Modern domestically produced cars are equipped with various controllers and sensors that ensure full operation of the car. If one of the devices fails, this can lead to incorrect operation of the nodes. From this material you can find out what the Priora and Kalina fan switch is and what malfunctions are typical for it.
If the Lada Kalina cooling fan fails, you should immediately find the cause and eliminate it. If the car “boils”, this can lead to fatal consequences. In the best case, a breakdown of the gasket, and in the worst case, a deflection of the cylinder head, which will lead to its forced replacement. So, this unit should be monitored and diagnosed regularly.
How to find the reason
Start checking with the electric motor. To do this, disconnect the electrical wires from it and connect it directly to the battery, observing the polarity. If the fan does not turn on, that is the problem. If it works, you need to look for another reason.
Check all contacts on the connectors, and then the relay and fuse. They are located in an additional mounting block, which is located to the right of the instrument panel near the lower heater air duct.
The fuse (50 A) can be checked with a tester; it is better to take a relay that is known to be working and install it in the appropriate socket. If the problem is not solved, move on.
Checking the temperature sensor. To do this, warm up the engine to operating temperature, turn it off and disconnect the sensor. It is located on top of the thermostat housing. When the sensor is disabled, the controller must independently start the fan to operate continuously.
Start the engine and wait for the fan to turn on. If the coolant temperature has reached a critical value and the fan does not turn on, you need to look for a break in the electrical wiring.
Do I need to change the fan?
If you have determined that the problem is in the fan itself, or rather in its electric motor, you can try to repair it. Most often, it stops working due to failure of the brushes, or due to problems with the rotor bearings. Less often the collector becomes unusable or a break occurs in the winding.
If the fan cannot be repaired, it must be replaced.
Under no circumstances should you drive a car with a non-functioning fan. Overheating of the engine will inevitably lead to the destruction of the rubber hoses of the cooling system, gaskets, and also threatens the failure of parts of the piston group.
Why do you need DVV?
When driving for a long time in a low gear or idling for a long time, the radiator does not receive sufficient airflow. As a result, the coolant temperature rises sharply and the liquid may boil. Frequently occurring engine overheating can cause premature wear of the piston group of engine cylinders. When exposed to high heat, the surfaces of rubbing parts begin to lose their strength characteristics, which causes their destruction. In the end, this will lead to a major overhaul of the engine, accompanied by large financial costs.
DVV Kalina:
To protect the car from such phenomena, the radiator is equipped with a fan, which, through forced airflow, sharply lowers the temperature of the liquid in the engine cooling system. The fan will turn on when the temperature approaches the boiling threshold of the antifreeze. The function of the sensor is not limited to regulating the operation of the electric fan. The fact is that information about the temperature of the antifreeze, entering the “brain center of the car” - the ECU, is processed and converted into commands that adjust the proportional composition of the fuel mixture, the moment of spark formation and other operating modes of engine instruments. The productive operation of the injection engine of the Lada Kalina largely depends on the serviceability of the internal combustion engine.
Is there a need to replace the fan?
Having discovered that the problem lies in the fan or electric motor, you can try to repair this element. Mostly, on Kalina 1.6 (8 valves) the cooling fan does not turn on when the brush breaks or the rotor bearings become unusable. Less often, the problem should be looked for in the collector or winding break.
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If the device cannot be repaired, the element must be replaced. Do not attempt to drive with a broken fan. Overheating of the engine will automatically lead to rupture of hoses, rubbing of gaskets and malfunction of the pistons.
Looking for a reason
Start checking with the electric motor. To do this, disconnect the electrical wires from it and connect it directly to the battery, observing the polarity. If the fan does not turn on, that is the problem. If it works, you need to look for another reason.
Check all contacts on the connectors, and then the relay and fuse. They are located in an additional mounting block, which is located to the right of the instrument panel near the lower heater air duct.
The fuse (50 A) can be checked with a tester; it is better to take a relay that is known to be working and install it in the appropriate socket. If the problem is not solved, move on.
Checking the temperature sensor. To do this, warm up the engine to operating temperature, turn it off and disconnect the sensor. It is located on top of the thermostat housing. When the sensor is disabled, the controller must independently start the fan to operate continuously.
Start the engine and wait for the fan to turn on. If the coolant temperature has reached a critical value and the fan does not turn on, you need to look for a break in the electrical wiring.
Do I need to change the fan?
If you have determined that the problem is in the fan itself, or rather in its electric motor, you can try to repair it. Most often, it stops working due to failure of the brushes, or due to problems with the rotor bearings. Less often the collector becomes unusable or a break occurs in the winding.
If the fan cannot be repaired, it must be replaced.
Under no circumstances should you drive a car with a non-functioning fan. Overheating of the engine will inevitably lead to the destruction of the rubber hoses of the cooling system, gaskets, and also threatens the failure of parts of the piston group.
Diagnostics of the stove operation
Heater radiator
The operation of the heating system should be periodically monitored. Such a check can be carried out as follows.
- With the engine running, check the operation of the stove without heating the air in all fan speed modes.
- We control the change in the direction of air flow when adjusting the direction switch.
- When the engine reaches operating temperature, check the degree of heating of the air entering the cabin by moving the regulator to the red zone.
- We check the operation of the heating system dampers by periodically moving the regulator from the red zone to the blue sector. The degree of air heating should change.
The owner of the car may not immediately understand that the stove is leaking. The carpets in the cabin are not necessarily wet and a persistent smell of antifreeze does not always appear. This is explained by the possible rapid evaporation of the leaking liquid. The stove in the Lada Kalina does not have pipes leading into the cabin that could wear out.
Description
As you know, any Priora and Kalina have a cooling system that ensures normal engine operation and helps prevent overheating. One of the devices that allows you to cool the power unit is a fan sensor, upon the signal of which the ventilation device should turn on.
On Kalina, this controller is designed to activate the fan when the engine temperature reaches a certain point. Thanks to the fan, which must turn on based on a signal from the controller, the engine temperature will always be normal and will not exceed the permissible threshold. If the device does not work, the fan will not turn on, and the engine may overheat.
Sensor connection diagram in the cooling system
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172083 Articles 3102-1303009**, 3102-1303009 Manufacturer NO NAME Catalog group: ..Cooling system Engine Width, m: 0.05 Height, m: 0.04 Length, m: 0.1 Weight, kg: 0.17
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- GAZ-3102 radiator pipe for sensor D=38mm (metal) Article number: 3102-1303009**, 3102-1303009 Order code: 172083 155 ₽ or place an order by calling 8 800 6006 966
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The main reasons why the radiator cooling fan does not work
Let's look at the main options and places to look for faults:
- Thermostat.
Thermostat removed from Lada Kalina
If it fails, this is the reason why the cooling fan does not work correctly . To diagnose this malfunction, you should touch the lower pipe. If it is cold, then the thermostat is dead. Many Kalina car owners are accustomed to this phenomenon, since it often breaks down, and they carry a spare one with them.
- If it's not the thermostat, then the next step is the fuses. You need to make sure that they are working and all controllers too. The easiest way is to test them using a tester or ohmmeter. The fuse diagram is here.
The relay box with the fan fuse is located under the instrument panel console, next to the controller. The fan fuse has a capacity of 50A, it is number 3 . Fan relay number 1 .
Relay and fuse box
If the fuse is alive, then you will have to remove the additional fan control unit. To do this, it is worth moving the warm air duct and using a 10 mm wrench to unscrew the fastenings of the unit. Now you can get it freely. It has two relays that are responsible for turning on the fan and for high speeds. Let's diagnose both.
- Now, we can move on to the darkest option - we climb under the hood and “ring” the contact wires of the fan itself. Of course, there may be a break or break in the wire, but there is nothing worse than a burnt winding inside the fan. Most likely the fan in this case will need to be replaced.
- Another reason for the fan not turning on may be a broken thermostat sensor . In order for the fan to start in emergency mode, you will have to remove the connectors from it. You can check the sensor by removing the thermostat and placing it in a pan of hot water; the thermostat should open.
- The last reason why the fan may not work is a break in the switching circuit itself.
Electrical circuit diagram of the cooling fan
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Replacing the cooling fan Lada Kalina
To replace the cooling fan, it is not necessary to go to a service station. You can do this without much difficulty on your own.
Required tools:
- head with ratchet or socket wrench 10;
- spanner or open-end wrench 8;
- screwdriver with Phillips bit;
- pliers.
Work order
- Place the car on a level surface.
- Raise the hood, disconnect the ground wire from the battery.
- Using a 10mm wrench, unscrew the two air filter mounting bolts.
- Disconnect the mass air flow sensor connector by pressing the latch.
- Disconnect the purge valve connector located on the air filter housing.
- Using a screwdriver, unscrew the bolt of the air duct fixation clamp and remove the corrugation.
- Unscrew the 4 screws securing the air filter cover.
- Remove the cover and remove the filter element.
- Using a size 8 wrench, unscrew the nut securing the air intake and remove it.
- Using a size 10 wrench, unscrew the two nuts securing the fan casing on the right in the direction of travel of the car, and then with a size 8 wrench, unscrew the two nuts on the left.
- Disconnect the fan power connector.
- Carefully, so as not to damage the radiator fins, remove the fan along with the housing.
- Using a 10mm wrench, unscrew the 3 bolts securing the electric motor and remove it from the housing.
- Install a new electric motor with impeller in its place.
- Screw the casing assembly with the fan to the radiator.
- Connect its connector.
- Carry out the rest of the installation work in reverse order.
DIY fault repair
We will not talk about solving problems such as failure of fuses or the sensor itself. Everything is so simple here - failed elements are removed from their installation locations and replaced with new ones.
Separately, it is necessary to highlight the replacement of the ventilation unit - read about this below:
- So that during the repair process you do not have to dismantle the radiator, do everything carefully, since there is a possibility of damage to other elements.
- Open the hood and disconnect the battery. Remove the air filter.
- Having done this, you can dismantle the radiator grille.
- Next, you will need to unscrew the top mountings of the optics - the right and left lights.
- Using a 10mm wrench (it will be more convenient to take a socket wrench), you will need to remove the upper front panel.
- After these steps are completed, you will need to disconnect the plugs that are connected to the ventilation unit. Having done this, the wires can be twisted a little.
- Next, using a wrench, you will need to unscrew the four screws that secure the device to be replaced. The arrows in the photo indicate the screws that secure the assembly; they will need to be unscrewed.
- Only after the unit is freed will it be necessary to dismantle it and replace it with a new one. After removal, just in case, clean the connectors themselves so that in the future you will not be bothered by the problem of poor contact. Further assembly of the system and installation of all elements is carried out in the reverse order.
How to replace a fan
Having understood exactly why the cooling fan of the Lada Kalina does not work, you should replace the faulty element. With the proper skills and dexterity, you can perform the repair yourself. The tools you need to prepare are pliers, a screwdriver, wrenches 8 and 10.
First, we place the vehicle on a level surface. Then we lift the hood and disconnect the system from the battery. Using a wrench, disconnect the air filter mounts. Next, you need to disable the mass air flow sensor (just press the latch) and the purge valve, which is located on the air filter housing. Unscrew the clamp bolt and remove the corrugation.
Remove the air filter cover, remove the filter element, and dismantle the air intake. Then we proceed to attach the fan casing and disconnect the power supply to the fan. Having done everything correctly, you can dismantle the fan. We remove the electric motor and then replace it with a new element. Then we put everything back together.
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Finally, it is worth checking the functionality of the device. We start the engine and then warm it up for 3-5 minutes. The fan should turn on during this time. There is no need to turn off the car as soon as the fan starts spinning - you should wait until the device turns off automatically.
What if the fan completely stopped working?
To determine the cause of such a malfunction, you first need to check the condition of the fuse in the electrical circuit. It can be found on the side console, near the passenger seat. It is hidden under the deflector cover. By unscrewing the screw, the cover can be easily removed and the fuse will be available for examination.
To remove the entire safety block and connected relays, the mount must be released. You can't do this without wrenches. You need to remove the unit carefully without haste, as you can damage the wires that are connected to it. Only the single fuse of the unit is responsible for the operation of the fan.
If the fuse is intact, it is necessary to check the operation of the relay that powers the fan motor. There are two such relays installed. The left one turns on low fan speed. And the one located on the right is responsible for the high speed of its operation.
Another problem that relates to the cooling fan relay is that the cooling fan continues to operate when the ignition is turned off. This may drain the battery. “Kalina” then simply won’t start. The main reason is sticking contacts. The block is exposed to antifreeze leaking from the radiator installed above the stove.
When the relays and fuses are working properly, you need to check the operation of the temperature sensor. It is he who orders the fan to start working. This sensor is located on the right side of the radiator tank.
To check its functionality, you need to remove the plug connector, take a jumper, and use it to short-circuit the connector terminals. The fan turning on indicates that the sensor is in good condition. If the fan does not react at all, then before changing the sensor, you need to check the functionality of the fan motor. To do this, the electric motor terminals must be connected to the battery contacts. The engine should start working. In case of failure, you will have to install a new electric motor.
