⚙️VAZ 2110 crankshaft sensor: location, check, replacement

What is a crankshaft position sensor on a vase

The induction type crankshaft position sensor is installed next to a special disk located in conjunction with the crankshaft drive pulley. The special disk is called a reference or master disk. Together with it, it ensures angular synchronization of the operation of the control unit. Skipping two teeth out of 60 on the disk allows the system to determine the TDC of the 1st or 4th cylinder. The 19th tooth after skipping should face the DPKV rod, and the mark on the camshaft should be against the bent reflector bracket. The gap between the sensor and the top of the disc tooth is in the range of 0.8-1.0 mm. The sensor winding resistance is 880-900 Ohms. To reduce noise levels, the crankshaft sensor conductor is shielded.

Functions and purpose

On an engine with 8 or 16 valves, the DPKV is designed to perform not control options, but to implement phase synchronization for gasoline injection. Also, the crankshaft sensor on the VAZ 2110 transmits an impulse to ignite the air-fuel mixture in the combustion chambers of the power unit. Therefore, if the controller breaks down, this can lead to various vehicle systems not functioning coherently. This means that normal operation of the engine will be impossible.

VAZ 2112 crankshaft sensor

The VAZ 2110 crankshaft sensor itself is an inductive type device; this controller must respond to the passage of teeth on the master disk. This disk is mounted on the generator drive pulley, and the controller itself is installed next to it. There are 58 teeth on the pulley, between which there is a cavity the size of 2 teeth. This cavity allows synchronization with the top dead center of the engine pistons. The moment the depression passes the controller, a corresponding signal is sent to the engine control unit.

There are quite a few designs of devices of this type; the principle of their operation is based on a regulator such as the VAZ 2110 Hall sensor. In the latter case, the regulator also responds to a rotating shaft, but its operation is carried out as a result of the passage of a permanent magnet.

Inductive (magnetic) DPKV

The device is based on a magnetized core placed in a coil. At rest, the magnetic field is constant and there is no self-induction emf in its winding. When the top of the metal tooth of the driving disk passes in front of the magnetic core, the magnetic field around the core changes, which leads to the induction of current in the winding. When the disk rotates, an alternating current appears at the output, and the frequency of the current varies depending on the speed of the shaft rotation. The work is based on the effect of electromagnetic induction.

A special feature of this sensor is its simple design, which operates without additional power supply.

Hall effect sensor

The type of these sensors operates on a microcircuit, placed in a housing with a magnetic core, and the drive disk creates a moving magnetic field with magnetized teeth.

The sensor provides high accuracy of signal output in all specified crankshaft rotation modes. A sensor operating on the basis of the Hall effect requires a constant voltage connection.

Optical sensors

It is based on the physical phenomenon of the photoelectric effect. Structurally, it is a light source with a receiver (photodiode). Rotating between the source and the receiver, the perforated disk periodically closes and opens the path to the light source, as a result the photodiode produces a pulse current that arrives in the form of an analog signal to the control unit (the system has limited use and was previously installed in the distributors of injection cars, for example, Matiz).

Where is?

If malfunctions are noticed in the operation of the engine, then before you begin to identify the breakdown and signs of malfunction, you need to find out where the regulator is located. Where is the crankshaft position sensor located on an 8- or 16-valve “ten”? If you open the hood, you will notice that the regulator can be found directly on the oil pump cover. As you can see, the location of the regulator is not particularly convenient. VAZ engineers thought through this point, thinking about the convenience of replacing the controller, so they equipped the DPKV with a long 80 cm wire.

Location of the DPKV under the hood of the car

What cars is the crankshaft position sensor suitable for?

Model	Engine code	Year	Engine capacity, l.
110 (2110) 1.5	BA3 2111 / VAZ-2111	1995 — 2005	1,5
110 (2110) 1.5 16V	VAZ-2112	1995 — 2010	1,5
110 (2110) 2.0 i	C 20 XE	1996 — 2000	2
110 (2110) Wankel	VAZ-415	1997 — 2004	2,6
110 (2110) 1.6	VAZ-21114 / VAZ-21124	1995 — 2012	1,6
110 (2110) 1.6 16V	VAZ-21124	2004 — 2010	1,6
110 (2110) 1.6 LPG	VAZ-21114	2004 — 2007	1,6
111 (2111) 1.5	VAZ-2111 / BA3 2111	1996 — 2005	1,5
111 (2111) 1.5 16V	VAZ-2112	1995 — 2005	1,5
111 (2111) 1.6	VAZ-21114 / VAZ-21124	2004 — 2013	1,6
112 (2112) 1.5	VAZ-2111	1995 — 2005	1,5
112 (2112) 1.5 16V	VAZ-2112	1995 — 2005	1,5
112 (2112) 1.6	VAZ-21124 / VAZ-21114	2005 — 2011	1,6

Crankshaft position sensor VAZ 2110 - how to find a fault and replace it?

A modern car consists of many parts, each of which performs its own important function. Information about the condition of the engine and other components is transmitted by various sensors, but the VAZ 2110 crankshaft sensor performs work that is unusual for these devices.

Purpose of the crankshaft position sensor VAZ 2110

Crankshaft position sensor
If the engine of a 9th or 10th series car refuses to start, any driver immediately begins to check the power and ignition system, and when it comes to contacting a car service center, they say that the DPKV has failed (this is what the abbreviation looks like full name of the sensor). The bewilderment of car owners is dispelled when they find out that this is the only sensor without which the engine will not work.

The crankshaft sensor of the VAZ 2110, as well as on many other cars, does not perform a monitoring function, but synchronizes the phases of fuel injection and supplying an impulse to ignite the combustible mixture in the combustion chamber

Obviously, removing such an important attribute from the design makes it impossible for all systems to work harmoniously

In its operation, the sensor uses the principle of electromagnetic induction, and reads the necessary “information” from the generator drive toothed pulley. in close proximity to which it is installed.

Crankshaft sensor VAZ 2110 - malfunctions and their diagnosis

Bracket for crankshaft position sensor
Considering that the role of the DPKV in engine operation is very significant, in the event of its malfunction, a variety of “surprises” can be expected. A completely failed sensor will definitely prevent the engine from starting. Other manifestations of sensor problems include:

unstable operation of the engine at idle;
power reduction;
increase and decrease in the number of crankshaft revolutions (spontaneously);
detonation with increasing load;
launch intermittently.

For a device such as the VAZ 2110 crankshaft sensor, faults come down to two types:

damage to the windings and parts of the sensor itself;
violation of the integrity of the wire and the quality of connections in the circuit.

The PCV sensor itself is very simple in design and rarely fails. A crankshaft position sensor error or breakdown can be caused by reasons such as: manufacturing defects, mechanical damage, significant contamination. The first two reasons do not depend on the driver, and the car owner can monitor the cleanliness under the hood.

In addition to the fact that the engine compartment is always under the influence of many destructive factors, such as temperature changes, small stones and dust flying from the roadway, significantly adding to the problems of oil leakage. If it is found that engine oil is leaking anywhere. especially in the sensor installation area - on the oil pump body, it must be urgently eliminated. The contacts of the sensor wire connections must always be clean and protected. The wire insulation must not be damaged or exposed.

How to check if the crankshaft sensor of a VAZ 2110 is working?

Considering that a crankshaft position sensor error or complete failure has very similar symptoms to many other breakdowns, you should understand how to check its condition. You can only verify that the DPKV is working if you remove it. This is not at all difficult to do, you just need to follow these steps:

turn off the ignition;
remove the terminal connector with the wire from the sensor;
unscrew the only screw holding the sensor on the oil pump cover;
remove the sensor.

To check, you need to have an ohmmeter and check the resistance of the windings. If the instrument readings differ from the required 550-570 Ohms, it means the crankshaft sensor is faulty. You should not try to repair it, as this device cannot be repaired. The only way out of the situation is to replace the crankshaft sensor of the VAZ 2110. The cost of the DPKV is low, installation does not require much time and skills, especially since the car without it still remains motionless. If the device shows that the resistance of the sensor windings is normal, then the breakdown should be looked for elsewhere.

How to replace the crankshaft sensor?

Installation, as well as removal of the PCV sensor, is done quickly and without difficulty. Before proceeding with installation, the installation site should be cleared of dust and dirt. Next, simple steps are performed: the new sensor is inserted into its regular place; the fastening screw is tightened; The connector with the wire is put on. At this point, the replacement of the VAZ 2110 crankshaft sensor is completed and you can start starting the engine.

Features of injection systems

The injection system operates thanks to a sensor system and a control unit. All signals are input to the microprocessor unit, which regulates the operation of the actuators. The following sensors are responsible for the correct operation of the engine:

Crankshaft positions.
Camshaft positions (not on all versions).
Intake manifold pressure.
Lambda probe.
Speed.
Mass air flow.
Throttle position.

And the main role is played by the VAZ-2110 crankshaft sensor (8 valves or 16), since the moment of injection and supply of high voltage to the spark plug electrodes depends on it. The design has a temperature sensor, but it has virtually no effect on operation. It is necessary to control the engine temperature and send a signal to the dial indicator (or to the on-board computer). But it will be indispensable if it is necessary to implement automatic switching of fuel types (from gasoline to gas and back).

Algorithm of operation of the injection system

The microprocessor has several inputs and outputs. The inputs receive signals from all sensors. But first, these signals are converted and, if necessary, amplified. The microcontroller is programmed to work with sensors and actuators. Programs (firmware) can provide various engine characteristics.

You can achieve an increase in power (gasoline consumption will increase) or a decrease in consumption (power will suffer). But most motorists prefer programs that provide work with average parameters. In this case, the signal from the VAZ-2110 crankshaft position sensor does not change; only the reaction of the actuators to changes in input data is adjusted.

Signs of a malfunction of the VAZ 2114 crankshaft sensor - TOP 9 symptoms, methods of checking

If the “check” is lit on the dashboard, the engine is unstable or does not start at all, the owners of the “fourteenth” begin to be interested in the signs of a malfunction of the VAZ 2114 crankshaft sensor. This article describes the main symptoms of its failure and methods for checking the part, as well as types of sensors for this model auto.

Types of crankshaft sensors VAZ 2114

The VAZ 2114 crankshaft sensor is a small part that transmits information about the position of the crankshaft to the electronic engine control unit. Based on this data, a spark and fuel are supplied to the engine. This allows it to start and function normally.

The crankshaft position sensor has the following structure:

The part is located under the hood on the oil pump bracket. And its toothed disk is located on the crankshaft pulley. It has a very small size, recognizable shape and is made of plastic.

There are three types of such elements that are installed on the “four”:

Inductive or magnetic. It consists of a metal rod, a magnet and a copper winding. The part is capable of attracting metal objects.
Operating according to the Hall principle. The device determines the position of the crankshaft by changes in readings when a metal object approaches. But it does not attract him to itself, since it is not equipped with a magnet.
Pulse. When the crankshaft approaches such a part, the impulses emanating from it are interrupted. This is how she determines his position.

Usually magnetic sensors are installed on the VAZ 2114. They are also often suitable for VAZ 2109, 2110, Kalina, Priora and other AvtoVAZ models. But there are also other models of devices on the “fourteenth”.

9 Signs of malfunction of the VAZ 2114 DPKV

The main symptoms of a faulty crankshaft sensor are:

The Check Engine light is constantly on. The icon on the dashboard does not go out some time after starting the engine;
Floating idle speed. They rise or fall arbitrarily;
Engine tripping. A characteristic shaking of the engine and car is felt, both when the power unit is not warmed up, and sometimes after warming up;
Arbitrary decrease or increase in speed while driving. This can be seen from the instruments on the car panel;
Increased fuel consumption. Gasoline lasts a shorter distance than before. You have to stop by the gas station more often;
The engine stalls at idle. The termination of its work occurs unexpectedly and for no apparent reason;
Detonation knocks when the engine is running. It deals with frequent unpleasant sharp sounds;
The engine does not start the first time or does not start at all;
On the on-board computer or during diagnostics by a tester, errors 0335 or 0336 are detected. They indicate problems with the sensor, a bad signal or its absence.

A little about the crankshaft

The crankshaft is the most important element of any internal combustion engine. It is driven by the starter (at the moment of starting) and the pistons (in operating mode). From it, torque is transmitted to the gearbox, gas distribution system, and auxiliary mechanisms. And in order for fuel injection to be carried out in a timely manner, a spark to form at the right moment, a VAZ-2110 crankshaft sensor is needed.

It monitors the position of the pulley and transmits a signal to the electronic control unit. The pulley has teeth, the distance between them is the same. But in one place there is a gap - two teeth are missing. The position sensor reacts to the approach of metal. When an empty area passes near the sensor, a signal is generated - the control unit is notified that one revolution of the crankshaft has occurred.

Features of work

The crankshaft position sensor of the VAZ 2110 operates on the inductive principle. The crankshaft pulley is a gear with 58 total teeth. The place of two teeth on the control disk is occupied by a recess, which makes it possible to synchronize the rotation of the crankshaft with the control point of the piston stroke of the first cylinder of the internal combustion engine. As the pulley rotates, the sensor reads the passage of the teeth and at the point where the notch passes, the controller transmits a signal to the ECU.

The ECU, receiving numbers about the location of the crankshaft, issues a signal regarding the order of fuel supply to each cylinder and the formation of a spark.

The crankshaft sensor is installed on a VAZ 2110, with a motor of 8 and 16 valves, on the cover of the oil supply pump near the crankshaft drive disc. Structurally, tracking devices have different layouts, but the principle of operation of the element is based on the design of the Hall element, which reacts to the passage of a permanent magnet.

Replacing chips and pinout of DPKV VAZ 2110

Over time, the wires going to the DPKV chip wear out. Located in the lower part of the engine and not far from the front wheel, as a result, dirt, snow, oil, and aggressive chemical media in the form of salt get on the DPKV and its chip and settle, which leads to slow oxidation of the wires on the chip and subsequently to their breakage. Since the wires from the chip are combined into a single bundle, when replacing it, a repair chip is provided with protruding two wires 15 cm long. Having removed the damaged chip, install a new one with a twist. The twist points are insulated using heat shrink or electrical tape.

From the diagram below it can be seen that their pinout is not complicated and two wires are directly connected to the signal input contacts in the control unit, passing along the entire length of the harness. The polarity of the connection between the signal wires of the sensor and the control unit must be observed. If the polarity is reversed, the synchronization system will not work. To restore the operation of the DPKV, you simply need to swap the wires and check the functionality by starting the engine.

Device and classification

Despite the fact that the VAZ crankshaft sensor may have a different design, its operating principle is based on a single electromagnetic effect. That is, the signal is generated without direct contact with the crankshaft.

The most common type of DPKV is induction. Such a part consists of two main elements - a magnetized rod and a special winding. Induction sensors read information from the crankshaft toothed pulley. When a metal tooth passes near the DPKV, an EMF is formed in the latter, which is captured by the electronics. On the VAZ-2110, the crankshaft sensor is installed of the induction type.

DPKV can also be based on the Hall effect. Such a sensor is constructed in approximately the same way as an induction sensor, however, when a metal shaft passes near it in the winding of the device, the resistance changes. Structurally, it consists of a permanent magnet.

It should be noted that both the first and second types of sensors are used to read data from the crankshaft pulley. It can be toothed or all-metal. In the latter version, there is a special recess that passes by the sensor and generates a signal that is sent to the vehicle’s electronic engine control unit.

Signs of breakdown

Any malfunction of the VAZ 2110 crankshaft sensor will cause the engine to be unable to start after a long period of parking. If the controller starts to malfunction while operating the car, in 90% of cases the engine will stall, since the ECU will not generate a signal to the ignition system, and the internal combustion engine safety function will work. Signs of a sensor malfunction when the unit begins to break down:

Check Engine is activated on the dashboard;
engine speed becomes unstable, traction decreases by 50%;
The VAZ 2110 crankshaft sensor must be urgently changed if the following sign of a malfunction appears: when the speed increases, a hum is felt in the engine area and knocking;
An injection engine is characterized by the appearance of popping noises in the exhaust tract area.

When the VAZ 2110 dpkv is completely faulty, the engine stalls because the computer does not send signals to form a spark.

These symptoms do not always indicate that a complete replacement of the VAZ 2110 crankshaft sensor is necessary, since all faults of the element are conditionally divided into four groups:

surface clogging;
damage to the winding of the device and violation of its integrity;
manufacturing defects;
open circuit or short circuit in the circuit.

Checking the sensor begins with cleaning the part. The cleanliness of the contacts, their security, the cleanliness of the connector are checked, and oil stains are eliminated. The design of the sensor is quite simple, but 20 percent of device failures are factory defects. The wiring break is repaired after ringing the circuit. The VAZ 2110 crankshaft sensor is not repaired, since the cost of the consumable does not exceed 100 rubles; the unit is replaced with a similar one after a short diagnosis.

Signs of sensor malfunction

Since fuel dosing and the ignition system are adjusted based on the signals of this sensor, its malfunction leads to signal distortion and, as a result, interruptions in the functioning of the power plant or the inability to start.

Signs of a broken crankshaft sensor are:

the engine does not start and the “Check engine>” signal;
difficulty starting the engine;
instability of engine operation under different modes;
a noticeable drop in engine power for no apparent reason;
When the load increases, engine detonation appears.

If at least one of these malfunction indicators appears, you should find out whether the sensor is the cause of the engine malfunction. But to do this you need to know how to check the crankshaft sensor.

Problems starting the engine

Variants of crankshaft sensor malfunction affecting the internal combustion engine:

The engine does not start. When you turn the key in the ignition, the starter turns the engine and the fuel pump hums. The reason is that the engine ECU, not receiving the signal from the crankshaft position sensor, cannot correctly direct the command: in which cylinder to give a spark, and in which to open the injector.
The engine warms up to a certain temperature and stalls or does not start in severe frost. There is only one reason - a microcrack in the winding of the PCV sensor.

Unstable engine operation in various modes

This happens when the DPKV is contaminated, especially when metal shavings or oil get on it. Even a slight impact on the synchronization sensor of magnetic microchips changes its performance characteristics, because the meter is highly sensitive.

Presence of engine detonation with increasing load

The most common reason is a failure of the measuring device, as well as a microcrack in the winding that diverges due to vibration, or a split in the housing into which moisture enters.

Signs of engine detonation:

disruption of the smooth combustion process of the fuel-air mixture in the internal combustion engine cylinders;
pops in the receiver or exhaust system;
misfires;
a clear decrease in engine power.

Reduced engine power

Engine power drops when the command to supply the air-fuel mixture is untimely. The cause of the malfunction is the delamination of the damper and the shift of the toothed star in relation to the pulley. Motor power is also reduced due to damage to the winding or housing of the crankshaft position meter.

Causes of failure

There are a small number of reasons why a sensor may fail, but they still exist.

Mechanical damage;
Aging;
Electrical damage;
Open circuit control;

Let's consider each of the breakdown options in more detail.

Mechanical damage. May be caused by any impact to the sensor. For example, when trying to dismantle the sensor, similar breakdowns are possible.

Aging. Often on older cars the sensor may fail due to its aging and demagnetization of the core.

Electrical damage. With such a breakdown, the coil inside the sensor most often breaks, and it stops sending a signal to the ECU.

Open circuit control. A break in the control circuit does not refer to a sensor failure. If there is a break, the wiring that transmits the signal from the sensor to the ECU is affected.

Checking the DPKV for serviceability

To verify the suspicion of a breakdown of the crankshaft sensor, the two most likely cases of its malfunction are considered.
In both of these cases, you will need to dismantle the device using a ten-threaded wrench. Before the operation, marks are drawn on the crankcase and the sensor itself, which will later help to tighten the device to the initial angle of rotation. Also, the motorist should not forget to measure the clearance between the synchro disk and the sensor before dismantling, which cannot go beyond the size of 0.6-1.5 mm. If there are no mechanical damage such as scratches, dents, or 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 Ohms, going beyond the specified limits indicates the malfunction of this device, which is important for the correct operation of the car - which means it is faulty. It is worth noting here that the manufacturer still allows a slight discrepancy in resistance with the nameplate values, but in any case they must correspond to the data specified in the machine’s operating instructions;
checking 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 millihenry), with a sensor winding voltage of 500 Volts. Next, you need to measure the resistance with a megger and make sure that it does not exceed 20 MOhm.

If the sensor still does not pass these tests, it must be replaced. During this procedure, it is necessary not to forget about the distance between it and the synchronization disk regulated 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, be sure to check it, since even if all installation procedures are followed correctly, it may not work properly.

A new DPKV is checked according to the same procedure as a supposedly faulty one, and based on the test results, the device can be installed instead of the previous one or rejected. When installing, the bolts are tightened with a torque of 8 to 12 Nm. However, in any case, before carrying out all the actions to replace a rather expensive and hard-to-reach component, you should definitely make sure that it is the one that has failed, because cars produced by our automotive industry can often bring unpleasant surprises.

First way to check

In this case, you will need an ohmmeter , which you will use to replace the resistance on the winding. According to the manufacturer's standards, the indicator ranges from 550 to 750 Ohms.

It's okay if your numbers are slightly different from the norm. If the deviations are serious, you will definitely have to replace the sensor.

It should be noted in fairness that the crankshaft position sensor on VAZ 2110 models rarely breaks down. Among the main reasons for its failure to function normally is the accumulation of dirt, mechanical damage, as well as banal factory defects.

Features of testing on other cars

As for other cars, for example, VAZ-2109 with an injection engine, VAZ-2112 and VAZ-2114, their check is 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 to do this, the multimeter must be switched to voltmeter mode with a measurement limit of 200 mV.

Then connect the probes to the DPKV terminals and pass them 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 bursts will indicate a faulty element.

As for a car like the Reno Logan, the difference from the VAZ in this car comes down to slightly different readings of the resistance of the sensor coil when measured with an ohmmeter.

A working Logan DPKV 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 normal coil resistance is in the range of 850-900 Ohms.

Second method

Here you will need a voltmeter, a transformer and an inductance meter. It is advisable to measure resistance under compact temperature conditions.

Once the ohmmeter readings are obtained, arm yourself with an inductance measuring device. Normally, the device should show from 200 to 4000 units (millihenry).

A megger measures the resistance when the crankshaft position sensor winding is powered at 500 volts. Under normal conditions, the readings will be no more than 20 MΩ.

What is the gap on the VAZ crankshaft sensor

The ECU installed on injection cars, controlling sensors and actuators, for correct and efficient operation must know exactly what position the engine crankshaft is in at every moment of time - in other words, have clear synchronization between the digital and the hardware.
This is necessary, first of all, for calculating and timely supplying the injection pulse to the injectors and the explosive discharge to the spark plugs. The power, durability and efficiency of the engine depend on the timeliness of these events, so the need for the control unit to accurately determine the crankshaft position at any time is beyond doubt. Synchronization is carried out using a crankshaft sensor (CPS) and a toothed drive disk mounted on the crankshaft in a certain position. There are 60 teeth placed on the circumference of the disk, each tooth accounts for (360:60) = 6 degrees of crankshaft rotation angle. But there are deliberately no two teeth in a row in one place; their absence creates a gap. Total 58. The master disk is installed in such a way that after skipping two teeth by the DPKV core, as the crankshaft rotates, 114 degrees remain before TDC. Each tooth is 6 degrees. Total 114_6=19 whole teeth. In other words, when the crankshaft is in the TDC position of the first cylinder on the compression stroke, when all the marks (on the flywheel, camshafts) are combined, the crankshaft sensor should look at the beginning of the twentieth tooth after the skip, as the disk rotates. 7.jpg (30.92K) Number of downloads:: 926 Unfortunately, in practice this is not always the case. It happens that the key on the crankshaft gear is cut off, 5.jpg (32.12K) Number of downloads:: 871 Most often, not even the one that the arrow points to, but on the gear itself there is a cylindrical protrusion, which determines the position of the disk on the crankshaft gear. It happens that the thread in the CV itself is not completely cut, or is clogged at the end, and the fastening bolt does not press the disk with the required force to the crankshaft gear; sometimes the rubber damper of the pulley itself rotates, and the ring gear rotates relative to the CV. There is only one result: If the master disk moves at least 1 tooth relative to the HF, the ignition timing shifts by 6 degrees in all operating modes and the injection phase with all that it implies. If you look at the drive disk from the side of the head of the fastening bolt, and set the marks, the teeth will skip (if on a clock dial) by about 10 minutes. (Rotate the disk clockwise) 6.jpg (33.78K) Number of downloads:: 727Roughly speaking, at this moment he looks at the inspector under the hood. We check the accuracy of the marks and count the teeth from the skip around the circle counterclockwise. The crankshaft sensor core should look at the beginning of the 20th tooth. If so, the check is over.

1 – battery; 2 – ignition switch; 3 – ignition relay; 4 – spark plugs; 5 – ignition module; 6 – controller; 7 – crankshaft position sensor; 7 – crankshaft position sensor; 8 – master disk; A – matching devices

Operating range The resistance of the DPKV in an injection engine should be between 550-750 Ohms.

The crankshaft position sensor plays an important role in engine stability. Perhaps this is the only sensor in the electrical engine control circuit, due to a malfunction of which the engine may not start.

Types of crankshaft sensors

According to their design features, crankshaft position sensors can be magnetic, based on the Hall effect, or optical.

A magnetic (magnetoresistive) type sensor operates under the influence of a magnetic field arising from a permanent magnet passing in close proximity. In a Hall sensor, the current strength varies depending on the magnitude of the magnetic flux - according to the principle of operation, this model resembles an ignition distributor. The optical sensor has a toothed disc built into it.

Gear

The gear is always present where there is a crankshaft position sensor (CPS). When teeth pass near the sensor, the direction of the magnetic flux changes, and the sensor transmits the changed signal to the engine control unit. The unit synchronizes the data received from the DPKV with the injectors, supplying a spark to the cylinder at the moment when the piston is at top dead center and the compression cycle is in progress.

The teeth are located around the circumference of the wheel every 6 degrees. If a circle of 360 degrees is divided by 6, then there should be 60 teeth. But in this circle there is a gap of 2 teeth, so there are only 58 of them. This is done so that the sensor can determine through the crankshaft when the top dead center of the first piston will be cylinder.

Structurally, the teeth can be made on the crankshaft pulley, on the crankshaft itself, on the flywheel, and even on the clutch basket. Accordingly, the DPKV is located next to the gear wheel. The distance between the sensor and the edge of the tooth should be approximately one millimeter. This gap is necessary to create a magnetic field.

Crankshaft position sensor VAZ-2114

The VAZ-2114 is equipped with a magnetic-type DPKV. The sensor is suitable for many front-wheel drive VAZ models with an injection 8-valve or 16-valve engine: VAZ-2108-09, VAZ-2110-12, Kalina, Priora. A widely used type of sensor is labeled VAZ-2112.

The DPKV is mounted on the engine oil pump bracket, and the toothed disk is located on the crankshaft pulley. It turns out that the sensor is located in the front right corner of the car under the hood. The DPKV is not difficult to access and can be replaced quite easily even by a novice. Changing the part is very simple: disconnect the plug with wires, unscrew the fastening screw - that’s it, the sensor is removed. It is installed in reverse order. It is necessary to ensure that no dirt gets under the DPKV mounting point. After installing the part, check the gap between the sensor and the toothed disk - it should be approximately 1 mm, a deviation of ± 0.5 mm is acceptable.

Signs of malfunction of the VAZ-2114 DPKV

As a rule, DPKV on VAZ cars is reliable and rarely fails. Very often, the cause of the malfunction lies not in the part itself, but in broken wires or dirt and oil getting between the sensor and the gear disk. DPKV burns to suffer from an impact as a result of hitting an obstacle or in an accident.

The likelihood of a faulty state of the PCV sensor can be determined by the following signs:

— engine idle speed “floats”;
— the engine does not have enough power;
— detonation knocks occur in the cylinders;
— the engine picks up and slows down on its own;
— the engine does not start at all;
— the “Check Ingine” warning light in the cabin lights up.

It is impossible to start the engine if the sensor is completely faulty. Based on all other signs, we can only assume that the DCPV is faulty; more precisely, it can be determined using computer diagnostics. You need to look at the error codes. For example, code 0335 means an incorrect crankshaft sensor signal, and code 0336 means an error in the DPKV signal.

How to check the VAZ-2114 DPKV for serviceability

To check the crankshaft position sensor, it must be removed and inspected for mechanical damage. If dirt is found on the sensor, the part should be thoroughly cleaned.

You can check the DPKV using an ohmmeter. A working sensor has a coil resistance of 550-750 Ohms. A multimeter is used to check the inductance of the winding, but you cannot be sure that the DPKV is working properly, even if all the readings coincide with the permissible parameters. In this case, the state of the magnetic core is not taken into account in any way, so an oscilloscope is best suited for diagnostics.

Controller diagnostics

Diagnostics of the crankshaft position sensor is carried out on the dismantled controller. It is recommended to set a timing mark on the crankcase before removing it so that when installing a new element, the correct gap between the tracking device and the timing disk will be maintained. The permissible gap is 0.6–1.5 mm.

We remove the element with a 10mm wrench and carry out a visual inspection. Before checking the crankshaft sensor, the battery is disconnected and the contact points are checked. During a visual inspection, the integrity of the housing, wires, connectors, and the absence of cracks and dents on the housing are checked. If there are no signs of mechanical damage, the DPKV is checked with a multimeter.

Testing of the node can be carried out both by resistance and voltage parameters. Testing for resistance is much simpler, so it is used in most diagnostic options.

The resistance on the working controller winding should be in the range of 550–750 Ohms. Measurements are taken on two contacts of the part. For a 16-valve injector engine, a resistance deviation of 5% is considered acceptable.

Drivers rarely use the second testing option, although diagnostics with a voltmeter are considered more reliable. To check, you will need a transformer and an inductance meter, for example, the MY-6243 multimeter model is often used to measure capacitance and inductance. Checking step by step.

Calculate the inductance dpkv. The working element at a voltage of at least 500 mV will show an inductance in the range of 200–4000 iH.
Check the resistance; a working sensor shows a parameter of 20 mOhm.

Replacing and checking the crankshaft position sensor on LADA

DPKV (crankshaft position sensor), also known as TDC sensor (top dead center sensor) is the only sensor of the engine management system, if which breaks down, the engine will definitely not start. This sensor has no mechanical moving parts, so it rarely fails. Most often, corrosion-damaged wiring is to blame for its failure.

Signs of a faulty crankshaft sensor

A completely faulty DPKV will not allow the engine to start. In other cases, sensor malfunctions can be identified by:

poor engine starting;
unstable motor operation;
reduction in engine power;
detonation with increasing load.

Replacing the crankshaft sensor

Where is the crankshaft sensor located? On all LADA cars, the DPKV is attached to the engine crankcase (to its lower part) using one bolt. On the diagram it is number 2.

To change the crankshaft sensor, disconnect the block with wires from it and unscrew the mounting bolt (10mm wrench). On Renault-Nissan engines (for example, H4M), you will first have to remove (move aside) the protective casing.

Installation of the DPKV is carried out in the reverse order. Using a set of feeler gauges, we check the gap between the end of the sensor and the teeth of the crankshaft pulley. The gap should be 1±0.41 mm; it is specified by the design of the sensor and is not adjustable.

How to check DPKV with a multimeter

Set the multimeter to ohmmeter mode and connect the probes to the DPKV contacts. The resistance should be between 550-750 Ohms.

Set the multimeter to voltmeter mode (with a measurement limit of up to 200 mV). Connect the probes to the sensor contacts and bring a steel object to the sensor core several times. If the sensor is working properly, the device should detect voltage surges. You can more accurately check the DPKV without removing it from the engine. Rotate the crankshaft pulley and monitor the voltmeter readings. In a working DPKV, the voltage at the terminals reaches 0.3 V.

If the DPKV turns out to be serviceable, and the error (for example, p0335) in the engine control system has not disappeared, then you should clean the sensor of dirt and check the integrity of the wire and the quality of the connections in the circuit.

Let us remind you that the engine control system includes a number of other sensors that we talked about earlier.

To change or not to change?

Let’s make a reservation right away: before deciding that the DPKV needs replacement, you need to check:

Condition of the wiring going to the DPKV;
Availability of high-quality contacts in the circuit;
No damage to wire insulation;
No oil on the crankshaft position sensor. Since the oil pump is located next to the DPKV, oil leakage can also cause its malfunction.

Functional crankshaft position sensor

If you have already examined everything, you need to check the sensor itself. But to do this you need to remove it.

Replacement

If signs of a malfunction of the DPKV are associated with damage to the device, it is replaced without repair. The controllers are located in an inconvenient place; they are attached to the oil pump cover with a single bolt. How to remove an element step by step.

The ignition is turned off, the negative terminal of the battery is removed.
The oil pump where the sensor is located is determined, and the connector is removed. There is an 80 cm wire from the controller to the block; you can determine the location of the connector by the wire.
Use a 10mm wrench to unscrew the only screw.
The device is removed.

Before installing a new element, you must thoroughly clean the sensor seat and connector plug, and check the integrity of the wiring. This will avoid rapid failure of the new part.

If the problem in the operation of the internal combustion engine is due to the lack of a signal from the sensor connector on the computer, check the integrity of the wiring. Electronics diagnostics, if there is a signal but no response from the electronic unit, are carried out in a specialized workshop. In 90% of cases, flashing of the control system and replacement of electronic components is required.

In half of the cases, the sensor fails due to simple dirt. The controller is located in close proximity to the oil pump, which can throw out drops of liquid. Oil getting on the sensor reading element clogs the surface, oxidizes and interferes with the full transmission of data.