How to check the camshaft sensor

We check and change the camshaft position sensor ourselves

This is a tool that determines the location of the timing belt, located around the corner, so that it mainly corresponds to the placement of the engine crankshaft. Control functions occur like this: it releases signals to the control system through the camshaft (often called the camshaft), by ignition or fuel injection.

It operates according to the well-known Hall principle, which is why it is sometimes called a Hall sensor. It changes the path of movement with the help of charge carriers - this is its main job.

Fixation of all this occurs when the semiconductor of the magnetic field makes its intersection. The impulse streams created as a result of such an action are transmitted through other channels after some time.

And thus the camshaft sensor determines the position of the piston compression rhythm in each VTM cylinder.

Signs and causes of malfunction

People often ask themselves the question: how to check the camshaft sensor, and what needs to be done for this? In order for the camshaft sensor test to be successful, you need to take several important steps.

First you will need to disassemble the engine, not completely, but only partially. This is necessary in order to make it easier to get to it and determine its position. The location is where the timing belt is located.
If you find a camshaft sensor, take a multimeter to perform a detailed check. Next, you will need to separate all the wires from it, and instead connect them to the output channels of the multimeter, and press the “resistance” mode.
Then you will need to take some metal object and move it at a short distance from this device. A screwdriver works well as such an item. If during this procedure the numbers on the indicator do not change, this indicates its malfunction.

Don’t get upset right away; this often happens because the gap is set incorrectly or when the sensor is dirty. Therefore, it will need to be cleaned. Most often this happens with a domestic car like the Lada Kalina.

If it seems to be fixed, but these symptoms appear, then most likely its wiring is broken.

It also happens that it does not display numbers, but instead shows error codes - in this case it will be much easier to detect the problem and immediately make a replacement.

These were a few simple ways to check the camshaft sensor, which are not difficult at all.

Instructions for checking and replacing

If the above methods failed to normalize its condition, then this part must be replaced.

There is nothing complicated in replacing, as well as in checking, since their camshaft is mounted without adjusting the gap. Thanks to this function, you can avoid mistakes when installing a new device.

If the gap is adjusted, certain standards must be observed.

If you are not sure that replacing the camshaft sensor yourself will be successful, take it to a special service center. There the replacement is made using an oscilloscope. When starting the oscilloscope, stability of data reading is observed at different engine speeds.

If you have an oscilloscope and you are confident that you can do such a procedure, do it. Just pay close attention to the changing data that the oscilloscope will show. If it shows straight stripes and there are no gaps, that's good. Because you just have to remove the old one and install a new one.

In principle, if you use this method, you need to take into account many points and features that the tester provides in order for the replacement of this camshaft part to be successful.

Since, if the indicator does not work, then, logically, the engine should not work. But technology is a delicate matter, and sometimes it malfunctions. If the sensor and built-in electrical devices do not know the location, they go into an emergency state.

And, being in this state for a long time, the sensor fails.

Video "Camshaft Position Sensor"

After watching the recording, you will find out where the camshaft sensor is located and how to replace it.

Source: http://MineAvto.ru/remont/dvigatel/kak-proverit-datchik-raspredvala-78.html

How to check and replace the camshaft sensor in a car?

All modern cars are equipped with such a necessary part as a camshaft sensor. Its main task is to issue a command so that fuel is injected into the cylinders. If the sensor is faulty, it is imperative to determine the cause of the failure and replace it.

What is a camshaft sensor, the principle of operation of the camshaft sensor

To understand the operation and principle of operation of the device, you need to know where the camshaft sensor is located. The sensor is located on the side of the pump and power steering pulleys. The sensor axis always corresponds to the direction of the camshaft axis.

The camshaft sensor is a device that ensures the normal operation of the car engine. It determines the angular position of the timing mechanism in relation to the position of the crankshaft. After this, information from the sensor goes to the engine management system to control fuel injection.

To answer the question: “What is a camshaft sensor for?” You need to understand the principle of its operation. The sensor itself contains a magnet that creates a special magnetic field. A reference point (pin or metal tooth), which is located on the master disk. It closes the magnetic gap and changes occur in the magnetic field.

The engine control unit, having received a signal from the sensor, receives data on the position of the piston of the first cylinder. After this, the control system sets fuel injection and ignition of the fuel mixture, according to the operating order of the engine cylinders.

Important! If you notice that the camshaft position sensor has failed, you need to replace it as quickly as possible to reduce fuel consumption and normal vehicle operation.

What does the performance of the DPRV depend on?

The performance of the DPRV depends on the temperature conditions. Overheating will damage it. The sensor will not work if the wires through which it transmits and receives the signal are faulty, or the reference point is broken. Damage or contamination of the sensor itself plays an important role.

Also, under difficult operating conditions (off-road driving, transporting goods), the sensor may move or, even worse, a short circuit may occur. In order to eliminate sensor failure at the most inopportune moment, diagnose it and replace it after 4-5 years.

Main sensor malfunctions and their causes

The main symptoms of a malfunctioning camshaft sensor:

the “check engine” signal comes on and driving dynamics deteriorate;
the number of revolutions increases or decreases independently;
a warm engine is unstable at idle speed;
under dynamic loads, detonation occurs in the power plant;
higher fuel consumption;
The engine does not start.

If you notice such symptoms, check how the camshaft sensor is working. It may have failed and needs to be replaced. The causes of sensor malfunction can be: failure of the disk with reference points, displacement of the DPRV installation, short circuit inside the device, overheating of the motor.

How to check the camshaft sensor

Before checking the camshaft sensor with a tester, you need to visually inspect the sensor housing and gear rotor for damage or the presence of metal shavings. This may also be the reason for its malfunction.

Important! Be sure to turn off the ignition before starting the test. After this, start disconnecting the wires from the device.

Diagnostic tool

To check the camshaft sensor you will need: a multimeter/tester, pliers and a screwdriver. The multimeter/tester will guide you to perform a detailed test of the device. It will show exactly what is wrong with the sensor itself or the wiring.

Test scheme

Before starting to diagnose the sensor, examine the connector which should have: positive, negative contacts and a contact for signal transmission.

1. Turn the ignition on and check the camshaft sensor with a multimeter. Connect the tester ground to the engine ground. The measurement must correspond to the voltage readings at the battery terminals. If the readings do not match, then the sensor's power supply circuit has failed.

2. After this, measure the voltage at the sensor ground in a similar way. The voltage should be zero.

3. Connect the positive and negative wires of the camshaft sensor. Connect the middle contact through the tester. Thus, we connect one wire of the multimeter to the signal terminal of our sensor, the other needs to be powered to the input to the control system.

4. After this, crank the engine with the starter. If the sensor is working, it will show a voltage from 0.4 to 5 volts. If the values are different, the sensor should be replaced.

If, after checking, you find the cause of the breakdown in the sensor itself, do not delay replacing it. Without it, the engine will work, but in emergency mode, fuel consumption will increase significantly, since fuel is now supplied to all cylinders simultaneously.

How to replace the camshaft sensor

If you are sure that the camshaft sensor is broken, be sure to replace it with a new one. Replacing the sensor is a simple task and you can do it yourself. It should be changed every 100 thousand km. even if it is still functional.

This is due to the fact that its “filling” does not tolerate overheating, and it constantly works with changes in temperature conditions. Before purchasing a new sensor, pay attention to the recommendations of specialists and use the parameters specified by the manufacturer.

Source: https://auto.today/bok/5983-kak-proverit-i-zamenit-datchik-raspredvalav-avtomobile.html

Camshaft position sensor: check and malfunctions

Before the advent of injection engines, engines with a carburetor needed 3 sensors. These were temperature and oil pressure sensors, as well as coolant temperature.

Moreover, the failure of any of them did not lead to the engine stopping, without considering further consequences for it now.

Plus, the car was not equipped with electronics, which simplified troubleshooting, maintenance and repair.

A modern injection engine is entirely dependent on electronics, namely the ECU (electronic control unit). To operate the control unit, the engine is equipped with a large number of various sensors that monitor the position and condition of all its components and systems.

One of them is the camshaft position sensor (camshaft position sensor). Its task is to monitor valve timing. On car models with two camshafts, two sensors can be installed.

DPRV

However, the electronics work reliably only when all the sensors are working properly and do not distort the signals transmitted to the control unit.

So for engine operation, the ECU requires data on the position of the crankshaft and camshafts, which must operate synchronously. For this purpose, the power unit is equipped with a DPKV (crankshaft position sensor) and a DPRV.

To determine which cylinder is at the end of the compression stroke, the control unit monitors the position of the camshaft relative to the crankshaft using a camshaft sensor.

Based on the readings of these sensors, the control unit gives a command to supply a spark and a certain dose of fuel through the injectors into a specific engine cylinder.

DPRV device

There are two types of camshaft position sensors:

• Induction (ID);

• Magnetoelectric (MED);

An induction type sensor consists of a magnet and a coil, which are placed in a plastic housing.

The magnetoelectric sensor is a permanent magnet, also located in a plastic housing.

Operating principle

In the ID, when a pin located on the camshaft sprocket passes past its core, an E.M.F. is created. The signal from the DPRV is transmitted to the ECU, which uses this data to supply fuel and create a spark in a specific engine cylinder.

DPRV device

The DER sensor operates on the well-known Hall effect by creating voltage pulses sent to the engine control unit to determine the cylinder into which fuel must be supplied at the moment and a spark must be created.

Malfunctions

VIEW:

• winding break;

• interturn closure;

• oxidation of terminals in the connecting block;

• damage to wires.

camshaft sensor

In MED:
• problems in the electrical part;

Common sensor malfunctions include:

• presence of moisture in the connector;

• short to ground;

• inappropriate gap between sensor and pin;

• mechanical damage.

Examination

The integrity of the cable and screen is checked; the insulation of the wires often dries out and shorts.

For a comprehensive check, an oscilloscope is required.

checking the DPRV with a multimeter

You can use a multimeter to check the resistance of the winding to make sure it is not shorted or open.

So on the “male” of the sensor between the 1st and 2nd legs of the device it should show 13 Ohms, and about 3 Ohms between the 2nd and 3rd legs. However, not all sensors have leg numbers.

Consequences of DPRV malfunctions

If the camshaft sensor fails, the ECU will have to take data only from the DPKV, and since the crankshaft rotates twice as fast as the camshaft, the control unit will command the injectors to fire twice as often (for each crankshaft revolution).

This in turn will lead to increased fuel consumption, unstable engine operation, poor starting, jerking while driving, loss of dynamics and power. Plus, the toxicity of exhaust gases will increase and failures will appear during the self-diagnosis of the system.

If a malfunction occurs, “CHECKENGINE” will appear on the instrument panel and the computer will store the DPRV error code in its memory.

There may be cases of sudden engine stop with simultaneous failure of the power steering and a decrease in the effectiveness of the brakes, which is especially dangerous when the car is in motion. Also, if the sensor fails, the automatic transmission may be blocked in one of the gears. After stopping the engine and restarting, the automatic transmission is unlocked, although this may be repeated cyclically.

On average, the cost of a camshaft sensor on the market varies from 500 to 4000 rubles, depending on the model and manufacturer. And the cost of replacement in a specialized service is from 1000 to 2000 rubles.

Source: https://avtoexperts.ru/article/datchik-polozheniya-raspredvala-proverka-i-neispravnosti/

How to check the VAZ-2114 camshaft sensor with a multimeter: photo

Many motorists have encountered the fact that the camshaft sensor, or in other words, the VAZ-2114 phase sensor, has failed. There can be many reasons for this phenomenon, but as a rule it is wear and tear. Not all car enthusiasts are able to diagnose this sensor, although there is nothing complicated or abstruse in the process itself.

Video review of the symptoms of a camshaft sensor failure on a VAZ-2114:

Operating principle of the sensor

General view of the camshaft sensor

This meter is similar in principle to a Hall sensor .

Reading occurs using a special camshaft gear that has no teeth. The missing elements are located in such a way that when this gap hits the sensor, the first piston is at the dead center, at the top or bottom.

Phase sensor operation diagram

A signal is triggered and transmitted to the engine's electronic control unit when the sensor hits the missing teeth. In turn, depending on the received indicator, the ECU adjusts the ignition angle. Thanks to the installation of such a system, Samara-2 engines have become more efficient and popular.

Location of the sensor under the hood of the VAZ-2114

The camshaft sensor on the VAZ-2114 is located near the air filter, at a very close distance from the cylinder head. This meter location is almost always standard for other cars in the injection group.

Camshaft sensor location

The main reasons for sensor failure

Before proceeding directly to the diagnostic process, it is necessary to find out the causes of the malfunction of the VAZ-2114 phase sensor.

So, let's move directly to the most direct and indirect indicators:

Electrical circuit of the sensor

Check Engine on the dashboard indicates that a malfunction has occurred. In this case, the engine starts without waiting for a response from the camshaft sensor, and the ignition system works based on the latest indicators.
Increased consumption of the fuel mixture can also serve as an indirect indicator of a malfunction of the air flow control valve.
The car begins to lose power and dynamics as a whole.

Checking the operation of the camshaft sensor

So, when all the questions have been considered, you can proceed directly to diagnostic operations.

The first method is manual diagnostics . How is it carried out? Let's consider this issue step by step:

We dismantle the sensor.
The first diagnosis is visual. It is worth inspecting the condition of the case, the presence of damage and cracks. Pinout of the sensor wires

Multimeter to help

Now you need to check the contact group using a multimeter. First, we inspect the contacts for the presence of moisture, and then “ring” them. If the tester does not respond, then the sensor is faulty.

Diagnostics is carried out as follows: the “minus” probe of the tester is connected to the left contact on the sensor, and the “plus” to the central one. Next, we bring the metal plate to the sensor. A change in the voltage reading on the sensor will be immediately visible on the multimeter.

Checking the sensor using a multimeter

The second diagnostic method is to connect to the vehicle's electronic control unit. In it, when the Check Engine appears, error codes remain that indicate a malfunction. There are two errors associated with the phase sensor, namely:

FAZ sensor error 0340 - shows that the ECU does not receive a signal from the camshaft sensor. You should check the breakage and condition (oxidation) of the contacts before damaging the sensor itself.
Error 0343 - high signal level of the camshaft sensor. Most often this is damage to the wiring from the ECU to the sensor, or breakage and oxidation of the terminals, or an unreliable connection. Operating principle of the camshaft sensor

Oscilloscope

The third method of diagnostics is an oscilloscope. Using this device, you can almost immediately determine whether the camshaft sensor is faulty. But, unfortunately, not every car enthusiast has this device in his arsenal.

Checking with a computer or oscilloscope

conclusions

Checking the camshaft position sensor of the VAZ-2114 is quite easy and simple. Almost every motorist can cope with this task. But, it is still recommended to start diagnostic operations by connecting to the ECU and identifying error codes.

Source: http://carfrance.ru/kak-proverit-datchik-raspredelitelnogo-vala-vaz-2114/

Camshaft position sensor: location, malfunctions and testing

Problems in the operation of the DPRV can seriously threaten the safety of the driver and passengers. Imagine the situation: you are driving in heavy traffic in a large city, and suddenly the engine suddenly loses power, which leads to a significant decrease in the speed of your car. Very often it ends in an accident, because the driver driving behind simply does not have time to react.

Another option is that while driving, the engine stalls and the power steering is turned off, which is why you cannot make a sharp turn. The situation is sad and this really happens. In other situations, you simply leave the house to go to work, and the engine does not start at all.

This article will discuss the main symptoms of a DPRV malfunction. You will also learn where the camshaft sensor is located and how to check it yourself. But first, let's try to figure out why it is needed at all.

What is camshaft position sensor (camshaft position sensor)?

The cylinder head of the power unit contains 1-2 camshafts. They are equipped with special blades responsible for controlling the intake and exhaust valves. The block also contains a crankshaft, which drives the camshaft through gears, a timing belt, or a timing chain.

To determine the working cylinder, the engine ECU analyzes the rotating position of the camshaft in relation to the current position of the crankshaft. This is exactly the information that the DPRV reports.

The control unit uses the received data to correct the operation of the fuel injectors and spark formation.

This means that fuel economy, engine efficiency and the level of harmful emissions depend on the performance of the camshaft sensor.

The inductive sensor produces an AC signal and is easily identified by its two wires. But the Hall sensor needs additional power to create a signal, so another wire goes to it (three in total).

Important! The camshaft position sensor functions in harmony with the crankshaft position sensor.

Problems that a faulty camshaft sensor can create

Malfunctions of the DPRV can lead to various problems. It all depends on the specific car and the breakdown of the sensor itself. Most often, motorists mention the following symptoms of a malfunctioning camshaft sensor:

Transmission locking at one speed. To remove the blockage, you have to turn off and start the engine again. The phenomenon can appear at certain intervals.
Significant reduction in engine power. For example, it is often impossible to accelerate a car above 55-60 km/h.
The engine may suddenly stall.
If DPRV malfunctions begin while driving, the car may jerk, and engine power drops noticeably.
Misfire, difficult starting or engine choke, poor dynamics.
Sometimes a failed camshaft position sensor simply blocks the formation of a spark, so the car cannot be started at all.

What leads to malfunctions of the DPRV

Like any element of the car, the camshaft sensor at some point stops working. For example, this occurs as a result of wear on the internal part or wire.

Depending on the type of sensor used, engine operating problems vary.

As soon as the “brains” of the car detect a malfunction in the operation of the DPRV, the Check Engine icon will light up on the instrument panel, and a diagnostic fault code will be stored in the memory of the control unit. This will make it easier to find the problem in the future.

Camshaft sensor errors (codes)

P0340	There is no signal from the camshaft sensor (open circuit)
P0341	Invalid signal value DPRV
P0342	Low signal level at the input of the DPRV circuit
P0343	High signal level at the input of the DPRV circuit
P0344	Unstable DPRV signal

Location of the DPRV

The location of the camshaft position sensor varies depending on the specific engine. As a rule, it is located somewhere in the cylinder head area.

It is necessary to inspect the upper part of the timing chain or belt, or pay attention to the rear of the cylinder head. Some manufacturers “hide” DPRV in special compartments.

Sometimes a car's power unit may be equipped with not one, but several sensors.

If a visual inspection does not bring any results, we advise you to study the operating instructions for your car. If you don't have a printed publication at hand, look up information about the location of the camshaft sensor on the Internet.

Troubleshooting DPRV

If the Check Engine indicator on the panel has already come on (it may not be lit constantly, but may appear periodically), you just need to read the fault code using a diagnostic device. If you do not have such a device and it is impossible to buy it, you need to contact a specialist.

After receiving the exact fault code and decoding it, we recommend performing several simple tests. The presence of one of the above DPRV fault codes does not always indicate that the sensor must be replaced. Sometimes the source of the problem is damage to the wiring, connector, etc. It is quite possible to fix such problems on your own.

But to check the functionality of the camshaft position sensor itself, you need to perform several steps. Of course, it is difficult to check the signal without special equipment. But checking the camshaft sensor with a multimeter will provide basic information.

First, visually check the condition of the sensor connector and the wires that go to it. Make sure there is no dirt, oil or rust that could cause problems.

Check the wires for damage. Sometimes problems are caused by broken wires, poor connections, or defects in the insulating layer caused by exposure to elevated temperatures.

The DPRV wires should not come into contact with the high-voltage wires of the ignition system.

After that, we pick up a digital multimeter; it “knows how” to check the value of alternating and direct current (AC and DC, respectively). But you need to obtain information in advance about what these indicators should be for the sensor used on your car.

Some sensors have connectors designed so that you can connect additional wires to them to read data with a multimeter.

If this is not possible, try disconnecting the DPRV connector and connecting thin copper wires to each terminal of the connector. After this, install the connector in place so that two wires protrude from its body.

Another option is to pierce each of the wires with a needle or pin (do everything carefully so as not to short the wires!). After such a diagnosis, damaged areas of insulation should be well wrapped with electrical tape to prevent moisture from getting inside.

Checking the two-wire camshaft position sensor:

If your car uses an electromagnetic DPRV, switch the multimeter to AC mode.
Another person must turn the ignition on by turning the key in the lock without starting the engine.
Voltage should appear in the circuit. Connect one of the multimeter probes to ground (any metal component of the engine), and connect the second one in turn to the camshaft sensor wires. The absence of current on all wires indicates a problem in the wiring that goes to the sensor.
Ask the person in the car to start the engine.
Touch one multimeter probe to one wire of the DPRV connector, and the other to the other. Values will appear on the device screen, which should be compared with the operating readings given in the car’s operating instructions. As a rule, the readings on the screen vary within 0.3-1 volts.
The absence of a signal indicates a malfunction of the camshaft sensor.

Checking a three-wire DPRV:

Identify the power, ground and signal wires (use the repair instructions), and then check the integrity of the wiring that goes to the sensor. The multimeter must be switched to DC mode.
Another person must turn on the ignition without starting the engine.
We connect the black probe of the multimeter to “ground” (any metal part of the engine), and the red probe to the power supply wire of the DPRV. The results obtained should be compared with the data in the operating instructions.
An assistant must start the engine.
Touch the red probe of the multimeter to the signal wire of the DPRV, and connect the black probe to the ground wire. If the sensor malfunctions, the voltage will be lower than stated in the repair manual. Sometimes the multimeter does not show anything at all, which also indicates a sensor failure.
Remove the DPRV and check the element for mechanical damage or contamination.

Below is a video that clearly demonstrates how you can conduct such tests. In some cases, the electrical circuit is working properly, and the sensor also gives correct readings during tests.

The question arises: why do errors and problems appear in engine operation? Sometimes the causes are related to other engine components. Errors may appear due to a loose timing belt or a faulty tensioner. Because of this, the DPRV will transmit the wrong signal.

Camshaft Position Sensor Testing

Cost and replacement of the camshaft sensor

If the test results finally convince you that the DPRV is faulty, it must be replaced. On many cars, changing the sensor is very simple. It all comes down to disconnecting the electrical connector, unscrewing just one mounting bolt, removing the old one and installing a new sensor.

On other cars, you have to remove several engine components at the same time, otherwise you will not be able to gain access to the sensor. To assess the possibility of replacing the DPRV yourself, we advise you to study the corresponding paragraph in the repair manual for a specific car.

The cost of a camshaft sensor usually ranges from $30-$100.

Results

At the beginning of the article, we mentioned the unpleasant consequences that can result from a breakdown of the DPRV. If you find at least one of the signs of a malfunction of the camshaft position sensor, we advise you to diagnose the problem as quickly as possible.

Otherwise, you might just end up standing in the middle of the road. Start by reading the fault codes stored in the ECU memory and, if necessary, check the sensor itself. Now you already know how to do this using a regular digital multimeter.

Very often you can solve the problem yourself without spending extra money on diagnostics and replacement.

Source: http://autofakty.com/datchik-polozheniya-raspredvala-raspolozhenie-neispravnosti-proverka/

Malfunctions of the camshaft position sensor

The camshaft position sensor, also known as a phase sensor, also known as a phase sensor, written in English as CMP, is used to determine the angle of the camshaft position in a certain period of time. The DPRV sensor can be magnetic, optical or Hall effect.

The content of the article:

Where is the camshaft sensor (DPRV) located?

The location is different on different engines; basically, the sensor that determines the angular position of the camshaft is mounted next to the cylinder head. Also, depending on the make and model of the car, it can be located either on the right or on the left.

The sensor is small in size, so you need to look for it. It can also be in protected parts of the electrical wiring. The DPRV can also be mounted on the rear of the engine.

And some car manufacturers, such as General Motors, have special compartments for such a sensor.

How does the camshaft sensor work?

Based on the principle of operation, DPRVs are classified into 3 types:

magnetic dprv;
optical dprv;
dprv Hall.

A magnetic or induction camshaft position sensor works because a metal tooth is constantly moving in a magnetic field. This sensor has two outputs.

The operating principle of an optical sensor works by emitting a beam of light from a source, which is tracked and recorded by reception and interruption by a photocell.

A Hall effect sensor monitors changes in the magnetic field around it. Hall-effect DPRVs have three outputs. The Hall effect is also called Hall voltage.

The most rarely used camshaft position sensors are optical ones. Don’t be surprised if the car has more than one or even two DPRV sensors, this is also possible.

The principle of operation of a Hall sensor is that it detects changes in voltage that crosses its magnetic field. The sensor structure contains a piston magnet and a semiconductor element, which records voltage changes.

If the magnetic field does not change, then the sensor will not detect any changes. The magnetic field will only change if there is any metallic element in that environment.

The notches or teeth on the camshaft are precisely metal elements that change the magnetic field.

As was already mentioned above, the DPRV is also called a phase sensor. This name comes from the fact that the sensor records the cylindrical phases of intake and exhaust.

What are the reasons for the malfunction of the DPRV?

If the camshaft position sensor fails, the injector will fire for each crankshaft revolution, that is, twice as often.

Symptoms or signs of a broken sensor:

Fuel consumption increases significantly.
The engine operates asynchronously while driving, that is, it jerks while moving, drives jerkily, and loses speed. The engine may stall as if it has run out of gas. Also, sometimes the car cannot reach a high speed, more than 60 km/h. Cars are equipped with speed sensors. Find out what causes problems with their operation and how to check speed sensors.
On certain brands and models of cars, if the DPRV is faulty, the gearbox may stall. The way out of a locked gearbox is to restart the engine. If this happens constantly, then you have definitely exited the CMP operating mode.
When diagnosing yourself with a scanner, malfunctions may occur.
The spark may also disappear and the engine may not start.
The check light comes on at idle, but goes out at high speeds.

Such reasons for a non-working sensor are shown on the instrument panel with the corresponding icons. When the DPRV (SMR) is not working, the control unit will record the incorrect operating mode and issue a specific error code. To decipher error codes, you can download the application to your phone or tablet and find out what exactly this error code means.

Here are the most frequently encountered errors:

P0365 means there is no signal in the camshaft position sensor circuit.
P0344 warns that the signal supplied by the sensor is weak and intermittent.
P0343 The signal supplied by the CMP sensor is too high.
P0342 says the DPRV single level is too low.
P0341 The valve timing does not correspond to the state of proper engine operation.
P0340 There is no signal from the sensor at all.
P0300 stands for a violation of ignition cycles in the ignition system (ignition is often skipped).

Factors influencing the occurrence of reasons indicating a non-working condition of the camshaft position sensor:

Signal wires are not connected to the sensor.
There is moisture in the sensor connection.
The signal wire touches ground (some metal object in the car).
The signal wire is open and torn off.
The signal wire closes to the on-board network.
The sensor insulation is broken, the shielding shell or harness is broken.
The sensor power cord is torn or damaged.
The power cables are not connected correctly.
The high-voltage wires of the ignition circuit are faulty.
The engine control unit is not working correctly.
The gap between the sensor and the mark is not in accordance with the norm (the gap is too large or too small).
The camshaft gear “beats”, that is, it has an exceeded standard of end runout.
There are metal shavings on the DPRV body.

How to check the camshaft position sensor

If a problem is detected in the camshaft sensor during diagnostics, it is necessary to check the sensor for proper operation. This is done using a multimeter or voltmeter.

The check is usually carried out in the following ways:

checking the sensor connection to all three wires (signal wire, +12 V power, “-“ power);
if there is voltage supply and ground to the sensor, you need to start the car engine and check the pulse of the signal wire;
checking the plug for the presence of oxides, water may have entered and the contacts have oxidized;
checking the signal wire often reveals the problem of a non-functioning sensor, since the wire is located next to the motor and is exposed to heat;
checking the resistance of the sensor, for this you need to set the multimeter to the 2000 Ohm position, connect it to the sensor terminals, the resistance value should be from 0.55 to 0.75 kOhm (kiloOhm);
checking the insulation resistance of the sensor between the core and contacts of the 1st and 2nd blocks using an Ohmmeter or multimeter. The resistance value should be more than 20 MOhm (megaohm) at a voltage value of 500 Volts.
checking with a voltmeter or multimeter in the position of measuring direct voltage.

To do this, you need to disconnect the plug and connect the alligator clips or needles of the measuring device to the terminals on the sensor.
Next you need to turn on the ignition.
We connect the positive wire of the tester to the positive terminal of the sensor, the negative wire to the car body.
The Volts value should be the same as on the battery.

Next, we connect the positive wire of the voltmeter to the negative terminal of the sensor, and the negative wire also to the ground of the car.

The Volts value of the “mass” should be zero.
After checking the “+” “-“ wires, connect them as expected, and pass the third wire (signal) through a multimeter. To do this, connect one needle of the tester to the signal output on the engine, and the other to the signal wire on the tester (you will have to expose the signal wire a little).
Next, turn the ignition key and crank the starter. When the starter rotates, a properly functioning sensor should show voltage fluctuations from 0 to 5 Volts. If there is no voltage, then replace the DPRV with your own hands; to do this, you just need to disconnect the wire plug and unscrew the bolt. When installing a new sensor, do not overtighten it; the tightening torque for the camshaft sensor should be 10 Nm (Newton per meter).

How to replace the DPRV sensor with your own hands

When installing a new sensor, do not overtighten it; the tightening torque for the camshaft sensor should be 10 Nm (Newton per meter).

Source: https://autostuk.ru/neispravnosti-datchika-polozheniya-raspredvala.html

Checking the camshaft sensor

Modern cars are becoming more intelligent every year. Whatever is not stuffed into them - it’s easier to say what is not in them. Machines have become very smart, literally.

A huge number of auxiliary electronic devices are carefully controlled by the “brains” of the on-board computer through sensors located in various parts of the car. We will talk about one of these devices.

We will learn how to check the camshaft sensor , find out its location and basic principles of operation, and also list typical problems.

DPRV – camshaft position sensor

In general terms, this is one of the most important devices responsible for the stable operation of a car engine, from the name of which you can understand that it controls the position of the camshaft or, as it is also called, the cam shaft at a certain point in time.

By ensuring the accuracy of the gas distribution of the fuel-air mixture entering the engine cylinders, as well as exhaust gases, it essentially controls the entire operation of the engine.

The information received by the on-board computer is necessary for the fuel supply system and for ignition, without which the car simply will not move and will not even start.

The Hall sensor, as it is also called, consists of a magnet connected to the main recognition system, and by closing a tooth on the camshaft, it transmits information in the form of a pulse to the electronic control unit of the car. Thus, the on-board computer is aware of the initial position of the piston, which allows it to accurately inject fuel and ignite it at the right moment when starting the engine.

Signs and causes of sensor malfunction

It is clear that visually and independently you will not be able to determine if the sensor has failed, but you can calculate this using the following signs:

unexpected excess fuel consumption;
on-board electronic systems notify about malfunctions;
the indicator on the dashboard lights up;
The operating temperature of the motor increases.

To carry out high-quality replacement and repair, you will have to go to a service center. On your own, you can only verify the presence of purely mechanical damage and/or changes.

Any adequate test of this sensor is carried out with an oscilloscope, which will transmit information to the tester and show all possible faults.

And yet, you can check and even replace this sensor not only in a service center, but also with your own hands, having at least an ordinary voltmeter.

Self check

Unfortunately, you won’t achieve an extremely accurate check, but you can do something. First, check the voltage of the entire electrical circuit of the car and the wires going to the sensor, in particular.

To do this, turn the ignition key, closing the circuit, having previously removed the wires from the sensor itself, and if there is no voltage at the contacts of the removed wires, then there is a problem in the electrical circuit or at the ends of the wires going to the sensor.

Secondly, if there is voltage in the electrical circuit and contacts, connect one voltmeter wire to the signal contact of the sensor, and the other to its power supply.

If the rotation shows absolutely no changes on the voltmeter, then go to the store for a new one, because this sensor has failed. The sensor is replaced according to the instructions for the car, but it is still better to entrust this work to specialists.

Source: http://NashiKolesa.ru/pod-kapotom/kak-proverit-datchik-raspredvala