Ambient temperature sensor for VAZ 2114

An ambient temperature sensor is a device that allows you to measure the temperature outside and display it on the dashboard. This way the driver can always determine how many degrees outside it is now.

The sensor readings are affected by many conditions, for example, if the car is parked on a heated asphalt area under the sun, then the readings will be several degrees higher than if you drive into an underground parking lot. Since the degrees depend on the vehicle's location, the temperature will constantly change. An error of a few degrees is not terrible, but if the error is more than 5 degrees, then it is necessary to carry out diagnostics in order to correct the problem.

If the device is not working, the most common problems that may arise during the operation of the car are incorrect temperature readings; they can reach minus 40 even when it is summer outside.

At cold temperatures, it is recommended to disconnect the negative terminal from the battery and wait for 30 seconds. Electronics may not function properly in cold weather, so restarting may solve the problem.

Where is

The sensor is located immediately behind the front bumper, so getting to it is not difficult. To do this, you can use a jack to raise the car or drive it onto a lift. Since the device is located close to the ground, mechanical damage is possible, so if disconnecting the battery does not help, it is recommended to check the integrity of the device and wiring.

How to check

The wiring can be checked using a multimeter; to do this, you need to get close to the sensor from the bottom of the bumper and disconnect it from the grooves. After this, we inspect the chip and look for the latches; they need to be bent so that the device can freely come out of the chip. We inspect the wires that are attached to the chip and call it with a multimeter, searching for a group that does not transmit contact.

If the contact group is working, then it is necessary to check whether the mass is supplied to the device. According to the VAZ-2114 diagram, the mass of the sensor is located where the headlight unit is, highlighted with a red line in the diagram.

Establish contact if necessary. Also, the sensor can be connected simultaneously to the on-board computer and the car’s dashboard and, because of this, display incorrect data. In this case, you need to leave the connection only with the dashboard.

During the winter season, the sensor may simply freeze and because of this display incorrect readings. In this case, it is necessary to check its condition; if it is covered with ice, then warm it and treat it with an alcohol solution. After it has been processed, it is worth drying the contacts and connecting the device to the car.

It happens that the degrees are displayed correctly only when the car is stationary, but as soon as it accelerates, it immediately displays that it is minus 40 outside the window. You will have to inspect the fuse box, sometimes condensation gets into it and because of this it starts to work incorrectly.

Repair or replacement

There is no point in repairing the sensor, since it is a consumable item. If the wiring is intact, all contacts have been checked, then the only problem is the device itself and to replace it you need to purchase a new one. Its cost is about 200 rubles, after the old device is disconnected from the slots of the chip, we place the new device, put it in its place of fastening and make the connection. It is worth paying attention to the latch in the chip; you need to pull it towards yourself carefully; with a sharp impact it can break and in this case you will also have to replace the chip with the latch.

Also, if the readings are incorrect, there is a chance that the problem is with the instrument panel, but since this is an expensive replacement solution, it is best to consider it last.

Video on the topic

Description of the external air temperature sensor VAZ-2114 and its malfunctions

If the sensor is provided in the car system, then it should work. The reason for incorrect readings of the device responsible for measuring the temperature outside can be either problems with the car’s wiring or a breakdown of the car itself. Let's figure out what the outside air temperature sensor in a VAZ-2114 car affects.

Main characteristics

The ambient temperature is read by an electronic thermistor. The VAZ-2114 is equipped with one of the following types of sensor:

2115-3828210-03;
2115-3828210-02;
2115-3828210.

You can purchase any of these options, as they are interchangeable. They can be made by different manufacturers, the price of this component is about 300 rubles, so it is impractical to repair it. In unclear situations, it is necessary to change the device.

The information from this device is read by an on-board computer, which reads pulses from the sensor and converts them into readings on the instrument panel. If you use a faulty sensor for a long time, the pulse from it may be read with an error, then the “Check” light on the dashboard will light up. A car enthusiast can look for problems for a long time until he notices a difference between the actual air temperature and the one shown by the sensor.

A malfunction in the power supply circuit of this controller is recorded in the memory of the on-board computer in the form of code 23 or 25.

They stand for problems in the electrical circuit, because the device is one of its parts.

What does the ambient temperature sensor affect?

Car enthusiasts believe that the thermistor is a kind of device that only shows the temperature outside. In fact, this is not a simple thermometer. Since it is connected to the on-board computer, its readings slightly modify engine acceleration. The system has another sensor that measures the mass air intake. In this case, the external sensor does not affect the fuel supply too much; the engine will not stall.

Why does DTNV break down?

The main difficulty for novice drivers is the search for a device. The manufacturer has hidden the mechanism in such a way that sometimes experienced drivers are not immediately able to detect the DTNV. The controller itself is reliable, but breakdowns often occur.

Installation of external air t* sensor (ADTV)

Installing an outside air temperature sensor. The automotive world is improving and developing rapidly every year, bringing unique innovations to the characteristics of the car, providing comfort and convenience to its owner.

So the AvtoVAZ company equipped its latest models of VAZ-2110 cars with additional on-board computers - DTVV. But the next model of the VAZ-2115 car was equipped with a VDO dashboard, which already came with 2 windows, which made it possible to display the temperature regime directly on the instrument panel itself.

Today, the following options for installing DTVV on the VAZ-2110 car model are known and quite successfully used:

• First of all, you need to figure out which air temperature sensor is the most optimal in this case. Among the popular devices is DTVV, catalog number 2115-3828210-03 (price range 200-250 rubles).
• To make sure that it is working properly, you can use a simple technique (test): by heating or cooling the sensor itself, its resistance values will also change in accordance with the instructions supplied with it.

So, the primary question that arises when installing the sensor is:

Where should the DTVV be located?

In accordance with the instructions, the DTVV must be isolated from dampness and direct exposure to sunlight must be minimized. Also, the accuracy of the sensor readings is negatively affected by heat from the engine compartment. As an exception, it is allowed that the flow of oncoming air directly impacts the sensor itself.

Having compared all the conditions, a suitable location for the sensor is the front of the car (behind the front bumper in the center), as well as near the towing eye (in the bumper or slightly above the bumper on the left in the direction of travel).

You should know that if you install the DTVV in the rear of the car, the temperature readings will differ significantly from the actual temperature. Because the warm air coming from the engine is directed towards the rear of the engine.

The sensor is equipped with 2 contacts: one goes to ground, and the second signals temperature changes. It is advisable to make such information contact into the car interior through the corresponding hole near the fuse box.

Having carried out the above steps, you can proceed to connecting the DTVV to the VAZ-2110 trip computer.

Having selected the desired model of on-board computer, it is recommended to carefully study all the documentation related to its connection.

How to extend the life of the controller

The cost of this device is relatively small. If the sensor fails, it is better to replace it with a new one. Experienced mechanics advise doing this. You can try to extend its service life, but there is no guarantee that the DTNV will not fail at the most inopportune moment.

In any case, before replacing the controller, it is best to ensure the following:

If the contacts are oxidized, they should be cleaned.
Oxidized contacts on the chip should be wiped with alcohol and dried.
Check wiring.

If the actions taken do not lead to the desired result, it is best to replace the DTNV. To carry out all the work, you do not need to have the skills of a mechanic; it is enough to arm yourself with a handy item.

When replacing an old sensor with a new one, there should not be any particular difficulties. DTNV must be installed in the same place. If the car was not equipped with such a device, then first of all it is worth deciding on a suitable location for the mechanism.

It is strictly not recommended to install the controller in the rear of the car. Since hot air is directed precisely to this part of the body while the car is moving. Experienced auto mechanics install the sensor mainly in the front of the car. Where is the air temperature sensor located on the VAZ-2114? The manufacturer has already provided space between the front bumper and the radiator.

Outside air temperature sensor VAZ 2114

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The original ambient air temperature sensor with VDO K320 connector is intended to replace a failed standard one.

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