Purpose of the sensor
Coolant temperature sensor (CTS) Grants are necessary not only for measuring the temperature of antifreeze, but also for other purposes. For example, another function of the sensor is to participate in adjusting the fuel mixture, namely, based on the resistance readings of the sensor, the ECU makes a change to the fuel mixture.
When the car is cold and its coolant is low, more fuel is needed to start the engine in such weather, so the ECU, receiving information from the sensor that the fluid is cold, enriches the fuel for easier starting and efficient warming of the car.
Likewise, and vice versa, when the engine is warm, the engine requires less fuel to start; therefore, the engine can be started with a leaner mixture, thereby saving some amount of fuel.
The operation of the sensor is easy to notice when starting a cold engine, when the speed of a newly started engine is slightly higher than idle, around 1300 rpm.
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.
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.
Checking the DTOZH
The sensor is checked using a multimeter and a glass of boiled water with a thermometer.
To do this, set the switch on the multimeter to the resistance measurement parameter.
The probes of the multimeter are connected to the sensor, and the sensor itself is placed in a glass of boiling water.
Next, a thermometer is dipped into the glass to measure the water temperature.
The water temperature reading should be compared with the resistance reading of the multimeter and compared to the original table.
If the readings agree, then the sensor is working.
New instrument panel
New instrument panel combination (from June 16, 2014)
If your car was manufactured after June 15, then the engine temperature should be displayed in the on-board computer. If it is not there, then you need to reflash the instrument panel.
We found ways to save money. And putting an additional indication is a collective farm!
Where to buy a button?
Which button? If on-board instead of a button, then in almost any auto store that specializes in domestic cars!
You are probably talking about STATE1? So, my experience shows that STAT1 never shows the temperature accurately, sometimes the error ranges up to 13 degrees in the direction of underestimation!
Let us remind you that on the website you can find out what the real fuel consumption of the Lada Grant and Lada Kalina 2 should be.
I installed the additional indicator at a car dealership for 2500 rubles, purchasing it on June 9, 2014. Eh, I would have purchased the shipment after June 15, if only I had a computer on board)
I installed the indicator in the cabin for 2500 rubles on June 9, 2014, a necessary thing
Damn you are needed)) they write the red price is 600. ) And why are you lost) stop by and see the guys, they will stick you a flatbed for 35) I think they won’t refuse such a necessary person!)
Soon you will probably have to buy seats separately, like mats, armor. On the 14th, everything was there, engine temperature, ambient air temperature, battery charging. I bought a Lada Granta, there is nothing.
The same bullshit generally blew my mind at first, also after 14 - oh, on a grant, I moved to an empty one, there wasn’t even a puff filter, damn economists...
Where can I buy such a sensor in Moscow? I can not find
I have a grant for 13 years. I reflashed the computer a couple of times. There is no trust in him. The check lights up and displays errors for items that are not in the car. Naturally, there is no temperature sensor either. What were you thinking? Don't know. The fan is electronic and needs monitoring. And you don’t know whether it works or not. Russia in a word. We hope so. And it is not known whether the overheat sensor will work or not. It didn't seem to catch fire yet. And if it ever lights up, in any case it is not good, this is already the limit, although the cause could have been established earlier if there was a temperature sensor. Thank God I have to change the car in a year, maybe by then there will be something new.
Replacement
The sensor must be replaced after draining the coolant, but some craftsmen make replacements without draining the antifreeze.
To replace you will need:
- Antifreeze for refilling 1l;
- 13mm ratchet head;
- Open-end wrench 19mm;
- Container for draining coolant;
- Phillips screwdriver;
Once everything is prepared, you can begin disassembling the car.
Work must be carried out on a cooled engine!
Replacement process
- Remove the negative terminal from the battery;
- Remove the air filter box;
- Drain the coolant by unscrewing the plug in the block;
- Remove the connector from the sensor;
- Unscrew the sensor and remove it;
- We install a new sensor and fill the coolant;
Replacement without draining coolant
To replace without draining the coolant, simply unscrew the sensor, plug the hole with your finger and quickly install a new sensor. The loss of antifreeze with this method will be no more than 0.5 liters, but will save about an hour of time.
Old dashboard
This instrument panel was installed before June 15, 2014.
Find the engine temperature indicator here?
There is no engine temperature indicator on the old instrument panel. There is only an overheating warning light. On my previous cars, which did not have a temperature gauge, there were at least two warning lights: “cold engine” and “engine overheating”.
On the Grant, as planned by AvtoVAZ engineers, the engine should not be warmed up, and you can immediately start driving. Interesting savings. A whole battle broke out on our website in the comments about this in the article: Is it necessary to warm up the engine before driving?
Car manufacturers allow the car engine not to warm up, citing global standards to prevent environmental pollution and save gasoline.
Read more about fuel consumption standards for the Lada Granta family of cars in the article: Grants fuel consumption on the passport and in reality, what is it like?
On-board computer values on this panel (video)
Ways to solve this problem
There are several ways to solve this problem. The simplest of them is to just hammer and drive like that. Most people do just that. You can flash the instrument panel, the result will be like this.
But in this car there is a hypothetical problem of the engine not heating up to operating temperatures, although AvtoVAZ management does not consider operating temperatures below 80 degrees a problem.
More on this a little later, when my diagnostic scanner arrives from China!
Installing a separate engine temperature indicator
The easiest and cheapest way is to install a separate temperature indicator instead of the standard free button plug.
Temperature gauge installed in place of the standard plug next to the cigarette lighter
Installing such a digital indicator will not take much time.
Make it a rule to always turn off the power to your vehicle when doing any electrical work!
- You will need to remove the panel trim (if you don't have air conditioning, the ideal location would be to the side of the heated rear window button).
- Next, disconnect the ground from the battery.
Disconnect the ground from the battery
Connect the indicator to the diagnostic connector
Checking the operation of the indicator with the car running
This indicator is sold in most car stores, the cost does not exceed 600 rubles.
Viewing the temperature using a smartphone (tablet)
This method will require you to purchase a diagnostic cable that works via bluetooth. You will also need an Android device that supports bluetooth connection.
- Remove the diagnostic connector.
- Connect the diagnostic cable there.
- Install the “Torque” program or a similar one on your cell phone.
- Launch the program on your phone, start the engine and try to establish communication with the adapter.
- Once the connection is established, you can view the data that is transmitted from the sensors to the ECU.
Self-installation of outside air temperature sensor
Many VAZ car models do not have an air temperature sensor, so to increase comfort, many car enthusiasts install it themselves. This does not require any special skills, but first you should determine whether the dashboard is able to identify the readings of the new device. This is not difficult to do, and, for example, on Grant it is done as follows:
- when the daily mileage button is pressed, the ignition is turned on;
- this causes the self-diagnosis process to start, when all indicators begin to flash;
- at this time, the daily mileage calculation button must be pressed again, which will cause the version number to appear on the display - connecting a temperature sensor is supported by versions 090 and higher.
If the version supports the ability to connect a temperature sensor, you can go to the auto store to purchase it and begin the installation process. Initially, you should correctly determine the location of the outside air sensor - it should not be influenced by temperature flows from the engine. The optimal place is considered to be the space close to the radiator - it can be seen when the hood is open, there is a pin welded to the frame. It is convenient to “throw” the mass from the device onto it.
After securing the device itself, you will need to run a “plus” wire into the interior. To do this, you can use the clutch cable plug or another convenient place. After this, you will need to remove the instrument panel; you need to find the 25th contact, intended specifically for the temperature “controller” of the ambient air. The “outboard” temperature readings appear automatically in the menu. If this does not happen, the positive terminal is removed from the battery for 10 minutes. After power is restored, the temperature will appear. The installation process can be seen in the video:
