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.

Actuators, central locking unit and one limit switch

It would seem that everything is simple here. But in the description on the VAZ-2112 wiring diagram, the main thing is usually not reported: the white cord is the input for the “Open” command, the brown one is “Close”.

There is a variant of the circuit where only the limit switch is located in module 7 (without an actuator).

Relay K4 switches on the low-beam headlights, K5 switches on the high-beam headlights.

Single-filament headlamps

Steering column selector 3 only activates the relay K5. But in the explanation for the wiring diagram on the VAZ-2112 it is said that:

Selector 3 is used to select the "near / far" mode;
With its help, the high beam lamps are briefly turned on.

It's simple: when switch 4 is in position II, relay K4 closes its contacts. And this means that in the "high beam" mode, all lamps work at once.

Side lights 1 and 6 are turned on by switch 3. From it, the current flows through the main unit 2, or rather, through the lamp health relay. In the diagram, instead of a relay K1 shows jumpers.

Dimensions, number illumination, brake light, instrument illumination

The license plate lighting is lamps 8. They come on regardless of the relay actuation. The operation of the reversing lamps also does not depend on the K1 relay, as well as on the switch 3. It is regulated only by the limit switch 10. The brake light lamps (limit switch 11) are switched on in a similar way.

The brightness of the instrument illumination is regulated by a resistor 9. But there is a nuance: switch 3 must be in position I or II. These positions correspond to the inclusion of indicator 5 (on the tidy).

Turn signal lamps 1, 5 and 6 are activated by switch 7. A relay-breaker K3 is included in the power circuit of these lamps, which alternately closes contacts 49a-49 and 49a-31.

The basis of the circuit is a relay-breaker

Turn signals do not work without power supply from the ignition switch. There is also the "Alarm" operating mode when:

Switch 4 is in the up position;
The current does not come from the ignition switch, but from terminal 3 of the Ш4 connector.

If the contact in the socket of one of the lamps is broken, the operating frequency of relay K3 is doubled. In the normal state, it is equal to 1.2-1.9 Hz.

We give control schemes for the following internal combustion engines:

21120 - January 5.1 or BOSCH M1.5.4N, Euro-2;

Auto VAZ-2112 was produced at AvtoVAZ from 1998 to 2009, in Ukraine from 2009 to 2014. The following are colored wiring diagrams (injector and carburetor) with a description of all elements for various modifications. The information is intended for self-repair of a car. Electrical diagrams are divided for ease of viewing through a computer or smartphone into several blocks, there are also diagrams in the form of a single picture with a description of the elements - for printing on a printer in one sheet.

For diagnostics and self-repair, first see if everything is in order with the generator. Whether it is well worn, it does not sag. This procedure must be done with all versions of the fuel system, both carburetor and injection. We check the fuses according to the wiring diagram. 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. It is necessary to check whether the battery terminals are tightly fitted, whether they have oxidized. Is the wire from the battery to the alternator and starter damaged?

VAZ-21120... Modification with a 16-valve injection engine with a volume of 1.5 liters and a capacity of 93 horsepower. The car was equipped with 14-inch wheels. This modification has a problem with the bending of the valves when the timing belt breaks. The problem can be solved by increasing the depth of the grooves in the piston crowns.

VAZ-21121... The car was equipped with a 1.6-liter VAZ-21114 8-valve injection engine with a capacity of 81 horsepower.

VAZ-21122... A budget modification with an 8-valve VAZ-2111 injection engine. The car was produced without power windows, the rims were 13 inches, the brakes were not ventilated from the VAZ-2108 car.

VAZ-21123 Coupe... Three-door, five-seat hatchback. The only two doors are 200 millimeters wider than the five-door hatchback, and they are mounted on new strong hinges. The rear arches of the car have become wider. The engine was installed with a 1.6-liter, 16-valve, 90-horsepower injection engine. The car was produced from 2002 to 2006 in small batches, the reason for this was the expensive cost of the car.

VAZ-21124... Modification with a 1.6-liter 16-valve VAZ-21124 injection engine. Produced from 2004 to 2008. For this type of engine, the problem with the bending of the valves has been solved. For this, the depth of the grooves in the piston crowns was increased (up to 6.5 mm). In addition, the design of the cylinder block was changed to achieve a working volume of 1.6 liters, for which its height was increased by 2.3 mm, respectively, the radius of the crankshaft crank was increased by 2.3 mm. There were also a number of other minor changes.

VAZ-21128... The luxury version of the car produced by CJSC "Super-Auto" was equipped with a 16-valve VAZ-21128 engine with a volume of 1.8 liters and a capacity of 105 horsepower.

VAZ-2112-37... A racing modification of the VAZ-2112, prepared for the "ring" in the Lada Cup scoring group. The car was equipped with a 1.5-liter VAZ-2112 engine with a capacity of 100 horsepower. The race car was equipped with a roll cage, an external aerodynamic kit and a front strut brace.

VAZ-2112-90 Tarzan... All-wheel drive modification with a VAZ-2112 body on a frame chassis with a transmission and suspension parts from the VAZ-21213 "Niva". It was also equipped with a 1.7 or 1.8 liter engine from the Niva.

Wiring diagram VAZ-2112 16 valve injector - full view

A is the grounding point of the instrument panel harness.

useful tips for a motorist

- 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;

Fuse number Amperage, A Protected circuits

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 understand everything, 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.