When the speedometer fails, most drivers immediately blame the speed sensor. Indeed, this device quite often breaks down, which is due to many factors. The principle of its operation is based on the Hall effect.
How to check the speed sensor VAZ-2110
Before performing the replacement, you need to make sure that this particular device is to blame. Therefore, we first check it. There are several ways to do this. From the tools you will need a set of keys and a digital voltmeter or any other device that allows you to measure the current frequency.
In the first method, we need to remove the device. Then the speed sensor on the VAZ-2110 must be checked. To do this, connect a voltmeter to its contacts. Next, by rotating the sensor, we should get the output value in Hertz on the screen. If you start to rotate the rotor faster, then the value should increase, if this does not happen, then something is wrong.
If you use the second method, then we do not need to dismantle the sensor from the car. But for this you will need to install the machine on the inspection hole and raise one wheel, after which we connect the voltmeter to the sensor connector. We try to rotate the wheel of the car and look at the resulting value.
Removing a speed sensor: step by step instructions
If after diagnosis it turned out that the device is malfunctioning, then it must be removed. This is easy enough to do. To do this, turn off the ignition and disconnect all wires leading directly to the sensor. Next, we take the key at 22 and we turn out the failed device from there. Installation is carried out in the reverse order with a tightening torque of not more than 10 Nm.
It often happens that at this time the drive shaft breaks off. In this case, it will be necessary to dismantle the speedometer drive. To do this, use the key at 10, If the device does not come out of the socket, then slightly shake it. You need to be careful, as there is a chance of the drive getting into the gearbox. Installation is in the reverse order. As you can see, there is nothing complicated. All work takes no more than 10 minutes.
Important information
Since cars produced by the Volga plant are not sterile under the hood, external pollutants are often the cause of the sensor malfunction. Therefore, in some cases, normal cleaning is sufficient. To do this, visually inspect the speed sensor on the VAZ-2110. If it is prone to oil, dirt, mining, etc. - remove it. How to do this, we already know.
Next, you need to clean it well, and then install it in place. If this does not help, then another reason is poor contact. This happens due to elemental corrosion. Another reason may be a break in the wiring. In order not to worry again, it's better to just buy a new device, especially since the speed sensor on the VAZ-2110 costs only 200-250 rubles. But first, it is advisable to check whether the speedometer works, since sometimes it is he who is at fault.
Conclusion
We have figured out how to correctly replace the VAZ-2110 speed sensor. The sequence of actions must be observed and you should not try to remove the device with the engine turned on or without disconnecting the wiring before that. It is also advisable not to smoke during the replacement and not to bring open fire close to the car. All these are basic safety measures that every car owner who has decided to carry out an independent replacement must observe.
In conclusion, I would like to note that the case of the device is made of plastic, so you need to be extremely careful when removing it, especially if you are not going to buy a new speed sensor on the VAZ-2110. If you find that the device does not respond, then it is useless to repair, it is much easier to buy and install a new one, because it will be much faster and cheaper, especially if you do it yourself.