Repair of vaz 2112 16 valves do it yourself electrical equipment

In detail: do-it-yourself repair of a vaz 2112 16 valves electrical equipment from a real master for the site my.housecope.com.

Wiring diagram VAZ 2112 - general wiring diagram for electrical equipment and instruments, engine control unit and fuses. When servicing and repairing the engine management system of this and other cars of the VAZ family, always turn off the ignition. Disconnect the controller from the wiring harness when welding. The controller contains electronic components that can be damaged by static electricity, so do not touch the terminals with your hands. With the engine running, do not disconnect or repair electrical connectors.

1 - ignition relay; 2 - ignition switch; 3 - storage battery; 4 - neutralizer; 5 - oxygen concentration sensor; 6 - adsorber with an electromagnetic valve; 7 - air filter; 8 - mass air flow sensor; 9 - idle speed regulator; 10 - throttle position sensor; 11 - throttle assembly; 12 - diagnostics block; 13 - tachometer; 14 - speedometer; 15 - control lamp "CHECK ENGINE"; 16 - immobilizer control unit; 17- ignition module; 18 - nozzle; 19 - fuel pressure regulator; 20 - phase sensor; 21 - coolant temperature sensor; 22 - spark plug; 23 - crankshaft position sensor; 24 - knock sensor; 25 - fuel filter; 26 - controller 2112; 27 - fan switch on relay; 28 - electric fan of the cooling system; 29 - relay for turning on the electric fuel pump; 30 - fuel tank; 31 - electric fuel pump with a fuel level indicator sensor; 32 - gasoline vapor separator; 33 - gravity valve; 34 - safety valve; 35 - speed sensor VAZ-2112; 36 - two-way valve.

Video (click to play).

A distributed phased injection system is installed on the VAZ-2112 engines and parts of the VAZ-2111 engines: the fuel is supplied by the injectors alternately in accordance with the order of operation of the cylinders, which reduces the toxicity of the exhaust gases. In this case, a phase sensor is installed on the cylinder head, and a disc with a slot in the rim is installed on the camshaft pulley.

- nozzles;
- spark plug;
- ignition module;
- diagnostics block;
- controller;
- block connected to the instrument panel harness;
- main relay;
- main relay fuse;
- electric fan relay;
- fuse for the controller power supply;
- electric fuel pump relay;
- fuse for the power supply circuit of the electric petrol pump;
- mass air flow sensor;
- throttle position sensor;
- coolant temperature sensor;
- idle speed regulator;
- knock sensor;
- crankshaft position sensor;
- camshaft position sensor (phases);
- APS control unit;
- APS state indicator;
- speed sensor;
- electric petrol pump with fuel level sensor;
- sensor of the control lamp of oil pressure;
- gauge for the coolant temperature gauge;
- oil level sensor;
- block connected to the ignition system harness;
- a combination of devices;
- mounting block;
- electric fan of the cooling system;
- ignition switch;

A - block connected to the harness of the ABS salon group; B - block connected to the air conditioner harness; C - block connected to the block R of the front harness; D - wire connected to the ignition switch (backlight lamp); E - a block connected to the blue-white wires disconnected from the ignition switch; F - to the “+” terminal of the storage battery; G1, G2 - grounding points; L - contacts of the block to the trip computer; M - contact of the block to the block of the on-board monitoring system; N - contacts of the block of the harness of the instrument panel and the front harness; R - block connected to block C of the ignition system harness; Z - to the “B +” terminal of the VAZ-2112 car generator.

Fuse number Amperage, A Protected circuits

K1 - lamp health monitoring relay;
K2 - windshield wiper relay;
K3 - relay-interrupter for direction indicators and alarm;
K4 - relay for switching on the dipped headlights; K5 - relay for turning on the high beam headlights;
K6 - additional relay;
K7 - relay for turning on the rear window heating;
K8 - auto backup relay.

Here are the control circuits for the VAZ-21120 and 21124 engines. They were installed on Lada hatchbacks of the 2112 family. The on-board network diagram is also given. We are talking about engines containing 16 valves, and the wiring diagram for the VAZ-2112 consists of separate parts: engine control, general circuit. Headlight supply circuit, dimensions, etc. discussed in the first chapter.

Wiring diagram for a car in a hatchback body (click on the picture to enlarge)

The letters designate the terminals to which it is connected: A - Front right speaker, B - Radio tape recorder, C - Injector harness, D - EUR diagnostic connector, D - Front left speaker, E - Heater controller diagnostic connector, F - Rear right speaker, W - Rear left speaker, I - BK connector, K - Glass heater thread, L - Fifth door actuator, M - Additional brake light.

All door switches remain open when the doors are closed. We provide a wiring diagram for the VAZ-2112 with a description, and information about the limit switches will be useful to signal installers.

Note that starter power can be connected differently. Either the current to terminal 50 is supplied directly from the lock, or through relay 10. The second option (as in the diagram) is less common.

The three relays shown in the diagram are always installed on a block fixed to block 35 from above (see photo).

Main fuse and relay box

Here item 5 is "relay 9" and item 7 is "relay 10".

When the ignition is on, relay 11 closes the contacts. This allows the operation of the power windows controlled by selectors 3, 4, 9 and 10.

Windows do not work without ignition

The diagram does not require any other explanation.

The diagram shows four actuators, as well as a control unit 3. Actuator 7 is located in the driver's door.

Wiring diagram - VAZ 2112 wiring. Replacing the wiring harness in the rear of the car. Installing fog lights

The products of the domestic auto industry have always aroused the desire for self-service among car owners. There are several reasons for this: from high prices for service stations and to the unprofessionalism of domestic servicemen. While many technical operations can be performed on the car yourself.

Wiring on the VAZ 2112: general wiring diagram for electrical equipment and devices

The vehicle manual warns that harsh climatic conditions will negatively affect the electrical components of the vehicle. And one of the first to suffer is electrical connectors and wires.

Girls in revealing clothes are a favorite "bait" among scammers

And since the price of parts is low, the car owner can replace:

Collapsed terminal block;
Broken insulation wire;
Units and devices approved for installation from other models of the VAZ family.

Wiring diagram for VAZ 2112 - harness and connectors of the rear of the car

Advice: this requires a VAZ 2112 wiring diagram with decoding in order to clearly understand which electrical circuit is responsible for what and what it controls.

Let's take a closer look at the above diagram:

common terminal block of the wiring harness for connecting the wiring coming from the instrument panel (on the diagram under No. 1);
a terminal block for the wiring harness for connecting to the wiring of the dashboard of vehicles in the "norm" configuration and for connecting to the side door harness for cars in the "luxury" configuration (on the diagram # 2);
rear harness terminal block for connection to the instrument panel harness (no. 3);
two 4-pin terminal blocks (for modifications 2112-3724558-10 16 valves). Marked in the diagram under No. 4 and No. 5;
side direction indicators (under No. 6 - left), under No. 7 - right);
food for the plafond of individual lighting (number 8 on the diagram);
power supply for the general lighting of the passenger compartment (No. 9);
handbrake sensor connector (no. 11);
rear lights (on the diagram # 11 - left, # 12 - right);
interior temperature sensor connector (No. 13 in the diagram);
connector for connecting 4 interior switches for the lighting plafond (on the diagram under Nos. 14,15,16 and 17);
connector for trunk lighting (no. 18);
backup block of the wiring harness (on the diagram No. 19). Can be used as a connector to connect to the side door wiring harness;
a block for connecting a wiring harness for license plate lamps (on the diagram under No. 20);
the grounding points of the wiring are indicated in the diagram as A and A1.

Individual parts of the wiring are also subject to replacement with their own hands. In particular, the additional wiring harness in the trunk of the car (pictured below).

It connects to the mains:

rear window heating system;
rear wiper electric gear;
additional brake light;
trunk lock motor.

Wiring diagram VAZ 2112: lighting and electrical equipment of the trunk

The wiring of the VAZ 2112 of this wiring harness has the following designations:

through terminal block # 1, the wiring harness is connected to the main wiring of the vehicle. Includes 4 wires: red, yellow-blue, white-blue and pink-black;
is similar in functionality and block No. 2. Uses wires: green, white, black and red;
terminal No. 3 is responsible for the operation of the electric motor unit and the gearbox of the rear window wiper. Contacts are powered by 4 wires: black, pink-black, yellow-blue and white-blue;
for connecting the rear lights, terminal blocks under No. 4 and 5 are responsible;
terminal # 6 energizes the trunk lock motor. Wires - white and black;
terminal block # 7 is responsible for connecting the rear window heating (two red wires);
the additional brake light is powered from terminal block # 8 (black and red wires).

Car owners can independently equip the car with fog lights. For ease of installation, you can watch a video from the forums where craftsmen share their experience of such work.

Wiring VAZ 2112 for fog lights (Lux grade)

Conclusions: in fact, replacing the old wiring in the rear of the car is much easier than in the engine compartment or inside the cabin. And the schemes proposed in the article will help you figure it out faster and prevent mistakes. Image - Repair of vaz 2112 16 valves do it yourself electrical equipment

Replacing worn out parts with new ones, determining where and why it knocks, aligning something and putting it back in place will work even without special skills and a specific tool. It will be enough to have one desire to figure everything out, call a friend in the garage, watch a video or read this article. This would be impossible if you had a foreign car stuffed with electronics. And if you are also a happy owner of a VAZ-2112, then you have come to the right place.

Although domestic cars will be simpler than foreign cars, they all consist of a huge variety of different components, power and fuel units and, of course, sophisticated electrical equipment. Not without a modern electrical part and in such a familiar VAZ-2112. The right turn stopped working, there is no dipped headlights, the horn is silent and does not buzz, a light bulb in the trunk has burned out or the radiator fan has stopped turning on. What to do, where to run and who to ask?

Every car owner should get acquainted with the electrical part of his car at least in general terms. Where to begin? Rummage in the glove compartment, and if your wife has not yet put things in order, you can find there the "Manual for the operation of the car VAZ-2112". Among other things, this necessary book contains a lot of important information on the electrical part. Having penetrated a little, in the future you will not only save on repairs at the service station, but also avoid ordering a tow truck, when suddenly your "beloved" will be rooted to the spot in the middle of the field.

The machine and its electrical circuit cannot exist separately, this union is inviolable, like the foundations of the Chinese wall.

Almost all systems, one way or another, depend on electricity and in the absence of it, they not only refuse to work correctly, but do not function at all.

Here are just a few of these interactions:

ignition of the combustible mixture in the fuel system of both carburetor and injection types of the engine;
supply of electricity to the starter when starting the engine;
instrument panel illumination at night;
informing other road users about the desire to carry out a maneuver using a light indicator "to the right" or "to the left";
playing a sound signal to prevent an accident;
turning on the side lights to identify the car at night.

We turn to the wiring diagram itself.

Among other things, the presence in the "Manual" of printed electrical diagrams with detailed descriptions makes it an indispensable assistant in not only accurately determining the symptoms, but also "prescribing treatment", finding out the most important question of why it hurts, and not just where.

It is important to understand according to our diagram what the following auxiliary equipment is connected to:

sound signal;
wipers;
radio or radio;
interior lighting;
heated rear and front glass;
power windows (if available).

The task is important for the reason that in the car there is a certain interdependence of some (main) systems from others (auxiliary). Some work in pairs, while others work in threes or even four. If you know this connection for sure, you will immediately find your way. If there is no current supply to the glow plugs, then, most likely, other subsystems working in the same bundle are not functioning for you either.

Some of the constituent parts are easier to see by categorizing them in major categories. Let's start our research.

Battery. The battery is a set of usually 6 modular "cans" complete with special lead plates and immersed in an acidic environment.

usually short-term supply of voltage to various systems, even with the engine off;
starting the engine by ensuring the unhindered supply of the required current power to the ignition systems.

Generator. The device is vital for taking over the baton from the battery after starting the engine. Provides all systems with the necessary power and even recharges the battery while the car is moving. It copes with the task best with a warm engine.
Ignition system. Provides the ability to ignite the fuel mixture in the heart of the car - the engine cylinders. In modern models, including the VAZ-2112, a system is used that makes it possible to have a contactless method of igniting fuel, which replaced the contact one, which is outdated at the moment both morally and technologically.

Let's pay close attention to the merits of this modern method in order to fully understand how it works:

great strength and retention time of the electric charge;
Glow plugs have a longer service life;
the connections on the contacts remain in working order for an infinitely long time;
the motor starts quickly and evenly;
the car has great starting power and fuel economy;
the fuel mixture burns more efficiently.

This problem occurs due to the fact that the battery charge is disappearing somewhere. It does not disappear by accident, but always for some reason.

you leave the car on the street at an ambient temperature of -20 degrees and below;
the battery life is running out;
for some time in your cabin the radio remained on, which led to a loss of charge power.

In all these cases, two types of treatment are usually used: first, to urgently recharge, and secondly, to buy a new battery. If you pull and drive on a discharged battery, then soon you will not even be able to remove the car from the alarm. You will have to manually remove the terminals, trying to silence it. The situation will immediately improve as soon as the battery is charged again.

First of all, the red light will come on, signaling a failure or serious problems in the electrical systems of the car, even if you installed the euro panel instead of the factory version. Immediately take the following steps to determine it and in no case ignore the warning, for this the light bulb was made in an alarmingly red color. Don't ignore the problem!

see if everything is ok with the generator. Whether it is well worn or sagging. This procedure must be done with all versions of the fuel system, both carburetor and injection. It is also not decisive whether you have a standard equipment or 16 valves;
we check the fuses on the VAZ-2112 according to the electrical equipment diagram, which we talked about above. The underside of the safety box cover will also be of great help. There are clues that the diagram will help to decipher. Replace the burnt element and try to start the car again. If the light goes out, then we have solved the problem;
if the red light on the dashboard does not diminish, you need to check if the battery terminals are tight, if they are oxidized. Is the wire from the battery to the alternator and starter damaged?

These are some recommendations for eliminating widespread difficulties associated with a malfunction of the electrical networks of the VAZ-2112 car with 8 or 16 valves. Of course, it is not possible in this overview to investigate all faults and provide information on how to fix them. For example, where to look for the cause of de-energizing "turn signals" or pumps that ensure the stable operation of the vehicle.

It's great that the cooperation of car enthusiasts and their timely tips help save time, money and hassle when the car needs to be repaired.

There is a special offer on our website.You can get a free consultation of our corporate lawyer by simply asking your question in the form below.

Basic wiring diagram for the car VAZ 21102, 21112, 21122. The wiring diagram is shown for injection 8 valve cars of the 10th family, including the mounting block (in a separate diagram).

The name of the electrical elements according to the given wiring diagram

A - pads for connecting the rear window washer motor
V - pads for connecting the injection harness
WITH - to the warning light harness block
D - block for connection to the on-board computer
E - to the headlight wiper harness block
F - block for connection to the fuel level sensor in the electric fuel pump module
G - to the rear window heating element
H - block for connecting an additional brake signal
J - to the gearbox of the trunk lock

The diagram does not conventionally show that in the instrument panel wiring harness, the second ends of all wires of white, black, orange, white with a red stripe and yellow with a blue stripe are interconnected at the same points.

Vehicle wiring is one of the main components that ensure the normal operation of a car. This material will allow you to understand the main features of the VAZ electric circuit of the tenth model. What the electrical circuit of a VAZ 2110 car looks like, what are the malfunctions characteristic of it - read about this below.

It doesn't matter what engine the Lada is equipped with - it can be a VAZ 2110 injector or a 2110 carburetor - the basis of the electrics in this model will not differ.

Below are the main features that the VAZ 2110 wiring has:

The first models of 8- and 16-valve VAZ 2110 cars were equipped only with carburetor engines. A few years later, the domestic automobile concern began to equip its vehicles with injection engines. Of course, the injection model is more advanced, but today in Russia and the CIS countries tens of thousands of carburetor machines with 8- and 16-valve internal combustion engines are used.

Most likely, the owners of a dozen are interested in the question - on carburetors and 21102 injectors the circuit is different or not? In principle, there are no special differences between these versions in terms of the electrical circuit. Almost all systems used on injection 8- and 16-valve engines are identical to carburetor units. Accordingly, if you need to replace the carburetor engine with an injection one or install additional devices, then there will be no problems with this. If you look into the engine compartment, you can notice that both versions of the car even have the same outputs and plugs.

Car wiring diagram 2110

One of the main points to consider when replacing a carburetor with an injector is the connection of the fuel pump. In order for the fuel pump to always work correctly, it is necessary to additionally lay the wiring for its power supply to the control unit.

In addition to the fact that the electrical wiring in the carburetor and injection versions is virtually identical, the injector has certain features. For example, it is equipped with fuses, and there are more sensors in the injection versions of the car.