Chevrolet Niva camshaft sensor

The phase sensor signal is used by the controller to organize sequential fuel injection in accordance with the operating order of the engine cylinders

The phase sensor is installed on the cylinder head boss.

The operating principle of the sensor is based on the Hall effect.

There is a special pin on the engine camshaft.

When the pin passes opposite the end of the sensor, the sensor outputs a low-level voltage pulse (about 0 V) ​​to the controller, which corresponds to the position of the piston of the 1st cylinder in the compression stroke.

If a malfunction occurs in the circuits or the phase sensor itself, the controller stores its code in its memory and turns on the alarm.

The vehicle's self-diagnosis may not detect the error.

In this case, the car engine will have difficulty starting, especially after a long period of parking. The "CHECK ENGINE" warning lamp will be illuminated.

Removing the phase sensor

Disconnect the pickup harness connector.

Using a 10mm wrench, unscrew the bolt securing the phase sensor and remove the phase sensor.

Checking the camshaft sensor

To check the phase sensor, dismantle it and connect the wiring harness block to the sensor.

From the side where the wires enter the block, we insert two pieces of wire into its sockets corresponding to the outer terminals, so that contact appears between them and the tips of the wires.

We connect the tester probes to the pieces of wire.

Having turned on the ignition, we bring a steel rod several times to the end of the sensor.

In this case, for a working sensor, the device should record abruptly changing voltage values.

To test the sensor, you can assemble a simple circuit.

Connect the sensor and bring the screwdriver shaft to the working part of the sensor.

The lamp or LED should light up when brought to the working part of the sensor.

Installation of phase sensor

Before installing the sensor, lubricate the surface of the phase sensor O-ring with engine oil.

Install the phase sensor on the cylinder head, screw in and tighten the mounting bolt. Bolt tightening torque 3.8. 8.2 Nm.

Chevrolet Niva. Phase sensor

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Characteristics of the camshaft sensor

The operating mechanism of this part is based on the Hall effect. What does this device do? Chevrolet camshaft sensor controls the gas distribution device, its inclination according to the crankshaft. The signal is received by a system that controls the flow of gasoline and the operation of spark plugs.

The operation of the camshaft sensor is based on monitoring the potential difference between the carriers of the amount of electricity, and its work is associated with another crankshaft position analyzer. camshaft sensor operates under the influence of the Ampere force acting on a current-carrying conductor in a magnetic field. Using a magnet, it creates a magnetic field that changes under the action of a special iron tooth on the camshaft wheel.

Thus, the part tells where the piston of the internal combustion engine cylinder is located, and the strokes of the cylinder cycle are performed one by one.

Chevrolet Niva. Phase sensor

How can you indirectly determine that the sensor

phase has failed.

Camshaft sensor (check)

For diagnostics: Eml327 V1.5 Bluetooth OBD2 adapter Diagnostic program for Android: .

What happens if the sensor fails? The indicator turns on and the device that regulates the supply of the mixture of gasoline with air stops the dosed supply and the reserve mode is activated. Instead of sequentially supplying each cylinder according to its firing cycle, fuel is supplied to all simultaneously. Gasoline is used sparingly. In this case, the part is faulty and the owner should purchase a new sensor.

For each car, depending on the design features, the engine model, and its type, the sensor is located in different places. If you need to replace it, you should carefully study the engine diagram.

Replacing the sensor on a Chevrolet Niva

Replacing this part is relatively easy. The on-board computer registers errors such as P0340, PO342, PO343.

Error P0340 appears on the self-diagnosis system if the crankshaft rotates. Code P0342 - the camshaft electrical circuit shows a low signal and code P0343, accordingly, shows a high signal. It is necessary to check the wiring - for this purpose it is good to use an oscilloscope or other testing device. If the power supply is not interrupted, then the problem is in this node. Broken wiring may cause the sensor to not see the camshaft.

Mechanical specialists, even if the sensor is in good working order, still recommend changing it every 4-5 years - such prevention will protect you from breakdowns and accidents, especially since the part is very cheap despite its importance. After all, the semiconductors inside the sensor react poorly to temperature fluctuations - remember your school physics course. The work will take from 3 to 15 minutes, depending on your technical skills. It is clear that only original engine parts are purchased. Good luck to you and good travels!

There is a special offer on our website. You can get a free consultation with our corporate lawyer by simply submitting your question in the form below.

The main signs of a malfunctioning camshaft sensor, what symptoms can be used to judge a breakdown

Checking on your own Of course, qualified repairs and diagnostics of the sensor will be carried out only by service station specialists.

Error 0340 DPRV. Elimination of Causes. Self-diagnosis without a scanner. Myth or not? Phase sensor. VAZ NIVA

It is especially important to take into account that in some cases, in order to check the effectiveness of the CMR sensor signal, special equipment may be needed, without which it is difficult to determine the cause of the malfunction. There are also car models where it is located in a special compartment under the hood.

What are the real signs of a malfunctioning camshaft sensor? This question worries many amateur motorists. Not a secret,…

If you see signs of a malfunction of the camshaft sensor while there is current in the circuit and wires leading to the device, then we continue checking as follows:

If there is voltage, then the wiring is fine.

Parts and consumables:

Unfortunately, it was not possible to carry out diagnostics for a long time and we had to endure it. Well, when it happened, an error code appeared - P, incorrect signal from the phase sensor. Or the same thing - the camshaft sensor. If you experience a problem like this, check the sensor! It is located on the front of the block head, at the top, below the cover, on an inclined boss and is secured with one bolt.

Error 0340 DPRV. Elimination of Causes. Self-diagnosis without a scanner. Myth or not? Phase sensor. VAZ NIVA

The first type is magnetic; it reproduces its own alternating current, which has two wires; it is also called a sine wave. The second type, based on the Hall effect to obtain a digital signal, uses an external power source and already has three wires.

Replacing the sensor on a Chevrolet Niva

Replacing this part is relatively easy. The on-board computer registers errors such as P0340, PO342, PO343.

Error P0340 appears on the self-diagnosis system if the crankshaft rotates. Code P0342 - the camshaft electrical circuit shows a low signal and code P0343, accordingly, shows a high signal. It is necessary to check the wiring - for this purpose it is good to use an oscilloscope or other testing device. If the power supply is not interrupted, then the problem is in this node. Broken wiring may cause the sensor to not see the camshaft.

Mechanical specialists, even if the sensor is in good working order, still recommend changing it every 4-5 years - such prevention will protect you from breakdowns and accidents, especially since the part is very cheap despite its importance. After all, the semiconductors inside the sensor react poorly to temperature fluctuations - remember your school physics course. The work will take from 3 to 15 minutes, depending on your technical skills. It is clear that only original engine parts are purchased. Good luck to you and good travels!

There is a special offer on our website. You can get a free consultation with our corporate lawyer by simply submitting your question in the form below.

Tools:

There may be several sensors in a car. Main symptoms of malfunction Sooner or later, this element becomes unusable. The design of any camshaft position sensor is extremely simple: To find it, you need to look in the vehicle operating book. Some vehicles have multiple Hall sensors.

VAZ replacement of phase sensor, symptoms of malfunction.

You can also often hear another name for it: Signs of malfunction The electronic engine control unit monitors sensor readings. It is difficult to independently detect a breakdown in an electronic device, but there are several signs that indicate the sensor is not working properly or is broken. A sharp increase in fuel consumption is a sign of a malfunction of the camshaft position sensor. The first sign is a sharp increase in fuel consumption.

Every driver knows how much gasoline or diesel fuel his car consumes per kilometers driven. Look at the multimeter display.

Check the indicator with the specification specified in the car repair manual. In most cases you will see a fluctuating signal between 0.3 and 1 volt. To do this, set the multimeter to “constant current” mode. Connect the other wire of the multimeter to the power wire of the sensor.

Compare the multimeter readings with the specifications specified in the machine's repair manual. Compare the multimeter readings to the specifications found in your vehicle's repair manual. If the reading on the multimeter is lower than indicated in the repair manual or the data is completely missing, then most likely the camshaft sensor has failed.

Description

On engines with a carburetor fuel system, the role of the DPRV is played by the distributor. The design of the injector is different, the system was parallelized, injection and ignition were done in pairs.

During systematic operation, the household equipment wears out and becomes unusable. The process of self-replacement is not at all difficult. The task is feasible for a car enthusiast without technical equipment maintenance skills.

Repeated restart of the engine is the first sign of a malfunction of the DH (DPRV).

To determine which cylinder is on stroke, the electronic engine control unit controls the position of the camshaft using DPRV (SMR)

Data from the sensor is extremely important for setting and dosing fuel, sparks in the combustion chamber, and injectors. The camshaft sensor directly affects fuel consumption, acceleration dynamics, and the amount of emissions in the exhaust gases.

The latter, based on the analysis of indicators, adjusts the fuel supply, ignition timing, and spark frequency.

• The magnetic controller produces its own alternating current. The design has two contacts;
• The Hall effect controller has one contact, powered from a third-party source.

Signs of DPRV malfunction:

• Unstable engine operation at idle speed;
• After stopping, the engine starts again;
• Increased fuel consumption;
• Power reduction;
• Passive acceleration dynamics;
• On the dashboard there are system error indicators (see photo);
• The gearbox can be locked in one position until it comes to a complete stop and the ignition is turned off. Single or cyclic action;
• The car moves jerkily;
• The maximum speed of the car is limited to 65 – 85 km/h;
• Periodically the engine stalls;
• Misfires when turning on the ignition;
• Inability to restart the engine.

Frequent causes of premature wear of the controller:

• Natural factor due to long-term use;
• Mechanical damage to the controller housing;
• Open circuit;
• Short circuit of contacts;
• Sensor breakage due to impact, accident;
• Malfunctions of the electronic engine control unit.

Access to the equipment for carrying out maintenance from below, having previously dismantled the metal protection of the oil pan.

DPKV transmits signals to the electronic control unit (ECU) in real time and also reports the direction and speed of the crankshaft.

Based on the data received, the ECU makes a decision to reduce or increase the frequency, enrich the fuel mixture, or change the ignition angle.

Speeds

The Chevrolet Niva speed sensor helps to determine exactly how fast the car is moving. The received information is transmitted to the speedometer. In addition to this, it also performs such functions as:

• Controls fuel consumption
• Displays information on the dashboard
• In cars with automatic transmission, it is part of the system that is responsible for engine control.

If for some reason it fails, then further movement becomes difficult. The causes of failure may be contamination or oxidation. If the device stops working, first of all you need to check for the following problems:

• Contacts have oxidized
• There was a break in the electrical wiring
• Wire insulation is damaged
• There are mechanical damages

Diagnostics can be done both visually and using a multimeter. To do this, the sensor is removed, after which you need to connect the plus to the contacts, and the minus to the ground of the car. We switch the multimeter to power measurement mode and if it shows that the voltage has increased, then the element can be considered faulty.

To change it you need to disconnect the battery. When the car is de-energized, we find the sensor which is located on the rear cover of the transfer case. Disconnect the terminal from it and unscrew it with a wrench.

The Niva Chevrolet phase sensor operates on the Hall effect principle. It works as follows: there is a special pin on the camshaft and when it runs parallel to the end of the sensor, the sensor begins to transmit a voltage pulse to the existing controller, which should have the same position as the piston of the first cylinder in the compression position. That is, it is needed so that fuel injection and the order of operation of the engine’s cylinders correspond to each other.

In the event of a failure, it or its chain controller writes a special code into its memory and activates the alarm. And to remove it you need:

• Disconnect the battery
• Remove the decorative casing from the engine
• Disconnect the connector from the sensor
• We unscrew the bolt that secures it to the cylinder block.
• We remove the part from its seat
• Install the new one in reverse order

More information about testing and troubleshooting

Connecting scanners or computers equipped with special software is the best option for identifying most faults. The main thing is to choose software that matches the current car brand.

If the camshaft sensor is faulty, the following error options appear:

• P0339. In this case, intermittent signals are received from the sensors.
• P0343. The signal is at a high level, but it exceeds the norm.
• P0342. The signal level for the electrical circuit is too low.
• P0341. The compression/intake strokes of the cylinder-piston group differ from the current valve timing.
• P0340. There is no position locator signal.

Most buyers do not have scanners or laptops with software. Therefore, a simpler method is to check with a multimeter.

In total, there are no more than 3 stages in such diagnostics:

1. The wiring is subjected to visual inspection. Next, the circuit is rung to check for a break.
2. The outgoing current is measured at the control contact of the sensor. There is definitely a malfunction if there is something wrong with it.
3. Check functionality by approaching a metal object.

During the first stage, the most important thing is to make sure that the wiring remains intact and that the contact of the connecting block is reliable enough. Conducting cables should be inspected additionally to ensure that there is no melting of the insulation or cracks or kinks. Using a multimeter it is easy to make calls and search for a break. An additional responsibility is cleansing from oxidation. This is the first sign of problems.

After diagnosing the entire system, you can move on to the sensor itself. Standard alligator clips are easily replaced with wires with needles. The main thing is to correctly determine the location of the two power contacts and the third wire going to the controller. The voltage between the bus ground and the contact is checked by turning on the power. The signal should remain at normal level.

If the values ​​obtained are higher or lower than normal, the sensor must be replaced.

The part is completely removed from the engine in order to perform final diagnostics and make a final decision.

Camshaft

The Niva Chevrolet camshaft sensor creates stable engine operation. The work is based on the Hall effect. Thanks to it, the tilt of the gas distribution device is controlled according to the crankshaft. The system that controls the operation of the spark plugs and the flow of gasoline receives a corresponding signal. It works based on monitoring the potential difference of the required electricity, and is associated with the operation of the crankshaft position analyzer. Simply put, it informs the location of the piston of the internal combustion engine cylinder, while all cylinder stroke cycles occur sequentially. If it stops working, the device and indicator turn on, thanks to which a mixture of air and fuel occurs, dosing is suspended and the reserve mode is activated. Replacement is recommended every five years. If it is faulty, the on-board computer will display the following errors, PO343, PO342, PO340.

Temperature

The Niva Chevrolet temperature sensor helps determine the ambient air temperature. Located on the lower part of the bumper on the driver's side. If it stops working, you can replace it, for this you need:

• Disconnecting the battery
• Find the sensor itself
• Carefully pull it out of its seat
• Let's take him outside
• By pressing the latch, disconnect the plug from it
• Install the new one in reverse order

Air flow

The air flow of the Niva Chevrolet is controlled using a hot-wire sensor, which is located between the hose of the intake pipe and the air filter. The magnitude of the direct current depends on the direction and amount of moving air that passes through it. In the event of a system malfunction, a code is stored in memory and the alarm is activated.

To replace, you need to prepare a 10mm wrench and a screwdriver and do the following:

1. Disconnect the connector from the sensor
2. Loosen the air pipe clamp
3. We unscrew the bolts that secure the sensor and the o-ring
4. Installing a new one

Removing the phase sensor

1. Disconnect the negative terminal from the battery

2. We remove the decorative casing to gain access to the element we need
3. We press the block and disconnect it from the sensor

4. Unscrew the bolt that secures the part to the cylinder block
5. We remove the part from the existing hole in the block head

6. We change to a new element, doing all the steps in reverse order.

It is recommended to replace it every five years, even if it is working properly. The replacement job takes about twenty minutes, everything will depend on what technical skills you have.

Oxygen

The Chevrolet Niva oxygen sensor is also called a lambda probe; it is located in the exhaust gas system on the receiving pipe. The oxygen contained in the exhaust gas interacts with it, thereby creating a potential difference at the outlet. It varies from approximately 0.1 to 0.9 V. For it to function normally, its temperature must be at least 360 degrees. For these purposes there is a built-in heating element. If the potential difference at the output is low, then the mixture begins to enrich, and if, on the contrary, it is high, then the mixture becomes depleted.

Ditonations

The knock sensor on a Chevrolet Niva is located on the top of the cylinder block; its main task is to detect unusual vibrations in the engine. Excellent sensitivity is ensured thanks to the piezocrystal plate. During vibrations, the sensor generates pulses that increase with increasing impacts. Based on a signal from the controller, the ignition timing is adjusted to eliminate detonation of fuel flares. Simply put, it controls the operation of the engine while driving at low speeds while engaging an upshift, so that the pistons, cylinder block, and crankshaft do not fail. Below is a table for replacing it:

Fuel level

The Niva Chevrolet fuel level sensor determines the remaining fuel in the tank and transmits the readings to the dashboard. It is located in the fuel tank. Its breakdown can lead to the car stopping at the most inopportune moment, so the driver will not know how much fuel is actually in the tank. Therefore, if there are problems with it, it is better to replace it as soon as possible, this can be done like this:

1. The right side of the rear seat rises
2. A fluffy rag is folded back
3. Unscrew two screws on the fuel pump hatch
4. Removing the hatch
5. Disconnect the two pipes and terminals
6. Unscrew 8 screws
7. Carefully remove the fuel pump and replace the required element

All work is done within 10 minutes.

Idle move

The Chevrolet Niva idle speed sensor ensures the supply of air to the engine during idling. When a signal is received by the ECU, the sensor moves the valve, changing the flow hole in the air valve. If it fails, it will not be possible to repair it, since it has a non-demountable design.

To replace it, you need to prepare a thirteen socket wrench, pliers and a Phillips screwdriver and do the following:

1. Unscrew the mounting bolts and remove the housing from the throttle valve
2. Disconnect the wiring connector of the engine regulator
3. Unscrew a couple of screws on the throttle body
4. Removing the regulator
5. Remove the O-ring from the existing hole.

To summarize, we can conclude that the failure of any of the above elements can seriously affect the operation of the car, therefore, in the event of a malfunction, you need to replace a new part as soon as possible. All replacement work can be carried out independently.

Main types of faults.

• Difficulty starting the engine “hot” or “cold”;
• When moving downhill, detonation occurs;
• Idle speed is unstable;
• Motor power decreases periodically;
• Acceleration dynamics are passive;
• Sudden engine stop.

Like any car part, the sensor is subject to vibration and is susceptible to contamination and oxidation. Therefore, its failure is possible from time to time. To understand the cause of the breakdown and what to do in each specific situation, the following problems should be eliminated:

• broken wiring
• the appearance of oxide on the contacts
• destruction of wire insulation
• mechanical damage to the housing or its internal components

To do this, you can carry out a certain set of measures to check the condition of the sensor. Typically, such work requires a multimeter. The sensor is removed from the seat. A positive probe is connected to the contacts. The negative one is connected to the ground of the vehicle. The multimeter must be set to minimum power measurement mode.

Sooner or later this element becomes unusable. As a rule, it fails due to the fact that the internal winding wears out, in which case the engine operates intermittently. And how worn out the sensor is can be judged by the operation of the engine. The following signs may indicate that the camshaft sensor has failed:

• The gearbox may get stuck in one of the gears, and while the engine is running, it will be impossible to unlock it. This can usually happen from time to time.
• There is a loss of speed and the vehicle moves jerkily
• There is a loss of power
• The engine stalls
• Popping noises appear in the exhaust system, dynamism is lost, misfires occur when the ignition is turned on
• Lost spark