Where is it located?
The fan is located on the inside of the radiator between the engine and radiator. Bolted to the radiator housing. In luxury versions of the Lada Priora, a dual cooling radiator is installed, one for the engine cooling system, and the other for the car's air conditioning system. It should be noted that when the car reaches a critical temperature, these radiators begin to work in pairs and cool the engine more intensively.
Replacement
Replacement is quite simple if you have a car without air conditioning. In this case, you just need to unscrew a few bolts securing the fan to the radiator and remove it.
If the Priora is equipped with air conditioning, then you will have to work hard when replacing it, since there is quite a bit of space and you will need to unscrew the radiator itself, move it to the side and only then remove the fan itself.
Sources
- https://avtonomnaya-gazifikaciya.ru/priora/ne-rabotaet-ventilyator-ohlazhdeniya.html
- https://delis-avto.ru/pro-dvigatel/ne-vklyuchaetsya-ventilyator-na-priore-2.html
- https://favorit69.ru/ne-rabotaet-ventilyator-ohlazhdeniya-priora-s-konditsionerom/
- https://enginehack.ru/vse-o-ventilyatore-ohlazhdeniya-lady-priory/
- https://gil-service.ru/dvigatel/kak-proverit-ventilyator-na-priore.html
- https://o-ladagranta.ru/ne-vkljuchaetsja-ventiljator-ohlazhdenija-priora-s/
- https://ilifia-club.ru/dvigatel/ne-vklyuchaetsya-ventilyator-na-priore.html
Protection system
Since the fan is an electrical part, it must have some kind of protection against short circuits or overheating. To provide this protection, it uses a relay and a fuse, which quite often fail, resulting in the fan not working.
Priora cooling fan fuse
To protect the circuit from short circuits and overloads, a fuse is used, which breaks the circuit when it overheats or a short circuit occurs in it.
The Priora uses several fuses to protect the cooling fan circuit: power and control. The cooling fan power fuse is located under the hood in a block near the battery number F3 at 60A. The control circuit fuse is located in the fuse box under the steering column and is numbered F1 at 25A.
Priora cooling fan relay
The location of the relay depends on the vehicle configuration.
In the “NORM” configuration, the fan relay is located on the main fuse block under the steering column and has the number K1.
In the “NORM+” and “LUX” configurations, the relays are located in the engine compartment and there are 2 of them. For the right fan, relay number 3, for the left fan, relay number 5.
Priora cooling fan sensor
The cooling fan on the Priora turns on automatically when a certain temperature is reached. The coolant temperature is determined by a special sensor installed in the thermostat housing, which sends signals to the ECU when the engine temperature reaches a high temperature, after which the cooling fan turns on and begins to create an artificial air flow through the radiator.
The sensor is a simple part inside which houses a thermistor. As the temperature changes, it changes its resistance.
Design of a cooling fan on a Priora
From a constructive point of view, the product is quite simple and consists of the following elements:
- electric drive;
- plastic blades;
- relay responsible for turning on or off;
- connecting wires.
The electric drive is powered by a battery and is activated depending on the coolant temperature.
Causes of failure
Quite often it happens that the cooling fan on a Priora stops working, this may be due to the following reasons:
- The fuse has blown;
- The fan control relay has burned out;
- The fan switch sensor is faulty;
- The motor winding has burned out;
- The fan power connector has come off;
If the engine cooling fan does not work on your car, then you need to examine all possible options for its malfunction, which are indicated above.
Coolant temperature sensor (fan on) and its purpose
A temperature sensor or DTOZh is a part that is included in the engine cooling system and controls the process of warming it up. This element does not display the corresponding temperature values on the instrument panel, since another device is responsible for this action (temperature sensor on the DUTOZH arrow). DTOZH sends a signal to turn on the fan to cool the radiator (at a temperature of 98 to 107 degrees), through which liquid circulates. That is why such a device is often popularly called a fan sensor. However, its correct name is DTOZH or coolant temperature sensor.
In addition to turning on the fan, the DTOZH on the Priora performs another very important function. It consists of adjusting engine operation by changing the composition of the fuel-air mixture and setting the ignition timing. This is achieved by connecting the sensor to the electronic control unit. A corresponding signal about the engine temperature is sent to the ECU from the DTOZH, and depending on the incoming readings, the engine operation is adjusted. It looks something like this:
- When starting the engine cold, the ECU receives a signal that the engine has not warmed up to operating temperature (i.e., cold).
- The control unit makes a decision on preparing fuel assemblies in a certain proportion. To do this, a signal is sent to the idle speed regulator, which opens the XX valve to the appropriate distance (a certain number of steps), which leads to an increase in crankshaft speed. To quickly warm up the engine, more fuel is supplied through the injectors, and the ignition angle is also adjusted.
- When the coolant temperature rises to a certain value, the engine speed is reduced and the mixture composition is adjusted.
If on carburetor cars only liquid temperature sensors are used to display information on the dashboard, and they do not affect the operation of the engine, then on modern injection engines two types of devices are installed. If the coolant sensor is faulty, the engine will most often start and it will run, but the fuel assemblies are prepared according to average values in emergency mode (the computer, if there is no signal from the DTOZH, takes the temperature of the internal combustion engine as 0 degrees). This also turns on the fan, which cools the liquid in the radiator to eliminate the possibility of overheating the engine (since the ECU does not see the actual engine temperature).
Typical signs of a device malfunction are the following:
- unpredictable operation of the cooling fan. If a break occurs in the electrical circuit, which happens due to damage to the supply wire or sensor contacts, the fan will operate continuously;
- floating speed, since the faulty element gives incorrect signals, as a result of which the ECU will strive to adjust the optimal mixture ratio;
- The Check Engine light comes on, indicating an engine malfunction.
It is important not to confuse the coolant temperature sensor on the Priora with the element that is responsible for displaying information about the temperature of the internal combustion engine on the instrument panel. These are two different sensors that have a similar operating principle, but are responsible for performing different functions. If there is a malfunction of the device that displays the engine temperature value on the instrument panel, the CHECK indicator will not light up.
This is interesting! On the Priora, the DTOZH has two contacts, and there is only one sensor per arrow. The operating principle of the devices is the same, and the only difference between them is that on the DTOZh the resistance is measured between the terminals, and on the pointing device - between the body and the contact.
see also
Comments 47
People, help me, my fan doesn’t turn on, I thought it was the sensor, but no, it still doesn’t turn on, but when you remove the connector from the sensor, it turns on, and if you put it back on, it doesn’t turn off, what should I do, and maybe it’s because of the cap on the expansion valve of the Priora I have?
Could be a relay or fuse
What specific wire is this?
problem solved! I changed the wire to ground and everything worked)) thank you all so much, friends!
Clean and check regularly - the effect will not last long! neither nail nor rod!
problem solved! I changed the wire to ground and everything worked)) thank you all so much, friends!
Don’t be stingy and install an on-board engine, there are a lot of benefits from it and you can set the Carlson switch-on temperature and reset errors and a lot of other things...
And the bad mass is to blame. I also crawled and changed... After changing the mass, the side panel and the tidy show a difference of a couple of degrees between themselves
Block in the engine compartment
The power fuse box is located in the engine compartment under the hood, near the left strut support. To get to it, you need to open the lid by prying the latch.
1 (30 A) - engine control system circuit . If there are problems with the electronic control unit, short circuits or other malfunctions, this fuse may blow out.
2 (30 A) - vehicle on-board circuit . 3 (40 A) - vehicle on-board circuit .
4 (60 A) - generator circuit.
5 (50 A) - electric power steering circuit.
6 (60 A) - generator circuit.
In case of any problems, it is important not to panic, to think soberly and logically. The most important thing is to diagnose and establish the cause of the breakdown. If you don’t have enough experience or nerves, it’s easier to sign up at the nearest car service center if it has a competent electrician.
I hope this article will help you deal with electrical problems and quickly fix any Priora malfunctions. If you have any experience or information, please leave a comment below, useful information will be added to the article.
Posts 1 to 20 of 34
1 Topic from Goodfree 2014-09-09 13:12:37
- Goodfree
- New member
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- Registration: 2014-06-18
- Messages: 82 Thanks : 8
- Auto: 21102
Topic: Resolved: Radiator fan won't turn on
The bottom line is that the fan does not turn on. Manually (via a button and pulling out the chip from the sensor in the thermostat) - everything works great. What could be the reason? I installed a new sensor, but is there any point in checking the fan relay? (under the cladding on the right). After all, it seems to work, but not through the ECU signal.
2 Reply from igorek 2014-09-09 13:38:47
- igorek
- Brother-in-law
- Inactive
- From: Bryansk region g Starodub
- Registration: 2013-05-05
- Messages: 416 Thanks : 191
- Car: VAZ-21102 1.5i-8V Bosch MP7.0H
Re: Resolved: Radiator fan does not turn on
Gudfree , It’s clear that it’s not included, what doesn’t suit you? ileger than the switch but on the verge of boiling away the tasol? There is little information, there are a lot of problems with this malfunction, there is no pressure in the system, the thermostat is not working. When the chip is disconnected, it turns on. This means that the circuit and control of the cooling fan are working properly, look for the cause in the thermostat in the expansion tank cap. It is also possible that the temperature sensor on the instrument panel is lying. misleading.
3 Reply from Aleksandr.21124 2014-09-09 15:24:40
- Aleksandr.21124
- Brother-in-law
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- Registration: 2014-08-11
- Messages: 392 Thanks : 169
- Car: VAZ 21124
Re: Resolved: Radiator fan does not turn on
The fan relay costs a pretty penny. Under the cladding on the right there are three of them. The problem may be a bad mass. Unscrew and clean all contacts connecting the ground to the body,
behind the left headlight
Weight under the gas pedal on the right bolt (weight of the shield)
4 Reply from Goodfree 2014-09-10 08:02:27
- Goodfree
- New member
- Inactive
- Registration: 2014-06-18
- Messages: 82 Thanks : 8
- Auto: 21102
Re: Resolved: Radiator fan does not turn on
Gudfree , It’s clear that it’s not included, what doesn’t suit you? ileger than the switch but on the verge of boiling away the tasol? There is little information, there are a lot of problems with this malfunction, there is no pressure in the system, the thermostat is not working. When the chip is disconnected, it turns on. This means that the circuit and control of the cooling fan are working properly, look for the cause in the thermostat in the expansion tank cap. It is also possible that the temperature sensor on the instrument panel is lying. misleading.
The cover is new, the sensor is new. How does the thermostat operate and the fan turn on?
5 Reply from igorek 2014-09-10 11:12:57
- igorek
- Brother-in-law
- Inactive
- From: Bryansk region g Starodub
- Registration: 2013-05-05
- Messages: 416 Thanks : 191
- Car: VAZ-21102 1.5i-8V Bosch MP7.0H
Re: Resolved: Radiator fan does not turn on
How does the thermostat operate and the fan turn on? Gudfree , on the stability of the engine temperature and the timely switching on of the cooling fan, let’s say this.
6 Reply from Goodfree 2014-09-10 12:12:32 (2014-09-10 12:13:07 edited by Gudfree)
- Goodfree
- New member
- Inactive
- Registration: 2014-06-18
- Messages: 82 Thanks : 8
- Auto: 21102
Re: Resolved: Radiator fan does not turn on
How does the thermostat operate and the fan turn on? Gudfree , on the stability of the engine temperature and the timely switching on of the cooling fan, let’s say this.
Misprinted: How does the operation of the thermostat depend on turning on the fan?
7 Reply from Patroclus 2014-09-10 13:21:21
- Patroclus
- Connoisseur
- Inactive
- From: RUSSIA
- Registration: 2014-07-05
- Messages: 637 Thanks : 104
- Car: Lada Priora 2171 Wagon: VESTA
Modernization
If you want to improve the operation of your radiator fan on the VAZ 2109, we offer the appropriate instructions.
To upgrade, you will need to install a second sensor and modify the system somewhat.
- The standard power sensor will be responsible for the operation of the fan at maximum speed.
- An additional sensor will include a reduced speed. It is installed at the top of the cooling system.
Now let’s talk more specifically about how to organize all this.
- Take a temperature sensor whose response temperature is similar to the standard regulator.
- Install it in the upper pipe fitting to the radiator.
- To mount the element, you will need a pair of washers and a nut. Be sure to lubricate the washer with sealant to prevent leakage from the installation hole.
- Buy a resistor to install on the stove fan. It has several outputs, so if desired, you can make several operating speeds.
- It is necessary to make an additional control circuit. Through it, less voltage will be supplied to the motor winding.
- The temperature sensor located in the upper part of the cooling system is responsible for turning it on.
- It is better to do control not by plus, but by weight.
- The system will work through a button in the cabin. To the left of the dashboard there is a grille with two plugs. Cut out one of them and set it to turn off on two modes. You can take the heater switch from a VAZ 2107.
- In the first position the low frequency will be switched on, and in the second – the maximum speed.
- One common wire is fed to the minus.
Such modernization is not provided for by the design of the VAZ 2109. These are modifications made by car enthusiasts. Therefore, installing a second sensor is entirely your personal responsibility.
The fan is an important component of the cooling system of VAZ 2109 injection and carburetor engines. If you wish and have time, you can easily replace or repair it yourself.
For owners of classic cars it becomes one of the important problems. In addition to various nuances that lead to overheating, a non-working radiator fan almost always causes boiling on a hot day. Why it may not turn on and how to find the reason, you can learn more about this in this publication.
Thermostat malfunction
You should also keep an eye on the thermostat. If it does not work as expected, the power unit will not be able to establish the optimal warm mode. To check the functionality of the thermostat, proceed as follows:
Action
If the pipe heats up much earlier, most likely the thermostat is stuck in the position where the Antifreeze is circulating in a large circle. The thermostat is an element that cannot be repaired; it is simply replaced.
Source
