As you know, repairing the VAZ crankshaft sensor, the replacement of which will be discussed in this article, is a complicated procedure. But you can do it yourself if you know some secrets.
On the VAZ 2110, the replacement of the crankshaft sensor is carried out without disassembling the especially important and irreplaceable components of the car.

Why is it needed

This sensor is installed on the cover, right next to the generator drive pulley. This device is intended in order to synchronize the operation of the controller with the upper dead center pistons of cylinders (1st and 4th) and the angular position of the crankshaft.
So:

• The sensor itself is an electromagnetic device that synchronizes the work in the injection system. This sensor also monitors the operation fuel injectors and ignition systems.
  In short, this device is a complex device.
• It is impossible to imagine without this sensor good work fuel injection systems. When the sensor fails, it necessarily affects various important parts of the car, which ultimately leads to engine failures.
  Therefore, it is very important to check the condition of this sensor. This check becomes especially important before a long journey.
• As mentioned above, the crankshaft position sensor is located directly next to the drive pulley. At least on all VAZ models.
  This device is installed so that a small gap remains between the toothed pulley and it, the value of which should not exceed one millimeter. The gap can be set thanks to special washers of the required size.

As for the toothed pulley, it is made in the form of a special disk. The disc belongs to the generator drive and performs an essential function.
This very toothed pulley can be made with a rubber spacer or with an all-metal component. Always make sure that there is no dirt and foreign particles between the teeth, as damage to this pulley can lead to undesirable consequences.

Sensor malfunctions

The following symptoms may indicate a malfunction of the crankshaft sensor:

• engine operation stops unexpectedly;
• the engine runs unstable during idle;
• noticeable missing sparks;
• engine power is noticeably reduced, especially on hills;
• engine speed spontaneously increases or decreases;
• detonation is noticeable at various dynamic loads;
• difficulties with starting the engine and much more.

All of the above examples, taken separately or together, indicate that it is time to change the sensor. To fully make sure that you definitely need to replace the crankshaft sensor with a VAZ 2110 or other models, you need to test.

Sensor performance test

There are several ways to check the sensor. Each of the methods assumes the presence of certain devices.
Let's look at two main methods of verification that give accurate results.

After removing the sensor, and how to do this will be described in detail below, you need to carefully inspect it. A visual inspection will help determine the condition of the core, terminal block and the contacts themselves.
If traces of dirt are noticeable on the sensor, which prevent a normal inspection, they should be removed with a cloth soaked in alcohol or gasoline. Also, contacts should always be clean.
In addition, when disassembling, pay particular attention to the distance between the sensor core and the disc. If it is not close to 0.6-1.5 mm, then the sensor is most likely defective.
If everything is normal, this does not mean that the sensor is working.
Only an ohmmeter will allow you to determine the presence of obvious malfunctions in the crankshaft sensor. Measure the resistance of the synchronization sensor winding with this device.
The normal value displayed with an ohmmeter should be 550-750 ohms.
In order not to doubt, it is recommended to clarify in advance the exact parameters in the vehicle operating instructions, which may vary depending on the manufacturer. If the value given by measuring the ohmmeter differs from those indicated, then there is a problem with the sensor.

Another test option involves more extensive testing.
To carry it out, you will need the following tools:

• voltmeter;
• inductance meter;
• megohmmeter;
• network transformer.

When measuring in this way, the air temperature should be equal to 20-22 degrees. As for the resistance of the winding, then it is measured by the method described above.
So:

• To determine the inductance of the winding of the crankshaft speed sensor, you will need to use an inductance meter. It will show how the inductive coil works, capacitance and resistance.
  The normal inductance value should be 200-400 MHz.
• The insulation resistance is already checked using a megohmmeter. At a voltage of 500 V, this indicator should not exceed 20 MΩ.

Note. If suddenly in the process of repairing the crankshaft sensor an inadvertent magnetization of the synchronization disk occurs, you will have to use a network transformer for testing.

Based on the results that the devices give, you can find out exactly whether the sensor is working or not.

Sensor replacement and installation

Let's start replacing the sensor:

• first of all, disconnect the terminals from the battery;
• then we disconnect the block with wires from the sensor;

• we arm ourselves with a key the right size and unscrew the bolt securing the sensor;
• remove the sensor from the oil pump.

Note. When dismantling, do not forget about the distance between the disc and the core, which should always be checked. It is also recommended to add checkmarks so that installation is straightforward.

• we take a new sensor;
• we put it on the cover of the oil pump;

• carefully tighten the sensor (the clamping torque should be 8-12 Nm);
• we connect the wires.

Everything about the crankshaft position sensor

As mentioned above, replacing the sensor crankshaft on the vaz 2110 is not done just like that.
If this small and seemingly nondescript-looking device is not the main part or unit of the car, its malfunction leads to several problems. Let's consider them.

Let's get started:

• The first case implies such an option when dirt from or oil from under the engine cover gets on the sensor. In this case, the sensor fails, and the car does not start well, accelerates very sluggishly and the engine speed barely reaches 3000.
  The car system announced this by the fact that the emergency gang turned off completely, and the BC did not immediately, but after a certain time, give a signal that an urgent replacement of the VAZ 2110 crankshaft position sensor was required;

Note. It was said above that when the sensor does not work, the engine either starts with difficulty, or does not start at all.
If the sensor fails in the direction of travel vehicle, the car will continue to move, but when the engine stops, it will not be possible to start it again. It turns out that if the engine is functioning normally, then everything is in order with the sensor.

• The car runs fine, but on-board computer constantly sends signals that there is a problem with the sensor. What to do in this case? You can try to move the wires, as the reason may be hidden in poor connections.
  The car constantly shakes while driving, and the contacts may oxidize over time. In addition, all wiring can be damaged.
• The car started normally, but then stalled, and it is impossible to start it again. After a certain time, the engine starts again normally, but stalls again.
  And in this case, the reason may be in the wiring. In many cases, the wire going to the sensor burns out as it comes into contact with the hot exhaust manifold.

This video will help you self-replacement sensor is correct. In addition, it is recommended to use photo instructions and other information carriers during the replacement process.
As it becomes clear from this article, you can do a lot of things with your own hands on your car. The main thing is the instruction to be followed, and the rest will follow.
The only thing left to do is to do the following, if problems are found: buy a new sensor, the price of which is not too high, and start replacing it.

It is difficult to overestimate the value of the VAZ-2110 crankshaft sensor for the engine. It is with its help that the engine speed is monitored. Stable operation is possible only under the condition of normal functioning of this device and control system. Many sensors send signals to the central unit, which processes the data and, using actuators, regulates the timing of ignition and the supply of the mixture to the combustion chambers. But if a breakdown occurs, the engine will stop working in normal mode - the spark will disappear, fuel will not be supplied to the combustion chambers. And it will be impossible to start the engine either hot or cold.

The principle of operation of the crankshaft sensor

From a sensor installed opposite the crankshaft, a signal goes to the electronic control unit. But there is one peculiarity - there are 58 teeth on the pulley. And there is a small gap - it is equal to the distance between the two teeth. It is with this gap that the sensor recognizes the position.

It looks like this:

1. When the crankshaft rotates, the sensor reads the number of teeth - exactly 58 pulses should be with an equal gap between adjacent ones.
2. All these data are transmitted via the wire of the VAZ-2110 crankshaft sensor to the electronic control unit.
3. Then the sensor enters the gap without teeth on the pulley and the ECU monitors this condition.
4. With the help of a gap without teeth, the number of revolutions of the motor is read.
5. Due to the presence of teeth located at an equal distance from each other, the electronic microcontroller unit understands the position of the crankshaft.

If you need to replace the device, be sure to install the same one as before. Otherwise, the motor may malfunction or it will not work at all.

How to identify a breakdown?

You only need a screwdriver and a multimeter to test the device's functionality.

The main symptoms of DPKV breakdown include:

1. Unstable engine operation on idle, full stop.
2. Reduced power and traction.
3. The number of revolutions of the crankshaft is constantly jumping.
4. Detonation is possible - shots are heard in the intake and exhaust manifolds.
5. Engine start is problematic or impossible.
6. Engine tidy.

If there is one of the symptoms, then this directly indicates that it is necessary to replace the VAZ-2110 crankshaft sensor.

How do I remove the device?

The sensor is located on the side of the generator drive, opposite the crankshaft pulley. You can find it by looking at the back of the engine, at the oil pump. Before removing the device, make marks - this will allow you to install the new one in the correct position. Therefore, the engine will not malfunction after repairs.

To dismantle, you need a key for 10. The order of work is as follows:

1. Disconnect the block with the wires that connected the device to the engine control system.
2. After making the marks, unscrew the nut from the sensor body.
3. Remove device for inspection or replacement.

But maybe the sensor is working fine, so you need to check it. Before removing the DPKV, measure the distance from its edge to the pulley - it should be in the range of 0.6-1.5 mm. If more than the maximum value, then adjust and try to start the motor.

Diagnostics with an ohmmeter

The very first thing that can be done is to measure the resistance of the sensor winding. According to the standards adopted by the manufacturer, a value of 550-750 ohms is normal. It is quite acceptable if it differs by 50-100 ohms from these values. But if the resistance is too large or absent (open circuit), be sure to replace the VAZ-2110 crankshaft sensor. But breakdown happens extremely rarely - much more often dirt and dust accumulate on its active part, or the case is exposed to mechanical stress. Try to clean the device more often and not subject it to shock.

Replacement features

Now you know the VAZ-2110 crankshaft, and if it is broken, you need to replace it.

Pay attention to a few nuances that must be taken into account:

1. Try to purchase quality products that are recommended by the manufacturer.
2. Be sure to tag for easy device replacement.
3. The distance from the edge of the tooth to the working surface of the VAZ-2110 crankshaft sensor must be within the acceptable range.
4. The tightening torque for threaded connections is 8-12 N * m.
5. Before installing a new sensor, measure the resistance.

Timely cleaning of the active surface of the device will ensure it normal work for a long time. However, you cannot use harsh methods - use a soft rag or an old toothbrush (the most suitable tool for this job). The use of metal brushes or sandpaper is unacceptable. To better remove dirt from the surface, apply a small amount of WD-40 type. Then wipe the DPKV dry and try to start the engine.

Today we will talk about the engine crankshaft position sensor, where it is located, the signs of its malfunctions, how to check it on various cars using instruments.

How it works

Modern car equipped with a significant number of various sensors, the main task of which is to control the operation of mechanisms or systems.

Data from these sensors is transmitted to the electronic unit management, which, on the basis of the information received, adjusts the work of certain systems.

One of the most important of these control elements is the crankshaft position sensor (DPKV, TDC sensor).

This sensor monitors the engine speed.

Based on its readings, the control unit adjusts the operation of the fuel system and.

If it is simpler, then according to the DPKV readings, the control unit is guided by how much fuel to supply to the cylinders and when to do it, as well as at what point to spark.

Therefore, perhaps, this is the only sensor, due to a malfunction of which the power plant may not start, because a failure in its operation will lead to a malfunction of the fuel system.

Even if the power plant starts up, its operation will be unstable, intermittent, etc. Therefore, this crankshaft sensor is very important and you need to monitor its performance.

Location of DPKV - design features

Typically, this sensor is located near the alternator belt drive pulley. On this pulley, a ring gear is usually made around the circumference, the so-called synchronization disk. It is to the rotation of this disk that the sensor reacts.

It is worth noting that in order to accurately obtain data on the rotation of the crankshaft, the DKPV is located at a certain distance from the disk.

For a properly installed device, the distance between its core and the top of any tooth should be 0.6-1.5 mm.

The location of the DKPV is not the most convenient, but it is quite possible to get to it.

On cars, several DPKVs, different in design and principle of operation, are used:

• induction (one of the most common);
• hall effect sensor;
• Optic.

We will not talk about the design and operation features of each of them, we will go straight to the faults.

Malfunction symptoms

A malfunction of this device will manifest itself immediately. Symptoms of a faulty DKPV are:

• Inability to launch power plant;
• Falling car dynamics while driving;
• Floating speed in different driving modes;
• Interruptions in work, instability of idle speed;

It should be noted that since this sensor is very important for the functioning of the power plant, then if it fails, the electronic unit will signal this by lighting up " Check Engine ».

Of course, the reason for the appearance of this inscription or icon on dashboard there may be a malfunction in some other system, however, in combination with the indicated symptoms, one can immediately assume that it is the DKPV that is to blame for all the troubles with the car.

Verification methods

Before going to a car shop for a new sensor, it is still recommended to first check the one that is installed on the car.

So it will be much faster to determine why the car does not work well, because it is possible that the sensor is not at all to blame for everything, especially since some verification methods are not so complicated.

The most common are:

• check for resistance of the sensor coil;
• complex check (coil and insulation resistance, winding inductance);
• oscilloscope check.

The first two checks are quite simple, you can perform them completely yourself, having the necessary instruments.

The third method is the most accurate, but it can be checked only at specialized stations.

Check for VAZ 2110

Ohmmeter (multimeter).

To make it clearer, consider each method for checking the crankshaft sensor using the example of several cars.

The first will be the VAZ-2110, which uses an induction type of device.

So, the engine on the "Ten" has gone bad and there is every suggestion that this happened due to the crankshaft sensor. There is a multimeter at hand that can work in ohmmeter mode.

This is enough to check the winding resistance.

The first thing to do is to inspect the device while it is installed on the car, or rather, to check for a gap between it and the synchronization disk.

It is possible that there is no gap there due to the fact that dirt adhered to the sensor or disk, which led to a malfunction.

If everything is in order with the gap, we dismantle the device from the car before.

On the VAZ 2110, it is located on the cover of the oil pump.

Before that, it is better to mark the position of the DPKV.

The next stage is an assessment of the external condition. The sensor body must be intact, without any signs of damage, the core must be clean, and the contact leads must be free of oxidation, and the wires must not be damaged.

If external contamination is visible on the DPKV, then you can rinse it before checking (for this, use only pure gasoline or alcohol), and also clean the contacts with a file.

After cleaning, rinsing and drying, you can start measuring. To do this, we transfer the multimeter to the ohmmeter mode and use the probes to connect to the sensor contacts.

When measuring, a serviceable DPKV should show a resistance in the range of 550-570 Ohm.

For other cars, this indicator may be different, so it is better to ask about the nominal voltage of the sensor in the technical documentation of the car before measuring.

If the resistance value is below or above the specified range, the sensor is faulty and must be replaced.

This is the easiest way to check DPKV, but it is also the most inaccurate. He can only give a partial idea of \u200b\u200bthe state of the device, although this is sometimes quite enough.

Oscilloscope.

The most accurate way to check is the way in which the oscilloscope is used. Therefore, we will consider how the sensor is checked on the VAZ-2110 using this device.

With such a check, the DKPV does not need to be removed, and all measurements are made directly on the car.

Before checking, you need to correctly connect the oscilloscope to the machine. Typically this instrument has one clamp and two probes.

The clamp must be connected to the engine mass, that is, to any metal component of the motor.

One probe is installed in parallel to the sensor signal output terminal. The second probe is connected to pin 5 on the scanner connector.

After connecting, switch the device to the "Inductive Crankshaft" mode.

After that, start the engine. If it does not start, then it will be necessary to rotate the crankshaft with a starter so that the oscilloscope takes readings.

After that, already according to the received oscillogram, it is possible to evaluate the performance of the sensor. Any irregularities in its operation will affect the image of the oscillogram, and it will be clearly visible.

Opel Vectra B comprehensive check

Now let's take another car and on it we will consider the last of the verification methods - a complex one.

Such a test is much better than with a conventional multimeter, but it is not as accurate as an oscilloscope.

The problem car will now be Opel vectra B. Leave the symptoms the same.

Initial work also does not differ from the VAZ-2110: the sensor is removed, inspected, thoroughly washed, and only after that you can start checking the condition.

But for a comprehensive check, you will need more equipment:

• Multimeter;
• Megohmmeter;
• Instrument for measuring inductance.

All measurements are best done in a heated room so that the readings are correct.

First, the resistance of the coil is measured, as described above. Resistance readings should be within the range specified in the technical documentation.

The next check is to measure the inductance of the winding, for which a device is used to measure it. The working DPKV inductance should be in the range of 200-400 mH.

Devices in the photo below.

The insulation resistance is also checked with a megohmmeter. When a voltage of 500 V is applied, the resistance indicator of the sensor should be no more than 20 MΩ.

Based on these measurements, it is established whether the DPKV is working, or if it needs to be replaced.

Features of checking for other cars

As for other cars, for example, the VAZ-2109 with an injection engine, the VAZ-2112 and the VAZ-2114, their checks are carried out identically to the VAZ-2110 car.

It is noteworthy that for VAZs, when checking the resistance of the crankshaft sensor coil, an additional check can be carried out.

But for this, the multimeter must be switched to the voltmeter mode with a measurement limit of 200 mV.

After that, connect the probes to the DPKV terminals and hold with any metal object, for example, a screwdriver, at a short distance from the core.

If the sensor is working properly, it will react to metal, the multimeter will show voltage surges on the display. The absence of these surges will indicate a malfunction of the element.

As for a car like Reno logan, then the difference from the VAZ in this car is reduced to slightly different readings of the resistance of the sensor coil when measured with an ohmmeter.

A working DPKV Logan has a normal resistance of 200-270 ohms.

For Daewoo Lanos, the coil resistance should be in the range of 500-600 ohms.

But on the ZMZ-406 engine, installed on Volga and Gazelle cars, the coil resistance in the range of 850-900 ohms is normal.

Outcome

Whatever car you own, but if an injection engine is installed on it, it means that problems in the operation of the motor due to DPKV are quite possible.

Experienced car enthusiasts always keep a spare sensor in their car so as not to be taken by surprise.

It is much easier to install new item and go further, and then check the filmed for working capacity, than at the most unexpected moment you encounter the fact that the car refuses to work normally because of such a small, but very important elementas the engine crankshaft position sensor.

Any of these problems will cause the engine to stall.

Sensor operation and breakage detection

Check DPKV for serviceability

To make sure that there is a suspicion of a breakdown of the crankshaft sensor, two most likely cases of its malfunction are considered. In both of these cases, it will be necessary to dismantle the device with a ten-thread wrench. Before the operation, marks are drawn on the crankcase and the sensor itself, which later will help to tighten the device to the initial angle of rotation.

Also, the motorist must not forget to measure the clearance between the synchrodisk and the sensor before dismantling, which cannot go beyond the size of 0.6-1.5 mm. If there are no mechanical damages such as scratches, dents, damage to the material structure, the sensor is checked using other measuring instruments:

• checking with an ohmmeter. In this case, it is necessary to measure the resistance of the sensor winding. Since the standard value of this indicator, set by the manufacturer, ranges from 550 to 750 Ohm, exceeding the specified limits signals the malfunctioning of this auto device, which is important for the correct operation of the auto device, which means that it is faulty. It should be noted here that the manufacturer still allows a slight discrepancy in resistance with the passport values, but in any case they must correspond to the data specified in the machine's operating instructions;
• check with a voltmeter, inductance meter and transformer. This method is more complicated, but more effective - the resistance is measured with the same ohmmeter, after which the inductance is checked (should be from 200 to 4000 millihenries), with a sensor winding voltage of 500 volts. Next, you need to measure the resistance with a megohmmeter and make sure that it does not exceed a value of 20 megohms.

If the sensor still does not pass these tests, then it must be replaced. During this procedure, it is necessary not to forget about the distance between it and the synchronization disk specified by the manufacturer, as well as alignment with the marks on the crankcase that were made on the previous device. Before installing a new sensor, it must be checked, since even if all installation procedures are followed correctly, it may not work correctly.

It will be useful for many owners to find out what are the signs of a malfunction of the VAZ 2110 crankshaft sensor. Some of them, especially those who first encounter injection engines, do not even know about its existence. Nevertheless, it is available and performs an important function in engine management. Modern motors are equipped with several different sensors, but this one is the “main” one. Its failure makes it impossible to start the power unit.

The owners of this family of cars should know the symptoms of a malfunction of the VAZ 2110 crankshaft sensor in order to be able to navigate in a situation when problems arise with the power unit of the car. Motors can be equipped with devices of various design, therefore, in order to replace them if necessary, you need to look for an analogue of the device used on your machine.

Why is it needed on a car?

When problems arise with starting the power unit, most drivers immediately start looking for problems in the fuel system or in the ignition unit of the car. But such searches do not always lead to success and the engine starts. After contacting the specialists, it turns out that the crankshaft position sensor is the culprit. At first glance, such a small detail, but how many problems arose because of it.

This device is not intended to perform a control function, but to synchronize the phases of fuel injection and supply a signal for its ignition in the combustion chamber of the engine cylinder. Proceeding from this, it is safe to say that a failure in the operation of this device will lead to a lack of coherence of these systems, the start and operation of the motor will be impossible.

The device is an inductive type device that must respond to the passage of teeth on the master disk. It is installed on the generator drive pulley, and the sensor itself is located next to the pulley. There are 60 teeth on the disc, of which two are cut to form a depression. Thanks to its presence, synchronization with the TDC of the engine pistons is carried out. When the valley passes by the device, a signal pulse is generated to the powertrain control unit.

There are designs of such products that are based on the Hall effect, where the product also reacts to a rotating disc, but the operation occurs when a permanent magnet passes, after which the resistance of the sensor changes and a control pulse is issued. On the VAZ 2110 model, induction-type products are installed. The place of its installation cannot be called convenient for replacement, therefore the device is supplied with a cable with a connector, its length is approximately 80 cm.

A little about the symptoms of malfunctions

In the event of a complete failure in the operability of this device, start power unit "Tens" will not work, even with a very strong desire. Only him complete replacement allows you to continue driving your vehicle. Situations when this sensor suddenly fails are extremely rare, usually problems begin to accumulate gradually. Drivers begin to notice the essential while driving.

When hard pressing the gas pedal, there is such an unpleasant phenomenon as "failure". In carburetor motors, this happens when the accelerator pump does not work satisfactorily, but this model does not have it, the DPKV does not cope with its functions. There are also moments when it appears. Some novice drivers are guilty of the quality of the poured fuel and continue driving, but this is not the case and can lead to serious damage to the power unit.

It is also necessary to pay attention to this device in the case when, for no apparent reason, there is a noticeable increase in fuel consumption by the engine of your car. Problems with this device can also cause unstable motor operation in all modes. The sudden failure of this analyzer is mainly due to a factory defect in the manufacture of the product, and so often the culprit is the "human" factor. The presence of various kinds of contamination in the area of \u200b\u200bits installation, poor electrical contact in the connector, completely disrupt the operation of all engine systems.

What to do?

There is no need to rush immediately, throw away such a device, first you need to check it. You can do this yourself in your garage with a multimeter at your disposal. The reason for checking may be the glow warning light "CHECK ENGINE", experts translate these words, how to check the engine. Errors in the form of code 19 or 35 will be found in the control unit. The essence of checking this device is to measure the resistance of its working winding. In a working sensor, the value should be in the range of 800 - 900 ohms.

As you can see, there is nothing special about this system. We have sorted out the signs of a malfunction of the VAZ 2110 crankshaft sensor, now we can firmly say that you will be "fully armed" in the event of a similar situation. "Experienced" owners of a dozen recommend to carry it constantly in the car. It is inexpensive, but it can help out at the most inopportune moment.