It is difficult not to notice when the heater in a VAZ-2115 does not work, especially if the heater breaks down in the winter. What malfunctions can be assumed if a cold air flow penetrates into the car interior or if there is no heated air flow at all?
There are several reasons that can stop the operation of the VAZ-2115 stove, including a malfunction of the fan fuse. To fix a fuse, you need to know exactly where it is. This will be discussed below.
Relay and fuse blocks VAZ 2112: description and explanation
Modifications of mounting blocks and fuses of the VAZ 2112 have changed more than once during the production of the model.
Radical innovations were introduced only in 2002 after the appearance of a 16-valve injector. In 2006, there was only one unit in the cabin, and in 2007 a console unit was added to it. This happened thanks to changes in the shield and gearbox, and the addition of a Europanel. The cover of the main unit became hinged, which simplified access to the fusible elements. Separate inserts outside the mounting blocks, for example, under the brake pad, have been preserved.
Heating system operation
The VAZ manufacturer did not complicate life for itself and its customers by making the heating system on most of its car models identical:
- turning on the regulator, the driver from inside the cabin turns on the supply of antifreeze to the heater radiator;
- before this, the coolant warms up to 90 degrees (approximately);
- after this, the fan is turned on, pumping air;
- the fan on the VAZ-2114 has three speed modes;
- the air flow penetrates from the outside of the heating system inside, that is, into the interior of the car;
- regulating dampers allow the driver to select the zone where the heating will be directed;
- The VAZ-2114 provides heating for the interior, windshield and legs.
Important! If the stove fan fails, the entire heating system of the VAZ-2114 stops working. Stopping the fan does not allow air heated by the radiator to penetrate inside in normal quantities. Instead of the usual 5–10 minutes, heating takes several hours.
VAZ 2112 fuse diagram
With an 8-valve and 16-valve engine, it is equipped with a main mounting block, and since 2008 an additional console has been added. A diagram with element markings is printed on the left side of the main block cover and placed below.
The designations of all elements are presented below. You can find the transcript in the table.
| Circuit breakers | Power, A | What protects |
| F1 | 5 | Lamps for turning on the license plate lighting, instruments, side lights, trunk, left side. |
| F2 | 7,5 | Low beam |
| F3 | 10 | Further |
| F4 | 10 | PTF |
| F5 | 30 | Door windows |
| F6 | 15 | Portable lamp (socket) |
| F7 | 20 | Engine cooling fan. Sound signal. |
| F8 | 20 | Rear window heating element. Relay for turning on the heated rear window. |
| F9 | 20 | Recirculation valve. Cleaners, windshield and headlight washers (wiper fuse). Relay for turning on the heated rear window. |
| F10 | 20 | Spare |
| F11 | 5 | Starboard side marker lamps |
| F12 | 7,5 | Middle left |
| F13 | 10 | Far left. Power indicator lamp |
| F14 | 10 | Left PTF |
| F15 | 20 | Electrically heated seats. Trunk lock lock |
| F16 | 10 | Turn signals and emergency lights. |
| F17 | 7,5 | Interior lighting. Ignition switch. Stop signal. Watch. |
| F18 | 25 | Glove compartment lighting. Heater controller. Cigarette lighter fuse. |
| F19 | 10 | Locking door locks. Relay for monitoring the serviceability of brake light lamps and dimensions. Direction indicators. Reversing light. Generator excitation winding. On-board control system display unit. Instrument cluster. Watch. |
| F20 | 7,5 | Rear fog lamps. |
- K1 - lamp health monitoring;
- K2 - windshield wiper;
- KZ - direction indicators and emergency lights;
- K4 - switch on low beam;
- K5 - high beam;
- K6 - additional relay;
- K7 — heated rear window;
- K8 - rear PTF.
Starter fuse and relay
Installed on the device itself between the engine and the fan radiator. If signs of a malfunction appear, it is better not to delay replacing the element and install a new relay.
Fuel pump fuse and relay
Located in the additional interior installer - No. 3. Responsible for the fuel pump relay No. 5.
Relay and fuse for cigarette lighter
No. F18 is rated at 25 Amps.
Stove
The 25 A element F18 is responsible for protecting the operation of the electrical circuit of the heater motor.
Turn signals
The elements are marked as F19 and are rated at 10 Amps.
Brake lights
Located in the main block - No. F17. Its power is 7.5 A.
Where is the alarm fuse located?
Cooling Fan
The F7 element with a power of 20 Amperes is responsible for its protection.
Which fuse goes to the radio?
Window lifters
Fuse and relay for central locking VAZ 2112: where is it located
They can be found in a separate box behind the main mounting block.
Ignition
The main relay is located in the additional cabin unit, where it is number 6.
Reverse
F19 with a rating of 10 Amperes is responsible for the lamps.
Fogs
Protected by three inserts: right - F4, left - F14, and rear - F20. The power of all PTFs is 10 Amps. In case of tuning, you may need to replace them with new ones along with the fog lights. The connection occurs via switch K8.
Lamp health monitoring relay
Marked as K1 in the main block of the VAZ 2112.
Brake
Installed under the brake pedal.
Relay and fuse for injectors
The additional element F3 is rated at 15 Amps.
Fuse for interior light
The F17 element with a power of 7.5 A is responsible for the safe operation of the VAZ 2112 interior lighting lamp.
Number plate illumination
Corresponds to F1 with a rating of 5 Amps.
Generator
A three-level relay voltage regulator is located on the device. It is better to replace the factory element with a new one, since three-level voltage regulation often leads to a short circuit.
Heated rear window
Relay K7 is responsible for turning on. Protects the F8 electrical circuit with a rating of 20 Amps.
Seat heating
It is protected by a 20 Amp F15 insert.
Wiper relay
This is a K2 and without its stable operation there will be no washer supply to the windshield, and the wipers will not be able to do their job.
Charger
They placed it next to the device - one of the few elements of this kind under the hood of a car.
Low and high beam VAZ 2112
It is protected by fuses F2 and F12 (left and right headlights), and the high beam is protected by F3 and F13 (left and right). The first has a rating of 7.5 A, and the second has a rating of 10 A.
Fuse for the dashboard of VAZ 2112
Located in the wiring harness leading to the instrument panel from the battery.
Dimensions
There are 2 fusible elements - F1 and F11, left and right. The power of both is 5 Amperes. Factory fuses require replacement due to the fact that the dimensions often burn out due to their malfunctions.
Heated seats
It is protected by an element marked F15 for 20 Amperes.
VAZ 2112 speedometer fuse: where is it located?
Opening the trunk
This is an F1 and is rated at 5A.
Fuse F6
Responsible for protection against burnout of the car socket. Its rating is 15 Amperes.
VAZ 2112: fuse F17 blows
Most often, this element, which is responsible for interior lighting, fails due to a battery failure. Its power is 7.5 A.
Fuse F19
Responsible for protecting the brake light, reversing lights and dimensions.
Relay K1
An element of lamp serviceability, which in older versions is replaced by a jumper.
Relay K6
Speed sensor
Located on the wiring harness leading to the device.
How to check if the switch is working properly
For diagnostics, take a regular marker light bulb rated at 12 V, where 2 wires are soldered. Then remove the instrument panel. You can do this by following the step-by-step instructions:
- Using a Phillips-head screwdriver, unscrew the 3 screws that securely secure the left center console screen.
- Remove the trim, and then remove the protrusion located at the bottom from the body bracket.
- Continue working with a Phillips screwdriver - remove the 5 screws secured in the right console trim and remove the screen.
- Disconnect the terminal that goes to the negative wire of the VAZ-2115 battery. If there is a radio receiver here, remove it and disconnect the harness block using a wire, or remove the plug container from the panel.
- Next, your task is to disconnect the plug from the cigarette lighter. The socket of the lamp illuminating the ashtray is removed.
- Pull the handle off the levers using a narrow screwdriver.
- Pull the handle that activates the electric fan switch of the VAZ-2115 stove in your direction, and then pry it lightly with a screwdriver.
- A Phillips screwdriver will be needed again to unscrew the 2 screws located above the devices, as well as the 2 screws below them.
- Pry up the plug and unscrew the screw under the plug.
- Get rid of the pair of screws that secure the trim.
- Remove the instrument panel trim and unscrew the remaining fasteners.
Once you reach the switch, check its serviceability in this way:
- Turn on the ignition of the VAZ-2115.
- Compare the negative wire of the light bulb with the body ground.
- Connect another light bulb to outputs 1, 2, 3, which pass through an additional resistor.
- If the light comes on, then the switch is working.
- If the light remains off, switch the light source to the positive wire to the heater position switch. If the lamp still does not light up, it means there is an open circuit, perhaps the fuse has simply been blown out.
VAZ 2110 2111 2112 (injector) fuses and relays
VAZ 2110 2111 2112 (Lada 110 111 112) - a family of cars produced in 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 with sedan and hatchback bodies and a station wagon mainly with 8 and 16 valve gasoline engines ( injector , carburetor). In this article you will find a description of the fuse and relay blocks of the VAZ 2110 2111 2112 with diagrams , photographs and their locations. Electrical connection diagram. Let's highlight the fuse responsible for the cigarette lighter.
The purpose of fuses and relays in your VAZ 2110 (2111 / 2112) relay may differ from those presented and depend on the year of manufacture. The current purpose can be printed on the block itself.
Why the stove may not work:
Many motorists have encountered the fact that the heater fan on a VAZ-2114 stopped working. There are many reasons for this effect, and they can occur at any time. So, in this article, we will look at the reasons why the heater fan may not work, as well as methods of elimination.
The video below describes the process of troubleshooting and repair in a situation when the stove fan does not work:
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
Replacing the heating motor (fan)
When the reason why the heater fan on the VAZ 2114 does not work has been identified, it is necessary to begin eliminating it. There are a sufficient number of fans on the market in different price categories: from cheap Chinese models, the quality and service life of which are in question, to reliable and durable options, whose cost is an order of magnitude higher.
As evidenced by reviews from owners of fourteenth VAZs, the best option in terms of price-quality ratio are Luzar fans. The current cost of which, today, is about 1200 rubles.
Removing the heater fan on a VAZ 2114 is quite simple - it is located in a special container located in front of the windshield in the hood compartment. The only tools we need are a screwdriver and a set of keys. Let's consider the algorithm of actions by which the stove fan is replaced on a VAZ 2114:
- First of all, disconnect the negative terminal from the battery;
- In the cabin of the fourteenth, under the dashboard, there is a positive power wire for the motor; it must be disconnected ;
- We move under the hood of the fourteenth. The fan casing cover is secured with two screws; they must be unscrewed;
- We remove the “ground” of the motor; to do this, you need to unscrew the nut that secures it to the body of the heater casing from below;
- Open the casing and unscrew the two screws that secure the fan;
- Next, unscrew the screws that secure the air intake grilles to the housing in front of the windshield. We take them off;
- Now you can remove the heater motor on the VAZ 2114, since all its fastenings have been removed. The fan is mounted on a hook located on the body - move it towards you and lift it;
- Once the motor is removed from the hook, you will need to rotate it 90 degrees so that it comes out of the casing smoothly and remove it.
Let's sum it up
If the heater fuse regularly burns out, do not rush to change the product. In fact, it is initially necessary to identify the cause of this problem. You can do this yourself if you have basic knowledge of electronics and a tester to check contacts and proper operation of network elements. If electronics are not your thing, then it is better to contact specialists to detect and eliminate the causes of the burnout of the protective element.
Remember that replacing a burnt part does not always solve the problem. Only an integrated approach to modernizing heating elements and eliminating sources of problems will ensure efficient operation of the heater and a comfortable temperature in the car.
