The speedometer is one of the most irreplaceable devices, on the correct operation of which not only safety, but also the life of the driver and his passengers can depend. If the speedometer stops working, any motorist will immediately feel its lack. Moreover, this is not only unpleasant for you, but also dangerous for other road users. For example, a malfunction of the speedometer can cause an incorrect choice of the speed of entering a turn and, as a result, a traffic accident. In addition, you can get a solid fine from a traffic police officer for.In any case, if the speedometer does not work (including the VAZ 2110), it should be repaired immediately. And today we will talk about the reasons for the breakdown this device and methods of solving them on the example of the tenth "Lada".
Why does the speedometer not work on the VAZ 2110? The reasons
By cars domestic production this component can fail for several reasons. The most probable of these is contact oxidation. This is perhaps the most commonplace and simple reason, which can be eliminated in just 5-10 minutes. To do this, you just need to remove and clean the contacts, and then put them back in place.
In addition, the wire itself, or rather its deformation, can become the cause of speedometer malfunctions. When viewed visually, it may appear intact (insulating winding without cracks or tears), however, the inner part (cores) may be torn. In this case, it is necessary to make a "continuity" of the wire. This is done using a special tester.
If the speedometer does not work on a VAZ 2110 (or another model of a car of the tenth family), it is possible that you have broken slots that turn the cable of this element. It may be such that everything goes out of order with it, but this happens exclusively on electronic panels.
Also, a malfunction of the speedometer can be triggered by a breakdown itself.In this case, you should purchase new part and install it in place of the old one (more detailed instructions and the description will be considered a little below). So, if the speedometer works, then the conclusion is obvious - the problem was hidden in the sensor. If you find that the speedometer on the VAZ 2110 does not work after repair, see if you forgot to connect the clutch.
Sensor operating principle
The operation algorithm of this device is as follows. When the wheels of the machine are rotating, the controller receives a short signal from the speed sensor, which, in turn, is proportional to the speed of the tires. The principle of this part is based on the Hall effect.
What to do if the speedometer does not work on the VAZ 2110?
How to replace the device yourself? It is very easy to change this part. Another thing is to get to the speedometer sensor. This is where difficulties arise. In order not to get confused in the nuances, we will consider in order how to replace with domestic cars VAZ of the tenth family.
So, if there is new part proceeding to the replacement. The first step is to de-energize on-board system car, that is, remove the negative terminal from the battery. Be careful: sometimes it can spark, so in order to avoid unpleasant sensations we work in rubber gloves. Next, you should find the speedometer sensor on the gearbox. On "tens" it is located between the speedometer drive and the tip. Next, disconnect the block with the wire from the sensor. In this case, it is necessary to remove it additionally. After that, unscrew the device from the drive with a 22 key. Now we are faced with the task of installing a new part. The main thing here is to get into the center of the drive with the rod of the new sensor. After that, you can safely connect everything, tighten it and start operating.
Pay attention to the stock
Note also that if the stem breaks, you will have to disassemble the actuator. This is done with a 10 mm key. If the drive is stuck, you can try to throw on a large key and gently move it left and right. Next, we lubricate the rubber ring of the new rod with oil and install it in place of the old one. On this question “why the speedometer on the VAZ 2110 does not work” can be considered closed. As you can see, the work is not very dusty and difficult, so almost every driver can handle it.
Conclusion
So, we found out why the speed sensor may not work, and how to repair the VAZ 2110 speedometer by installing new elements along with the rod.
Remember that a non-working speedometer poses a great danger to the driver, which can lead to the most unpredictable consequences. Knowing all the rules for repairing and replacing sensors, you can protect yourself from possible emergencies.
We wish you good luck on the road and as few such troubles as possible!
Incorrect readings of the speedometer in the car can cause a traffic accident, for example, the driver will not be able to correctly calculate
corner entry speed, or will move at a speed hazardous to road or weather conditions.
Modern injection vases, in particular, the 2110, the manufacturer equips with an electronic speedometer, which, like many other things, tends to break. The speedometer does not work in different ways, it happens that it is alive only until the engine warms up to a certain temperature, and then refuses to function, it happens that the arrow starts to "roll" along the scale or "freeze" in one position. What determines the occurrence of such malfunctions, and what problems of the device lead to the failure of the speedometer on the VAZ-2110 car?
The speedometer itself is on dashboardwhich often breaks down measuring instrument it is necessary to change completely, since the manufacturer does not supply its individual parts and devices for sale. The speedometer displays information received from the vehicle speed measurement sensor, which is installed in the gearbox housing. The torque readings are transmitted to the speed sensor using gears that are mounted on the secondary shaft of the gearbox. Using a block, a wire is connected to the speed sensor to the connector of the dashboard.
Reasons for incorrect operation of the speedometer
Considering the reasons why the speedometer on the VAZ 2110 does not work, it is worth noting that there are many of them, the most common is the oxidation of contacts. This is the most commonplace, simple and common cause of failure. To eliminate this, it is necessary to remove the dashboard and thoroughly clean all the contacts, then check their reliability and install the panel in its place. You can do this yourself, without contacting the service.
You can also look for another fairly common reason for the failure of the speedometer yourself - this is the chafing of the wires. When visually inspecting, damage to the wires is sometimes invisible, since the braid remains intact, but the cores under it may have breaks. To search for this malfunction, it is necessary to carry out a "continuity" of the wires using a tester, this is already more difficult.
Another problem on which the speedometer may not work is the breakage of the splines that turn the speedometer cable. There is much more work here, a lot will have to be changed.
The breakdown of the speed sensor (DS) is not uncommon. It is best to diagnose this problem with a working sensor, which is put in place of a supposedly faulty DS. In the event that the test speedometer began to work, the conclusion is obvious.
Also often after renovation works gearbox or clutch, it turns out that the speedometer does not work, everything can be simple here - check if you forgot to connect the device.
DS check procedure:
Checking the speed sensor is a rather complicated procedure, associated with diagnostics, removal and, often, with the probable replacement of the device itself. We need standard set tools, a couple of hours of free and a little patience. We are looking for the sensor in the box, it will be easier if you open the hood. We open the lid, look for a wire in the area of \u200b\u200bthe CV joint, it will just lead us to the desired sensor. We got to the device, we proceed to the procedure of checking and diagnosing.
- We remove the dashboard;
- We take out the speedometer from it;
- To check the functionality of the device, we need a drill;
- Clamp the speed sensor drive and turn on the counterclockwise rotation device;
- The engine in the car must work, we need the help of a person who will monitor the reaction of the device;
If the speedometer works during the test, then the cause of its malfunction lies in the drive located in the gearbox;
If the speedometer does not work during the check, then the speed sensor needs to be replaced.
Replacing a sensor on a VAZ 2110
If the speedometer does not work due to a faulty DS, we prepare keys for 10 and 22. The sensor is replaced on top of the engine, it is more convenient.
- open the hood lid;
- we remove the negative terminal from the battery, or the mass, which, in general, does not matter;
- then turn off all contact chips of the speed sensor;
- and then, using a 21 key, unscrew the sensor fixing nuts;
- If a stem breakage was diagnosed, then you will also have to remove the actuator, unscrew the stem itself with a 10 key.
Everything, in principle, is still simple, the only thing is to try to be careful, since it is very easy to slip the rod into the gearbox, believe my experience.
In the process of installing the VAZ 2110 drive rod in its place, I strongly recommend pre-lubricating the rubber ring with oil, after that we connect the terminal block, and then check the operation of our speedometer. It works - we are happy, no - back to work.
For clarity, I suggest watching a video clip with explanations:
The speedometer is installed on any modern car, it can be different types - liquid crystal, pointer, indicator. If the device stops working, it becomes more difficult for the driver to navigate by speed, it is easier to break the speed limit.
In this article, we will look at why the VAZ-2110 speedometer does not work: the reasons for the failure, troubleshooting methods, typical malfunctions.
Types of speedometers VAZ-2110
On the VAZ-2110 car, speedometers are with electronic and mechanical drive, devices of the second type were installed on cars of the first years of production from carburetor engines (8 valves). Later, electronic speedometers began to be used on the "top ten", the torque from the gearbox to the dashboard is transmitted through the speed sensor.
All devices on the VAZ top ten, showing the speed of the car, dial, and signs of a malfunctioning state are determined by deviations from the norm of the speedometer needle. If the speedometer is faulty, the arrow when the vehicle is moving:
There are other signs of a malfunctioning speedometer, for example, on a cold engine, the device works, and its readings are normal. As the engine warms up completely, the arrow freezes and stops moving.
The main reason why the speedometer on the VAZ-2110 injector does not work is contamination (oiling) of the speed sensor (DS), especially often a failure occurs if the DS gets oil from the gearbox or engine (for example, there is a leak from valve cover ICE). There are also other reasons:
Before you start changing anything, you need to find out why the device does not show the speed. First of all, they start checking with the speed sensor, since most often all failures in work are associated with it. We examine the DS for contamination, see if there is a break in the wires. 
If the electrical part of the sensor is faulty, the Check Engine lamp on the instrument panel lights up. During the computer diagnostics at faulty sensor the scanner displays the error code P-0501, P-0501 or P-0503. Another error is determined by the on-board computer installed on the car.
There are also other signs of a faulty DS:
- on idling The internal combustion engine is unstable, and the engine may stall at low speeds;
- increased fuel consumption.
Verify electrical circuit from the DS to the speedometer on a VAZ-2110 car, the injector is quite difficult, so here it is better to resort to the help of specialists.
The gears of the DS drive, which are in the gearbox, can also break. It is easy to check the drive itself - you need to unscrew two bolts of its fastening with a 10th key, make a visual inspection of this mechanism.
If the plastic gear has broken teeth, chances are good that the gear is also broken in the gearbox. To replace the drive gear, you will have to remove and disassemble the gearbox.
On cars of the first 2110 editions 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 electronic circuit... It is simple to check the serviceability of the speedometer cable (TC): it must be disconnected from the checkpoint - if at its end the square is intact, then everything is in order in this connection.
Then we grasp the end of the cable with our fingers and try to twist it, if there are no cable breaks, the arrow of the speedometer should begin to move (rise). If the vehicle rotates too freely with your fingers, the cable is most likely broken. To check the mechanical speedometer itself, "tens", you must remove the instrument cluster. 
On a VAZ-2110 with an injector, a separate device showing the speed of the car is not sold, and the instrument cluster for 2110-11-12 changes in assembly. If it turns out that the cause of the malfunction lies in dashboard, it needs to be changed. We remove the instrument cluster (old model) as follows:
The main cause of speedometer malfunctions is the failure of the speed sensor, and if the DS is faulty, it must be changed. It is not difficult to replace the sensor on the "top ten" VAZ, almost any driver can do this work independently. The operation is especially easy on a machine with an 8-valve engine. Let's start replacing:
When installing, we put the connector in place, it should snap into place with a click, this work can be considered finished. With sufficient dexterity, such an operation is performed in 5-10 minutes.
Often, car owners encounter a problem when, after replacing the sensor, the speedometer needle starts to "lie" - to show the wrong speed. It should be noted that several types of DS have been developed for VAZ "dozens", and they have different catalog numbers. When buying, you should pay attention to the number of the failed sensor, and you need to purchase a new part only with the same marking. 
- The search for the cause of the inoperability of the speedometer should begin with an external inspection of the DS and the wires going to it. It is not uncommon for the wires to break in the immediate vicinity of the plug.
- If the speed sensor is covered with a layer of dirt or oily, it is necessary to remove it, wipe it, reinstall it and check the speedometer readings again. Perhaps, after that, the instrument arrow will start to show the speed normally again.
- If you cannot deal with the malfunction yourself, you should contact the car service to an electrician.
The speedometer, as the name suggests, shows the speed of the vehicle. Compliance speed mode important not only to avoid fines, but also to make safe turns and other maneuvers. The higher the speed, the larger the turning radius must be. If the radius is less than necessary, there is a high probability of the car skidding and overturning the car. Therefore, the serviceability of the speedometer is just as important as the quality of the steering or braking system.
How does a speedometer work
There are two main modifications of speedometers:
- mechanical;
- electronic.
The principle of operation of a mechanical speedometer is to transform the speed of rotation of the shaft into energy that moves the needle. The speedometer drive is located in the mechanical or automatic box gearshift and is connected to the indicator by a flexible cable protected by a metal casing. The ends of both sides of the cable are made in the form of a square, due to which they effectively transfer rotation from the drive to the indicator. The mechanical speedometer is always connected to the odometer (vehicle mileage indicator) and forms a single unit with it.
The principle of operation of an electronic speedometer is a sensor that generates pulses of a certain frequency and duration (depending on the speed of the car). The sensor is either connected to a separate electronic speedometer, or to the on-board computer. Both the computer and the speedometer perform the same function - they count the number of pulses per unit of time and convert the value into understandable kilometers or miles per hour.
Speedometer malfunctions
The most common malfunctions are:
- breakage or damage to the cable;
- jumping off the cable tip from the driven gear;
- malfunction of a mechanical or electronic indicator;
- impulse sensor malfunction;
- poor contact or broken wire that connects the sensor and the indicator or computer.
Video - How to fix a speedometer
Diagnostics and repair of mechanical speedometer
- To diagnose you will need:
- 12 volt motor;
- flat and Phillips screwdrivers;
- lantern; jacks and stands;
- instructions for the repair or maintenance of your car.
Raise the front passenger side of the vehicle with a jack to check the speedometer. Read about how to do it safely in the article (Replacement and restoration of shock absorbers). Remove the front panel (dashboard) to get to the instrument cluster. On some car models, you can do without this operation, so carefully study the instructions for the repair and operation of your car. Remove the instrument cluster and unscrew the cable fixing nut from the indicator, start the engine and engage 4th gear. Check if the cable is spinning in the protective cover? If so, stop the engine, insert and tighten the cable end, then start the engine again, engage 4th gear and look at the indicator reading. If the arrow does not change position, the indicator is faulty, it must be replaced.
If the cable does not spin with the engine running and the gear engaged, turn off the engine and remove the cable from the drive located on the driver's side of the gearbox. Pull the cable out of the engine compartment and inspect the tips for damage to the shape (square). Twist the tip on one side of the cable and observe the tip on the other side. If both tips rotate synchronously, effortlessly and the edges of the tips are not lapped, then the problem is in the worn drive gear, so it must be replaced. This operation is described in the vehicle repair and maintenance manual.
Diagnostics and repair of electronic speedometer
For diagnostics and repair you will need:
- flat and Phillips screwdriver;
- tester;
- keys set;
- scanner for injection engine (you can use a conventional oscilloscope instead).
Run the on-board computer (BC) self-test. On most injection vehicles manufactured after 2000, BC supports this function. If the BC generates an error, you need to decipher it using a special table, which is in the instructions for servicing and repairing your car. But, the diagnostic results will show whether the entire speedometer system is working or not. To fix the malfunction, you will have to look for damage yourself. To do this, raise the vehicle as described above. Connect the oscilloscope to the middle contact of the speed sensor (installed in place of the speedometer drive) and the positive contact of the battery. Start the engine and engage 1st gear.
A working sensor will produce a pulse signal with a voltage of at least 9 Volts with a frequency of 4 - 6 Hertz. If the sensor is working properly, you must turn off the transmission and use a tester to check the wire that connects the sensor to the controller electronic unit control (ECU). Or use an oscilloscope to check the sensor signals at the ECU input. If there are signals, it is necessary to check the terminals and the wire that connects the ECU and the instrument cluster (speedometer indicator). If there is a special scanner, then it is advisable to check the speedometer indicator, this will allow you to more accurately determine the cause of the malfunction.
Most often, the speedometer stops working due to water and dirt getting into the terminals, as well as due to breakage or breakage of signal wires. Therefore, in most cases it is sufficient to dry and clean the contacts. If, according to the results of the check, a malfunction of the speed sensor is revealed, its replacement will be required. This procedure, as well as the replacement of a damaged indicator, is described in detail in the instructions for use and repair of your car.
The speedometer allows you to control the speed and make sure that the appropriate mode is observed while driving on the roads. If the device does not work, it will be difficult to navigate while driving. Very often this problem occurs on domestic Lada Priora, about the faults of which we will talk.
A broken speedometer on the Priora may not work at all or work incorrectly. Photo: f-a.d-cd.net
What are the symptoms of the problem
The appearance of one of the following signs can say for sure that the speedometer on the Priora is not working:
- The arrow remains at zero, although the car has been moving for a long time.
- In principle, the correct definition of the speed indicator. Or vehicle turns off altogether.
In practice, the second type of failure is the most common. Temporary breakdowns at the speedometer are a situation that is often faced by those who have purchased a Lada Priora car. This is often the case when the needle is at zero even though the movement has started. The dashboard begins to display an illuminated exclamation mark. The electric power steering stops working. But several minutes pass, and there is no trace of the problem, the electronic components continue to work in the old mode.
Lada Priora - car models where electronic types of speedometers are used. In this regard, the microprocessor responsible for operation may fail.
The main reasons for the failure of the speedometer
First you need to make sure that the source of the trouble was not bugs in the chip itself, on which the vehicle functions. While the machine is in operation, the so-called cache in these chips is clogged with information. Because of what failures occur, including temporary ones. "Mass" with battery is simply reset in this case. Otherwise, you will not be able to reset your data. Wherein onboard network in the vehicle is completely de-energized.
If zeroing does not help to get rid of problems, carry out a full system check:
- Check the safety plate installed on the board in the power circuit. The desired part will be marked - IG \\ METER.
- After that, it is necessary to diagnose the health of the wiring located on the site, starting with the speed registration sensor, and ending with the dashboard. It is in this section that the wires begin to break. Constrictions may occur, other types of defects may appear. This usually happens due to the active use of the car.
- The contacts located in the connectors require special attention. And capable of becoming unusable due to the formation of rust, high acidity. In this case, the contacts of the sensor and connectors are easy to clean to get rid of defects.
- The next step is to test the control sensor based on the distance traveled by the vehicle. If you contact the service center, then special equipment is used to check this part. If it is absent, then the check is performed when the car travels several kilometers. With the continued countdown, you can say for sure that the system is in good order.
What to do if the speedometer on the Priore does not work due to the dashboard
If it is in it that the malfunction lies, then you need to get to the mechanism that rotates the arrows. And conduct a thorough inspection. It is recommended to drive the car into the garage box and park the vehicle on parking brake... After that, open the hood of the car, disconnect the terminal marked with a minus from the battery. Thanks to this action, it will be possible not to be afraid of a circuit in the on-board network.
Almost everyone can remove the dashboard on the Lada Priora. Photo: tuningtaza.ru
The next step is to carefully dismantle the torpedo. And here we need to do a few things.
- First, remove all overlays, completely.
- Then we carefully unscrew the steering wheel.
- We remove the switches located under the steering wheel.
The next step is to find and unscrew the self-tapping bolts. They allow the torpedo to gain a foothold in its place. Only when all these actions have been completed can the dismantling of the torpedo itself begin. To do this, it is enough to grab the part, pulling it slightly towards you. Then the wires are disconnected. But before that, they are marked so that they do not get confused later. The torpedo is pulled out and carried through the passenger door.
Other causes of malfunction
It is not yet known how much the problems with the speedometer will persist in the new generation of Priora. Photo: smolmotor.ru
The deflection of the arrow axis is another reason why the device may fail prematurely.
- First, they shoot the arrow itself, very carefully.
- For this, we put a small fork made of plastic under the arrow.
- The device must be lifted up, carefully, without haste.
- If the arrow was actually bent, then simply replace it.
The rotation of the speedometer is provided by special gears located on back side dashboard, from the rear. Each gear requires inspection if there is any problem with the speedometer. If necessary, parts are replaced, there should be no problems with this.
Replacing the gear is definitely needed if there are not enough teeth, if there are other reasons to doubt its performance.
After the defects are identified and eliminated, the assembly is carried out, with the implementation of actions in reverse order... The use of a sealant is assumed, but completely new, not old. After completing the assembly process, the owner must check the functionality of the fixture.
See what to do if the speedometer breaks down due to the speed sensor:
Conclusion and a few words about the repair of electronic speedometers
For diagnostics and repair work, we will need to purchase:
- Scanner for injection engine. But it can be replaced with a conventional oscilloscope.
- Keys set.
- Tester.
- Screwdrivers, flat and Phillips.
Start by running a self-test on on-board computer... This feature is supported on most modern carsreleased after 2000. If an error appears in the program, it must be decrypted. To do this, just take a special table. It comes with the vehicle itself or a sensor system. It's also easy to find on specialized sites.
Carrying out self-diagnostics, check out the list of errors that the board computer issues. Photo: i.ytimg.com
The diagnostic results in any case will tell you whether the system is in working order or not. To fix the problem, the fault must be found on our own. Why the car is raised in the same way as described earlier. The oscilloscope is connected to the average speed sensor. And with a contact, which is indicated by a plus sign. After that, the engine is started using first gear.
9 Volt voltage will be characteristic of the output signal if the sensor remains operational. The standard frequency is 4-6 Hertz. The transmission is turned off if the device is stable. Check the wire connecting the sensor to the controller of the electronic control unit. The sensor signals can be checked using the same oscilloscope.
Most often, speedometers start to fail when dust and dirt get into the terminals. Or due to the wires that broke off, they themselves became faulty. It is enough to clean the contacts and dry them completely. This procedure is always described in as much detail as possible in the vehicle's operating instructions.
