Speedometer diagram for VAZ 2110 injector

Schematic electrical diagrams, connecting devices and pinouts of connectors

The speed sensor is an element of the vehicle's electronic control system. It depends on its readings how much fuel will be supplied, how much air will bypass the throttle valve when idling, and what the speedometer readings will be.

The speed sensor of a VAZ car is based on the use of the Hall effect, that is, a stream of pulses is transmitted from the device to the car's ECU, the frequency of which is proportional to the speed of the car. Auto electronics, analyzing incoming data, selects the required idle speed and sends a signal to a device that regulates the engine idle speed, which optimizes the composition of the air-droplet mixture entering the combustion chamber, bypassing the throttle valve.

During a distance of one kilometer, the speed sensor transmits over 6000 pulses to the ECU. Based on the parameters of the time analysis of inter-pulse signals, the on-board computer transmits data to the dashboard, thereby determining the speedometer readings.

As in many other cars, the VAZ speed sensor is located in the upper part of the gearbox housing, not far from the engine oil level dipstick. You can get to it from two sides: from above, by opening the hood and disconnecting the adsorber, and from below, using the inspection hole for convenience.

Pinout DS 2109, 2110, 2112, 2114, 2115

If you understand how to connect the speed sensor, then there is the following pinout that you should follow. At the same time, it is important to understand the essence of the operation of the DS to study the circuit diagram of the sensor, which is attached to this article.

The factory speed sensor of VAZ cars is manufactured with some differences in connections to the block connector. The square-shaped connector is used in Bosh electronics systems. The circle-shaped connector is used in electronic systems such as January 4 and GM.

When connecting a sensor, you should choose devices with contact group digitization such as “-”, “A”, “+” (internal designation on the block contacts) instead of digital designations such as “1”, “2”, “3”. In addition, preference should be given to devices with a metal-type rod, since plastic rods are very short-lived.

Repair and replacement

We carry out dismantling according to the following scheme:

We de-energize the car by removing the “-” connector from the battery;
We disconnect the wire connector from the sensor and remember what their pinout is;
We unscrew the sensor itself by hand. If this doesn’t work, use key 21 or 22 (there may be design differences);
At the same time, we check how the drive feels. After removing the sensor, you need to unscrew the nut with which the drive is attached to the gearbox. You need to remove it very carefully, since if you drop the rod into the gearbox, you will have to disassemble it too. The new drive has a rubber ring, which is lubricated with transmission oil before installation.

We install new devices in the reverse order. Again, the pinout of the wires is of particular importance.

Inside the block we look at how the pinout is marked. And using a multimeter with the ignition on, we determine which connector goes to which wire.

If the multimeter shows “minus”, and you connected this wire to the plus connector, then you urgently need to change the polarity. In this regard, it is better to take the block that we recommend.

But if there isn’t one, you can use the regular one. In this case, the pinout is as follows: 1 – “”, 2 – signal output, 3 – “-”.

The drive is checked, as well as the operation in general while the car is moving, or with the front wheels hanging.

Schematic electrical diagrams, connecting devices and pinouts of connectors

How to check the VAZ speed sensor

A failed speedometer sensor in a VAZ car is easily determined - in this case, the speedometer stops working, and it may also show some signs of life, but display incorrect information.

Using a tube, pliers or other available tools, rotate the sensor axis. In this case, you should see the voltmeter readings changing: the higher the speed, the higher the voltage (from 0.5 to 10 V). If this does not happen, the sensor requires replacement.

Replacing a car speed sensor

As for its location, look for the DS in the engine compartment in close proximity to the exhaust manifold. To be honest, the place where it is installed cannot be called ideal. While the car is running, the manifold heats up. The sensor wires rub against it, which over time leads to malfunctions and short circuits. Therefore, experts recommend that the first step is to properly insulate the wiring, and also use some kind of clamps so that the wires do not come into contact with the collector. This significantly extends its service life.

If the check shows that the DS is faulty, it needs to be replaced. Repairing sensors and similar small electronic devices is a thankless task. In a garage environment, this is unlikely to be possible, and the only thing that can be done is to clean the contacts from oxidation (this can be a problem).

It doesn’t matter whether you have an injection car or a carburetor with a Europanel - the connection of the speed sensor to the instrument cluster is identical.

Replacing the VAZ speed sensor: step-by-step instructions:

Drive into the pit - it will be more convenient to work from below - and wait until the engine cools down.
Turn off the vehicle's power by removing the cable from the negative terminal of the battery. Do not close the hood after this, this will provide you with lighting.
Locate the speed sensor on the transmission. Clean it and everything near it with a rag to remove any dirt.
By pressing the spring clip, disconnect the wire block from the sensor.
Dismantle the sensor itself by unscrewing it counterclockwise - with your fingers or an open-end wrench to “22”.
Carefully, so as not to break anything, install a new part in place of the removed part. Connect the wire block to it and the procedure for replacing the speed sensor can be considered complete.

VAZ speed sensor pinout and DS connection diagram

Pinout DS 2109, 2110, 2112, 2114, 2115

How to check the VAZ speed sensor

A failed speedometer sensor in a VAZ car is easily determined - in this case, the speedometer stops working, and it may also show some signs of life, but display incorrect information.

Replacing a car speed sensor

If the check shows that the DS is faulty, it needs to be replaced. Repairing sensors and similar small electronic devices is a thankless task. In a garage environment, this is unlikely to be possible, and the only thing that can be done is to clean the contacts from oxidation (this can be a problem).

It doesn’t matter whether you have an injection car or a carburetor with a Europanel - the connection of the speed sensor to the instrument cluster is identical.

Why the speedometer does not work on the VAZ 2110 injector

All instruments on the VAZ 10 that indicate the speed of the vehicle are pointers, and signs of a malfunction are determined by deviations from the norm of the speedometer needle. If the speedometer is faulty, the arrow when the car is moving:

does not deviate from zero, that is, does not show speed at all;
stuck in one position, does not move in any direction;
jumps, sharply changing readings, while the displayed speed does not correspond to reality.

There are other signs of a faulty speedometer, for example, the device works on a cold engine, and its readings correspond to the norm. As the engine warms up completely, the needle freezes and stops moving.

The main reason why the speedometer on a VAZ-2110 injector does not work is contamination (oiling) of the speed sensor (DS), failure especially often occurs if oil from the gearbox or engine gets onto the DS (for example, there is a leak from the valve cover of the internal combustion engine ). There are also other reasons:

the speedometer itself has failed;
the speed sensor is broken (this part on AvtoVAZ cars is not highly reliable);
there is no normal contact in the DS plug or a break (short circuit) of the wires has occurred;
The speedometer drive gears installed in the gearbox broke.

Checking the performance of the speedometer 2110

Before you start changing anything, you need to find out why the device does not show speed. First of all, they start checking with the speed sensor, since most often all malfunctions are associated with it. We inspect the DC for contamination, see if there is a break in the wires.

If the electrical part of the sensor is faulty, the Check Engine light on the instrument panel lights up. During computer diagnostics, if the sensor is faulty, the scanner displays error code P-0501, P-0501 or P-0503. Another error is detected by the on-board computer installed on the car.

There are also other signs of a faulty DS:

at idle, the internal combustion engine is unstable, and the engine may stall at low speeds;
fuel consumption has increased.

It is quite difficult to check the electrical circuit from the DS to the speedometer on a VAZ-2110 injector car, so here it is better to seek the help of specialists.

The DS drive gears located in the gearbox may also break. The drive itself is easy to check - you need to unscrew the two bolts that secure it with a 10th key and perform a visual inspection of this mechanism.

Purpose and principle of operation of the speed sensor

The functionality of a device such as the VAZ 2110 speed sensor is based on the use of the so-called. Hall effect, i.e. a stream of pulses is transmitted from the device to the vehicle's ECU, the frequency of which is in direct proportion to the speed of the vehicle. The electronic center of the car, analyzing the incoming data, selects the required idle speed and sends a signal to the device that regulates the engine idle speed, which optimizes the composition of the air-droplet mixture entering the combustion chamber, bypassing the vehicle throttle valve.

During a distance of one kilometer, the speed sensor, a photo of which can be seen on our portal, transmits over 6 thousand pulses to the ECU. Based on the parameters of the time analysis of interpulse signals, the on-board computer transmits the data to the dashboard, thereby determining the speedometer readings.

There is another useful function of the VAZ 2110 speed sensor, the diagram of which is presented on our resource. This is fuel efficiency. The device signals to the controller that the car is moving at a speed of 100 km/h. The throttle valve sensor transmits a signal to the controller when the driver stops pressing the accelerator pedal. The controller receives an impulse indicating the braking mode of the power plant and turns off the fuel system.

Speedometer malfunctions VAZ 2110 carburetor

On early 2110 cars with a carburetor, the speedometer needle is driven from the gearbox by a mechanical cable, and it is much easier to determine the cause of the malfunction here than in an electronic circuit. Checking the serviceability of the speedometer cable is simple: it must be disconnected from the gearbox - if the tetrahedron at its end is intact, then everything is in order in this connection.

Next, we take the tip of the cable with our fingers and try to twist it; if there are no breaks in the cable, the speedometer needle should begin to move (rise). If the vehicle rotates too freely with its fingers, the cable is most likely broken. To check the tens mechanical speedometer itself, you need to remove the instrument cluster.

Replacing the VAZ 2110 speedometer

On a VAZ-2110 with an injector, a separate device indicating the speed of the car is not sold, and the instrument cluster on 2110-11-12 is replaced as an assembly. If it turns out that the cause of the malfunction lies in the instrument panel, it must be replaced. We remove the instrument cluster (old model) as follows:

on opposite sides of the steering wheel from below, unscrew the two screws of the plastic frame;
unscrew the two top screws of the plastic frame, the frame is secured with 4 screws in total,
pushing the cover forward, disconnect all the plugs from it;
unscrew the screws securing the instrument panel, they are located on the sides of the combination;
we pull off the instrument panel from the upper latches and move it towards the steering wheel;
at the back of the instrument cluster, disconnect the two plugs;
We take out the dashboard, now all that remains is to install a new part and reassemble it in the reverse order.

Replacement

Now to the question of how to make replacements. To do this, we dismantle the old device and connect a new one in its place. Your steps look like this step by step:

If you couldn’t avoid using a new device with inconvenient markings 1, 2 and 3, then remember an important pinout detail:

Source

Replacing the VAZ 2110 speed sensor

The main cause of speedometer problems is the failure of the speed sensor, and if the DS is faulty, it must be replaced. It is not difficult to replace the sensor on a VAZ “ten”; almost any driver can do this work independently. The operation is especially simple on a car with an 8-valve engine. Let's start replacing:

we place the car on a flat horizontal plane; you can do without a pit or a car lift;
we find the sensor - it is located on top of the gearbox housing, not far from the oil dipstick;
to disconnect the plug from the sensor, press on the locking bracket;
Using a 22mm key, we unscrew the sensor itself counterclockwise, often the DS is unscrewed by hand;
When installing a new part, we use manual force; it is not recommended to tighten the DS with a wrench, as you can break the part or strip the thread.

When installing, we put the connector in place, it should click into place, and the work can be considered complete. With sufficient skill, this operation is completed in 5-10 minutes.

Car owners often encounter a problem when, after replacing the sensor, the speedometer needle begins to “lie” - show the wrong speed. It should be noted that several types of DS have been developed for the VAZ Tens, and they have different catalog numbers. When purchasing, you should pay attention to the number of the failed sensor, and you must purchase a new part only with the same marking.

Speed sensor malfunctions

Typical symptoms of failure of the electronic speed sensor may be:

lack of electrical signals - error code P0500;
intermittent electrical signals with EMF - error code P0503;
the arrow moves chaotically in different directions, incorrect readings or other types of incorrect operation of the speed indicator;
unstable operation of the engine at idle: interruptions, floating speed, etc.;
increased consumption;
power failures, when you press the pedal the engine does not “pick up” speed, etc.

There can also be several reasons for problems with the Electronic Speed Sensor, for example:

power supply circuit break,
oxidation of contacts,
breakage of connecting wires or wear of the mechanical drive of the sensor.

If the odometer suddenly refuses to work, and the speedometer works jerkily, or “lies” regarding speed and mileage, these are direct indications that the speed sensor or its drive is failing. It is also possible that there is a problem in the electrical circuit, the connector is failing, the pinout is mixed up, if the operation of this system has been interfered with, etc.

In addition, an indirect indication of a malfunction may be that the car stalls at idle (although there may be other reasons for this).

Naturally, if the speedometer begins to give deliberately false readings, and the “CHECK ENGINE” light is on on the dashboard, then the reason is the speed sensor.

Some recommendations

The search for the cause of the speedometer's inoperability should begin with an external inspection of the DS and the wires going to it. Wires often break in close proximity to the plug.
If the speed sensor is covered with a layer of dirt or oily, you need to remove it, wipe it, reinstall it and check the speedometer readings again. Perhaps after this the instrument needle will again begin to show speed normally.
If you cannot figure out the problem yourself, you should contact an electrician at a car service center.

Speed sensor

Carburetor models use a cable mechanical speedometer system, so there is no speed sensor. It's simply not needed.

How to change the speed sensor on a VAZ 2110

Any car is equipped with a system that shows the speed of movement and mileage (distance traveled). It is the speedometer, which is a device for determining instantaneous speed, that makes it possible to find out what the maximum speed of the VAZ 2110 is.

Speed sensors are installed only in fuel-injected cars; where carburetor engines are present, they are not present. This device is responsible for the supply and consumption of fuel, setting the ignition timing, and monitors the quality of the combustible mixture. All data is transmitted to the electronic control unit, which controls the injector.

Before the advent of sensors, mechanical speedometer drives were installed on each carburetor engine. On VAZ 2010 cars produced before 2006, mechanical drives are installed. Newer cars manufactured after 2006 are equipped with electronic sensors.

Symptoms of a problem

The problem may be that the connection diagram is broken, there are disturbances in the electrical circuit, or the connector does not work. In addition, the pinout of the speed sensor, which was mixed up during the assembly process, often becomes a problem.

An indirect sign of a malfunction is that the car stalls when idling.

You, as a driver, will easily notice the presence of incorrect indicators on the speedometer, and also pay attention to the warning light that requires you to check the engine (Check Engine). If such phenomena are detected, there is no doubt - the speed sensor needs to be replaced.

Troubleshooting

To begin troubleshooting the problem, you first need to find the device. From the photo you can determine how the speed sensor on the VAZ 2110 looks externally.

Ears for fastening

As for its location, look in the engine compartment in close proximity to the exhaust manifold. They say frankly that the place where it is installed cannot be called ideal. It's all about the collector. While the car is running, the manifold heats up. The sensor wires rub against it, which over time leads to malfunctions and short circuits.

Therefore, experts recommend that the first step is to properly insulate the wiring, and also use some kind of clamps so that the wires do not come into contact with the collector. This significantly extends its service life.

Having checked the device visually and not determining the presence of breakdowns, this tells us that the element itself is faulty. This problem can be solved by replacing it.

Where is the speed sensor located?

In a two-wheeler, the speed sensor is located on the gearbox. In more detail, you should look for it in the engine compartment, in the engine compartment, next to the exhaust manifold - between the flexible shaft and the speedometer drive. The sensor is installed vertically.

The photo shows the location of the sensor on an eight-valve engine

Preparatory activities

Proper replacement of the speed sensor on a VAZ 2110 implies the mandatory purchase of a new device that meets all the requirements of your car.

Connector

Basically, when purchasing a device, follow two basic rules.

Choose a sensor whose connectors inside the block are marked -, A and +. Usually the designations 1, 2 and 3 are used there. There is no fundamental difference between them, it will simply be much easier to carry out the pinout with such markings. It is the incorrect connection that often becomes the reason that you have to seek help from a service station. And these are completely different financial costs.
The rod on the element must be made of metal. If the stem is plastic, it will last you about 6 months. It is not in your best interest to replace regularly. But don’t forget to check the metal rod for play, correct rotation, and the presence of a washer in the package.