Replacing the crankshaft sensor on a VAZ 2114 with your own hands

02/28/2022 18,044 VAZ 2114

Author: Ivan Baranov

Many drivers are not even aware of the existence of such a device as a crankshaft position sensor (CPS). But, nevertheless, its importance cannot be overestimated. The VAZ 2114 crankshaft sensor is a miniature device that transmits data about the position of the crankshaft to the power unit computer. The correct functioning of the injectors responsible for supplying fuel and the ignition system of the VAZ 2114 depends on this small part. It rarely fails. But if you are planning a long trip, it would be good to have a spare one.

The shaft position sensors on the VAZ 2114 differ not only in their design, but also in their operating principle.

Inductive-type DPKVs have a metal rod with a magnet, which is needed to magnetize it. A copper winding is wound over the rod. The principle of its operation is to give a signal when a steel object is nearby.

DPKV of the second type works according to a different scheme. Inside such a device there is a hall sensor. If you bring a metal object to it, its state will change.

Pulse-type devices are also often used. They generate pulses of a specific frequency. If there is a metal object nearby, the generation frequency will also change.

[Hide]

Description of the crankshaft sensor

So what is this controller and what is its purpose? Where can I find the device in order to replace it? What are the main signs of a device malfunction? We will give answers to these questions below.

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.

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

Signs of trouble

If the controller located on the oil pump fails, the driver will not be able to start the engine. In the event of a breakdown, only replacing the regulator will solve the problem of the inability to start the motor. It should be noted that on 8- or 16-valve engines the problem of complete failure of the controller does not often occur; as practice shows, in most cases the problems accumulate.

So, what are the signs of a faulty DPKV:

1. Reduced engine power when driving. When the driver presses hard on the gas, power loss may be felt. Note that in carburetor engines this can occur if the accelerator pump does not operate correctly.
2. In some cases, engine detonation may occur, especially if it operates at high speeds. Sometimes this problem can be caused by the poor quality of the fuel used.
3. It may be difficult to start the engine.
4. Another sign of a malfunction that requires replacing the crankshaft sensor on the “ten” is increased gasoline consumption (the author of the video about replacing the crankshaft sensor on the domestic Lada is the IZO channel)))LENTA).

Functionality check

If you decide to check the serviceability of the sensor yourself, treat this procedure responsibly and carry it out correctly. On a VAZ 2114 car, the crankshaft sensor is checked in several ways.

1. Using a multimeter. The serviceability of the induction sensor can be assessed by the resistance of its coil. In a working product it is 500-700 Ohms.
2. On the multimeter, set the measurement limit to 200 millivolts, connect the probes to the terminals (where the standard wires are connected). Pass a steel object several times in front of the core. The working sensor will “see” the metal and there will be voltage spikes on the multimeter display. If there are none, replace the part.
3. But the most accurate results when checking are provided by an oscilloscope. When using this device, one hundred percent results can be guaranteed; it reads all the information from the sensor while the engine is running. It can be observed on the device screen. The engine, during tests, should operate at different speeds. They start with eight hundred revolutions, then two thousand, and raise it to six thousand. If the lines (on the device screen) are of different lengths, you need to look for the cause of the malfunction. Remove dirt, check the pulley for defects, and so on.

Oscillogram of a working sensor

Oscillogram of a working VAZ 2114 crankshaft sensor

It should be noted that these verification methods work on all VAZ models with DPKV. If you have any doubts about your own abilities, then contact the service. Thanks to specialized equipment, the result will be more accurate, and the check will not take much time.

Remove from the engine

The malfunction has been identified. Let's start eliminating it. Let's look at this operation using the VAZ 2114 as an example.

Turn off the car ignition. We open the hood, fix it firmly, and visually determine where the VAZ 2114 crankshaft sensor is located. Before removal, it is advisable to remove all contaminants in the area where it is located. Next, carefully remove the block with wires from the connector.

Connector DPKV VAZ 2114

Using a “10” wrench, unscrew the fastening bolt.

Removing the crankshaft sensor on a VAZ 2114

Removing the DPKV VAZ 2114

After dismantling the sensor, it is advisable to check the generator drive toothed pulley for defects. Since its damage can introduce errors into the operation of the entire system.

After we are convinced that there are no defects of any kind, we proceed to assembly. The seat must be clean. We install the new part in place and fasten it with a bolt (the tightening torque should not exceed 8-12 Newton meters). In this case we use adjusting washers. They are sold complete with a new sensor. Thus, using a special probe, we ensure that the gap between the pulley and the sensor core is one millimeter. The permissible error is 0.41 millimeters in the larger direction.

Diagnostics

The diagnostic procedure for a device consists of checking the resistance parameter of its windings; an ohmmeter is used for this. If, as a result of diagnostics, the tester showed values ​​other than 550-570 Ohms, this indicates a failure of the controller. To prevent damage to the sensor, its installation site must always be kept clean. In addition, it would be a good idea to check the integrity of the wiring; very often the quality of the connections plays an important role. As for repairs, the DPKV cannot be repaired; the regulator can only be replaced with a functional one.

Sorry, there are no surveys available at this time.

How to check DPKV

When it is suspected that the crankshaft position sensor is malfunctioning, it is necessary to dismantle the device and inspect it.

Causes and symptoms of sensor malfunction:

• the device body is cracked due to mechanical stress, the core or contacts are damaged;
• due to scuffing of the journal, the opening in the bearing has increased;
• the surface of the components is damaged, scratches or cracks appear;
• the sensitive element has failed over time;
• the crankshaft liners are melted;
• a manufacturing defect appeared;
• the gap between the crankshaft and the liner has increased;
• the working holes wear out or the key is cut off.

Replacement Guide

How to replace the crankshaft position sensor on a VAZ 2110? To complete the task you will only need a 10mm wrench.

Step-by-step instructions for this process are presented below:

1. First you need to turn off the ignition. Just in case, to prevent possible short circuits in the vehicle's on-board network, you can disconnect the negative terminal from the battery.
2. Then open the hood and find the location of the controller. You need to disconnect the connector from the regulator.
3. Using a 10mm wrench, you need to unscrew the bolt that secures the device. Remove the DPKV from its installation location on the oil pump cover, and then replace it with a new regulator. Before installation, you must be sure that problems in the operation of the power unit are not caused by poor quality wiring. Otherwise, the replacement will not give the necessary results. Clean the connector and installation location of the device from dust and dirt, this will avoid possible malfunctions in its operation in the future.

Dismantling and installation

So, you have determined that the DPKV has failed. Therefore, there is nothing left to do but replace it. To do this you will have to dismantle the old device.

1. Turn off the ignition and open the hood. Securely secure it to avoid unpleasant blows to the back or head.
2. Remove any dirt from around the sensor so that it can be removed and visually inspected.
3. Disconnect the wiring block from the corresponding connector.
4. Using a 10 mm wrench, you can easily remove the crankshaft sensor mount.
5. Remove the damaged device.
6. At the same time, be sure to check the generator drive timing pulley. It is not uncommon for damage to appear on it, due to which the device cannot operate correctly. These teeth cause error codes to appear on the on-board computer.
7. If there are no defects and nothing prevents the installation of a new device, begin assembly.
8. If necessary, clean the installation site of the DPKV.
9. Place the new measuring device in the socket and tighten the mounting bolt. In this case, do not exceed a tightening torque of more than 12 N m.
10. Be sure to use the adjusting washer, which is already supplied by responsible sensor manufacturers.
11. Using a special feeler gauge, make sure that there is a gap of 1 millimeter between the pulley and the DPKV core.
12. The gap error can be no more than 0.41 millimeters in the upward direction. Under no circumstances should the gap be less than the required 1 mm.

Maintain clearance

Price issue

As we have already noted, VAZ 2114 owners are not often faced with the need to change the DPKV. But always be prepared for such troubles.

You don’t have to spend a lot of money purchasing a new sensor. The price depends on the store and region where car parts are sold. On average, a recreation center costs about 200-400 rubles.

Replacement at a service station is still a cost around the cost of several sensors. Therefore, think about who exactly will do the work - you or the car service specialists.

Repair of VAZ crankshaft sensor wiring - A116.RU Kazan

Repair of wiring connector of the Crankshaft Position Sensor (CPS) VAZ.

Quite often, the cause of the car jerking and its complete stop is an open circuit of the DPKV (error P0335 or P0336)

A wire break most often occurs at the base of the sensor connector. The connector needs to be replaced with a new one. In the article we will look at how to do this most correctly, and you will also learn how you can repair the old sensor connector if you suddenly cannot purchase a new one.

Everything was done indoors, so the part with attaching the restored connector to the car wiring is for demonstration, that is, you need to do everything the same, only not on the table, but on the car).

We cut off the connector from the car wiring at a distance of 3-5 cm from the connector. We remove the plastic wire retainer (to be honest, it doesn’t really prevent the wires from breaking at the root - so you don’t have to put it back if you’re too lazy...)

Using a wire with a diameter of 0.8 mm (we used a piece of welding wire from a Kempy semi-automatic machine) we press the fixing stops of the contacts through a special groove (it’s enough just to insert the wire until it stops).

Use the remaining wires to pull the contacts out of the connector. They come out quite tightly due to the rubber seals. We open the contact petals around the rubber seals and break off the old wires at the root.

We find a couple of pieces of wire 10-15 cm long, suitable in cross-section and color. Don't forget to put rubber seals on the wires.

We strip the ends of the wires by 3-4 mm and carefully solder them to the contacts. We used a 25-watt soldering iron, POS-61 solder and active flux based on zinc chloride.

Kinds

Depending on the design and operating principle, there are three main types of crankshaft sensors. Let's look at the features of each of them in the table.

Crankshaft sensor wire VAZ 2110

All about the crankshaft sensor VAZ 2110, VAZ 2111 and VAZ 2112

What does the crankshaft sensor do?

Symptoms of a faulty crankshaft sensor

Where is the crankshaft sensor located?

Replacing the crankshaft position sensor VAZ 2110

How to check the crankshaft position sensor yourself

Signs of a malfunction of the crankshaft sensor VAZ 2110 and 2112. Accurate diagnosis

Symptoms of a problem

Your car may indicate in different ways that there is a problem with the DPKV or just the DC. Let's name the main ones.

1. It is not uncommon for dirt to form on the end of the sensor, causing the device to transmit information incorrectly.
2. At idle, the engine behaves unstable.
3. The power level of the power unit drops noticeably.
4. The revolutions can spontaneously increase or, conversely, fall.
5. During acceleration, dips are noticeable.
6. When you turn on the ignition, problems are felt and it can be difficult to start the car.

If you discover such problems, most likely you will have to replace the DPKV. In addition, we are talking about a consumable that will not cost you a fabulous amount of money.

This crankshaft position meter cannot be repaired.

Additionally, we advise you to pay attention to the error codes that appear. Codes with designations 0336 and 0335 indicate that a wire break may have occurred near the connector. This problem can be easily determined by visual inspection.

Location

Many VAZ 2114 owners prefer to carry out repairs with their own hands. This allows you to save significantly.

Purpose

To control the engine and supply a spark at a certain moment and to the desired cylinder, a crankshaft position sensor is used. It detects the TDC position of the engine and then sends signals to the engine control unit, which sends a signal to the ignition module to supply a spark to the cylinder in which the compression stroke occurs.

The sensor is a rather important element and if it fails, the ECU will not be able to determine which cylinder needs to be supplied with spark and fuel.

Design

The sensor is a plastic part inside of which there is an electromagnetic element that operates on the Hall effect. A sensitive part protrudes from the sensor, which directly works with the master disk. The VAZ 2115 uses a generator drive pulley as a master disk, which has teeth for determining the position of the crankshaft by a sensor. The sensor is attached to the engine housing through an eyelet, which is pressed against the ebb on the engine using an M6 bolt. The sensor's power supply is shielded; this is necessary so that the signal reaches the control unit without interference.