Reasons why the speedometer of a Lada Granta car does not work

Information about the current speed of movement on the on-board computer of the Lada "Grant" comes from an electronic sensor. The Lada Granta speed sensor is installed on the gearbox. Despite the simple design, this part is extremely important for the correct operation of the electronic engine control unit. Together with the other six sensors (temperature, phases, crankshaft position, air flow, detonation, oxygen content), it generates the data necessary for economical, safe and reliable engine operation.

Where is the speed sensor on the Lada Granta and how to replace it

Perhaps not every car enthusiast or owner of a Lada Granta car can answer the question: where is the Granta speed sensor located? This is explained by several reasons.

First of all, the Lada Granta speed sensor is a fairly high-quality and durable part that rarely fails. Also, the product itself is small in size and it will be quite problematic for a non-professional to immediately notice it from under the hood. Therefore, let's still find out where the Lada Granta speed sensor is located?

Speed ​​identifier in vehicle design

Repairing any kind or replacing a speed sensor is a simple procedure, but it requires a clear understanding of its structure in the car’s design. Without knowing such information, answer questions like:

• How to check sensor
  for proper operation?
• Where is sensor
  ?
• How to remove the speed sensor?
• What is the connection diagram for the speed sensor?
• How to replace the speed sensor?

To begin with, let us repeat that the location of the speed sensor on almost all cars involves its installation in the speedometer drive (often called the sensor drive). Often, to find the speed ID, it is enough to find the wire coming from one of the front wheels and follow it to the place where it is next connected. The device he approached is a speed sensor, which is often located at the gearbox. The part almost always looks similar to the images below:

Where is the speed sensor on the Lada Granta?

So where is the Lada Granta speed sensor located? It is logical that the part associated with the transmission of data on the vehicle’s speed, idling, and fuel consumption modes is located somewhere near or directly on the vehicle’s gearbox housing.

However, in order to personally see this unit on Grant’s car by opening the hood, it is necessary to perform the following preparatory procedure: the inlet air supply pipe from the air filter to the throttle assembly is unscrewed and dismantled.

This way you can see where the speed sensor is located on the Grant. Now at the bottom of the gearbox housing you can see a part with a suitable plug and wiring. Another way to get acquainted with where the speed sensor is located on the Grant is to watch the video: where is the speed sensor on the Lada Granta.

Basic faults

The Lada Kalina speed sensor can easily fail. Every car enthusiast can notice the problem. The main “symptoms” indicating the development of the problem are identified, including:

• lack of movement of the arrow (it just lies there);
• the pointer makes sharp jumps;
• the arrow freezes at speed even in the absence of movement;
• The electric power steering fault icon is on.

If the speedometer does not work, the most common reason for this phenomenon is a malfunction of the speed sensor. It is located on the gearbox, secured with one screw. There are three main wires connected to it. If it is a Lada Kalina with a 16-valve engine, you can find the device on the washer side. In the version with 8 valves, it is necessary to remove the bellows of the engine air filter.

To determine the device number, simply remove it and rewrite the numbers. There is no need to rush into buying a new part; first you need to check all contacts. In some cases, the malfunction is due to oxidation of the wires or damage to the wiring. Perhaps the problem is hidden in the presence of metal shavings or other particles.

Many experts have noticed that the malfunction of the speed sensor on Kalina is associated with problems with the electric power steering. If, after replacing the element, it still does not work, the device may be defective or unsuitable for the vehicle. Therefore, it is necessary to select it according to the assigned number.

Replacing the speed sensor on Grant

In this case, if the speed sensor on the Grant fails, it will need to be replaced with a new one.

However, before purchasing a new part, you should reliably make sure that this is the problem. To do this, you need to check the condition of the corresponding car unit. We get to the place where the Lada Granta speed sensor is installed and perform the following checks:

• monitoring the integrity of the electrical circuit supplying the DSA. To do this, disconnect the power, carefully inspect the contacts for oxidation, tightness, contamination, and integrity of the insulation. If deficiencies are identified, they must be eliminated;

• monitoring the resistance of the sensor supply circuit (the value should be about 1 Ohm); • checking the condition of the speed sensor itself.

The speed sensor on the Grant itself changes in the following sequence:

• the sensor power plug is disconnected, the plastic clamp is bent and the part is removed; • the DSA fastening bolt is unscrewed; • pry up the housing and remove the sensor. The new product is installed in the reverse order.

How to tighten the electric power steering rack?

The appearance of a knocking sound in the operation of the electric power steering is associated with the need to tighten the steering rack.

New Lada: Knock in the suspension of Lada Grants - repair at an official dealer

How to do it right:

1. First you need to disconnect the battery; to do this, disconnect the terminals from it. Unscrew the battery mount; to do this, you need to unscrew two more nuts located at the edges. After this, the battery is removed and put aside.
2. Then you need to lift the plastic stand, there are four more screws under it, they can also be unscrewed.
3. Having done this, it is necessary to move this stand forward until the platform is disconnected from the air filter housing retainer pad. After this, the trim can be moved back, this will provide freer access to the rail itself.
4. At the next stage, you will need to crawl your hand under the rail. Directly below it, as shown in the photo, there is a rubberized cap; it will need to be removed, this will allow the key to access the adjusting nut.
5. To perform adjustment work, you will need a special wrench to tighten the rack; without it, the adjustment procedure will not be possible. Using this wrench, you need to crawl under the car rail to install the tool in the required hole.
6. When adjusting, be careful not to overtighten the rack. If its tightening is very strong, then when cornering the rack will bite, and this, in turn, may affect the safety of movement. The angle of adjustment is always different, it depends on how much the nut is loose, but usually when performing such work the nut is tightened by approximately 30 degrees. This should be enough to get everything right. After the adjustment is completed, it will be necessary to check that this task was performed correctly. That is, you will need to make sure that the steering wheel turns normally to any position all the way and there is no knocking. If the knock remains, then the adjustment continues.

What speed sensor is on the grant?

The vehicle speed sensor (VS) is installed on the gearbox and is designed to transmit pulse signals to the controller (electronic control unit) to display the speed on the speedometer. The process of removing and installing the speed sensor on Lada Kalina, Lada Priora and Lada Granta cars is carried out in a similar way.

You will need: a “6” wrench and a Phillips screwdriver.

Interchangeability of sensors : there are several types of DSA, which differ in catalog numbers. Sensors 1118-3843010 and 2170-3843010 are not interchangeable. To be completely sure, you should buy a DSA with the same markings as the old sensor.

Procedure:

1. Unscrew the screw on the corrugation clamp.
2. Move the air filter bellows to the side.
3. Release the connector fastener and move the block with wires to the side.
4. Unscrew the nut and remove the speed sensor.

Installation is carried out in the reverse order, after first cleaning the connector from dirt. The replacement process is also shown in the video:

Let us remind you that most often the speed sensor is replaced when the speedometer does not work.

Tools:

• Ratchet wrench
• 10 mm head
• Medium flat screwdriver

Parts and consumables:

Note:

The speed sensor on the Lada Granta is located and installed on the gearbox. When the drive wheels rotate, the speed sensor generates 6 pulses per 1 m of vehicle movement, and the controller determines the vehicle speed based on the pulse frequency.

1. Disconnect the wire from the negative terminal of the battery on the car.

2. Disconnect the wiring harness connector from the speed sensor by prying the plastic latch.

3. Using a 10 mm socket, unscrew the sensor mounting nut.

4. Remove the speed sensor from the transmission housing by prying its housing with a screwdriver.

5. Replace the faulty speed sensor with a new one.

6. Install the speed sensor in the reverse order of removal.

The speed sensor on the Grant is located on the gearbox. It works as follows: in the gearbox there is a special mark on the gear wheel, which, when this wheel rotates, generates an impulse using a speed sensor. It is by the frequency of these pulses that the speed of the Lada Granta is determined.

Attention! If your Lada Granta is equipped with an ABS system, then the speed is read from the ABS sensors. In this case, the speed sensor at the gearbox is not connected and acts as a plug.

The DS on the Grant, like on many cars, is located quite low, so it is exposed to water and dirt. If we remember that the speed sensors themselves on domestic cars are not highly reliable, then it becomes clear why they fail so often.

Reviews

Conclusion Despite the negative reviews about the digital sensors on the Lada Granta Liftback, their manufacturing quality is decent. Subject to systematic technical inspection and careful handling of the machine, the service life exceeds the warranty period.

Source

How to replace a speed sensor on a Grant

Due to the inconvenient location of the sensor itself, replacing it is quite difficult. First of all, you need to disconnect the pipe that goes from the air filter to the throttle. This will improve access to the sensor itself.

Required tool:

Disconnect the power plug from the speed sensor. To do this, you need to bend the plastic clamp and at the same time pull the block.

Using a “10” wrench, unscrew the sensor mounting bolt.

We pry up the sensor housing and remove it.

We install the new sensor in the reverse order.

If you still have questions about this operation, you can always ask them on our forum. Also pay attention to other useful articles in our Lada Granta manual transmission section.

Causes

Before you begin repairs, you need to determine why the speedometer is not working.
All repair actions will depend on the cause of the breakdown. One of the most common causes of speedometer failure is a broken cable. Such a breakdown is easy to detect - the steel ends of the cable touch the shell when the car is moving. Because of this, a characteristic sound is heard in the area of ​​the shield.

Another cause of malfunction may be blown fuses. Poor contact connections can also lead to damage to the speedometer. Perhaps the reason is not serious. For example, a broken arrow can also distort the readings or not give them at all. In this case, it is enough to just replace one part.

Please note that due to the peculiar location of the speedometer in this Lada car model, the cause of failure is often water or dirt that gets into it. In this case, if the damage is not too severe, it will be enough to dry and clean it.

Speed ​​sensor repair on Lada Grant

To record the exact speed of movement, use the Lada Granta speed sensor (abbreviated as DS or DSA). It is located at the gearbox.
Despite its small size, it is one of the main devices of the vehicle. The Lada Granta engine management system is equipped with 7 main sensors: engine temperature sensor, oxygen sensor, speed sensor, as well as crankshaft position, phase, detonation and mass air flow sensors. The reliability and safety of the vehicle unit directly depend on the condition of these devices.

Tips for motorists

An electronic speedometer is installed on the Lada Granta passenger car, which receives information about the speed of rotation of the secondary shaft of the gearbox using a speed sensor. The main reason for speedometer failures to perform its function is the speed sensor. This is mainly due to the fact that dirt and water get into its location when the car is moving in bad weather, and as soon as its seal is broken, problems with the speedometer readings begin.

In addition to the speedometer, the odometer also stops working, the electric power steering is switched off at times, and the electronic gas pedal (E-pedal) begins to glitch. To make the electric power steering and E-pedal work, you will need to turn off and then turn on the ignition while driving, which creates certain inconveniences when driving. Therefore, there is no need to delay repairing the speed sensor.

If the speed sensor fails, then the speedometer needle goes to zero, and a check lights up on the instrument panel, indicating that a malfunction has occurred, which can be determined by diagnosing the error code. It is better to remove the speed sensor on an overpass or in an inspection hole, since access to it is much better from below than through the engine compartment. After replacing the speed sensor, it is necessary to erase the error from the ECM memory. This can be done by removing the negative terminal of the battery for about five minutes.

When the speedometer needle starts to twitch, and then it turns off and turns on again after a while, then we can make the assumption that contact is periodically lost in the speed sensor connector. If the driver does not pay attention to this malfunction, then after some time of operating the car, corrosion will destroy the contact so that the speed sensor will not be able to transmit signals to the ECM and the speedometer will stop working. Therefore, when installing a new speed sensor, seal it with sealant and electrical tape so that moisture does not get inside it and to the contacts of the block.

The electrical circuit of the speed sensor is protected by fuse F7 (7.5A), located in the mounting block to the left of the steering column. It can also burn out in the event of a short circuit, but if this happens, not only the speedometer will not work, but also the engine of the Lada Granta will become unstable. This will happen due to the fact that fuse F7, in addition to the speed sensor, also protects the circuits of the mass air flow sensor (MAF), oxygen sensor and canister valve.

Yesterday I came home, started climbing onto the curb and slightly hit the bottom of the car. And then it started. The speedometer needle began to dance, at first it seemed to me that it was even accompanied by music. Then it twitched at zero, twitched to 200, and fell again. No errors occurred; the engine warning light did not light up on the instrument panel.

She didn't get up again. I drove around the yard, looked smartly under the hood, and screwed in all the chips I saw. Did not help.

Knowledgeable people said that the speed sensor was broken, quite logical, but where is it located? I went to a car store to buy a new one to check, the store is good, they accept returns if there was no loss of presentation. And the seller told me that when the speed sensor breaks down, the electric power steering also doesn’t work, but for me it works.

Sources

• https://new-granta.ru/zamena-datchika-skorosti-na-lada-granta/
• https://ladaservice.info/lada-granta/elektrooborudovanie/zamena-datchika-skorosti-na-lada-granta/
• https://new-lada.ru/lada-granta-prichiny-otkaza-spidometra/
• https://la-granta.ru/gde-naxoditsya-datchik-skorosti-na-lade-granta-i-kak-ego-zamenit.html
• https://nadouchest.ru/kak-proverit-datchik-skorosti-granta/
• https://housepic.ru/lada-grant-speed-sensor-principle-of-operation-the-speedometer-does-not-work-on-the-mode-of-grant.html
• https://housepic.ru/she-refuses-the-speedometer-on-the-grant-why-the-speedometer-does-not-work-on-lada-grant-kalina-and-prior-and-how- to-deal-with-this.html

How to determine that the DS is faulty

The principle of operation of the speed sensor is as follows: there is a certain mark on the gear wheel of the gearbox that generates an impulse using the DS when the wheel rotates. The speed of the vehicle is determined based on the frequency of the received pulses. As the frequency increases, the speed of the machine increases. The signal from the speed sensor, as well as from many others, is displayed on the instrument panel.

The fact that the DS on the Lada Granta is located low indicates that it is strongly exposed to water, sand and dirt. This is the main reason for its failure. The following symptoms indicate that the sensor responsible for the speed of the Lada Granta car is faulty:

• the speedometer needle is at zero while driving or does not always work;
• unstable idling;
• The speedometer readings do not correspond to reality;
• fuel consumption increases;
• engine thrust decreases.

Principle of operation

DS of this type is located in all VAZ cars, and the 8-valve Granta engine is no exception. The basis of the work is the Hall effect. Each of the 3 contacts located on the sensor performs its own function: pulse - is responsible for generating pulses, grounding - turns off the voltage in case of leakage, power supply contact - ensures current transmission.

The operating principle is quite simple:

• A special mark, which is located on the gear wheel, generates impulses when the car wheels move. This is facilitated by the pulse contact of the sensor. One revolution is equal to recording 6 pulses.
• The speed of movement directly depends on the number of pulses generated.
• The pulse frequency is recorded and the resulting data is transmitted to the speedometer.

Increasing the speed increases the pulse frequency and vice versa.

List of online stores, addresses of companies providing services

Reviews of companies

• Vasily: six months ago I installed a servo drive on Grant at the A1-Motors service station. The guys did everything quickly and professionally. My recommendations.
• Ivan: after buying the Lada, I replaced the power steering with an electric steering system. I ordered the work from the service station “Auto Service on Sedova”. New equipment, many repair boxes, work professionally.
• Innokenty: comrades recommended installing an EUR. I bought it at the Motel Varshavsky parts store. Good quality, reasonable prices, bonuses when purchasing.
• Vladlen: I drove the power steering for two years and decided to switch to the electric power steering. They advised to buy from Expert-Auto. Six months have passed since installation, no complaints, my recommendations.
• Vyacheslav: I’m leaving my positive review about the auto parts store “Spare Parts on Wheels”. Professional advice, reasonable prices, friendly staff.

Possible breakdowns

Troubleshooting in the speed calculation system must be looked for in the electrical circuit. It is better to start work with the fuse.

Fuse

A 10 A fuse is responsible for protecting the instrument panel. It is located in the fuse block and is marked “F1”. It is necessary to remove the element and visually inspect for a break in the internal jumper. If there is no break, but there is melting of the case, then the protection device must be replaced with an exact analogue of 10 amperes. Additionally, you need to inspect the fuse contacts, eliminate any defects, and clean them.

After installing a new fuse, you need to check the circuit for electric current. To do this you need:

1. Turn on the ignition.
2. Set the multimeter to DC voltage measurement mode.
3. Connect the red test probe to the fuse output.
4. Black dipstick with ground.