The question of where the cooling fan relay is located on a VAZ 2114 confuses many car owners. Those who like to tinker under the hood of their own vehicle believe that if there is a fuse in the mounting block, then it must correspond to a contact relay. But, as it turns out, this cooling device has two fuses, and both of them are located in different parts of the car. In this article, the reader will learn how to find the fan relay, where its first and second fuses are located, for what reasons the engine cooling device does not work, how to troubleshoot some problems in its electrical circuit, and in the cooling mechanism itself.
Where is the fan relay located on the VAZ 2114
There are 2 relays installed in a VAZ 2114 car. The first is located in the main mounting block, which is located in the engine compartment. Fuse F5 with a current of 20A, in addition to the sound signal, is connected to the fan relay.
The figure shows a new type of mounting block. On the cover there is a clear electrical diagram of the unit. There are symbols next to each device. The letters K indicate relays, the letters F indicate fuses. The device that protects the engine cooling fan is marked with the letter F5 . This fuse is located in the right row, third from top to bottom.
Helpful : Cooling fan does not turn on (7 possible reasons)
There is one small nuance. In cars of the Samara family there are 2 types of mounting blocks. Below is a diagram of the old mounting block:
To open the mounting block to replace a blown fuse, you must release the two latches holding the cover in place and remove it. A special clothespin is attached to the box of the unit, which can be used to safely remove the fusible protective device. A blown fuse will be indicated by a silent beep, since this protective device also supports its operation.
The engine cooling fan relay on the VAZ 2114 is located in a small relay and fuse box in the passenger compartment under the dashboard on the passenger seat side. To get to this block, you need to unscrew the screws and move the partition.
This block has a built-in ignition relay, which is called the main one. The second is the cooling fan relay and the third is the fuel pump relay. Moreover, if the main relay has a constant location, the next 2 relays, depending on the assembly diagram of the electrical circuit, change places. More precisely, in some cars they are second, in others they are third. A fuse is built into each switching device. Their location also depends on the assembly scheme. Therefore, the required relay should be found using symbols. The figure offers 2 assembly options.
And now that you know where the cooling fan relay is located on the VAZ 2114, you can always check its operation, remove it if necessary and replace it with a new one. The fact is that four-pin relays, like fuses, are not repairable. They can only be replaced. They are relatively inexpensive - in the range of 100-200 rubles.
No compression
Does the car start and stall or not start at all? This may happen if the engine lacks compression. Compression in an engine is the ability to maintain the pressure that is created in the combustion chamber when the piston rises to its highest dead center. Compression is measured with a special device - a compression meter. Whether you need such a diagnosis can be determined by external signs. Blue smoke from the exhaust pipe, unstable engine operation or idle speed does not stand still - these are all reasons for weak compression. Such an engine will consume more oil and fuel. If you put your hand on the exhaust pipe and small drops of oil remain on your hand, then this is another symptom of engine failure. It is best to contact specialists. After all, the cause could be a burnt-out piston.
Connection diagram
Knowing the electrical diagram for turning on the radiator fan, it will be easier to find problems in its electrical circuit.
The cooling fan has 2 inputs: the first input leads to the generator through fuse F5 and the connection busbars in the mounting block (2). The harness block (3), nicknamed the chip by drivers, connects the electric fan via a relay to the injection controller connected to the ignition relay. From the wire coming from the controller, a branch leads to an auxiliary relay with a fuse.
Main unit
The main block with fuses and relays is located in the cabin, on the left side, under the control panel. To access, press the latch switch.
Photo - diagram Option 1
Scheme Option 2
Scheme Option 3
Description of fuses
p, blockquote 15,0,0,0,0 —>
| F1 | 5A Lamps for license plate lights. Instrument lighting lamps. Side light indicator lamp. Trunk light. Left side marker lamps |
| F2 | 7.5A Left headlight (low beam) |
| F3 | 10A Left headlight (high beam) |
| F4 | 10A Right fog lamp |
| F5 | 30A Electric motors for glass door lifts |
| F6 | 15A Portable lamp |
| F7 | 20A Electric motor of the engine cooling system fan. Sound signal |
| F8 | 20A Rear window heating element. Relay (contacts) for turning on the heated rear window |
| F9 | 20A Recirculation valve. Windshield, rear window and headlight cleaners and washers. Relay (coil) for turning on the rear window heating |
| F10 | 20A Reserve |
| F11 | 5A Starboard side marker lamps |
| F12 | 7.5A Right headlight (low beam) |
| F13 | 10A Right headlight (high beam). High beam warning lamp |
| F14 | 10A Left fog lamp |
| F15 | 20A Electric seat heating. Trunk lock lock |
| F16 | 10A Relay - turn signal and hazard warning light switch (in hazard warning mode). Hazard warning lamp |
| F17 | 7.5A Interior lighting lamp. Individual backlight lamp. Ignition switch illumination lamp. Stop lamps. Clock (or trip computer) |
| F18 | 25A Glove box lighting lamp. Heater controller. Cigarette lighter. |
| F19 | 10A Door locking. Relay for monitoring the health of brake light lamps and side lights. Direction indicators with warning lamps. Reversing lamps. Generator excitation winding. On-board control system display unit. Instrument cluster. Clock (or trip computer) |
| F20 | 7.5A Rear fog lamps |
Fuse number 18 at 25A is responsible for the operation of the cigarette lighter.
The fog lamp fuse is installed separately in the instrument panel niche behind the main unit.
Relay purpose
p, blockquote 19,0,0,0,0 —>
- K1 - lamp health monitoring relay
- K2 - windshield wiper relay
- KZ - relay-breaker for direction indicators and hazard warning lights
- K4 - relay for low beam headlights
- K5 - headlight high beam relay
- K6 - additional relay
- K7 - rear window heating relay
- K8 - rear fog lamp relay
Electrical diagram of the block
How to check the cooling fan?
If the cooling fan does not work, you will have to find the cause of its failure. First, let's check the temperature sensor using the method used on injection engines, to which the VAZ 2114 belongs. To do this, you need to start the engine and warm it up to the temperature at which it usually operates. Then you should remove the temperature sensor connector, thereby disconnecting it from the machine’s power supply. This is done so that the controller starts the fan in emergency, constant mode. If the drive starts working, this indicates a faulty temperature sensor (thermostat), while the relays, fuses, wires and the turntable itself are in working order.
If there is a problem with the electrical circuit of the cooling system, the fan will not start. There are several reasons why it does not turn on:
- Electric drive malfunctions;
- One or both fuses have blown;
- The cooling fan relay has failed;
- There is a break in the electrical wiring;
- The expansion tank plug is damaged.
Electric drive elements include an electric motor. This is the main fan assembly. It is checked by direct connection to the battery. If it does not work, you should check the motor brush mechanism, bearings, and contacts. These items can be replaced or repaired. If the problem is in the winding, then the entire motor, or even the fan itself, should be replaced. The drive belt often breaks and requires replacement. If it turns out that the motor and drive system are in order, we continue to check further.
Another element that affects the operation of the engine cooling system is the temperature sensor. If the sensor gives incorrect readings, this may cause the fan to turn on earlier or later. A delay in turning it on leads to overheating of the engine. One of the reasons may be that the sensor does not match the climate in which it is used. Then it is advisable to replace it.
Fan problems also include reverse rotation, when the blades drive air inward. This happens if the motor poles are connected in reverse. Video: the cooling radiator on a VAZ 2114 does not turn on - what to do?
Cigarette lighter fuse: replacement
Using the example of a cigarette lighter, we will look at replacing fuses, since they are changed according to the same scheme. First you need to check the functionality of the cigarette lighter, this is done as follows:
- We start the car.
- The cigarette lighter must be inside its socket. That is, at your workplace.
- We wait 20 seconds.
- We take out the device and check it by touch: if the temperature has not increased, then it is faulty.
So, we are convinced that the device is not working. Now we have to replace the blown cigarette lighter fuse. We already know the location of the black box (to the left of the steering wheel, below the dashboard). Next, you need to press the latches so that the lid opens. Inspect the mounting block carefully: there should be tweezers inside to remove the fuses. Now all that remains is to find the cigarette lighter fuse - it is indicated in the diagram as “F18”. We remove the burnt out element and install a new one - the work is finished. We took the cigarette lighter as an example, since it most often fails. This happens due to the desire of VAZ 2110 owners to place additional electrical appliances inside its socket: pumps, car vacuum cleaners and other equipment that overload the fuse.
If there are no tweezers inside the black box or you have lost them, then you can use pliers as a replacement. You should not try to do this with your fingers, as such an action will weaken the already fragile nest. If the relay is inexpensive to replace, then you will have to spend a lot of money to repair the mounting block. You need to unscrew the element carefully so as not to crush it.
Inspection of cigarette lighter wiring
If after replacement the protective element burns out again, you should look for the cause elsewhere. It lies not in the VAZ cigarette lighter fuse, but in faulty wiring.
If the car is old or due to improper manipulation of the electrical system, the wires may shorten and burn out, or an open circuit may occur in the circuit itself, causing the cigarette lighter fuse to trip. It is advisable to inspect the cables for kinks or abrasions. This failure should be diagnosed using a multitester. The wires coming to the cigarette lighter are tested for resistance. If there is no power, then one of the cables is broken.
To repair the cigarette lighter on a VAZ, you will need a soldering iron with rosin and tin, working cables and insulating tape.
Recommendations for care and maintenance
- Buy original fuses. Domestic or foreign, it doesn’t matter;
- Install strictly in accordance with amperage ratings. Unacceptable with lower or higher current strength. In the first case, this will lead to damage to the module, in the second - to breakdown of the unit, which is attached to the fuse;
- Carefully check the quality of fixation of terminals and limit switches on the board. If loose, tighten and press with pliers. A spark can cause a fire and melting occurs;
- If moisture gets in or condensation forms inside the mounting block, remove the cover, dry it, and if necessary, blow it with a stream of compressed air.
Carry out preventive and diagnostic work in the fuse box with the battery terminals removed in order to prevent a short circuit in the circuit.
The average service life of fuses is 40 – 60 thousand km. The service life of foreign analogues is 10–15% longer. Before replacing, read the instructions and get advice from service station specialists.
Sources
- zapchasti.expert/predoxraniteli/predoxraniteli-vaz-2115.html
- 7vaz.ru/vaz-2114/ne-rabotaet-ventilyator-na-vaz-2114-2115-2113.html
