Any of the listed problems leads to the engine stop.
Sensor operation and damage definition
Check DPKV for service
To make sure the crankshaft sensor is suspicious of the breakdown, the two most likely occurrence of its malfunction are considered. In both of these cases, it takes a dismantling of the device through the key on the threads under ten. Before the operation on the crankcase and the sensor itself, labels are drawn, which will later help infuse the device to the initial angle of rotation.
Also, the motorist should not forget to measure the clearance between the sync and the sensor, which cannot go beyond size 0.6-1.5 mm. If there are no mechanical damage such as scratches, dents, damage to the material structure, the sensor is checked using other measuring instruments:
- opening check. In this case, it is necessary to measure the resistance of the sensor winding. Since the standard value of this indicator, the manufacturer installed ranges from 550 to 750 ohms, the output for the indicated limits signals the incorrect operation of this important device for correct operation - it means that it is defective. It is worth noting here that the manufacturer still allows a slight discrepancy on resistance with passports, but in any case they must comply with the specified data in the instruction manual of the machine;
- check voltmeter, inductance meter and transformer. This method is more complicated, but effective - resistance is measured by the same ohmmeter, after which the inductance is checked (it should be from 200 to 4,000 milligeni), with a voltage of the 500 volt sensor winding. Next, it is necessary to measure the resistance to the megommeter and make sure that it does not exceed the value of 20th.
If the sensor still did not pass the test data, then it is subject to replacement. With this procedure, you must not forget about the governed distance by the manufacturer between it and the synchronization disk, as well as alignment with the cartridge marks that were made on the previous device. Before installing a new sensor, it must be checked, since even when it is properly executed all procedures for installation, it may not work incorrectly.
As is known, the electronic motor control system has a large number of different elements. If there is a malfunction of any link, translates the motor into an emergency mode, the engine can told, badly start, on the dashboard, etc. At the same time, the unit will still work, albeit unstable if air, fuel is supplied to it, and there is a spark on the ignition candlelight. A feature of the DPKV can be considered that malfunctions or malfunctions in its operation usually lead to engine stop. Next, we will consider which signs of the crankshaft sensor malfunction indicate problems with the specified element.
Read in this article
Crankshaft sensor functions
As already mentioned, one of the explicit signs of DPKV problems is the complete stop of the engine. This is obtained as a result of the fact that the failures in its operation do not allow the system of the power system in a timely manner, and the ignition system is not capable of setting up the fuel mixture at a given moment. Now consider why it happens.
The crankshaft sensor sends signals to the ECU, signaling the position of the crankshaft at a certain point, and also reports the direction of rotation of the shaft and indicates the rotational frequency. Note that on different cars, both the device itself and some DPKV functions may differ. It depends on the type of the installed element. Devices can be:
- magnetic inductive type;
- optical sensors;
The electronic control unit receives signals from the specified device, making the controller "knows" the position of the crankshaft relative to the NTC in the first and fourth cylinder, and also fixes the frequency and direction of rotation of the shaft. Based on this data, the block generates signals to control the moment of ignition, creates control pulses for injection injectors, manages work, etc.
Crankshaft position sensor: Signs of malfunction and testing DPKV
In the event that the cause of the problem is the crankshaft sensor, the signs of malfunction may be as follows:
- cold or heated engine will not start;
- during operation under load arises;
- the engine power is reduced, dynamics disappears;
- rolls will jump during traffic, revolutions are rapidly changed, etc.
It should be borne in mind that the specified symptoms may appear as a result of other faults. For this reason, other possible malfunctions should be excluded before starting manipulation with DPKV. You should also add that the failures in the operation of the crankshaft sensor can occur not constantly. In other words, unstable operation of the engine or launch problems can not always manifest, although the "check" lights up. In a situation of situations, it is recommended to produce computer diagnostics of the car engine to more accurately determine the cause.
You can also check the crankshaft position sensor yourself. For such an audit, there are several available methods that allow you to determine the functionality of the element with relative accuracy. The device is enclosed in a plastic housing, which is usually attached on the bracket at the location of the generator drive pulley. Also, a wire that has a large length can also be connected to the item. The use of such a wire is due to the fact that the place of installation of DPKV is quite remote.
Note that the crankshaft sensor itself fails to rarely. More often, the reason is mechanical damage during the work in the workpiece, as well as the falling out of foreign objects into the space between the sensor and the gear pulley.
If the visual inspection did not reveal anything, then the synchronization sensor needs to be removed, after which you can proceed to check. The element should be viewed again, which helps to determine the damage to the body, core, the contact pad. It should be added that quite often after simple cleaning of contacts and cores from dirt DPKV begins to work normally.
In the case when visible defects were not seen, it should be projected to diagnose the sensor using a multimeter. The device is transferred to an ohmmeter mode to measure resistance on the DPKV winding. Normally, the testimony should be 550-750 ohms. There is also a method with which the synchronization sensor inductance is fixed, but such a diagnosis is more complicated for implementation in garage conditions and requires additional equipment (voltmeter, network transformer).
It should be noted that one of the rapid verification methods is the installation of a deliberately good or new synchronization sensor. If the engine starts and works normally after replacement, then the reason is obvious. It must be borne in mind that during the installation of the crankshaft sensor, the clearance should be properly exhibited, which is present between the gear pulley and DPKV. A qualified sensor installation suggests that the gap between the sensor core and the synchronization disk is 0.5 - 1.5 mm. Adjusting the specified gap is possible by installing additional washers at the location of the crankshaft sensor seat.
Summarize
Taking into account the above, it can be concluded that the crankshaft sensor is one of the most important elements in the overall electronic control scheme of the power unit. The failure of the DPKV will lead to a complete stop of the engine, the failures in its work greatly complicate the operation of the vehicle or make riding the car almost impossible.
For this reason, it is recommended to have a spare crankshaft sensor in cars, on which the owners regularly overcome considerable distances along the highway. It is also necessary to add that the cost of the crankshaft sensor for most domestic and foreign cars is quite affordable.
As for verification and replacement, at the very beginning it is necessary to make sure that there are no foreign objects between the sensor and the disk of synchronization, as well as the clearance itself in permissible framework. In parallel, it should be taken into account that the device can be sound and workable, and the cause of failures is the dirt on the DPKV core.
Read also
Purpose and features of the work of the DPRV (camshaft position sensor) on gasoline and diesel engine. Check and replacing the sensor with your own hands.
Modern car, whether it is a foreign car or domestic "VAZ", it is very difficult to imagine without the abundance of various electronic systems. All of them in their functionality are divided into several categories. This can be an engine control system, gearbox, chassis and interior. Regarding the first time one of the components of such a system is the crankshaft sensor. "VAZ-2110" and its subsequent models are equipped with a conveyor. Well, let's consider the features of this electronic device.
Characteristic
It should be noted that on VAZ-2110 cars, the crankshaft sensor can be referred to as a NTT sensor or DPKV. But no matter how abbreviations did not designate it, of course, it is the only detail whose fault can lead to a complete stop of the operation of the internal combustion engine.
Crankshaft position sensor assignment
The main function of the DPKV is the synchronization of the operation of the ignition system and fuel injectors. Thus, a failure in the operation of this element can lead to an unstable functioning of the car injection system. The principle of operation in filing signals about the position of the crankshaft to the electronic control unit is concluded.
Device and classification
Despite the fact that the Vase crankshaft sensor may have a different design, the principle of its operation is based on a single electromagnet effect. That is, the signal is formed without direct contact with the crankshaft.
The most common type of DPKV is induction. This item consists of two main elements - the magnetized rod and a special winding. Induction sensors read information from the crankshaft. When a metal tooth takes place near DPKV, the EMC is in the latter, which the electronics is captured. On the "VAZ-2110" the crankshaft sensor is installed precisely induction type.
Also DPKV can be based on the Hall effect. Such a sensor consists in approximately the same way as induction, however, when the metallic shaft is passed near it, resistance changes in the device's winding. Constructively, it consists of a permanent magnet.
It should be noted that the first, and the second types of sensors are used to read the data from the crankshaft pulley. It can be gear and all-metal. In the last embodiment, there is a special excavation that passes by the sensor and generates a signal that is fed to the electronic motor control unit of the vehicle.
Where is installed on the "VAZ-2110" crankshaft sensor?
And the DPKV is located on the bracket near the pulley of the generator drive. This location of the device is very inconvenient for replacement, so the long wire with the connector is additionally connected to it. Usually its length is up to 70-80 centimeters. What this detail looks like you can see in the photo on the right.
When replacing the DPKV, the gap between the pulley and the sensor itself is exposed. Ideally, the distance between the disk of synchronization and the core is no more than one and a half millimeters. This value may vary depending on the location of the pads between the DPKV and the landing socket.
Crankshaft sensor "VAZ-2110": malfunctions and signs of breakdowns
Can this detail be broken? Usually on "VAZ-2110" the crankshaft sensor rarely fails. However, with its faults (or incorrect work, the red check engine "Check Engine" lights up, which is literally translated as "Check the engine". At the same time, code 19 or 35 appears in the controller error memory.
Of course, the worst case when the crankshaft sensor fails is the impossibility of normal engine start. In this case, we can say that DPKV does not work at all. The solution of this problem can only be a complete replacement.
Very often the crankshaft position sensor fails gradually. At the same time, the driver feels a significant drop in the power of the engine, "failures" begin and even detonation at high revs. Also, the symptom of malfunctions of such a device can be floating (unstable) motor turns on the crankshaft sensor sometimes becomes the cause of increased fuel consumption. Although it is possible, the problem is hiding in a weak contact or in the cutting of the wires, but in any case this item must be checked.
Diagnostics of the device
Checking the performance of the crankshaft position sensor is performed using a special tester. All diagnosis is to measure the resistance of the DPKV winding. Normal values \u200b\u200bmust be between 800 to 900 ohms. If the data obtained is not suitable, you need to check the quality of the contact connection. If it did not help, a new item is purchased. The replacement of the crankshaft sensor is so simple that even a novice motorist can cope with it.
Sometimes it happens that the malfunction of this device is caused by mechanical damage to the winding. Often it happens when performing any repair work in the processing space of the car or between the teeth of the pulley and the DPKV is formed by any foreign object. In this regard, many motorists recommend carrying a spare position sensor in the trunk. The cost sensor is very small, but it is a colossal importance for the engine.
Sensors, control systems, tracking schemes, executing and transmitting electronic chains ... Twenty years ago, these terms so could not be associated with the design of the car, today without them it is impossible to even present a modern car. We like it, or not, and it will have to put up with them, because part of the sensors when out of failure can simply compensate for the lighting of a light bulb, and without some sensors, the machine will not move from the place. The latter just belongs to the crankshaft position sensor, the simplest device, without which the entire electronics turns into a bunch of rubbish.
In the photo - Crankshaft sensor VAZ 2110
What is the crankshaft sensor
It can be called in different ways - and the sensor of the upper dead point, and the crankshaft position sensor, synchronization sensor, but this is the only magnetized piece of iron in a cape-housing that can immobilize the car. Its main task is to accurately determine the moment of filing the spark pulse to the contacts of the spark plugs. This sensor is the reference point for the operation of the ignition system and the electronic fuel injection control system. An incredibly simple device is just on the magnetized core wound with lacquer insulation and all this is placed in a plastic case. Sometimes it is poured by a two-component resin, sometimes they are simply plugged into plastic. This is an ordinary inductance sensor, which works on the simplest principle.
As soon as the task is to calculate the position of the crankshaft, then the disc-synchronizer is fixed to it, which can be combined with a clutch flywheel or with a pulley on the front end of the crankshaft. Since the core is magnetized, it reacts a pulse to any movement at its surface of the metal object. Such objects began to teeth pulley crankshaft. When rotating the crankshaft, the flywheel or pulley flashes in front of the sensor to the teeth, constantly generating electrical impulses. These pulses are fed to the electronic control unit and based on their frequency block calculates the moment of the spark. Only if the impulse would be constant, no possibility to find out the true position of the crankshaft would be impossible. Therefore, it is necessary to remove one or more teeth to remove the electronic control unit to understand that the pass in the stream of impulses is therefore the position of the crankshaft when it is necessary to serve as a spark on the candle. For example, there would be 60 teeth on the crankshaft on the crankshaft pullee, but two of them are cut out to inform the ECU about the upper dead point on the first and fourth cylinders. In fact, the piston is located in the VMT when the peak of a twentieth tooth flies near the sensor, counting from cut out.
Pulses from the sensor are used not only by the ignition system, but also by some other systems. Depending on the model and the car brand, the sensor depends more or lesserly:
The position sensors of the crankshaft of this type, inductive, installed on most cars - Renault Logan, VAZ 2110, 2111, 2112, Kalina, Opel Astra, Priora, Renault Sandero, Klio, Lagoon 2, Hyundai Santa Fe. The crankshaft position sensor operating on the Hall effect is extremely rare. Such sensors are most often found to determine the position of the camshaft, and the principle of operation they have several different.
Signs of the crankshaft sensor fault
The main difficulty in determining the malfunction of the injection engine control system is that symptoms of failure of many sensors and systems can be almost identical. The same is observed with the crankshaft position sensor. Since it affects almost all major engine life systems, then signs can manifest itself very blurry. There is nothing to break in the sensor in principle, so only cleanliness of the surface can affect its performance, and not too much. Well, the wiring in the most running cases may not have a good contact. But we will check it. In the meantime, with these symptoms, an unstable operation of the crankshaft position sensor is quite possible:
- Unstable idling, turns are floating by themselves and cannot be adjusted. Although the electronic control unit itself can be guilty here, not to mention the fuel pump, ramp and nozzle state. Yes, and the ignition check does not hurt.
- The loss of speakers, failures in the transition to high speed, dips during acceleration and even smooth acceleration.
- The disgusting start of the engine, and the machine may not want to start it into the cold or hot. Not to mention the cases when the engine, it would seem, without visible for that reason, simply refuses to start. This means that the sensor is completely dead and the engine control system does not understand that the crankshaft is scrolled. For Ecu Val simply stands still.
No difficulties, the sensor can easily check on the diagnostic computer or an error code appears on the on-board computer that says that the sensor is to blame. On the VAZ 2114, for example, on the last 2109, 2115 and other cars with this motor, the error code is 0335 or 0336. But this does not mean that the sensor died. Could trite to break through the wire. As far as it makes sense to engage in the diagnosis of the sensor with your own hands, each will solve himself, since the price of the new sensor is 2110 and all cars of the VAZ with injection motors are 155 rubles for 2016. Not such big money so as not to afford to have such a luxury in the garage about the reserve.
Video: Crankshaft position sensor. Check
For the sake of sports interest, you can check the sensor yourself, although its work on science is checked using an oscilloscope. A tester will need for verification. You can first check the resistance - for most sensors it should be within 700 ohms. You can also check the sensor on the elementary inductance. To do this, connect the tester conclusions to the sensor wires, the multimeter is set to 200 mV mode. In this case, the sensor must respond to the appearance of any metal subject to voltage change.
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4 years ago
Thanks to the crankshaft position sensor, the ignition system and fuel supply system into the car engine are simultaneously. Simply put, the controller, managing a fully injection injection system, determines the moment of submission of the command on the nozzles so that they feed the fuel to the cylinders, and also it sets the moment of the spark in the corresponding cylinder - everything is only due to the sensor alone.
Note!
You will need a minimum set of tools: wrench "on 10", and better the knob and a cape head, a multimeter to test the sensor for performance.
Sensor location
The sensor itself is fixed on the bracket located on the oil pump lid, it looks at the teeth of a large pulley of the crankshaft (indicated by the blue arrow). In the rear of the sensor, the conclusions are located to which the wire shoe is connected, which comes from the controller (indicated by the red arrow in the photo).
When to change the sensor?
Without time it clogs, because it is downstairs, and dirt appears on his face. Remove it from the car and carefully brush. Clean the front of the sensor from the dirt. If it does not help, replace the sensor to the new one. Otherwise, power will decrease significantly and detonation will be accelerated (details here: ""). However, do not change the sensor without checking it, because such symptoms belong to other sensors (for example, the knocked out pump phases, the swords are poorly fixed to the places, the tension roller does not cope).
Replacing this sensor on VAZ 2110-VAZ 2112
1. The sensor is the electronic component of the engine, the wires are connected to it, so before starting the work, de-energized the car network at the car: throw off the terminal minus with the battery (the procedure is described in the article: "Replacing the battery on cars").
2. Now press the retainer locking the wiring on the sensor, and disconnect it (photo 1). Act carefully, in practice, there are enough cases of failure breakage due to excessive exposure. Next, use the key to reject the bolt, thanks to which the sensor is attached on the bracket (photo 2) and remove the sensor. On the instrument, turn on the voltmeter function with the measurement limit to 200 mV and connect the wires that go from it to the sensor conclusions (photo 4). Taking a flat blade scolding, very quickly try to rush it above the front of the sensor. The device will start issuing testimony in the area of \u200b\u200b0.3 V. nothing happens? - Replace the sensor.
Note!
It is more correct to check the sensor for goodness when it is installed on the machine to the sensor conclusions are connected by special. Device, start the car and watch jumps on the device. Consider the machine will not start, the battery do not plant much.
3. If it turns out that the sensor is subject to replacement, be sure to take exactly the same: identical shape and length. After installation, check the set of special probe, the distance between the face of the sensor and the crankshaft pulley teeth, this distance should be within 1 ± 0.41 mm.
Additional video:
Below are video materials on the topic of today's article, we recommend familiarizing yourself.
