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?
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.
Instructions for replacing the device yourself
Replacing the drive on Kalina is simple, you need to perform the following steps:
Using a wrench, unscrew the screw securing the device to the gearbox. Next, use a screwdriver to carefully pry the hole and remove the speedometer. At the next stage, the removed drive should be inspected for defects and contamination.
It is also necessary to check the seat and clean it of dirt. When inspecting, pay attention to the gearbox. If oil stains are found, the O-ring must be replaced. We install the repaired or new speedometer in its original place. We assemble the drive in the reverse order of removal.
Removing the pointer from the panel
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.
Why does the speedometer break?
It is worth noting that in some cases it is not difficult to repair the speedometer yourself. In others, you will need the help of specialists.
Thus, oxidation of contacts is considered a fairly easy to fix fault. It is characterized by the “jumping” of the arrow, despite the fact that the speed of movement remains stable. The problem is resolved by cleaning the contacts.
The wires are frayed. This reason can be suspected by the chaotic movement of the needle when starting the engine. Meanwhile, experts note that sometimes the problem does not manifest itself for a long time. It can be identified using a tester.
Sensor failure. A speed control device whose performance is questioned is replaced with a known good one. If the speedometer begins to function normally after this procedure, then there is no point in further looking for damage. Often sensors become unusable after their housing is destroyed and water or dirt gets inside.
Connectors. They are located in the VAZ-2110 in a place where they are constantly exposed to dirt. As a result, the contact is broken and the speedometer needle moves chaotically. The connectors must be completely cleaned and the connection must be checked for reliability.
Often the speedometer also begins to malfunction due to shaft wear. In this situation, it will be possible to get rid of the problem only after completely replacing the above-mentioned part.
As you know, the manufacturer installs an electronic speedometer on this model. If it has become unusable, then this problem is quite serious, since the above-mentioned device itself is not for sale. For this reason, you will have to buy a whole shield. However, in fact, in nine out of ten cases the problem is in a completely different place.
On a VAZ-2110 with an 8-valve engine, the speedometer receives information from the speed sensor. It, in turn, is located in the gearbox. There, through two gears, it receives torque data from the gearbox shaft.
Everything works similarly for cars with 16-valve engines.
Most often, as noted above, the problem is that the sensor is too dirty. In general, dust always accumulates under the hood of the VAZ-2110. It, when mixed with oil, creates a fairly stable barrier. As a result, the reliability of the speedometer readings becomes unconditional. The problem is easily solved - the sensor is cleaned and dried.
It is worth recalling that it will be more convenient to access it directly through the gearbox, since doing this from below is very inconvenient.
Another very common reason is problems with the electrical network. It all needs to be checked
In addition, attention is also paid to:
- reliable fastening of wiring in terminals;
- their general condition;
- fuses located within the mounting block.
In a situation where no damage to the electrical network is detected, you will have to take on the sensor itself. Its breakdown is the third most common cause of speedometer failure. It is checked in the following sequence:
- the sensor is removed from the gearbox;
- a drill or a screwdriver is applied to the drive, switched to the unscrewing mode;
- the ignition turns on;
- By pressing the drill button, rotate the drive.
In a situation where the speedometer needle begins to move, it should be recognized that the monitoring device is fully operational. This means one thing - the fault lies somewhere in the gearbox. Here, only an experienced car enthusiast or a professional locksmith can fix the breakdown on their own. When the arrow does not move, it will be enough to replace the sensor itself.
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.
How to make a replacement
Before removing the speed sensor on the Lada Granta, it is worth checking the functionality of the electrical circuit. Perhaps the problem is a break or discharge of the battery, but the sensor itself is working. To do this, you should take the following steps:
- After turning off the power, it is necessary to check the contacts and, in case of oxidation or contamination, clean them.
- Then check the wires for integrity, special attention should be paid to the bends near the plug, there may be breaks there.
- The resistance test is carried out in the grounding circuit, the resulting indicator should be equal to 1 ohm.
- If all indicators correspond to the norm, all three contacts of the DS are checked for voltage and grounding. The result should be 12 V. Low readings may indicate that the electrical circuit is faulty, there is no power from the battery, or the electronic control unit has failed.
- If the voltage is okay, then the most effective way to check the sensor is to find it and replace it with a new one.
Let's consider the sequence of actions to replace the DS:
- Getting started, first of all, disconnect the pipe connecting the air filter and the throttle assembly.
- We turn off the power contact located on the sensor itself. To do this, you need to bend the lock and lift it up.
- Using a 10mm wrench, unscrew the bolt that secures the sensor to the gearbox.
- Use a flat-tip screwdriver to pry up and remove the device from the hole in the gearbox.
- Install the new element in the reverse order.
Signs of a broken speedometer
The main signs of a non-working speedometer are:
- when the car moves, the arrow remains in place;
- while moving, the arrow twitches or freezes in place;
- The speedometer works until the engine is warmed up to operating temperature, and then the needle freezes and does not move.
The speedometer occupies the central part of the instrument panel. The instrument needle shows the speed of the vehicle.
If the described symptoms appear, you should check the operation of the speedometer, find the cause and eliminate it. Diagnostics and repair of devices on a VAZ 2110 with an injector and a carburetor are carried out differently.
Principle of operation
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.
Signs of a malfunctioning speed sensor:
- The speedometer needle does not react to speed in any way (it lies at zero);
- Electric power steering does not work;
- The speedometer readings change, but do not correspond to reality.
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.
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.
Please note that unstable engine idling and increased fuel consumption can also be due to a malfunction of the Lada Granta oxygen sensor, which consists of two devices: a control catenary collector located in the upper part, and a diagnostic one installed in the catenary collector behind the converter. They operate on the same principle and are interchangeable. The control oxygen sensor monitors the adjustment of the composition of the air mixture supplied to the injectors. The diagnostic oxygen sensor signals the presence of oxygen in the exhaust gases after the converter.
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
Inductive type sensors
To operate the sensors installed in the front brake mechanisms, gears are made on the housings of the external hinges of the front wheel drives.
To operate the sensors, master discs are installed in the rear mechanisms under the brake drums.
Rice. 4. Rear wheel speed sensor
Pulse signals from the sensors enter the control unit.
When one of the wheels is blocked, the hydraulic modulator, at the command of the control unit, limits the pressure in the corresponding channel.
If a malfunction is detected, the control unit informs the driver using a warning lamp on the instrument panel.
The problem can be determined by the fault codes.
An ABS malfunction may be caused by a failure of the wheel rotation sensors or a malfunction of the hydraulic valve block itself.
If the ABS fails, the braking system remains operational, but braking efficiency is reduced.
Removing the ABS hydraulic unit
We install the car on a lift or inspection ditch.
Disconnect the plug block of the wires from the hydraulic unit.
We disconnect the brake pipes going to the brake mechanisms from the hydraulic unit of the anti-lock braking system. We install plugs on the tubes and holes in the hydraulic unit.
Disconnect the primary and secondary circuit pipes of the master cylinder from the ABS hydraulic unit.
Using a 13mm socket, unscrew the two bolts securing the hydraulic unit bracket to the front side member.
Remove the hydraulic unit with the bracket assembly.
Using a 10mm wrench, unscrew the hydraulic unit from the bracket.
Hydraulic unit installation
We install the hydraulic unit on the bracket and secure it with nuts. The tightening torque of the nuts is 7 – 10 Nm.
We install the hydraulic unit with the bracket assembly on the car body and tighten the two bolts with washers securing the hydraulic unit to the left side member.
We remove the plugs and attach the tubes to the ABS hydraulic unit. The tightening torque of the tube fittings is 15 – 18 Nm.
Attach the plug block. Install the battery. We bleed the brake system.
Removing and installing the front wheel ABS sensor and rotor
We install the car on a lift or inspection ditch.
Disconnect the front wheel speed sensor harness connector from the front wiring harness.
Using a flat-head screwdriver, remove the speed sensor harness block holder from the hole in the car body.
Remove the sensor harness from the brackets on the front suspension strut and the car body.
Using a TORX E8 socket, unscrew the bolt securing the speed sensor to the bracket on the steering knuckle and remove the sensor.
Installing the front wheel speed sensor
Before installation, apply AZMOL LSC-15 lubricant to the mating holes. Install the sensor in reverse order. The tightening torque of the sensor mounting bolt is 6 – 9 Nm (0.6 – 0.9 kgcm).
How to check and replace the sensor
This type of speed sensor is present in all VAZ cars
Check the continuity of the electrical circuit, because a break in it can lead to a malfunction of the DSA. Disconnect power. Inspect the contacts carefully. If there is oxidation or dirt, they need to be cleaned. Pay special attention to the wires located near the plug; they are bent in this place and can fray the insulation.
- We measure the resistance in the grounding circuit. Should be 1 ohm.
- If the circuit and resistance are normal, we check the operation of the DS itself.
The Lada speed sensor, installed on all AvtoVAZ cars, operates using the Hall effect, i.e. one full revolution is equal to 6 pulses. It has 3 contacts: ground, voltage, pulse signal. We ring the contacts for the presence of grounding and voltage (12 V). If the voltage is absent or less than 12 V, it means that either the power circuit is faulty, or the battery is discharged, or the ECU is broken. The output-to-ground voltage should be in the range of 0.5-10 V. The easiest way to check the operation of the device is to replace it with a properly functioning one.
To remove the DS you will need: a flat screwdriver, a 10mm wrench (ideally a head with a ratchet). In a Lada Granta car, the sensor responsible for speed is located extremely inconveniently, so replacing it is quite difficult. To improve access, first disconnect the thick pipe going to the throttle body from the air filter. Then:
- Disconnect the power plug from the DS. Bend the plastic retainer and immediately pull the shoe up to remove it.
- Unscrew the DS mounting bolt with a wrench.
- Pry up the DS body, because it is tight, and remove it.
