2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
Despite the fact that the VAZ-2106 car has a carburetor power system, there are still sensors in the car. They measure the pressure and temperature of the coolant. Let's talk about the temperature sensor VAZ-2106. It is installed in the car's cooling system and is connected to the temperature scale in the cabin.
Destination
So, what functions does the sensor perform? This element is necessary to control the coolant temperature, so that in case of overheating, the driver can respond to the situation in time. Information from the sensor is displayed on the instrument panel. The driver can observe how hot or cold the coolant is in the engine system. The VAZ-2106 temperature sensor does not perform any other functions in this car.
Device
If we consider the device, then there are two types of temperature sensors. The first is a thermistor. This is a thermal resistor whose resistance changes as the temperature rises or falls. The thermistor is inside a threaded metal case. On the body there is a tail plastic part. The contacts are in the back. One contact (positive) is available on the tail section. He goes to the dashboard. The role of the second contact is performed by the body - it is connected to the total mass.
The second type of sensor is a special contactor with a bimetallic plate inside. The latter, depending on the heating of the antifreeze, closes or opens.
The first temperature sensor VAZ-2106 is used only to display data on the heating of antifreeze in the cooling system. As the temperature rises, the resistance of the sensor changes. A certain voltage is applied to the instrument scale. The device is installed in the engine block in the channels of the cooling system.
The second temperature sensor is a little different. It also reacts to the temperature of antifreeze or antifreeze, but is designed to turn on the electric fan on the radiator. This sensor is installed on the radiator.
Working principle
For the normal operation of the VAZ-2106 cooling temperature sensor, a voltage of 5 V is required. Since the thermistor has a negative temperature coefficient, as the antifreeze heats up, the resistance on the sensor will fall. Accordingly, the voltage will also decrease. The instrument panel determines the temperature by the level of voltage drop.
In different VAZ models, the sensor can be located in different places - in the cylinder head, in the thermostat housing or on its housing. Be sure to place the element in the area of \u200b\u200bthe outlet hose, which is needed for the passage of fluid into the radiator. In the VAZ-2106, DTOZH can be found in the cylinder head.
Connection
Connecting the VAZ-2106 temperature sensor is extremely simple. On the tail of the DTOZH, screwed into the cylinder block, there is a single contact. It is connected to the wire going to the dashboard. It has a corresponding terminal. To connect, just connect the terminal to the contact on the sensor, and then the dashboard will show the heating of the coolant, and hence the engine temperature.
Signs of malfunction
Temperature sensor VAZ-2106 is a virtually trouble-free device. Its design is very simple. Hence the reliability. But even with him, motorists can have problems. The reliability of modern spare parts leaves much to be desired.
Problems with the sensor come down to violation of indications, violation of calibration and resistance. But the only trouble is the risk of engine overheating, as the driver does not see the real temperature. On injection cars, the damage from a broken sensor will be much greater - there the sensor is also connected to the ECU, and the proportions of mixture formation depend on the engine temperature.
If we talk about another temperature sensor VAZ-2106, which is responsible for turning on the fan, then its malfunction can lead to disastrous consequences. Due to the exceeded temperature of its activation, the fan will not work in time. In order for the cylinder headoverheated and began to deform, it is necessary that the temperature rises only a couple of degrees from the norm. The second malfunction that can lead to the absence of readings on the dashboard is a broken wiring to the sensor.
How to check?
Since the VAZ-2106 coolant temperature sensor is extremely simple, the methods for diagnosing it are extremely simple. But before diagnosing an element, you should inspect the wiring and its integrity. You can also check if the sensor is getting voltage.
The most accurate way to check the performance is to measure the resistance using a multimeter. But during the measurement process, the element will have to be boiled in water. As the temperature changes, the resistance of the sensor will change. But since DTOZH does not affect anything in the VAZ-2106, it is easier to simply replace the faulty element. Moreover, its price is not higher than two hundred rubles.
How to replace an element?
To replace the VAZ-2106 engine temperature sensor, it is enough to cool the engine if it was previously heated. In the process, you will have to unscrew the element from the cylinder head cooling jacket, and you can burn yourself with hot liquid. The sensor has an M14 thread. In order to unscrew it, you need a 19 key. The defective element is unscrewed, and a new one is screwed in its place. On some vehicles, it is recommended to drain the coolant slightly before replacing.
You can replace the sensor with any one that is sold in the store and is similar tothread in the cylinder head. The main thing is that the contacts on the element are similar to the plug in the car's wiring. Then everything will connect and work without any problems.
Conclusion
DTOZH on the VAZ-2106, although it does not affect the start and operation of the engine, is an important element. According to his testimony, the driver can see that the engine is warm enough to start moving. Also, the driver can observe how the coolant heating changes as you move, control the temperature regime and eliminate the risk of engine overheating. After all, overheating leads to deformation of the surfaces of the cylinder head, which leads to significant investment. At best, the head can be sanded, and at worst, it will have to be replaced due to cracks.
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