Ambient temperature sensor viburnum

If you begin to notice that the outside air temperature readings on your car’s on-board computer differ from the actual values, then the outside air temperature sensor is to blame. Of course, if you are stuck in a traffic jam in the summer heat, and at this time you notice that the readings have increased sharply, there is nothing strange here, since at low speed or while parked with the engine running, the heat affects the sensor, it is not ventilated and starts slightly overstate the data.

The air temperature sensor is located at the bottom of the front bumper, but you won’t be able to remove it right away; you’ll have to do some more work. More on everything below in order.

First you will need to unscrew the lower grille of the front bumper, which is attached to 2 screws:

Shown below with magnification for a better understanding:

After both bolts are unscrewed, you can begin to remove the grille, first using a flat-head screwdriver to pry the grille from above and remove it from the latches:

After that, on the right side inside we find this part, which will be the sensor. You need to pull it a little to the right and remove it from its seat:

And then pull it out along with the wire, as shown in the photo below:

To replace the air temperature sensor, you need to disconnect it from the plug with the power wires, for which you need to press the latch and pull the plug to the side:

Now everything is ready, you can safely make a replacement by first purchasing a new part:

We perform the installation in reverse order, after which we check the functionality of the new part.

Hi all! My Standard configuration does not include an outdoor temperature sensor; in theory, and unlike the Standard, there should be no wires. But today, by chance, I saw this picture for the first time? What is this, a tidy glitch? Or are the wires still laid there and they are shorted? Who can tell me what? PS This is not the coolant temperature, it is shown separately there further in a circle.

How to replace the ambient temperature sensor on Kalina?

The vehicle system is equipped with a variety of instruments that measure this or that indicator, which are aimed at ensuring the most comfortable operating conditions and functioning of the car.
Some types of analyzers are vital, for example, DTOZH - coolant temperature detector. It monitors the level of heating of the cooler, thanks to which the system can regulate the operation of the engine ventilation complex, the level of fuel enrichment and speed.

External air temperature sensor

Other devices are not so indispensable in a car, but their use helps make the use of the car more comfortable and the trip more enjoyable.

Such devices include an external air temperature sensor.

This device should not be confused with an intake air temperature detector, which helps the engine operate properly. Both of them can carry the abbreviation DTVV, so you should be doubly careful when it comes to these devices.

How to choose high-quality fuel for a car?

Since all failures of the oxygen sensor occur due to low-quality fuel, it is worth paying special attention to its selection. For example, you should not purchase gasoline from an unknown manufacturer, second-hand

Typically, such “gray” gasoline is of very poor quality and contains harmful impurities.

Also, do not replace the brand of gasoline with another one not recommended by the manufacturer. The fact is that the entire fuel system and power unit are assembled at the factory for a certain type of gasoline, and if you replace it, you can significantly reduce the service life of both the engine and the entire car as a whole.

The same effect can be achieved by independently altering the fuel system, carried out by the car owner in order to switch to cheaper gasoline.

Another way to prevent fuel sensor breakdowns is timely maintenance. The fact is that a fully operational fuel system produces the cleanest exhaust mixture, which, in turn, has a gentle effect on the sensor without causing damage to it.

External temperature sensor on Kalina

This device is used, as a rule, to optimize the operation of climate control and, together with a temperature sensor in the cabin, help maintain an optimal microclimate inside the car, thanks to which the trip becomes comfortable.

The outside temperature sensor is located behind the bumper radiator grille, which will need to be removed if there is a need to replace the device.

What are the signs of a bad sensor?

First of all, this is a discrepancy between the temperature on the control panel and the actual data. That is, if it’s frosty outside the window, and the device claims that it’s +15 there, this is a good reason to pay attention to it.

It is not uncommon for an error to occur that causes the detector to show -40 degrees Celsius, regardless of the weather.

In any case, if the discrepancy with the actual temperature is more than seven degrees, it is necessary to check the serviceability of the analyzer.

You should not lose sight of the entire system in which the device operates - these signs may also indicate that the wiring connecting the detector to the computer is damaged, or the contacts have oxidized.

For what reason can the Kalina ambient temperature sensor break down?

Due to its rather open location, this device can be damaged by a variety of factors:

mechanical reasons - a stone hitting the detector body can easily damage it;
low ambient temperatures;
the third reason, already mentioned above, can lead to the device breaking down - malfunctioning wiring or oxidation of contacts.

Replacing the sensor

The process of installing a new device should begin with a complete blackout of the car (disconnecting the battery);
after this, the radiator grille is removed (nothing complicated, just unscrew two bolts);
the sensor is de-energized and disconnected from its socket;

the serviceability of the device is checked and, if it breaks, a new one is installed in its place;
the wires are connected, the grille is put in place, the battery is turned back on;
All that remains is to start the engine and check the operation of the climate control.

A special device will help you verify the malfunction of this device - a multimeter in ohmmeter mode, which is used to diagnose thermistors.

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Symptoms of a problem

Under no circumstances should you ignore signs of failure of the idle speed sensor on your injection or carburetor VAZ 2109. This will make driving uncomfortable at first, but can soon cause a serious accident.

There are several main symptoms that may indicate problems with ICC:

The revolutions spontaneously begin to increase and decrease;
When turning on a cold power unit, the speed does not increase;
When using additional electrically dependent devices, such as headlights or a heater, the speed immediately begins to drop at idle;
When shifting gears or idling, the engine may stall.

This is not a complete list of possible symptoms, but they are all indirect. Therefore, to make sure that the problem lies precisely in the IAC, and not in other engine components, it is necessary to check the current state of the sensor.

Checking status

To check the current state of your IAC on a VAZ 2109 car, follow several sequential steps.

Having determined that the old idle speed sensor has already served its purpose on the VAZ 2109, it needs to be replaced. The procedure is completely doable without outside help.

Removing the IAC

How to check the outside air temperature sensor on LADA

On all modern LADA cars, depending on the configuration, an external air temperature sensor can be installed, which transmits readings to the instrument panel. If the instrument cluster shows incorrect outside temperature values, then this sensor may be faulty. Before replacing, check it with a multimeter.

Where is the air temperature sensor located?:

on Lada Granta/Kalina/Priora in the lower cross member of the body (photo);
on Lada Vesta/XRAY in the lower left corner of the engine cooling radiator deflector (photo).

CONTROL UNIT FOR VENTILATION AND HEATING SYSTEM LADA KALINA

Ventilation and heating system control unit: i — air temperature regulator; 2 — fan operating mode switch; 3 — air flow distribution regulator; 4— air recirculation control lever; 5 - rear window heating switch

The intensity of the air supply into the cabin is regulated by turning the handle of the fan operating mode switch. This turns on one of four fan speeds.

By turning the switch handle clockwise, we increase the fan rotation speed.

The position of the flow distribution control handle sets the following directions of air flow in the cabin:

By turning the handle of the air temperature regulator, we change the temperature of the air entering the cabin. To increase the air temperature, turn the regulator handle to the left, to the red sector of the scale, and to decrease the air temperature, turn to the right, to the blue sector.

The air recirculation mode (stopping the flow of outside air into the cabin) is recommended to be used when you need to quickly lower or increase the air temperature in the cabin, as well as when driving in a dusty area or in dense traffic to prevent exhaust gases from entering the cabin. The recirculation mode can only be turned on for a short time, since this does not allow fresh air to enter the cabin and the windows may fog up. To turn on the air recirculation mode, move the air recirculation control lever to the extreme right position. To allow outside air to enter the cabin, move the lever to the extreme left position.

The directions and intensity of air flows through the side and central deflectors of the ventilation and heating system are regulated by corresponding rotation of the guide vanes and changing the position of the deflector flaps until they are completely closed.

Central deflectors of the ventilation and heating system:

1 — handwheel for adjusting the direction of air flow left and right; 2 handwheel for adjusting the flow intensity through the deflectors (when rotating up, the damper opens, down, it closes)

The direction of air flow through the deflector up and down is adjusted by pressing on the top or bottom of the deflector.

The directions and intensity of the air flow through the side deflectors of the ventilation and heating system are regulated in almost the same way (the flow intensity adjustment handwheel turns left and right).

Video on the topic “Lada Kalina. VENTILATION AND HEATING SYSTEM CONTROL UNIT"

Quick repair of the heater regulator on the Lada Kalina

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Changing the outside air temperature sensor

The air temperature sensor is located at the bottom of the front bumper, but you won’t be able to remove it right away; you’ll have to do some more work. More on everything below in order.

First you will need to unscrew the lower grille of the front bumper, which is attached to 2 screws:

Shown below with magnification for a better understanding:

After both bolts are unscrewed, you can begin to remove the grille, first using a flat-head screwdriver to pry the grille from above and remove it from the latches:

After that, on the right side inside we find this part, which will be the sensor. You need to pull it a little to the right and remove it from its seat:

And then pull it out along with the wire, as shown in the photo below:

To replace the air temperature sensor, you need to disconnect it from the plug with the power wires, for which you need to press the latch and pull the plug to the side:

Now everything is ready, you can safely make a replacement by first purchasing a new part:

We perform the installation in reverse order, after which we check the functionality of the new part.

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Installation

You will need : buy a temperature sensor (catalog number: 21150-3828210-00, 21150-3828210-02 or 21150-3828210-03, approximate price - 200 rubles), protective corrugation 3 meters and 3 meters of wires. Find out the model and firmware version of the instrument cluster, it should be 2190-3801010-20 (firmware 90 or 91) or 2192-3801010-20 (firmware 06 or 07). On other versions, the operation of the sensor is not guaranteed (it needs to be flashed).

Procedure:

We attach the outside air temperature sensor to its standard place behind the bumper, slightly above the towing eye (it is not necessary to remove the bumper).
We stretch the wires from it along the hydraulic corrector hoses, fastening the corrugation with the wires with plastic clamps.
From the engine compartment to the passenger compartment we pull the wiring through the hole in the engine panel. Inside, the wires will appear above the clutch pedal.

Design, principle of operation

The design of this sensor includes a thermistor - a resistor that changes resistance depending on the temperature surrounding it. This thermistor is placed in a metal case with a thread applied to it. A tail section made of plastic is connected to this body. This part contains contacts for connecting wiring. One contact is positive and it comes from the electronic unit, the second is negative and it is connected to ground.

In order for the thermistor to work, a voltage of 5 V is constantly applied to it. This voltage is supplied to it by the electronic unit through a resistor having a constant resistance. Since the coolant temperature sensor thermistor has a negative temperature coefficient, as the temperature increases, its resistance will decrease, and the voltage supplied to it will also decrease. Based on the drop in this voltage, the electronic unit calculates the engine temperature and also displays its value on the dashboard.

The exact installation location of this temperature sensor differs from car to car, but only slightly. It can be installed in the cylinder head near the thermostat housing, or on the thermostat housing itself. It must be located near the outlet pipe through which the liquid flows into the radiator. It is located near this pipe in order to transmit accurate temperature data.

Connection

Procedure:

We insert one wire into the black block of the dashboard between the pink and black and white wires.
We connect the other wire to ground using a screw under the panel.

We check the presence of outside temperature readings on the display when switching modes. We perform assembly in reverse order. In the comments, leave the versions of your panels on which you managed to install a temperature sensor.

The installation of DTNV is also shown in the video:

Do you know how easy it is to change the interior of your car using vinyl film?

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Replacing the device

Sooner or later, everything falls into disrepair, and the coolant sensor in the Lada Kalina also faces the same fate.

If any problem does occur, the device cannot be repaired; it is simply replaced. But don’t worry about this, this procedure is not complicated, it can be done independently, or you can turn to professionals for help.

If you are sure that the problem is still in the coolant sensor, proceed with replacement

. First you need to drain the coolant, then remove the air filter. Next, the plastic clip opens and the sensor harness connector is separated. After this, the element can be easily removed from the thermostat housing. Installing a new device occurs the other way around: the element is first screwed into place where it should be, and only then fixed with all the clamps. The latest thing is to replace the antifreeze.

Naturally, when performing actions, you must follow all safety rules and be careful not to harm your property or yourself. As you can see, the procedure is actually not complicated.

, but if after this, malfunctions are observed in the operation of the car, and the engine in particular, it is worth contacting a service station and completely checking other systems.

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Outside temperature sensor viburnum

The air temperature sensor is located at the bottom of the front bumper, but you won’t be able to remove it right away; you’ll have to do some more work. More on everything below in order.

First you will need to unscrew the lower grille of the front bumper, which is attached to 2 screws:

Shown below with magnification for a better understanding:

After both bolts are unscrewed, you can begin to remove the grille, first using a flat-head screwdriver to pry the grille from above and remove it from the latches:

After that, on the right side inside we find this part, which will be the sensor. You need to pull it a little to the right and remove it from its seat:

And then pull it out along with the wire, as shown in the photo below:

To replace the air temperature sensor, you need to disconnect it from the plug with the power wires, for which you need to press the latch and pull the plug to the side:

Now everything is ready, you can safely make a replacement by first purchasing a new part:

We perform the installation in reverse order, after which we check the functionality of the new part.

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Comments 16

GUYS, STUPID QUESTION: WHERE DOES THE SENSOR ATTACH? PLUGGED EVERYTHING IN WORKS JUST HANGING IT IS NOT GOOD DOES IT HAVE ANY LEGAL PLACE?

There is a regular place where such a loop sticks out. If you want, attach it to a plastic clamp anywhere, just not to the radiator and other hot parts))))

This happened too, I didn’t understand it either. Also Standard.

Hello! was there a wire?

It doesn't come out of the harness anywhere. In my case, I need to re-stretch it.

I had such a trick yesterday, the car is May 14th, mileage 2800, standard, the on-board engine is always set to fuel consumption. And so, yesterday I started it and I don’t understand, it shows the street temperature, the readings only appeared yesterday. Then it happened like this, for the first minute, while I was surprised, it showed 10′ But then for 2.5 hours it showed something similar to the truth -1′ -2′ I called the engineer if they would fix this position. Today I went out just for fun to look at 0″ on the street, but it shows 13 -15 In general, they also stuck a sensor in me

It was so. Norma 027. I took it home from the salon after purchase. It was raining, the computer showed either -32 or -23. A couple of days later it also showed three hyphens, then the item disappeared completely. I thought about showing it to the dealer at MOT, but I looked at the brochure with the equipment. There shouldn't be a sensor there at all. Actually, he wasn’t there. But there was a connector. I bought a sensor for 110 rubles, inserted it, the item with the temperature appeared on its own, it shows everything normal.

There was similar garbage, the next day I found a wire with a connector sticking out under the bumper. I went to the OD, they said “your sensor was probably stolen or was knocked off by a jet at the car wash,” they installed the sensor for 150 rubles, it seems. As a result, on the “norm” configuration I now have an outside temperature indicator. But I still don’t see the engine temperature in the original dashboard, even after reflashing it according to the AvtoVAZ recall (expressed in “tirik-tik-tik” turn signals). We have to use the “staff”. By the way, the engine does not warm up above 78 in winter - as I understand it, this is a global problem?