Wipers do not work on VAZ 2108, 2109, 21099


Fan connection 2108, 2109, 21099

Until 1998, on vehicles with the old fuse block 17.3722 (finger fuses), the fan circuit included a relay 113.3747. After 1998 there was no such relay.

Also, before 1998, the TM-108 switching sensor was used (the closing temperature of its contacts is 99 ± 3 ° C, the opening temperature is 94 ± 3 ° C), after 1998 the TM-108-10 with similar temperature ranges or its analogues from different manufacturers . The TM-108 sensor only works in conjunction with a relay amplified for high current. TM-108-10 can work with or without relay.

Scheme for switching on the engine cooling fan on a VAZ 2109 with mounting block 17.3722

  • Fan motor
  • Engine start sensor
  • Mounting block
  • Ignition switch
  • K9. fan motor start relay. A. To terminal “30” of the generator

    Scheme for switching on the engine cooling fan on a VAZ 2109 with mounting block 2114-3722010-60

  • Fan motor
  • Sensor 66.3710 for turning on the electric motor
  • Mounting block
  • A. To terminal “30” of the generator

    Old style fuse box

    Fuse block 2114-3722010-60

    Each fuse in the power supply is responsible for a specific circuit, here is a summary table.

    Fuse numberCurrent strengthThe chain he protects
    F110ABackup fuse
    F210ATurn signal indicators, hazard signal breaker (in hazard mode), hazard warning light
    F310ARear brake lights, interior lighting
    F420ARear window heating element, rear window heating switch contacts, carrying socket, cigarette lighter
    F520AHorn (horn), horn switch
    F630ABackup fuse
    F730AHeater fan electric motor, windshield washer electric motor, electric radiator fan relay, rear window heating relay, rear window heating indicator light, glove box light
    F87.5ABackup fuse
    F97.5ABackup fuse
    F107.5ALeft side light
    F117.5ARight side lamp
    F127.5ARight low beam headlight
    F137.5ALeft low beam headlight
    F147.5ALeft high beam headlight, high beam indicator lamp
    F15Right high beam headlight
    F1615ATurn signal indicators and emergency flasher relay-breaker (in the turn signal indication mode), turn signal indicator indicator lamp, rear reverse lights, gear motor and windshield wiper activation relay, oil pressure indicator lamp, hand brake indicator lamp, coolant temperature indicator, fuel level indicator, fuel reserve warning lamp, voltmeter

    What are the functions of the relay on the fuse box?

    Relay numberFunctions
    1Performance of the front optics cleaning elements
    2Rear window washer motor performance
    3Protection against breakage of turn signal and light signaling lamps
    4Protection against failure of the windshield wiper motor
    5Allows you to determine the performance of the lamp
    6Rear window defogger overvoltage protection
    8High beam lamps
    9Low beam lamps
    11Responsible for the operation of the engine cooling fan. If this relay fails, the risk of engine overheating increases.
    12Klaxon operation

    Fuse block 17.3722

    APurpose
    18Right fog lamp
    28Left fog lamp
    38Headlight cleaners (at the moment of switching on) Headlight wiper switch relay (contacts) Headlight washer switch valve
    416Headlight wiper motor Headlight wiper relay (winding) Heater motor Window washer motor Rear window wiper motor Rear window washer timing relay Windshield and rear window washer activation valve Cooling system electric fan relay relay coil Coil of the rear window heating relay coil Rear window heating control lamp Wardrobe lighting lamp box
    58Turn indicators in turn signal mode and the corresponding indicator lamp Rear lights (reversing lamps) Indicator lamp for fuel reserve, oil pressure, parking brake, brake fluid level, carburetor choke Voltmeter and indicator lamp for charging the battery Gearmotor and windshield wiper switch relay Generator excitation winding (at start-up) “STOP” indicator lamp Coolant temperature and fuel level indicators
    68Rear lights (brake lights) Body interior light Power windows and power window relay
    78License plate lights Engine compartment lamp Indicator lamp for turning on side lighting Instrument lighting lamp and cigarette lighter lamp Heater lever illumination panel
    816Engine cooling fan electric motor and its activation relay (contacts) Sound signal and its activation relay
    98Left headlight (side light) Left rear light (side light)
    108Right headlight (side light) Right rear light (side light)
    118Direction indicators and hazard warning relay (in hazard mode) Hazard warning lamp
    1216Heated rear window element and heating relay Cigarette lighter Socket for portable lamp
    138Right headlight (high beam)
    148Left headlight (high beam) High beam indicator lamp
    158Left headlight (low beam)
    168Right headlight (low beam)
    Relay
    K1Rear window washer time relay (451.3747 / 2108-3747110, 2108-3747110-06)
    K2Relay-breaker for direction indicators and hazard warning lights (493.3747 / 2108-3747010-02)
    K3Windshield wiper relay breaker (522.3747 / 2108-3747710)
    K4Contact jumpers in place of the lamp integrity monitoring relay. Lamp integrity monitoring relay (4402.3747 / 21083-3747410, 21083-3747410-06)
    K5Headlight high beam relay (113.3747 / 2105-3747210-10, 2105-3747210-12)
    K6Headlight cleaner relay (112.3747 / 2105-3747210, 2105-3747210-02)
    K7Power window relay (13.3747 / 2105-3747210-10, 2105-3747210-12)
    K8Relay for turning on sound signals (13.3747 / 2105-3747210-10, 2105-3747210-12)
    K9Relay for turning on the electric cooling fan (13.3747 / 2105-3747210-10, 2105-3747210-12)
    K10Relay for turning on the heated rear window (13.3747 / 2105-3747210-10, 2105-3747210-12)
    K11Relay for low beam headlights (13.3747 / 2105-3747210-10, 2105-3747210-12)

    If the cooling fan does not work

    To drive the fan, a DC electric motor with permanent magnetic excitation ME-272 or similar is installed. Technical data of the electric fan and fan switch sensor:

  • Rated rotation speed of the electric motor shaft with impeller, 2500. 2800 rpm.
  • Electric motor power consumption, 14 A
  • Sensor contact closure temperature, 82 ± 2 degrees.
  • Sensor contact opening temperature, 87 ± 2 degrees.
  • The cooling fan may not turn on due to:

  • electric drive malfunctions;
  • blown fuse;
  • The thermostat is faulty;
  • The cooler switch-on temperature sensor is faulty;
  • faulty VO relay;
  • broken wiring;
  • faulty expansion tank plug.
  • Fuse VO is located in the mounting block of the car's engine compartment and is marked F7 (20 A). The test is carried out using self-diagnosis included in the probe mode.

  • In a car with a carburetor engine, you need to check the sensor. turn on the ignition and short-circuit the two wires going to the sensor. The fan should turn on. If this does not happen, the problem is definitely not with the sensor.
  • In cars with an injection engine, it is necessary to warm up the engine to operating temperature and disconnect the sensor connector, disconnecting it from the vehicle's on-board network. In this case, the controller must start the fan in emergency mode. The electronic unit perceives this as a failure in the cooling system and forces the fan drive to work constantly. If the drive starts. sensor is faulty.
  • What to do if the wipers on the VAZ 21099 stop working?

    The first thing that might come to mind is to replace the windshield wiper relay fuse in the mounting block. Bad advice would be to install a jumper. No need to do this! It’s better to immediately find a fuse of the appropriate rating, flat or cylindrical, depending on the type of mounting block and year of manufacture of the car, and check your assumption.

    As a rule, injection models and carburetor VAZ 21099 after 1998 have a new type of fuse box. They are more modern and reliable.

    Also, if the wipers fail, it would be a good idea to visually inspect the wiper relay itself. The relay contacts may burn out. If the problem is in the relay, the wipers will only work in the uppermost position of the steering column switch.

    You can try removing the relay from the mounting block and cleaning the contacts with a file or sandpaper. Then insert it back, start the car and check the operation of the wipers. A working relay should click when operating.

    If the relay is faulty, it must be replaced.

    VAZ cooling fan connection diagram

    All basic electrical diagrams and modifications for connecting the liquid cooling fan (CO) in VAZ cars of various models are given. What is the essence of VO’s work? The electric motor with an impeller on the shaft is installed in a rectangular metal frame, with which it is attached to the rear of the radiator. When voltage (12V) is applied to the actuator contacts, it begins to work, rotating the blades and creating a directed air flow that actually cools the antifreeze or antifreeze.

    Replacing an electric fan in a car

  • We place the car on a flat surface and immobilize it with the parking brake.
  • Open the hood and turn off the negative terminal.
  • Use wrench 10 to unscrew the air filter housing.
  • Using a screwdriver, loosen the air duct clamp on the air flow sensor and remove the corrugation.
  • Unscrew the screws securing the air filter housing cover and remove the filter element.
  • Using a wrench 8, unscrew the air intake mount and remove it.
  • Using a 10mm wrench, then an 8mm wrench, unscrew the nuts securing the fan housing around the perimeter (6 pieces in total).
  • Disconnect the wiring harness from the fan connector.
  • Carefully remove the fan cover along with the drive.
  • Use a number 10 wrench to loosen the 3 bolts holding the engine to the housing.
  • We put a new one in place.
  • We install the structure in place, fix it, and connect the connector.
  • Further installation is carried out in reverse order.
  • Checking the cooling system

    What to do if the VAZ 21099 carburetor cooling fan does not work? As soon as the car owner noticed the first signs of overheating, i.e. the temperature sensor arrow has approached the red zone, but the carburetor has not yet started pouring smoke from under the hood of the VAZ 21099, you need to check the cooling system.

  • Open the VAZ radiator valve, as well as the car's air damper, which controls the air flow.
  • Turn on the engine regulating the radiator at maximum power.
  • Inside the VAZ car, turn on the emergency button, then press the clutch pedal with your foot and very carefully drive off the road, stopping the car on the side of the road.
  • Leave the VAZ 21099 carburetor engine for several minutes at normal idle speed with the radiator on.
  • After the engine is turned off, the coolant system heats up in those places where it is in close contact with hot parts, resulting in the formation of so-called vapor locks.
  • Check all wire connections

    Step-by-step instructions for checking the cooling system.

  • First you need to open the hood of the car and inspect the entire space under it. Find the source of the pair. Make sure there is enough coolant in the tank, that all rubber hoses, the radiator and, of course, the thermostat are intact. These specific parts and systems may require replacement.
  • Look for liquids under rugs. There must be a good reason why the car engine is not cooling down.
  • If no fluid is detected, check that the sensors that trigger the radiator motor are working. To do this, disconnect the two wires from the sensor holders located inside the radiator and connect them. Then turn the ignition key on the car. If after connecting these wires fan starts to rotate, then it is necessary to bring the liquid level in the cooling system to the desired level.
  • The cooling fan itself must be running constantly. It is necessary to check the sensors in the radiator. As soon as possible, it is necessary to replace these parts with new ones, as well as replace the pipes.
  • If the cooling fan does not operate when the wires are shorted, it may be due to a blown fuse or a broken fan relay. Another variant. burn out the cooling system motor. In this case, all faulty parts must be replaced.
  • After replacing failed elements, it is necessary to carry out a control check. To do this, short-circuit the pair of wires that are connected to the car's sensor to turn on the cooling fan and turn the ignition key. If the fan motor starts, the problem is solved.
  • If the cooling fan does not turn on, you need to check this by applying power to the motor from the battery.
  • The carburetor of a VAZ 21099 car engine may overheat, even if the thermostat that regulates the flow of fluid in the cooling system behind or through the radiator is not working. To find out if this is the case, check the temperature of the hoses connecting the engine and radiator. If the bottom hose is cold, the thermostat is faulty.
  • READ How to Adjust the Mirrors of a VAZ 2109

    New model power supply

    Here the mounting block diagram is arranged a little differently, but it is more relevant for owners of the VAZ 2109, since most of the nines that have survived to this day are modernized versions.

    The scheme is relevant for both carburetor and injection types of engines.

    Fuse number

    Rated current

    The electrical circuit for which it is responsible

    Radiator fan relay winding, electrical circuit of switch and heater motor

    Hazard warning switch in turn signal mode, turn signal switch, turn signal switch, turn signal warning light, turn signal warning light, reverse optics switch, reverse lights, tachometer, voltmeter, gasoline level indicator, gasoline level sensor, gasoline level warning light, pointer coolant temperature, temperature sensor, warning lamp and emergency oil pressure sensor, brake emergency lamp, brake system hydraulic switch, hand brake switch

    Brake light switch and bulbs, interior lighting

    Room lighting lamps, indicator lamp for switching on the dimensions, lamp for illuminating the heater and cigarette lighter handles, glove compartment lamp, switch and lamp for instrument panel illumination

    Horn, horn switch, radiator fan motor

    Left side lamp, left rear side lamp

    Right side lamp, right rear side lamp, fog light switch, fog light indicator light

    Turn signal switch and breaker, turn signal lamps, warning lamp in emergency mode

    Cigarette lighter, socket for carrying lamp

    High beam right headlight

    Main beam of the left headlight, high-range optics warning lamp

    Low beam right headlight

    Low beam left headlight


    New power supply

    As for the relay in the mounting block of the new model for the VAZ 2109, the pinout is as follows.

    Relay number

    Its functions

    Without it, the rear window washer motor will not work.

    Responsible for the operation of turn signal lamps and light signaling

    Provides operation of the windshield wiper

    Protects brake lights and vehicle dimensions

    Provides operation of high beam lights

    Guarantees operation of the optics washer device

    Protects the power window motor if your vehicle has one.

    Sound signal or just a horn

    Protects against high voltage going to the engine cooling fan

    Responsible for the operation of the rear window heating device

    Provides operation of low beam lights

    It is necessary not only to understand the location of a particular fuse or relay, but also to know how to replace a failed element.

    Scheme for switching on the cooling fan of a VAZ 2110 carburetor engine.

    The circuit diagram for switching on the VAZ 2110 cooling fan to the carburetor and injection is different. On cars with a carburetor engine, a thermobiometallic sensor TM-108 is used, and on cars with an injection engine, the controller is controlled.

    When the fan is controlled by a sensor, the switching temperature depends on the sensor installation temperature, which is indicated on the housing. If the fan does not turn on when the temperature rises to the operating temperature of the sensor, you need to check from the very beginning whether the sensor is working correctly. To check, it is enough to close the contacts on the sensor, and if it is triggered, you must replace the sensor. If the fan does not work after shorting the terminals, check the cooling fan

    and fuse integrity.

    Fan control

    If a VAZ 2109 car is equipped with an engine with distributed injection and an injector , then the sensor-switch familiar to the owners of the carburetor model does not exist. The fan is turned on and off by the ECU controller. This controller receives information from the coolant temperature sensor (CTS), which is installed in the outlet pipe between the thermostat and the cylinder head. The sensor is used to monitor not only the operation of the fan, but also the engine. Including:

  • optimization of the degree of enrichment of the air-fuel mixture: in a cold engine the mixture is enriched, when heated it becomes more liquid;
  • increasing the crankshaft rotation speed when starting the engine so that the engine does not stall immediately after starting;
  • setting the ignition time to save fuel;
  • holding the recirculation valve in the closed position until the engine enters operating mode.
  • To determine the temperature of the VAZ 2109 DTOZH, a thermistor is used in the injector. a resistor whose resistance depends on temperature. VAZ 2109 uses a thermistor with a negative temperature coefficient. This means that as the temperature increases, its resistance decreases.

    Where is the Fan Relay for VAZ 2109 Injector?

    VAZ 2110 cooling fan switching diagram

    To maintain the engine temperature, the VAZ 2110 fan cooling circuit is used. The fan motor turns on and off automatically.

    General characteristics of the model

    90s dream car

    The dimensions of the car have changed slightly due to the lengthening of the wing and enlargement of the hood. In addition, there is a completely new, improved VAZ radiator grille and, of course, an updated instrument panel. The length of the VAZ 21099 compared to other cars in this group has increased by 20 cm.

    The VAZ 21099, like other models of this family, has many advantages:

  • it is capable of developing quite high speed;
    • has excellent controllability when driving;
    • Stable on completely different types of roads.

    In 2004, production of this car model was discontinued, but production in Ukraine continues.

    VAZ 21099 cars come in two types.

    The VAZ 21099 has a carburetor, as in the injectors of the VAZ 21099, the layout of the fuel supply system is almost the same.

    Quite often, the owners of this car are faced with one problem: the VAZ 21099 carburetor cooling fan does not work.

    Cooling system VAZ 2109

    The liquid cooling system of the injector of the VAZ 2109 automobile engine is a closed-cycle system with forced circulation of coolant (coolant). The system consists of the following blocks:

  • water pump with impeller driven by timing belt;
  • a thermostat that directs the coolant in a small or large circle depending on the degree of engine warm-up;
  • a radiator consisting of two plastic containers for coolant flow and aluminum tubes for heat removal, located in front of the engine compartment to facilitate air access;
  • expansion tank equipped with inlet and outlet valves to maintain normal pressure in the system;
  • The radiator cooling fan is located directly in front of the radiator for efficient heat dissipation.
  • Fan operation is critical in hot weather when filming in slow motion. Under these conditions, engine overheating is especially likely, and, accordingly, high-quality fan operation is required. The cooling air flow must be directed correctly to the radiator. If the VAZ 2109 injector cooling fan does not work, the cooling system may “boil”.

    Scheme

    The entire line of VAZ 2109 cars can be divided into two branches - those produced before 1998 and those produced after 1998.

    Older cars are equipped with fuse blocks whose marking is 17.3722. This power supply consists of a housing and an engineering board. Wire contacts, fuses and relays are soldered to the board.

    The required mounting block is also located the same everywhere - in the engine compartment opposite the driver's seat, almost under the windshield.


    Location

    Differences

    Are there any differences between the old and new versions of the power supply? Of course. They are as follows:

    • The parts of the mounting block are marked differently;
    • The fuse ratings are different;
    • The new power supply does not have a relay for the cooling system fan motor and a time relay for the rear window washer device.

    Fan diagnostics

    In order to check the operation of the unit, you will need a one and a half meter wire, preferably with “crocodiles” at the ends. With the engine off, connect the positive terminal of the battery directly to the fan terminal. The working unit should begin to rotate. If not, then this is a malfunction. If the cooling fan does not turn on when the engine overheats, although diagnostics show that they are working, you should check the DTOZH.

    During the test, you will need an ohmmeter to measure the resistance of the sensor. An ohmmeter is included in any, even the simplest portable digital multimeter. The procedure is as follows:

    READ How to Replace the Starter Bushing on a VAZ 2109

  • With the cold engine turned off, disconnect the wires from the DTOZh contacts.
  • Set the multimeter mode switch to the “resistance measurement” position.
  • Measure the sensor resistance. At room temperature it should be approximately 2200. 2800 ohms.
  • Install the sensor wires.
  • Start the engine and let it warm up to idle at about 80 degrees.
  • Turn off the engine. Remove the wires from the sensor contacts.
  • Measure the sensor resistance. At 80 degrees, the resistance should be between 270.389 Ohms.
  • If for some reason the sensor resistance is not normal, the part must be replaced. And if this is the case, but the unit does not turn on, something is not working in the electronic engine control unit. You should contact a service station. You will need special equipment to diagnose and flash your computer.

    Dismantling and replacement

    If one or another equipment fails, you must first check the condition of the fuse responsible for it.

    In practice, removing and removing an unusable fuse or relay is not difficult. To do this you need:

    • Raise the hood and disconnect the minus from the battery. Since you are working with the fuse box responsible for electrical equipment, the car should not be energized at this moment;
    • Find the mounting block. It is located in the engine compartment opposite the driver's seat directly under the windshield. The top of the block is covered with a plastic cover. To remove it, simply press the latches on the sides;
    • Remove the cover and look at the back side. There is an electrical diagram showing the location of one or another fuse or relay. Just find the element that is responsible for the failed equipment according to the tables above;
    • Remove the fuse. All mounting blocks are equipped with special pliers. Manually removing fuses is not recommended. The relays are removed by gently rocking up and down;
    • Replace the failed component.

    Fuse failure is determined by the melted filament. These are fusible elements that melt and make contacts, preventing equipment from being damaged by excessive voltage.

    That's it, all that remains is to replace the fuse block element, close the cover, replace the battery terminal and check the functionality of the equipment.

    The windshield wiper kit consists of a gearmotor (an electric motor with a gearbox), arms and brushes.

    The movement of the brushes is parallel. The electric motor of the cleaner is excited by permanent magnets, three-brush, with two rotation speeds

    To protect the electric motor from overloads when the brushes freeze to the glass or there is high resistance to their movement, a thermobimetallic fuse is installed in the wiper

    Fig. 1 Scheme for connecting the windshield cleaner and washer: 1 - electric motor for the windshield washer; 2 - electric motor for windshield wiper; 3 - mounting block; 4 - ignition switch; 5 - ignition switch unloading relay; 6 – windshield wiper and washer switch; Short circuit – windshield wiper relay; A - to power supplies; B - the order of conditional numbering of the plugs in the block of the wiper motor

    The circuit diagram for switching on the purifier is shown in Fig. 1.

    The cleaner has three operating modes: I – intermittent mode, carried out in positions II and III of switch lever 3

    This mode is provided by an electronic relay K3 type 525 3747 installed in the mounting block.

    This relay also turns on the wiper gear motor (low speed) when the windshield washer II is turned on - mode - constant, with low speed of movement of the brushes, carried out in position IV of switch lever 6.

    In this case, the supply voltage is supplied to the electric motor brush located in the geometric neutral III - mode - constant, with a high speed of movement of the brushes. Occurs in position V of the switch lever 6. In this case, the supply voltage is supplied to the brush, offset from the geometric neutral

    A relay is used to unload the contacts of the ignition switch

    Causes of fan malfunction

    There are times when the radiator cooling fan runs constantly. This is also wrong. What to do in this case? What is the cause of the problem?

    The temperature sensor may be damaged. This is indicated by a constantly burning light sensor. In this case, simply replace the temperature sensor or injection system unit. The relay may need to be replaced. Also, the contacts on the radiator switches that trigger the relay may not open. To solve the problem, you will need to replace the thermal relay.

    You will need to remove it to determine the cause of the fan failure.

  • Disconnect the fan and wiring harness by disconnecting the wires.
  • Disconnect the motor wire by unscrewing the nut on the left. Use the appropriate keys if necessary.
  • Under the hood, unscrew the two screws that secure the fan.
  • Get the cover.
  • Unscrew the two fan mounting bolts.
  • Remove five more bolts and the air intake grille.
  • Lift the fan support and pull it towards you.
  • Rotate the fan
    90 degrees and remove it.
  • Fan motor connection diagram

    If your car breaks down, regardless of whether the fan or something else stops working, you should contact a specialized workshop. Experienced technicians will always find the cause of the problem, select the necessary spare parts, sensors and carry out repairs.

    Of course, many car owners want to repair their cars themselves; it gives them great pleasure and requires minimal costs. But in this case, there is a risk of making a mistake in choosing parts and making the correct diagnosis. A car enthusiast can spend a lot of time and effort, but as a result do not get the desired result. To prevent this from happening, it is better to contact a specialist.

    The car is installed on a VAZ-2109. two fans

    .
    The first, more powerful one, is installed in the engine cooling
    to increase air flow through the radiator core.
    fan is installed in front of the heater radiator (“furnace”)
    , its task is to pump heated or unheated air into the car. Both fans are driven by DC motors.

    The fan, which is installed in a hole in the housing covering the radiator core, has a sensor for automatically turning on the engine in the electrical connection circuit. This sensor is screwed into a threaded hole located in the right radiator reservoir because the coolant temperature will be at its highest when the thermostat is activated. The fan turns on without a driver. The sensor should operate when the operating temperature of the antifreeze exceeds 90-95 degrees and send a signal to the relay to turn on the engine located in the mounting block. The electrical circuit for turning on the electric motor is protected by fuses No. 4 and No. 8 on mounting blocks of type 17. 3722.

    If your VAZ-2109 car has a mounting block of type 2114-3722010-60, then the fan motor is turned on directly from the power sensor, without the participation of a relay. It's just not in the mounting block at all. The electrical circuit is protected by a fuse marked No. 5. If these electrical circuits are faulty, the fan will not turn on. The driver will determine this by reading the coolant temperature gauge. The arrow of this pointer will point to the red area of ​​the scale. In this case, it is necessary to reduce the load on the engine to idle speed, turn on the interior heater fan and open the tap, supply coolant to the stove radiator, start driving until it stops completely, and eliminate the malfunction. reasons for the malfunction.

    You should start looking for the causes of malfunctions with the engine start sensor

    fan. To do this, open the hood and disconnect the terminal from the sensor. To further test the sensor, you will need a piece of wire to short the two wires going to the terminal. Wrap the jumper with electrical tape to prevent it from touching the weight of the vehicle. Turn the ignition on and if everything else is fine, the fan will start. Moreover, in this case, it will work, it will work continuously as long as the ignition is on.

    If the fan on the VAZ 2109 does not work, open the cover of the mounting block and check the serviceability of fuses No. 5 on block 2114-3722010-60 and No. 4, No. 8 on block 17. 3722. Look for the fuse number markings at the top of the cover. After making sure that the fuses are good and the fan is still not working, you need to check its motor.

    To do this, you will need two insulated wires to connect the fan motor terminals directly to the battery. If the fan starts to operate, make sure that the air flow is under the hood of the car, and not vice versa. If the connection is incorrect, change the polarity of the wires connected to the battery. This can help you get to the repair site, and you can turn off the fan motor only by disconnecting the wires from the battery. In this case, the reason that the fan does not turn on will be either a faulty relay or faulty wiring.

    Prolonged driving on an overheated engine when the VAZ 2109 injector cooling fan is not working is fraught with serious consequences. The engine may knock or jam, and then major repairs will be necessary. Therefore, if the temperature gauge needle moves steadily into the red zone, immediately turn on the heater at full power, stop in a safe place and allow the engine to cool. Do not open the expansion tank cap on a hot engine; overheated antifreeze may spill.

    Sources:

    https://avtoblokrele.ru/vaz/blok-predohranitelej-vaz-2109-2108-21099.html https://litezona.ru/rele-ventiljatora-vaz-2109-inzhektor-gde/

    Starter activation relay VAZ 21083 (21093, 21099)


    On a VAZ 21083 (21093, 21099) car and similar ones, the starter is turned on not directly, but through a relay.

    Purpose of the VAZ 21083 starter activation relay

    The starter switch relay is designed to reduce the load on the ignition switch contacts when starting the engine with the starter. Since the starter is the most powerful consumer of electrical energy in the electrical equipment of a car, if it was turned on directly, the ignition switch would burn out very quickly.

    Where is the VAZ 21083 (21093, 21099) starter relay installed?

    The starter relay for the VAZ 21083 (21093, 21099) car is installed on the engine compartment panel.


    Where is the starter relay installed?

    Starter activation relay device

    The starter activation relay consists of a coil (copper wire winding) with a magnetic core located inside.

    How does the starter relay work?

    After turning the key in the ignition switch to the “Starter” (II) position, its contacts “30” and “50” close. Voltage is supplied to the starter activation relay (relay contact “85”). It is triggered (the contacts inside the relay are closed) and supplies voltage to terminal “50” of the starter traction (retractor) relay. The retractor is activated and the starter turns.

    Starter activation relay wiring diagram

    Starter relay malfunction

    The most common malfunction of the switching relay is when the starter stops turning on.

    Oxidation of relay contacts or ground

    "Open" in the relay windings

    Relay burnout due to short circuit

    A “break” in the electrical circuit may also occur, which should be taken into account when diagnosing a malfunction.

    “Culprits” of the malfunction of the VAZ 21083 starter relay

    A faulty relay must be replaced with a new one; if the contacts are oxidized, we clean them and check its operation.

    Applicability of the starter activation relay on VAZ 21083, 21093, 21099 vehicles

    In the electrical circuit for switching on the starter of a VAZ 21083 (21093, 21099) car, a starter switch relay 111.3747-10, 97.3747-10 and their analogs are used.

    Characteristics of the starter enable relay 111.3747-10

    Rated voltage - 12 V

    Operation voltage: no more than 8 V

    Release voltage - 1.5 - 5.5 V

    Load current - 20/30 A

    Winding resistance - 85±5 Ohm

    Notes and additions

    The starter is the most powerful consumer of electrical energy in a car's electrical equipment (1.3 kW). When starting the engine, the current consumed by it can reach 400 A, which is a lot. Therefore, all connections in its electrical circuit must have reliable contact. Otherwise, the starter may “shoe.”

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