February 27, 2015 Lada.Online 334 577 23
The relay and fuse box is also called the mounting block or black box. If problems are identified in the car related to electrical equipment, first check the fuses and relays. If they burn out, we replace them with the same ones, but first we must determine the cause of the burnout. The article contains a complete description of all Lada Largus mounting blocks.
Lada Largus fuse diagram
The first car of this VAZ family was released in 2011, and already in 2013 it became one of the leaders of the Russian car market, further consolidating its victory in 2014. Among the various options, the Largus Cross crossover is offered, which appeared in various trim levels in 2015 and 2021.
In 2017, it was announced the start of production of Lada Largus on gas, which was implemented in 2021, which also became the year of restyling of the family members. You can buy a car of the family with an 8-valve engine and a 16-valve engine. Unlike configurations, this does not greatly affect the set of fuses and relays that can be found in one of the two mounting blocks of the machine.
The first and main one is located in the cabin, and the second is under the hood, which is quite typical for AvtoVAZ models.
The reason is the fuse
Before you start repairing the VAZ Largus car cigarette lighter, you should check the condition of the protection. The fuse may have blown and needs to be replaced. A sign that it is the one that is faulty will be a non-working radio. The fuse is located in the mounting block, which is located on the left end side of the front panel.
- Open the driver's door.
- We remove the decorative cover, on the back side of which there is a diagram of the arrangement of the elements.
- Use your hand or tweezers to pull out fuse F38.
- We check the functionality of the system.
- We carry out reverse assembly.
When making repairs, it is important to install a fuse with a rating recommended by the factory - 15 amperes. Otherwise, in the event of a short circuit, there is a risk of melted wiring or fire. Do not connect powerful devices (more than 180 watts), the fuse will trip. The calculation formula is P=I*A (Power 180 Watts = Voltage 12 volts * Current 15 amperes).
Fuse box of Lada Largus in the cabin
The mounting block in the cabin is considered the main one, so the vast majority of electrical circuit fuses are installed here. To be more precise, this block is located to the left of the dashboard, at its end and is covered with a plastic cover, the fastenings of which are clearly visible.
| Fuse no. | Current (amps) | Which electrical circuit does it protect? |
| F1 | 20 | Windshield wiper, windshield wiper switch, heated tailgate relay |
| F2 | 5 | Instrument cluster, fuel pump relay, engine control unit (ECU) |
| F3 | 10 | Brake light switch |
| F4 | 10 | Diagnostic connector, immobilizer antenna unit, body electrical monitoring system |
| F5 | — | Reserve (R) |
| F6 | — | (R) |
| F7 | — | (R) |
| F8 | — | (R) |
| F9 | 10 | Instrument cluster, low left headlight |
| F10 | 10 | Low right headlight |
| F11 | 10 | Instrument cluster, high left headlight |
| F12 | 10 | Far right headlight |
| F13 | 30 | Rear door window motors |
| F14 | 30 | Front door power window motors |
| F15 | 10 | Electronic control of ABS system, acceleration sensors, steering angle sensor |
| F16 | 15 | Electrically heated front seats |
| F17 | 15 | Sound signal |
| F18 | 10 | Left front and rear side lights |
| F19 F20 | 10 7,5 | Right front and rear side lights, glove compartment lights, instrument cluster lights, hazard warning switch, HVAC controls, audio system, cigarette lighter, central locking switch, front power window switches, license plate lights, right rear side lights . Rear fog light |
| F21 | 5 | Electrically heated exterior mirrors |
| F22 | — | Reserve (R) |
| F23 | — | (R) |
| F24 | (R) | |
| F25 | — | (R) |
| F26 | 5 | SRS system |
| F27 | 20 | Rear door wiper motor, horn, TDC sensor, reverse light switch |
| F28 | 15 | Control of interior electrical equipment (energy saving mode) |
| F29 | 15 | Interior electrical control, diagnostic connector |
| F30 | 20 | Interior electrical equipment control |
| F31 | 15 | Fog lights and their relays |
| F32 | 30 | Heated tailgate glass |
| F33 | — | |
| F34 | — | |
| F35 | — | |
| F36 | 30 | Electric motor for heating, air conditioning and ventilation systems |
| F37 | 5 | Electric exterior mirrors |
| F38 | 15 | Audio system, cigarette lighter |
| F39 | 10 | HVAC Motor Relay |
Purpose of fuses in the block
The internal fuse block is equipped with elements responsible for the systems:
- 1 – windshield cleaning device, heated rear window;
- 2 – tidy, ECU control relay for fuel pump, navigation device;
- 3 – stop button;
- 4 – turn signals and power supply to the diagnostic block, control of the size relay, parking module;
- 5-8 – reserve cells;
- 9 – low beam of the left headlight, assistance in controlling the tidy, pump for the headlight cleaning system;
- 10 – is fully responsible for the low beam of the right headlight;
- 11 – far left side and tidy;
- 12 – far right;
- 13/14 – section of rear/front power windows;
- 15 – ABS device and steering wheel rotation and acceleration sensors;
- 16 – electric heating of the rear sofa;
- 17 – beep;
- 18 – side lights of the left side, illumination of license plates, glove compartment;
- 19 – dimensions on the right side of the car, illumination of license plates, glove box, emergency lights, acoustics, switches;
- 20 – rear fog lamp on the left side, and part of the dashboard;
- 21 – rear view mirror shades;
- 22 – navigation system terminal;
- 23 – empty;
- 24 – EUR;
- 25 – power supply to the gas installation;
- 26 – seat belt pretensioner device, airbag electronics;
- 27 – belt position indicator for driver, front passenger, rear window wiper, windshield washer pump control;
- 28 – acoustic module, instrument and interior lighting;
- 29 – diagnostic block, UCH;
- 30 – central locking;
- 31 – front fog lights;
- 32 – heated rear wind window and exterior mirrors;
- 33-35 – empty nests;
- 36 – stove and air conditioner;
- 37 – mirror control drive;
- 38 – cigarette lighter and speakers;
- 39 – depends on the configuration – is responsible for the stove, air conditioning, navigation system.
Replacing the fuel pump Lada Largus
For those who have already changed the fuel filter on a Lada Largus themselves, replacing the fuel pump will not be difficult. Let's figure out step by step how this is done.
Please note that the fuel pump on the Lada Largus van changes slightly differently and we will discuss this at the very end of this article.
1. First of all, fold down the lower part of the rear seat to gain access to the fuel pump hatch.
2. Lift the plastic cover and move the carpet to the side.
3. Carefully remove the round fuel pump cover.
4. Disconnect the fuel pump power supply and start the engine. This is necessary to relieve pressure in the system. After running for 1-2 minutes, the engine will stall without fuel, and the fuel will be discharged on its own.
5. Now we squeeze the clamps and disconnect the fuel line from the top cover of the fuel module.
6. Unscrew the clamping ring, resting against the protrusions of the edge of the neck with a flat screwdriver. When the nut is loose, unscrew it completely by hand.
7. We take out the fuel module and at the same time carefully remove the fuel level indicator float so as not to bend it.
8. Disconnect the contact chip from the fuel pump.
9. Remove the lower part of the fuel module by prying the clamps with a screwdriver and disengaging them.
10. Remove the coarse filter from the fuel pump.
11. Disengage the latch from the guide and remove the fuel filter.
12. Heat it with a hairdryer and remove the tube from the fuel pump.
13. Install the new fuel pump in place. We put the tube in and heat it with a hairdryer so that the tube shrinks. If necessary, install a new tube.
We put everything back together in reverse order.
Largus fuse diagram under the hood
The mounting block in vehicles of the Largus family serves as the location for all relays and part of the fuses. Of the latter, those that protect the circuits of the motor control system are presented. The fuses are marked with the letter F.
The block is located to the left of the battery. To get to it, press out the latches holding the cover on the side, back and front.
| Relay/fuse no. | Current (amps) | Relay/fuse assignment |
| 231(A). | Fog light relay | |
| 753(B) | Headlight washer pump relay | |
| 233 | Heater Fan Relay | |
| F1/F2 | 60 | Electronic control of ABS and ESP systems |
| F1/F2 | 50/25 | Exterior light switch, interior fuse box |
| 700(A), | Cooling fan relay | |
| 474(B) | Air conditioning compressor relay | |
| F1 | 30 | Relay box power supply |
| F2 | 25 | Injection relay power supply |
| F3 | 5 | Power supply for injection system relay, ECU |
| F4 | 15 | Not used |
| 238(A) | Injection blocking relay | |
| 236(B) | Fuel pump relay |
Assignment of fuses in the engine compartment
Each structural element of the mounting block is responsible for its own circuit or separate device.
Purpose of fuse links:
- 43 – power supply for HBO electrics;
- 44/45 – control of ABS units;
- 46 – power supply to the ignition switch;
- 47 – signal to the cabin fuses located after the ignition switch;
- 51 – fuel pump, ECM, ECU relay, head fan, ignition coil protection (depending on modification), phase distribution, canister and DC 1 purge;
- 52 – air conditioning system clutch, radiator head cooler.
Separately, you should consider the protective relays located in the block:
- 299/1 – fog lights and headlight washer;
- 299/2 – turning on the stove;
- 597/1 – control of ABS and ESP systems;
- 597/3 – external optics switch drive, power supply to the interior fuse box;
- 784 – control of activation of the radiator fan and air conditioner.
Fuse box in the engine compartment (VAZ 11189 (8 cells), 21129 (16 cells))
The second part of the electronic safety system is located under the hood. In the figure, the mounting block is indicated by the letter “B” and is hidden under a plastic cover. To open the panel, snap off the plastic clips or unscrew 4 screws (depending on the modification).
For the 8 and 16 valve versions, the placement of the platform is the same.
Installing a cigarette lighter splitter on the Lada Largus
Special “doubles or tees” are sold for the car, allowing you to connect several electrical appliances. After disassembling the central tunnel, you need to connect the splitter directly to the network, observing the pinout. There are three wires connected to the cigarette lighter socket itself.
- The main plus. Guarantees heating of the coil itself. One end is connected to the battery, and power is supplied through a protective element rated at 15 amperes.
- The second plus. Designed to operate a backlight bulb. As a rule, it has a yellow, white or blue tint.
- Minus. The cord is black. It is a mass connected to the device, and the other end goes to the car body. All cables should be tightened with ties so that they do not dangle. A detailed video on how to remove the cigarette lighter of a Lada Largus car is posted at the end of the article.
Largus dashboard
The Largus instrument panel consists of a frame and a decorative trim. The frame is made of steel; it holds all the blocks and wires of electrical equipment installed in the cabin. Steering elements are also attached to it. The frame is part of the vehicle's power structure; it is attached to the base of the body and the A-pillars.
A decorative trim is a molded plastic part. It is screwed to the frame using screws. The steering wheel and the interior heating and air conditioning system are mounted on the decorative panel. It is also equipped with control instruments, linings and a glove box.
