Priora speed sensor 16 valves pinout

The speed sensor is an element of the vehicle's electronic control system.
It depends on its readings how much fuel will be supplied, how much air will bypass the throttle valve when idling, and what the speedometer readings will be. The speed sensor of a VAZ car is based on the use of the Hall effect, that is, a stream of pulses is transmitted from the device to the car's ECU, the frequency of which is proportional to the speed of the car. Auto electronics, analyzing incoming data, selects the required idle speed and sends a signal to a device that regulates the engine idle speed, which optimizes the composition of the air-droplet mixture entering the combustion chamber, bypassing the throttle valve.

During a distance of one kilometer, the speed sensor transmits over 6000 pulses to the ECU. Based on the parameters of the time analysis of inter-pulse signals, the on-board computer transmits data to the dashboard, thereby determining the speedometer readings.

As in many other cars, the VAZ speed sensor is located in the upper part of the gearbox housing, not far from the engine oil level dipstick. You can get to it from two sides: from above, by opening the hood and disconnecting the adsorber, and from below, using the inspection hole for convenience.

VAZ speed sensor pinout and DS connection diagram

The speed sensor is an element of the vehicle's electronic control system. It depends on its readings how much fuel will be supplied, how much air will bypass the throttle valve when idling, and what the speedometer readings will be.

The speed sensor of a VAZ car is based on the use of the Hall effect, that is, a stream of pulses is transmitted from the device to the car's ECU, the frequency of which is proportional to the speed of the car. Auto electronics, analyzing incoming data, selects the required idle speed and sends a signal to a device that regulates the engine idle speed, which optimizes the composition of the air-droplet mixture entering the combustion chamber, bypassing the throttle valve.

During a distance of one kilometer, the speed sensor transmits over 6000 pulses to the ECU. Based on the parameters of the time analysis of inter-pulse signals, the on-board computer transmits data to the dashboard, thereby determining the speedometer readings.

As in many other cars, the VAZ speed sensor is located in the upper part of the gearbox housing, not far from the engine oil level dipstick. You can get to it from two sides: from above, by opening the hood and disconnecting the adsorber, and from below, using the inspection hole for convenience.

Replacement instructions

If the malfunction is confirmed and the sensor needs to be replaced, the work is done according to the following algorithm:

1. Turn off the ignition, open the hood and remove the terminal from the battery.
2. Search for speed sensor. It can be located in different places, it all depends on the car model. This information can be found in the service book.
3. Cleaning from contaminants. This is necessary to avoid foreign elements getting into the transmission.
4. Removing the power connector and unscrewing the device. If you cannot disconnect the controller, you should treat the connection location with WD-40. It is not recommended to apply excessive force, as this may lead to damage to the integrity of the case. After applying the specified liquid, you need to wait some time.
5. Removing the old and installing a new sensor, connecting wires.
6. Resetting errors on the ECU (for models that have an electronic unit). If this work is not done, the light on the dashboard will light up, and the ECU will send signals about a breakdown.

Pinout DS 2109, 2110, 2112, 2114, 2115

If you understand how to connect the speed sensor, then there is the following pinout that you should follow. At the same time, it is important to understand the essence of the operation of the DS to study the circuit diagram of the sensor, which is attached to this article.

The factory speed sensor of VAZ cars is manufactured with some differences in connections to the block connector. The square-shaped connector is used in Bosh electronics systems. The circle-shaped connector is used in electronic systems such as January 4 and GM.

When connecting a sensor, you should choose devices with contact group digitization such as “-”, “A”, “+” (internal designation on the block contacts) instead of digital designations such as “1”, “2”, “3”. In addition, preference should be given to devices with a metal-type rod, since plastic rods are very short-lived.

The result of the work

Now you need to check the operation of the sensor in motion. Start the engine and drive around. Pay attention to the speedometer and odometer readings. Test the car for acceleration by pressing the accelerator pedal hard. If everything works normally, the problem has been successfully resolved.

General diagram of the electrical equipment of the VAZ 2170 Priora (sedan)

1. List of elements of the electrical connection diagram of the instrument panel harness of the LADA 2170 car: 1, 2, 3 blocks of the instrument panel harness to the front harness; 4 instrument panel harness connector to rear harness; 5 contacts of the mounting block; 6 brake light switch; 7 instrument cluster; 8 lighting control module; 9 driver airbag module; 10 horn switch; 11 diagnostic block; 12 on-board computer mode switch; 13 ignition switch; 14, 15 blocks to the electric power steering control unit; 16 electrical package controller; 17 light signaling switch; 18 windshield wiper switch; 19 gear motor for air flow distribution; 20 heater control unit; 21 heater motor switches; 22 rear window heating switch; 23 hours; 24, 25 connectors for the instrument panel harness to the radio; 26 hazard switch; 27 glove box lighting; 28 glove box lighting switch; 29 instrument panel harness connector to the ignition system harness; 30 control unit for the airbag system. * A1, A2, A3 grounding points of the instrument panel harness. B block of the mounting block. The wires in this diagram have a letter designation of color and a designation of the number of the circuit element to which this wire is connected. The number of the block contact is indicated through the fraction. Instrument panel harness 2170 3724030.

How to check the VAZ speed sensor

A failed speedometer sensor in a VAZ car is easily determined - in this case, the speedometer stops working, and it may also show some signs of life, but display incorrect information.

Using a tube, pliers or other available tools, rotate the sensor axis. In this case, you should see the voltmeter readings changing: the higher the speed, the higher the voltage (from 0.5 to 10 V). If this does not happen, the sensor requires replacement.

What are the types of DS malfunctions?

If this element malfunctions, it is difficult to determine the speed of the vehicle. Photo: avtomarket.ru

In order to promptly fix a breakdown before it develops into a more expensive repair, every owner must listen to the behavior of the car. At the slightest deviation, it is recommended to replace the DS. The main symptoms of malfunctions include:

• Incorrect speedometer readings;
• Fuel consumption increases;
• The engine does not develop full power;
• At idle, unstable operation can be observed.

In this case, each driver will see a Check engine indicator; if there is an on-board computer, error “24” is displayed.

The first thing you need to do is check the condition of the wires and contacts that could simply break. Most often this happens near the connector, where the wires bend and can fray. If the contacts have oxidized or become dirty, they need to be properly cared for. In the area of ​​the exhaust manifold, the integrity of the wire insulation is monitored. In addition, a malfunction of the DS may be associated with a failure of the speedometer cable, which has simply worn out over the years.

How can you test the DS?

Each car owner should know three possible ways to determine the serviceability of the DC; it is necessary to determine whether it produces 12 V. Since the operating principle is based on the Hall effect, the state of the contacts can only be carried out during rotation, and the voltage readings should be within 0.5 V – 10 V.

1. Check with a voltmeter. The speed sensor is removed, it is necessary to determine which terminal is responsible for what. One contact of the voltmeter is connected to the terminal that outputs pulse signals, the second is connected to the ground wire. Rotating the sensor, we look at the voltage readings. The faster it rotates, the higher the indicators should be.
2. It is not necessary to remove the DS from the car to determine its operation. To do this, you need to lift it with a jack so that the wheel does not touch the ground. Then connect the sensor contacts to a voltmeter, which will give voltage readings when the wheel rotates. If there is a frequency in Hz and voltage, we diagnose that the DS is working.
3. It is necessary to disconnect the impulse wire, which is determined by a special controller. As in the previous version, we lift the wheel to rotate it. The “Signal” wire is connected to the control; if the indicator is “-“, then the DS is working. A wire with a light bulb can replace the control in this procedure.

Troubleshooting

Faults are not always related to the part, i.e. The DS may turn out to be quite functional; only some procedures need to be carried out to restore the previous functionality. Photo: drive2.ru

Dirt, dust deposits and oil smudges may form on the DS during the operation of the car. By cleaning this device, you will ensure preventive maintenance of the product and possibly prevent future breakdowns.

The problem may be in the contacts, their fracture, abrasion, and it is necessary to replace the damaged area.

The problem may turn out to be elementary and be hidden in mechanical damage or defects in the cable, which is easier to replace. Having diagnosed the sensor, everyone is convinced that it is not working properly, then it is worth testing and eliminating the above-mentioned malfunctions.

You can learn about some features of speed sensor repair from this video:

Replacing a car speed sensor

As for its location, look for the DS in the engine compartment in close proximity to the exhaust manifold. To be honest, the place where it is installed cannot be called ideal. While the car is running, the manifold heats up. The sensor wires rub against it, which over time leads to malfunctions and short circuits. Therefore, experts recommend that the first step is to properly insulate the wiring, and also use some kind of clamps so that the wires do not come into contact with the collector. This significantly extends its service life.

If the check shows that the DS is faulty, it needs to be replaced. Repairing sensors and similar small electronic devices is a thankless task. In a garage environment, this is unlikely to be possible, and the only thing that can be done is to clean the contacts from oxidation (this can be a problem).

It doesn’t matter whether you have an injection car or a carburetor with a Europanel - the connection of the speed sensor to the instrument cluster is identical.

Replacing the VAZ speed sensor: step-by-step instructions:

1. Drive into the pit - it will be more convenient to work from below - and wait until the engine cools down.
2. Turn off the vehicle's power by removing the cable from the negative terminal of the battery. Do not close the hood after this, this will provide you with lighting.
3. Locate the speed sensor on the transmission. Clean it and everything near it with a rag to remove any dirt.
4. By pressing the spring clip, disconnect the wire block from the sensor.
5. Dismantle the sensor itself by unscrewing it counterclockwise - with your fingers or an open-end wrench to “22”.
6. Carefully, so as not to break anything, install a new part in place of the removed part. Connect the wire block to it and the procedure for replacing the speed sensor can be considered complete.

How to properly connect a new DS? It is important here that the device rod fits correctly into the fixing sleeve, otherwise rotation will not be transmitted to the sensor. If the sensor fits into the socket the first time, then everything is in its place, and if something prevents it from moving, then the rod did not fit into the bushing.

Replacement

Prepare a ratchet handle, a set of screwdrivers and a 10mm socket wrench. The Lada Priora should be on a flat surface; we begin work by disconnecting the negative terminal of the battery.

The replacement takes place according to the following scheme:

For convenience, we dismantle the injection pipe coming from the air filter. To do this, you need to unscrew the bolts located on each side of the pipe. Then we remove the fastening of the thin hose and remove the pipe;

Now you need to check the operation of the speed sensor in motion. Start the engine and drive for a few meters, while studying the data on the odometer and speedometer. If the devices produce real indicators, then the problem has been resolved.

The vehicle speed sensor (VS) is installed on the gearbox and is designed to transmit pulse signals to the controller (electronic control unit) to display the speed on the speedometer. The process of removing and installing the speed sensor on Lada Kalina, Lada Priora and Lada Granta cars is carried out in a similar way.

You will need: a 6" wrench and a Phillips screwdriver.

Interchangeability of sensors : there are several types of DSA, which differ in catalog numbers. Sensors 1118-3843010 and 2170-3843010 are not interchangeable. To be completely sure, you should buy a DSA with the same markings as the old sensor.

Procedure:

1. Unscrew the screw on the corrugation clamp.
2. Move the air filter bellows to the side.
3. Release the connector fastener and move the block with wires to the side.
4. Unscrew the nut and remove the speed sensor.

Installation is carried out in the reverse order, after first cleaning the connector from dirt. The replacement process is also shown in the video:

Let us remind you that most often the speed sensor is replaced when the speedometer does not work.

Priora speed sensor 16 valves pinout

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1 brown, 2 gray, 3 pink with black stripe

I don’t have a Priora, but in all schemes, including e-gas, it’s the other way around: 1 - pink (+12V) 2 - gray (signal) 3 - brown (ground)

Change pink with brown, you have confused the sensor's power supply with ground. How can you randomly connect wires in the engine control system on a new car? Do you want to kill the ECU?

I don’t have a Priora, but in all schemes, including e-gas, it’s the other way around: 1 - pink (+12V) 2 - gray (signal) 3 - brown (ground)

Change pink with brown, you have confused the sensor's power supply with ground. How can you randomly connect wires in the engine control system on a new car? Do you want to kill the ECU?

IMHO Genady you are wrong, but thanks for your participation. Today I reviewed the diagram again, I assembled everything correctly. Why didn't it work? I guess I just didn't tighten something up. I would also like to note that mainly sensors 2170-3843010-04 are available for sale. I have 2170-3843010-02 and it turned out to be very difficult to find one in the rather large Chelyabinsk. which 04 stupidly does not reach the end 3-4mm, it is a little thicker and has a slightly different shape. It’s hard to say why they did such crap at VAZ, but I didn’t think that I would experience problems with the spare part with the Priora.

Why is the old guy fucked up, he ordered me to live long.

No, it works, but every trip it cuts out for 5-10 minutes, this is very annoying, because... The EUR is cut off, the engine becomes very jerky without any speed readings, you drive in some jerks. Apparently water gets into the sensor through the gap and the board in it oxidizes. On the new one, I covered this gap with super glue. This is the kind of laboratory work I did, although I could have just rolled it out under warranty

Source

Which speed sensor to buy on Priora: types of products

Priora is equipped with three types of speed sensors from the factory. This is important to consider before purchasing a new product. To avoid mistakes, you should first remove the product and, having copied the serial number (you can take a photo), buy a similar option. This approach will ensure that you do not make a mistake with your purchase and buy the right type of sensor.

The second note when buying a DSA for Priora is to choose only original products. Chinese devices may cost 100-200 rubles cheaper, but they may not only not be suitable for installation, as evidenced by the photo below, but also not work correctly (or not work at all).

If you bought a DS, but during installation it fits tightly into the hole, it means that the product was chosen incorrectly. Compare the diameters of the standard and new products, and only then install the part.

In order not to make a mistake with your choice and buy an original DSA for Priora, you should pay attention to the presence of the serial number:

• 2170-3843010-04;

• 2170-3843010-02;

• 2170-3843010.

The main difference between them is in the calibration (the type of signal perceived by the controller) and the shape of the working part where the semiconductor element is located. Choose the products correctly, as the correctness of their operation depends on this.

Priora speed sensor pinout

The difficulty was that it was not possible to remove the contacts from the chip right away (I couldn’t find any information on such a petty procedure on the Internet, there was one post where a man couldn’t remove it and sawed it off! The connector) he tore off one wire and, without torturing the remaining ones, cut off the entire connector. In general, the essence of the message, the internal appearance of the connector is misleading and at first glance it seems that the antenna that holds the contact alone is a lie! there are two of them!

To remove the contacts you will need an awl, in my case half a honey. tweezers, another difficulty is that the mustache is springy, that is, we pull the wire and press the mustache, but pull it moderately so as not to press the mustache into the plastic of the connector. Regarding the silicone inserts, they create resistance, but the moment when the contact is released is basically noticeable. If you are reading this article after you have already torn off the wire)), then it will be easier to remove it by pressing with a small flat screwdriver across the contact plates, in this case there will be room for the awl to press the mustache, but you will have to suffer.

Now recovery. The contact for restoration is very inconvenient; in the place where the wire is crimped, it has greater strength, so I don’t recommend trying to open it and insert a new wire. The maximum that I could do, without causing much damage, to remove the remnants of the wire, was to open the crimping area with a small clock screwdriver, hitting it with a hammer, but the contact must be placed on a convex surface.

Connected by soldering. If you follow my path, then get ready for inconvenience; soldering contacts to wires will be inconvenient. We put silicone plugs on the wires, strip the wires to a length of 3-4 mm, tin (I use Zil-2 flux, a 100 W soldering iron) and move the plug to the edge of the wire so that about 1 mm of its insulation is visible. We insert the wire into the contact using rotational movements. Having aligned it at the junction, apply acid. We solder carefully so that the tin does not flow into the contact and solder its insides; it will be almost impossible to remove the tin and the functionality of the contact will be lost. In the photo: the top contact is soldered, the middle contact is prepared for soldering, the bottom wire is tinned.

That's it, after soldering we go through with a dry brush to remove any remaining acid (not necessary, since during soldering it all basically boils away), spread the mustache a little, remove dirt from the connector and insert the contacts into place, pushing the contacts from the side of the silicone plug, resting against it with a screwdriver until you hear a characteristic click.

Control Features

Control is carried out through a lever and a knob for switching between speeds - a rocker with a cover. To prevent accidental engagement and disengagement of gears while driving, a reaction-type traction rod is integrated into the mechanism. At one end it is connected to the engine, and at the other to the base of the switch lever. Some drivers install a short-throw rocker as an upgrade for greater sensitivity. On one side of the rod, a switch is fixed inside, which affects the mechanism; it is a separate unit and is attached to the pallet. There are three axes fixed in the device casing:

1. The first is used to secure the speed selection and switching switch, as well as two locking brackets.
2. The second goes through the slots in the brackets and prevents them from turning.
3. The third secures the reverse gear fork.

Pinout DS 2109, 2110, 2112, 2114, 2115

If you understand how to connect the speed sensor, then there is the following pinout that you should follow. At the same time, it is important to understand the essence of the operation of the DS to study the circuit diagram of the sensor, which is attached to this article.

The factory speed sensor of VAZ cars is manufactured with some differences in connections to the block connector. The square-shaped connector is used in Bosh electronics systems. The circle-shaped connector is used in electronic systems such as January 4 and GM.

When connecting a sensor, you should choose devices with contact group digitization such as “-”, “A”, “+” (internal designation on the block contacts) instead of digital designations such as “1”, “2”, “3”. In addition, preference should be given to devices with a metal-type rod, since plastic rods are very short-lived.

Diagram and pinout of DS Priora

Three wires are connected to the DS Priora plug. One of them is positive 12V, the second or central one is the signal wire that supplies impulses to the control unit, and the third is ground.

The speed sensor power supply circuit is shown in the photo below.

The DS pinout diagram on a Priora may be needed when replacing a plug or checking the incoming power.

How to check the VAZ speed sensor

A failed speedometer sensor in a VAZ car is easily determined - in this case, the speedometer stops working, and it may also show some signs of life, but display incorrect information.

Using a tube, pliers or other available tools, rotate the sensor axis. In this case, you should see the voltmeter readings changing: the higher the speed, the higher the voltage (from 0.5 to 10 V). If this does not happen, the sensor requires replacement.

Sensor selection

You need to purchase a new speed sensor to avoid problems. Visually, the sensor intended for the Priora is almost no different from the Kalina element, and many sellers claim that one model can easily be replaced by another model. Sensors that look similar have completely different fillings, and after installing an inappropriate element, frequent malfunctions in the operation of the ECU and incorrect readings on the speedometer will occur. Therefore, before purchasing, you need to carefully study the old part, rewrite the catalog number and purchase exactly the same model.

Symptoms of a faulty speed sensor

If your car has at least one of the following reasons during operation, this will be one hundred percent reason to check it.

• Unstable operation at idle.
• Fuel consumption has increased.
• The engine does not “pull” or is no longer as responsive as before.
• The speedometer does not work or there are errors in the operation.
• The electric power steering is turned off.

If an on-board computer is installed on the car, then errors coming from the speed sensor will also be a reason for checking.

Causes of malfunction

The most common cause of speed sensor failure is faulty wiring. It is highly exposed to external weather conditions, oxidizes and rusts. Thus, only an external examination will give the correct answer.

One of the sensor contacts has fallen off due to corrosion.

After the wiring and sensor are inspected, we proceed to dismantle it. How to properly carry out this operation is written in this article.

Signs and causes of malfunction

Symptoms indicating the need to check the speed sensor have already been indicated above. The main signs of a malfunction are the absence of readings on the speedometer, increased “gluttony” of the engine, malfunction of the engine at idle, deterioration in dynamics, etc.

A breakdown of the sensor may be indicated by engine stopping while driving, failure of the electric power steering wheel, or increased sensitivity of the FLS (for example, for Lada Kalina).

Common causes of sensor failure:

• violation of the integrity of contacts;
• oxidation at joints;
• open circuit;
• insulation melting;
• wear of the speedometer cable, etc.;
• strong vibration of the device;
• dirt ingress;
• temperature changes;
• Other reasons.

If you ignore problems, engine malfunctions occur and wear on its elements increases.

As a rule, the cause of problems is dirty contacts, which should be cleaned and treated with Lithol.

If there is a break in the electrical circuit, the damage should be looked for near the connection connector. This is where the wires are most susceptible to bending and breaking. Sometimes the insulation becomes damaged where the exhaust manifold is mounted.

When exposed to high temperatures, the insulation can be damaged, which leads to short-circuiting of the wires.

With prolonged use, the speedometer cable wears out, which eventually develops cracks and breaks, which leads to failure of the controller.

An equally common cause of speed sensor failure is a broken circuit, so before replacing the device you need to make sure it is working properly.

To begin with, you should discard the power supply and examine the contacts from the point of view of contamination. After cleaning, the surface is treated with Litol lubricant.

During the test, measure the resistance in the grounding circuit; it should be equal to one Ohm.

When analyzing a fault, consider the following:

1. If the controller is working properly and the gear is intact, it is possible that the device is not receiving power or there is a short circuit in the network.
2. The readings on the dashboard involve the ECU and ABS, so you need to check the integrity of the wire running from the speedometer to the unit. It happens that the dashboard itself fails.
3. On cable-driven machines, the cause of the malfunction is often hidden in old oil on the gear or a worn square at the end of the cable.

Before replacing the sensor, make sure what is causing the problem. The algorithm of actions is as follows:

• take the cable out of the box, twist it and look at the speedometer’s reaction;
• check the electrical part of the speed indicator;
• if there is no voltage, you need to make sure the fuses are intact;
• remove the speed sensor, install the cable in the KPI and drive a short distance (if there is no data on the speedometer, we can talk about a breakdown of the DS).

Finding out the cause of the malfunction requires an integrated approach, as does checking the sensor (discussed below).

Also read about signs of a malfunctioning mass air flow sensor.

Replacing a car speed sensor

As for its location, look for the DS in the engine compartment in close proximity to the exhaust manifold. To be honest, the place where it is installed cannot be called ideal. While the car is running, the manifold heats up. The sensor wires rub against it, which over time leads to malfunctions and short circuits. Therefore, experts recommend that the first step is to properly insulate the wiring, and also use some kind of clamps so that the wires do not come into contact with the collector. This significantly extends its service life.

If the check shows that the DS is faulty, it needs to be replaced. Repairing sensors and similar small electronic devices is a thankless task. In a garage environment, this is unlikely to be possible, and the only thing that can be done is to clean the contacts from oxidation (this can be a problem).

It doesn’t matter whether you have an injection car or a carburetor with a Europanel - the connection of the speed sensor to the instrument cluster is identical.

Reasons for failure of the speed sensor on a Priora

As mentioned above, on a Priora the speed sensor is a pain. Moreover, its malfunctions do not appear after 100 thousand kilometers, but literally from the first days of operation of the new car. The reason for this is various factors:

1. Oxidation of contacts - this phenomenon occurs due to a violation of the seal of the plug.

2. Liquids getting inside - and although the sensor’s power supply chip (plug) is sealed, the possibility of oil and other aggressive substances (antifreeze, water) getting inside the connection cannot be ruled out.

3. Damage to contacts - oxidized contacts simply fall off over time, breaking the electrical connection. Moreover, this happens even if the chip was not disconnected from the sensor.
4. Violation of the integrity of the plastic housing - if the sensor housing is damaged, the product will not function.
5. Damage to power cords. On Prioras, this phenomenon is very common, and if you determine that the sensor is working, then you should check the quality of the wires in the area where they enter the chip.

6. The presence of dirt on the sensor body, which is a common cause of interruptions in the speed indicator. Small metal particles act as contaminants (production of gearbox gears). The particles are magnetized to the DS body.

Although the speed sensor on the Priora is relatively inexpensive (500-800 rubles), you should not rush to buy a new element. After all, the reason can only be contamination of this device or damage to the supply wires. That is why you first need to identify the cause of the breakdown, and only after that resort to eliminating it.

Speed ​​sensor Lada Kalina

I encountered the following problem - the speed sensor on Kalina quickly failed. More specifically, in about a year and a half I replaced 3 speed sensors. Moreover, the latter did not work even a day. This arrangement of events did not suit me and, to be honest, I was a little fed up. I decided to figure out the reason for such a quick “demise” of the sensors.

A speed sensor can break down mainly for 3 reasons - the first, and most common, is liquid (water or antifreeze) getting on the sensor contacts. This occurs due to leaking pipes or driving through a large puddle. The second reason is transmission oil getting inside the sensor. This is due to the design features of the sensor itself. And third, the speed sensor chip may begin to melt; no one knows for sure why this happens.

The first time my speed sensor failed was due to antifreeze getting on it. I fixed the leak (the pipes leading to the stove were leaking, just above the sensor) and replaced the sensor. The second time the speedometer stopped showing after a trip in rainy weather, although it didn’t seem to drive through puddles. The third time I didn’t understand at all why it stopped working, perhaps the microcircuit itself burned out, but this is no longer so important.

Checking the induction DS

The signal that comes from the rotation of the wheels essentially resembles the oscillation of a wave impulse. Therefore, the voltage changes depending on the rotation speed. Everything happens in the same way as with the crankshaft angle sensor.

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If the sensor is working properly and the gear is not leaking, then there may be no power to the sensor or there is a break/short somewhere in its wiring. In addition, the ECU and ABS are involved in the readings on the tidy. The wire from the ECU to the instrument panel or from the ABS may have been lost (you should call the wire from the speedometer to the ABS block). It is possible that the device is faulty.

Good day everyone, I have such a problem that the speedometer and odometer do not work. My car is a Hyundai Santa Fe 2 2007. I checked the speed sensor drive gear, everything is ok, I don’t know how to ring or check the sensor itself. The workers checked the inductive sensors on the box by eliminating everything, the check light came on, I don’t know what else could be the reason, since you drive with a scanner, the speed shows “0” on the speedometer, maybe someone has someone who can tell me.

Guys, good afternoon everyone! Please tell me! I have a Lada 14 and just recently the speed began to fluctuate, it almost stalls, it does not work evenly. Diagnostics showed a camshaft sensor, they replaced the sensor with a new one, but there was no result. By the way, the speedometer and tachometer do not work. What could be the reason?

Thank you, detailed article!
And it will be even more clear how to check the speed sensor if you watch the video of the HF channel: https://youtu.be/qiDmZLUuTMI

Types of speed sensors, their differences. Where is the speed sensor located?

Electronic 6-pulse sensors are equipped with cars with injection engines, launched into series since 2006.

On carburetor Samaras you can sometimes find 10-pulse EMF.

Until 2006, VAZ cars used mechanical devices in the form of special inserts between the speed indicator cables and the gearbox gear outputs.

The key difference between different types of EMF is the absence of wires and connecting connectors. For example, GM or Yantar systems are equipped with products with round (oval) ports. At the same time, Bosh uses wireless versions with square connectors.

• On the VAZ-2110 (2111, 2112), speed sensors are mounted on the gearbox housings slightly to the right along the route, directly next to the oil control dipstick.
• The device is easy to find by looking in the area of ​​the right CV joint.
• On the VAZ-2115, the electronic device is mounted on top of the front part of the gearbox (along the way) directly above the differential. The product with the connected cable is secured with one bolt on the box body.

Replacement at a car service

For dismantling and installing a diesel engine at a service station, you will be charged from 200 to 300 rubles. The cost of the device itself in a spare parts store ranges from 300 to 400 rubles, depending on the manufacturer. When purchasing, pay attention to the article number.

Article number of standard DSA Lada Priora: 21700-3843010-02

Speed ​​sensor part number

There is nothing complicated in the process of replacing the DSA; the work from start to finish will not take even 20 minutes. All work on changing the DS can be carried out independently, without overpaying an extra amount.

Speed ​​sensor malfunctions

Typical symptoms of failure of the electronic speed sensor may be:

There can also be several reasons for problems with the Electronic Speed ​​Sensor, for example:

• power supply circuit break,
• oxidation of contacts,
• breakage of connecting wires or wear of the mechanical drive of the sensor.

When to replace?

Replacement must be made only when the above-described malfunctions occur, but before starting work, you must check the sensor itself for contamination and integrity.

The check should begin with the connector. You need to remove the chip from the sensor and check it for contamination and integrity of the contacts, both on the chip itself and on the sensor. All contacts must be clean and intact without traces of oil, dirt or rust.

DSA with broken and dirty contacts

If, upon inspection of the connector, the problems described above are discovered, it must be replaced. Connectors are sold in auto parts stores for domestic cars.

DSA connector

Next, you need to remove the sensor itself; to do this, use a ratchet and a 10-point socket, unscrew the nut and remove the sensor. The plastic housing of the sensor should be free of cracks, chips, dents and metal shavings. If necessary, we clean it and install it in place.

Metal shavings interfering with the operation of the diesel engine

Quite often it happens that chips formed during the friction of gears in the gearbox stick to the DS and it, in turn, begins to display incorrect readings.

If all these manipulations with the DSA did not help, then it needs to be replaced.

Description of the speed sensor

Some car enthusiasts confuse the speedometer sensor with the reverse speed sensor, but this is incorrect. Where is the speed sensor located on Lada Kalina 8 or 16 valves, what is the pinout of the connector, how to check the device? First, let's look at the main theoretical points.

Location, purpose and device

The speed controller in the Lada Kalina car is a device made in a plastic case in the form of a cylinder. Inside the body there is a sensitive component that determines the speed of movement. As you can understand, the main purpose of the device is to accurately determine the speed limit.

What is the effect of a DS malfunction on a Priora?

All Priora car owners are familiar with the situation when the speedometer begins to act up. The arrow either shows the wrong speed value, freezes at some position or shows no signs of life at all. The reasons for this behavior are often related to the speed sensor. Such a device affects not only the operation of the speedometer, but also the engine.

If the speed sensor on the Priora is faulty, the engine will function, but the possibility of it going into emergency mode is possible when the fuel-air mixture is prepared at average values. Even on a Priora with electric power steering, if the speed sensor malfunctions, the power will not work (or work intermittently).

This is interesting! The speed sensor on Priora is a problem for all cars of this brand. And therefore, when faced with the first signs of a malfunction, you should resort to eliminating them.

Let's immediately look at how the speed sensor affects engine operation. When the vehicle speed increases, the ECU understands that frequent fuel supply through the injectors is required. Naturally, the rapid movement of the car is also recorded by the level of throttle opening, for which the throttle position sensor is responsible.

If the car is coasting (downhill), then approximately the following picture occurs:

• the speed of the car increases, as evidenced by the DS readings;
• however, intensive fuel supply to the manifold is not necessary, since the ECU records the closed position of the throttle valve;
• Thus, the ECU understands that the car is coasting, which means that fuel consumption at such a moment is minimal.

In modern cars, DS play a very important role, and if you could drive a carburetor car with a broken cable as much as you like, then on injection cars, where the DS is presented in the form of an electrical element, such a breakdown will entail an increase in fuel consumption, as well as interrupted operation of the engine . That is why it is very important, if such a malfunction occurs, to eliminate it as quickly as possible.