The cooling fan on the Lada Kalina does not turn on

Modern domestically produced cars are equipped with various types of controllers and sensors that ensure full functionality of the car. If one of the devices fails, this may cause the units to malfunction. From this material you will be able to 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 machine boils over, it can have fatal consequences. At best, the gasket is damaged, and at worst, the cylinder head is deformed, which will lead to its forced replacement. Therefore, it is worth monitoring this device and conducting regular diagnostics.

How to find the reason

Let's start by checking the electric motor. Disconnect the electrical wires and connect directly to the battery, observing the polarity. If the fan doesn't start, that's the problem. If it works, you need to look for another reason.

Check all contacts on the connectors, as well as behind the relay and fuse. They are located in an additional mounting block, which is located on the right side of the instrument panel next to the lower heater duct.

The fuse (50A) can be checked with a tester; it is better to take a working relay and install it in the appropriate socket. If the problem is not resolved, continue.

Check temperature sensor. Warm up the engine to operating temperature, stop the engine and disconnect the sensor. It is located on the top of the thermostat housing. When the sensor is disabled, the controller must independently start the fan for continuous operation.

Start the engine and wait until the fan starts. If the coolant temperature has reached a critical temperature and the fan does not turn on, look for a broken wiring.

Do I need to change the fan?

If you determine that the problem is in the fan itself, or more precisely in its motor, you can try to fix it. Most often it stops working due to broken brushes or problems with the rotor bearings. The commutator or winding crack is rarely damaged.

If the fan cannot be repaired, it must be replaced.

Under no circumstances should you drive a vehicle with the fan not working. Overheating of the engine inevitably leads to the destruction of rubber hoses of the cooling system, seals, and can also cause failure of the piston group elements.

Repair of the cooling system on Lada Kalina

On the Lada Kalina car, after the antifreeze temperature reaches 95 degrees, the fan automatically turns on. If it does not turn on, the running engine begins to quickly gain temperature. You have to stop, otherwise the pistons will jam and the engine will break down.

Functional elements of the Kalina cooling system

Large radiator. Installed in the front part of the Lada Kalina to cool the fluid and reduce the temperature during engine operation. Cooling occurs due to a strong air flow of cold air.
Cooling Fan. Installed directly on the radiator. Thanks to the fan, the liquid cools much faster.
Stove radiator. Due to the warm air, the car interior warms up.
Expansion tank. Since one of the properties of coolant is the ability to respond to temperature fluctuations, a special tank is installed. As antifreeze expands or contracts, it compensates for the amount of coolant in the system.
Water pump. A special device that circulates coolant throughout the vehicle.
Thermostat. A very important detail, despite its miniature size. The thermostat regulates the flow of fluid that moves through the engine radiator. The thermostat maintains the optimum operating temperature of the engine.
Temperature sensor. When the temperature rises above normal, the sensor signals this fan relay to turn on instantly.

Is there a need to replace the fan?

Having determined that the fan or electric motor is faulty, you can try to repair it. Firstly, in Kalina 1.6 (8-valve), the cooling fan does not turn on if the brush is damaged or the rotor bearings fail. Less often, the problem should be in the distributor or winding breakage.

If the device cannot be repaired, the component must be replaced. Do not attempt to drive a vehicle with a damaged fan. Overheating of the engine automatically leads to rupture of hoses, wear and improper use of seals. action of the pistons.

Looking for a reason

Start checking with the electric motor. To do this, disconnect the electrical wires from it and connect directly to the battery, observing the polarity. If the fan doesn't start, that's the problem. If it works, you need to look for another reason.

The fuse (50A) can be checked with a tester; it is better to take and install the relay. into the appropriate slot. If the problem is not resolved, continue.

Check temperature sensor. To do this, warm up the engine to operating temperature, turn it off and disconnect the sensor. It is located on the top of the thermostat housing. When the sensor is disabled, the controller must independently start the fan for continuous operation.

Start the engine and wait until the fan starts. If the coolant temperature has reached a critical temperature and the fan does not turn on, look for a broken wiring.

Do I need to change the fan?

If you determine that the problem is in the fan itself, or more precisely in its motor, you can try to fix it. Most often it stops working due to brush failure or problems with the rotor bearings. The commutator or winding crack is rarely damaged.

If the fan cannot be repaired, it must be replaced.

Replacing the fan switch sensor on a VAZ 2101-VAZ 2107

Welcome! The fan switch sensor is far from the last sensor in a car, because thanks to it, the radiator fan turns on when the engine temperature reaches a certain point, but not on all cars, for example, if we take the very first VAZ 2101, they did not have this sensor at all , later, of course, it appeared, but closer to the removal of this car from the assembly line, but these cars almost never warmed up, since their fan was spinning constantly, but if the cooling system of the car is fully operational, then the cars with a sensor thanks to which turn on the fan will also not heat up, and it will warm up much faster because the fan does not spin and allows the engine to heat up very quickly.

Note! To replace this sensor, take with you a set of tools: In this set you must have a wrench set to “30”, with its help you will turn out the sensor, in addition to it, stock up on a large container (a 10 liter basin will be perfect), but although if you do everything quickly, you won’t need any container, in general, a little later (As you read the article) we will explain to you why you need a basin and what to do if you don’t want to get it dirty!

Where is the fan switch located? Let's start with the fact that you need to look for it in the engine compartment of the car, opening the hood immediately look for the radiator (It is indicated by a blue arrow in the large photo), the sensor will be screwed into this radiator (the sensor is indicated by red arrows), but only as you see in the photo below, the wires from the sensor are disconnected, respectively, they will be connected and you will see a slightly different picture, besides this, as you can see, all the radiators have a completely different shape and some have holes for the sensor in the lower left part (see large photo), and for someone in the lower right part (see small photo), if you have it in the right, then the sensor will be located just above the lower pipe, which is indicated by a blue arrow, but on an aluminum radiator this sensor is generally located at the very bottom under the pipe and not above it , so look for it, in fact, it always has one shape, and you can see its shape perfectly in the photographs below.

When do you need to change the fan switch sensor? It is replaced when it fails, namely, if the radiator fan stops turning on, you will immediately understand this if your car heats up to a high temperature and the fan still does not turn on, although in this case the electric motor of the fan may also be to blame, but all this (the serviceability of the sensor also means the fan motor) is easy to check, just grab with your hands in this case both wires that are connected to the sensor (These are essentially terminals, see the photo below) and disconnect them, and when they come out, bridge them together and hold it, it’s better to do this with gloves on and we don’t advise you to handle the terminals, just grab the wires themselves and jumper the ends of the terminals, after that the cooling fan should start working immediately (In this case, the sensor needs to be changed), and if the fan doesn’t turn on, then either you have a problem with the electric motor or something with the wiring that is connected to the sensor, but basically the fan always turns on and this indicates that the sensor has stopped working, by the way, if this sensor breaks in your traffic jam, then you can safely disconnect these two wires from it and rewind them with insulating tape so that they fit together, after which your fan will work constantly, or rather until you open the terminals. (Ignore the arrows in the photo below)

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Note! When you connect the wires to each other, do not forget to turn on the ignition on the car and what else, if suddenly when you connect the wires your fan does not work, check the fuse that controls the electric motor, it may have burned out and needs to be replaced!

Description

It is known that every Priora and Kalina has a cooling system that ensures normal engine operation and prevents it from overheating. One of the cooling devices of the unit is a fan sensor, the signal from which activates the ventilation device.

In Kalinas devices, this controller is designed so that it turns on the fan when the engine temperature reaches a certain point. Thanks to the fan, which must turn on according to 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 does not turn on, and the engine may overheat.

Sensor connection diagram in the cooling system

Why the cooling fan does not work on Kalina

The radiator fan is used to force cool the engine radiator when it overheats.
When the car is in motion, the radiator is cooled by oncoming air flow. At low speeds, or when the car is just standing still, the radiator is not able to cool the liquid on its own, so when it reaches a certain temperature (101-105 degrees), the sensor is triggered, thereby transmitting the corresponding signal to the controller. The latter analyzes the received information and turns on the fan.

The fan itself is a structure consisting of a casing (housing) with a built-in electric motor with an impeller. The fan is attached to the inside of the cooling radiator.

The main reasons why the radiator cooling fan does not work

Let's look at the main options and where to look for faults:

Thermostat. The thermostat from the Lada Kalina has been removed; if it fails, this is the reason that the cooling fan does not work properly. To diagnose this problem, you need to touch the down tube. If it's cold, the thermostat is dead. Many owners of Kalina cars are accustomed to this phenomenon, since it often breaks down, and they carry a spare tire.
If it's not the thermostat, the next step is to check the fuses. You need to make sure that they work and all the drivers too. The easiest way is to check them with a tester or ohmmeter. The fuse diagram can be found here. The relay box with fan fuses is located under the distribution console, next to the controller. The fan fuse has a capacity of 50 A and is designated number 3. The fan relay is number 1. Relay and fuse box. If the fuse is blown, you will have to remove the optional fan control unit. To do this, move the warm air duct to the side and use a 10 mm wrench to unscrew the fastenings of the device. Now it can be easily removed. It has two relays that are responsible for turning on the fan and for high speed. Let's diagnose them both.
Now you can move on to the darkest option - climb under the hood and “feel” the contact wires of the fan itself. Sure, there could be a cracked or broken wire, but there's nothing worse than a burnt-out winding inside the fan. In this case, the fan probably needs to be replaced.
Another reason why the fan won't turn on could be a faulty thermostat sensor. To start the fan in emergency mode, disconnect it from the power supply. You can check the sensor by removing the thermostat and dropping it into a pan of hot water; the thermostat should open.
The last reason why the fan may not work is a break in the circuit itself. Cooling fan wiring diagram

The thermostat was removed from the Lada Kalina.

If it is damaged, then this is the reason why the cooling fan is not working properly. To diagnose this problem, you need to touch the down tube. If it's cold, the thermostat is dead. Many owners of Kalina cars are accustomed to this phenomenon, because they do not often carry a spare tire with them.

The relay box with the fan fuse is located under the instrument panel console next to the controller. The fan fuse is rated at 50A and is number 3. The fan relay is number 1.

Relay and fuse box

If the fuse is blown, you will need to remove the auxiliary fan control unit. To do this, move the warm air duct to the side and use a 10 mm wrench to unscrew the bolts securing the unit. Now it can be easily removed. It has two relays that are responsible for turning on the fan and for high speed. Diagnose both.

Cooling fan connection diagram

Malfunctions of the Kalina cooling fan resistor

The electric fan only operates at high rotation speeds - The main sign that the additional resistor of the Kalina cooling fan is faulty. The electrical diagram for connecting LADA Kalina fans provides for the simultaneous activation of two blowing systems:

electric radiator cooling fan;
air conditioner cooling fan,

If at some point in time only one of them rotates, then we can conclude that the power supply circuit of the second one is broken. The same thing happens when the radiator fan does not spin after the engine warms up. There are several reasons for this phenomenon. This could be either a bad contact or a broken wire, or a faulty electric fan resistor.

Causes of malfunction of the Kalina fan resistor

The main reason for the failure of the additional resistor of the Kalina fan is the blown thermal fuse, which protects the electric motor winding and the power circuit from overload. In this case, it is necessary to repair or replace the Kalina cooling fan resistor. You can do the work yourself, it does not take much time, does not require high qualifications or special tools.

What is needed to check and replace

To remove, check and repair (replace) an additional resistor you will need:

ohmmeter;
crosshead screwdriver;
a set of keys;
soldering iron;
rosin;
solder;
a new resistor or part of it - a thermal fuse (16A and 180 degrees).

If the car has engine (crankcase) protection installed, it is better to remove it from a pit or on a lift.

Replacing the cooling fan Lada Kalina

There is no need to go to a workshop to replace the cooling fan. You can do this without much difficulty and on your own.

Required tools:

Ratchet socket or 10mm wrench;
spanner wrench or open-end wrench 8;
Crosshead screwdriver;
pliers.

Work order

Park the car on a level surface.
Raise the engine hood, disconnect the ground wire from the battery.
Use a 10mm wrench to remove the two screws that secure the air filter.
Disconnect the mass air flow sensor connector by pressing the latch.
Disconnect the purge valve connector from the air filter housing.
Using a screwdriver, loosen the channel clamp screw and remove the bushing.
Unscrew the 4 screws securing the air cleaner cover.
Remove the cover and remove the filter element.
Unscrew the air intake nut using an 8 mm wrench and remove it.
Using a 10mm wrench, remove the two nuts securing the fan cover on the right side of the car, then use an 8mm wrench to remove the two nuts on the left side.
Disconnect the fan power connector.
Remove the fan and housing carefully so as not to damage the radiator fins.
Using a 10 mm wrench, unscrew the 3 screws securing the motor and remove it from the housing.
Reinstall the new motor and rotor.
Screw the housing with the fan to the radiator.
Connect its connector.
Carry out the rest of the installation work in reverse order.

Checking and replacing the Kalina cooling fan resistor

Removing the additional fan resistor is done as follows:

put the car on the “handbrake”;
open the hood;
remove the ground wire from the battery;
remove the engine splash guard;
unscrew and remove the engine crankcase protection (if installed);
press the block latch and unplug the electric fan power supply wiring harness;
Using a Phillips screwdriver, unscrew the two screws holding the additional resistor;
move aside the resistor mounting bracket together with the block;
pull out the resistor.

Checking the resistor consists of two stages:

visual inspection of the integrity of the spiral;
checking the resistor winding for open circuit using an ohmmeter.

If a winding malfunction is detected, the resistor must be replaced with a new one. If the thermal fuse is faulty, then all you can do is replace it. To do this, you will need a soldering iron to remove the burnt fuse and solder a new one in its place. All that remains is to put the parts in their original places. Installation of the Kalina cooling fan resistor is carried out strictly in the reverse order of removal.

How to replace a fan

Having carefully figured out why the cooling fan of the Lada Kalina does not work, the faulty element must be replaced. If you have the necessary skills and dexterity, you can do the repairs yourself. The tools you need to prepare are pliers, a screwdriver, wrenches 8 and 10.

First, park the car on a level surface. Then lift the hood, disconnect the system from the ACB. Using a wrench, unscrew the air filter mounting bolts. Then disconnect the mass air flow sensor (simply press the latch) and the purge valve, which is located on the air filter housing. Unscrew the fastening screw and remove the folding machine.

Remove the air filter cover, remove the filter element, and remove the air intake. Then attach the fan cover and turn off the power to the fan. Once all of the above steps have been completed correctly, you can begin disassembling the fan.