sensor, then fuel may be supplied to the engine either in excess or in deficiency. Such malfunctions in engine operation are reflected in the engine of the VAZ-2110 car and on its gearbox.

Diagnostics

Signs of a malfunctioning throttle sensor on a VAZ 2110 are not too different from other models

But there are some features that are worth paying attention to. The following signs may indicate a malfunction of the TPS:

Floating idle speed until the engine stops in neutral;
Jerks during acceleration, the car jerks and accelerates extremely difficult;
Check Engine
light is on .

These signs can usually indicate more than just problems with the throttle sensor. That's why drivers rush to check everything except TPS. Many people are also afraid of getting into electronic systems.

The ideal option is diagnostics using a special scanner. This allows you to recognize the cause of the phenomena without any problems. The error code can be 0122 or 0123. When the signal is low, the first code is issued, and when the signal is high, the second. Such computer readings indicate a clear problem with the sensor. Code 0122 may indicate problems with the wiring supplying the TPS.

Be sure to check all wiring for damage. If you don’t have a scanner at hand, then when checking all the elements, you should first check the throttle and its sensor.

Principle of operation

. To properly check the TPS, you need to know the features of its operation. This sensor is a potentiometer that transmits all information about the position of the throttle valve to the controller. It works as follows. By pressing the gas, you change the position of the damper, and the sensor reacts to this. There is a constant voltage at its outputs, which can vary.

The controller reads the readings from it and, based on this data, doses the fuel supply. If the TPS malfunctions, incorrect readings are given, and as a result, the fuel supply begins to be unstable. And you may notice malfunctions in the engine.

Location

. To check the device in detail, you need to find it. This is quite easy to do. In the VAZ 2110, the throttle sensor is located on the throttle pipe. It connects to the throttle shaft. This directly ensures the operation of the device. The sensor is secured with two screws.

The design and principle of operation of the throttle assembly

The device is designed to regulate the air supply to the engine and ensure its operation at idle speed. The node is a structurally complete element. Located between the air filter and the intake manifold, and consists of the following components:

Aluminum housing with pipe.
Adsorber fitting.
VAZ 2110 throttle position sensor (TPS).
Crankcase ventilation connection
Idle speed regulator.
Throttle control sector, with cable fastening mechanism.
Inlet and outlet heating fittings for remote control.
Throttle valve.

Mass air flow sensor (MAF)

It is one of the most important sensors. The mass air flow sensor is responsible for the formation of the air-fuel mixture. It measures the volume of air supplied to the intake receiver and transmits the readings to the electronic engine control unit, which in turn supplies the right amount of fuel in relation to air. The failure of this sensor affects many different functions of the internal combustion engine.

What affects the operation of the throttle position sensor?

TPS (another name for TPS) is designed to determine the position angle of the throttle valve (installed on its axis) and transmit the readings taken to the ECU. It also monitors the speed of movement of the damper (when the gas pedal is pressed sharply) and the moments when it is in its extreme positions.

A lot depends on these readings - the electronic control unit, based on the data received, forms the correct ignition timing under certain engine operating conditions, and issues commands to supply fuel in the required dosage. All this affects the formation of the optimal fuel-air mixture, and, accordingly, the power performance of the engine.

Also, based on the data received, the ECU adjusts the operation of electronic systems: ABS, ESP, cruise control, traction control and others.

Location and principle of operation of the meter

The sensor is installed on the throttle valve block and is mechanically connected to its axis. Thanks to this, the device is able to solve 3 problems:

inform the controller at what angle the throttle is currently open;
signal that the air supply is completely closed (the driver has released the accelerator pedal);
monitor the speed at which the damper opens.

Based on this information, the electronic powertrain control unit (ECU) makes a decision to increase or decrease the fuel supply and fuel injection for intense acceleration when the gas pedal is sharply pressed.

Reference. Two types of TPS are installed on cars: resistive and non-contact. The first ones are cheaper and therefore are found on all budget cars. The latter are more reliable and more expensive, and are installed on cars of medium and high price categories.

The operating algorithm of the resistive sensor is as follows:

At idle, the damper is closed and air flows into the engine through a separate channel. The voltage at the output of the device does not exceed 0.5 volts; the controller supplies fuel to maintain engine idle speed.
When the driver presses the gas pedal, the sensor slider moves along the resistive film. The resistance of the electrical circuit into which the device is connected in series decreases.
The ECU “sees” the increase in voltage in the meter circuit, makes a calculation, prepares the air-fuel mixture in the required quantity and supplies it to the cylinders. The maximum voltage at wide open throttle is about 4.5 V.
When the driver sharply presses the accelerator pedal, the controller notes a similar voltage surge and delivers a portion of the enriched mixture for dynamic acceleration.

Note. The operating voltage values are indicated for a common Russian car - VAZ 2110.

The non-contact throttle position sensor functions identically. The difference lies in the method of influencing the electrical circuit. A resistive device changes resistance using a slider moving across the film, while a non-contact device changes resistance due to the magnetic-resistive effect. Thanks to this principle of operation, the TPS lasts much longer and does not create problems for the owner of the car.

Is your TPS connected to ground?

Carefully disconnect the electrical connector from the throttle position sensor.
Check the connector and terminal for dirt or damage.
Set the multimeter to a suitable mode, for example, 20V on the DC voltage (DCV) scale.
Turn the ignition key to the ON position, but do not start the engine.
Connect the red multimeter probe to the positive terminal of the battery, indicated by the “+” symbol.
Touch the black probe of the multimeter to each of the three electrical contacts of the wiring connector that connects to the TPS.

* One of the contacts, when touched, a voltage of about 12 volts appears on the multimeter screen, is the ground contact. Pay attention to the color of this wire.

*If none of the terminals indicate 12 volts, this is a sign of a defect in the wiring that goes to the throttle position sensor. The sensor is not grounded, so it cannot work properly. In such a situation, you need to solve the wiring problem.

Owner reviews

Owners of LADA XRAY who independently performed the throttle valve zero adaptation procedure note that the car stopped twitching and acceleration became smooth.

Some reviews from Drive2.ru (link to post):

Let us remind you that we previously published an information letter from AVTOVAZ, which tells us what to do in case of vibrations and jerks when starting off a LADA car.

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Communication of the throttle valve with other automotive systems of the VAZ-2110

The throttle valve of a VAZ-2110 car is a component of the engine intake system and is directly connected to a large number of other vehicle systems. These include the following systems:

directional stability;
anti-blocking;
anti-slip;
anti-slip;
cruise control.

In addition, there are those systems that are controlled by the electronics of the gearbox. After all, it is this throttle valve that regulates the flow of air into the car system and is responsible for the quality composition of the fuel-air mixture.

More details about the appointment

The car throttle valve is one of the most important structural elements of the intake system, which is responsible for regulating the air supply. Without air, the formation of a combustible fuel-air mixture, and therefore the combustion of fuel as such, is impossible. You can immediately note that the operation of the element can greatly limit the entire system, because if there is not enough air supplied, then it is not possible to realize the full power of the engine. Conversely, if there is a lot of air, problems with ignition begin, and the mixture itself burns for too long at low (relative to normal) temperatures. The solution turned out to be both simple and complex at the same time: in addition to perfecting the operation of the throttle valve, regulate the fuel supply. This is where TPS comes to the fore.

The sensor plays a very important role in how the fuel is supplied. The signal from the sensor is read by the ECU, and only then the control element regulates the flow. If the sensor fails, the system begins to work incorrectly. Often, a car becomes less economical because it consumes too much fuel. One possible more serious problem: worsening dynamics. However, we will talk about this later.

Typical TPS problems

A malfunction of the throttle sensor can be determined by the following symptoms:

increase in speed intensity when the load is off;
deterioration of dynamic performance;
the appearance of jerks when picking up speed;
sudden stopping of the engine in neutral;
warning light with a light bulb.

In addition, there are other malfunctions. One of the most common is a decrease in the base coating thickness in the initial part of the slider stroke. This prevents the linear voltage level of the output signal from increasing. Another causal relationship may lie in the failure of the movable core. The breakage of one tip contributes to the appearance of a large number of burrs at the base. As a result, others also break, causing the slider to lose contact with the resistive part.

You can test the throttle sensor yourself by following these steps. The first step is to start the ignition; if the warning light does not light up, then we take the converter directly. Using a multimeter, you should measure the potential difference between “−” and the slider wire. The obtained parameters should not be higher than 0.7 V.

Next, you need to expand the sector to fully open the damper. Then you should recheck the voltage again. The readings must be at least 4 V. After this, you need to turn on the ignition and remove the connector. Again measure the resistance at the point of contact of the slider with one of the terminals. While scrolling the sector, monitor the multimeter readings.

The pointer should be moved gently and slowly, since shocks and sudden vibrations indicate a breakdown. The smooth operation of the device depends on the condition of the film resistor.

There are several types of throttle position sensor: film-resistive and non-contact. The first of them is installed by the manufacturer, the second is chosen by the car owner while driving and operating the car. The service life of the TPS may vary depending on the quality and adherence to technology in the manufacture of the device. The standard unit may not need to be changed even for 60,000 km, and sometimes it requires replacement even after 5,000 km.

When purchasing a throttle sensor, the price depends on the choice of its type:

Film-resistive ones are the most frequently purchased among motorists due to their budget price, but their service life practically does not stand up to criticism;
Contactless - at a higher cost (almost twice) the long period of use covers all costs. The high-quality operation of the device is due to the principle of magnetoresistance. When purchasing, you should be aware that this type of device operates at a DC voltage proportional to the throttle valve opening angle in the electric motor fuel injection system.

The sensor shaft rotates clockwise from the damper side. The service life guarantee is 3 years. Drivers do not repair the resistive sensor, but replace it with a contactless one - it is undoubtedly more reliable. Its design includes a rotor and a stator. The rotor is not affected by the magnetic field, because there is a magnet at its base. The stator is a part that is quite sensitive to the electromagnetic field. Its assembly is associated with programming, so a device of this category is often used for installation in electrical control units.

Why is it needed?

The throttle position sensor is responsible for determining the current throttle position. Depending on this, the fuel supply system changes the amount of fuel supplied under one or another operating mode of the power unit.

If problems arise with it, you can contact a service station so as not to waste your energy and nerves. But in practice, changing the TPS yourself is quite simple, plus you will save a decent amount of money.

The desired regulator is located on the side of the throttle pipe on the throttle valve axis.

Features of work

The TPS is essentially a variable resistor, one output of which is supplied with 5 Volt power. The second contact is connected to ground, and the third is connected to the controller.

When you press the gas pedal, the voltage changes. The sensor monitors the output voltage on the controller, thereby regulating and monitoring the quality of the supplied air-fuel mixture. This directly depends on the opening angle of the damper itself.

If for some reason this regulator fails, a catastrophe will not occur, since another sensor, the mass air flow sensor, will temporarily take over its functions.

This does not mean at all that the TPS can not be changed. Each regulator has its own functions, so there is no point in transferring the tasks of the TPS to the MAF.

Why did the VAZ TPS fail?

The most common cause of failure is the disappearance of the base coating at the beginning of the slider stroke. As a result of this phenomenon, a linear increase in the output signal voltage does not occur.
The second possible cause of a faulty throttle position sensor is a failed moving core. Damage to one of the tips can result in scuff marks on the substrate, after which the remaining tips fail. The contact between the resistive layer and the slider disappears.

Possible faults

The contact-type sensor is quite reliable, and according to the designers’ plans, it should last at least 50,000 km. This is ideal under average operating conditions. In practice, it often fails before reaching half of its intended lifespan. Like any mechanics, the controller is very demanding regarding various clearances, frequency and speed of movement of the slider. The situation is complicated by the difficulty of diagnosis. The main symptoms of a malfunction of the VAZ-2110 throttle sensor are very similar to damage to many other components of the car. However, symptoms of TSD damage may include the following:

deterioration of engine dynamic characteristics;
jerking during intense acceleration;
stopping the engine when changing gears;
“dips” when sharply pressing the gas pedal.

As already noted, the weak point of the TPS is the mechanical moving contact. The resistor slider, moving across the resistive layer, damages it. The thin coating simply rubs off, the contact deteriorates, making further operation of the car problematic. In addition, the moving contact itself may break. In this case, the engine almost does not respond to the gas pedal.

In any case, the TPS cannot be repaired, and there is no point in restoring it. The price of the sensor does not exceed 300 rubles. True, first of all, you need to make sure that it is he who is faulty.

The main signs of failure of the TPS

If the device is faulty, then error p0120, which was mentioned above, may appear, as well as other errors indicating that there are deviations in the operation of the sensor: P2135, P0222, P0122, P0223, P0123, P0220, P01578. The errors themselves are not displayed on the dashboard, only the “Check Engine” light comes on, they can be seen on diagnostic scanners, mobile devices or a laptop (more on this later).

As for error P2135, it is typical for modern cars with electronic remote control position control. Its full name is “Mismatch of readings from sensors No. 1 and No. 2 of the throttle position.” Occurs when there is increased resistance in the circuit of one of the wires (there are four of them). About its reasons in the next section.

Other signs of TPS malfunction:

Floating speed, at idle the car shakes violently or stalls. A sharp jump in rpm up to 2000 - 3000.
The dynamics of the car drops, especially during acceleration (dips, jerks), towing, climbing a mountain, transporting goods; as people say, the engine does not pull. This also happens due to the unstable operation of the automatic transmission, everything is interconnected. Or, conversely, when you press the gas pedal slightly, the car accelerates sharply.
Increased fuel consumption - appears immediately after the sensor malfunctions.
When shifting to a higher or lower gear, including neutral, the engine stalls.
The machine switches to emergency mode, the crankshaft rotation speed does not exceed 1500 rpm, since the damper in this mode is only slightly open by 6-7%.

The same signs indicate a malfunction of the throttle valve, the condition of which is important to periodically check and, if necessary, clean.

Causes of malfunction of contact sensors

The main reason for failure is wear of the resistive tracks, leading to a complete or partial break in the electrical circuit. This leads to the transmission of incorrect data to the ECU.

Causes of malfunction of contact sensors:

Wear of the resistor layer leads to loss of electrical contact. This can happen either at the beginning of the slider’s movement (typically when the voltage at the sensor output is low), or on another section of the tracks.
Broken or worn tip.
Wear of drive gears.
Short circuit of signal or electrical circuits.
Broken wiring, especially for VAZ cars, whose wires are not reliable.
Oxidation of contacts and contamination of connectors.

Most causes can be diagnosed visually after disassembling the device and using a multimeter.

Regarding error P2135, which was mentioned in the previous section, its causes:

poor ECU contact ground;
oxidation of contacts in the connector;
main relay malfunction;
short circuit and other reasons.

TPS problems and their diagnosis

As you know, eternal parts for cars have not yet been invented. And the breakdown of the TPS can be foreseen; for this you need to inquire about the possible reasons for the failure of this part. Here are the main ones:

Abrasion of the sprayed base layer, which serves to move the slider (the result is incorrect TPS readings).
Failure of the movable type core (the result is deterioration of the contacts between the slider and the resistive layer).

How can you figure out problems with this sensor yourself? To do this, you can independently diagnose the operation of your diagnostics:

Listen to the VAZ-2110 engine idling:
Quickly release the gas pedal:
Pick up speed:

Experts say that most often the sensor fails when the resistive track is heavily contaminated or is completely broken. To verify the opposite, you need to check the working condition of the TPS.

Test with a multimeter (preferred method)

Turn on the ignition.
Check if power is supplied to the sensor. To do this, disconnect the chip and measure the voltage readings on the wires suitable for the sensor. To do this, set the switch on the device to the “20V” position and take the readings (the norm is 4.5-5.5V). If there is no voltage, then we look for an open circuit or another reason.
We check the presence of signal voltage coming from the sensor to the computer when the damper is fully closed and open. To do this, set the “-” of the multimeter to ground (engine block or battery), and connect the “+” to the third signal contact. When the throttle is closed (the gas pedal is depressed), the voltage should not exceed 0.6-0.7V. When fully open (the accelerator is fully depressed) - at least 4V.
Next, we check for the presence of surge voltage when moving the damper between the “closed” and “fully open” positions. To do this, use an additional wire, which you insert into the Pin of the wire going to the ECU, and connect the other end to the plus of the device. Place the contactor back on the sensor. Gradually press the gas pedal or pull the cable and monitor the instrument readings. The voltage should increase and decrease smoothly. If jumps in U occur, this means that the resistor tracks have worn out in some places and the TPS must be replaced.

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You can also check the sensor by measuring its resistance. For this, a multimeter switched to the appropriate mode is also used. Readings are taken between the negative and signal contacts. For ease of work, the product can be removed.

Accurate diagnosis of element condition

When the TPS begins to function incorrectly or fails completely, the fuel supply process is disrupted during sudden acceleration of the car.

Secondary symptoms look like this:

when coasting downhill and the gear is engaged, the engine may stall and start again, causing jerking;
the engine may stall either when you sharply press the gas pedal or when you release it;
fuel consumption increases.

The listed signs are of a general nature. Therefore, a more accurate check is needed to verify that the TPS is faulty or, conversely, to exclude it from the list of parts responsible for changing the behavior of the car.

An accurate check of the element’s condition is carried out with a special device - a multimeter, equipped with needle-shaped contacts. First of all, you should make sure that the “Check Engine” sign is not lit on the dashboard, which indicates a breakdown in another place, and that the damper sensor has nothing to do with it. The further procedure is as follows:

Switch the multimeter to resistance measurement mode and, with the ignition off, detect the negative wire.
Turn on the ignition, set the switch to voltage measurement mode and check it at the output of the sensor. The value should not exceed 0.7 V.
Manually open the damper slowly. The voltage should also increase smoothly and, when fully opened, remain at a level of at least 4 V.
Turn off the ignition and connect the contacts to the input and output wires, take measurements in ohmmeter mode. Turn the valve smoothly and make sure that the chain resistance decreases without jerking.

If the voltage readings do not correspond or are absent altogether, then the main reason lies in a faulty TPS. When the voltage and resistance of the resistor “jumps” when the damper axis is turned, this indicates wear of the resistive coating. Both defects clearly lead to the replacement of the part; it is impossible to repair it.

Cleaning

So, the part has been removed. Now you need to assess the condition of the gasket. If cleaning is being done for the first time, the gasket should be replaced. Cleaning is carried out using a pre-prepared product, cotton swabs and a toothbrush. We need to clean all cavities and hidden channels. The damper itself and the landing sites need to be given special attention.

The photo shows the cleaning process using a special liquid.

As a result, the remote control must be completely cleaned of grease and dust. Before installation, it is worth cleaning the crankcase ventilation duct. Here you will need a foot pump. It is better to perform purging with the same product.

The photo clearly shows what a cleaned unit should look like.

Buying a new sensor

The car manufacturer VAZ, when assembling injection cars, installs domestically produced resistive film sensors on them, which differ only in their very short service life. The price of such a device is small - within three hundred rubles, so there is no point in repairing it. Replacing the VAZ 2110 throttle sensor, in this case, will be the best solution.

The internal structure of a proximity sensor essentially consists of a rotor and a stator. The rotor itself is made of a material that cannot be affected by a magnetic field, and a magnet is located on its base. The stator, on the contrary, is an element that ideally senses the magnetic field (the so-called Hall element). It is located at a distance from the magnet, which has a constant value, and during the assembly of the device itself is programmed in a certain way. This invention is used in the automotive industry for installation in an electronic control system. For the VAZ 2110, replacing the throttle position sensor with a non-contact version will be the best solution. Despite the fact that such devices are twice as expensive as film-resistive devices, they are much more reliable in operation and last much longer.

How to change a part?

Replacing the throttle position sensor in a VAZ of the “tenth” family and Lada Priora is quick and easy. But there is one question - what type of sensor should I choose? The fact is that new contactless elements of increased reliability and equally high cost have appeared on the market.

They do not contain a resistive film, and use the principle of magnetic induction to operate. So, if possible, it’s better to put one in your “top ten” and forget about the troubles with TPS for a long time.

The replacement operation is performed as follows:

Disconnect the battery and disconnect the sensor from the connector.
Unscrew the mounting bolts and remove the part. Don't lose your foam pad unless you have a new one.
Install the new element with gasket and connect all wires.

If diagnostics and replacement are carried out correctly, then engine operation should stabilize in all modes.

Replacing TPS

Replacing the auto sensor takes place in several stages, it is quite simple, even a novice car enthusiast can do it. First you need to turn off the ignition and disconnect the wire from the negative terminal on the battery. Then you should press the plastic latch and also disconnect the block with the existing wires from the sensor. To completely remove the device being replaced, unscrew the two bolts using a Phillips screwdriver.

Foam rubber is used as a seal between the throttle pipe and the sensor. It is a component and also needs to be replaced. When installing a purchased device, you need to carefully tighten the mounting screws until the ring is completely compressed.

After installing the sensor, you should connect the wires. Since no further adjustment is required, the work can be considered complete. The entire process of changing the device takes no more than a quarter of an hour.

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