Pinout and where is the diagnostic connector for VAZ-2112

Diagnostics of modern car models is carried out using a special diagnostic connector. It connects to a computer, which analyzes the current state of the vehicle, determines the malfunction and indicates it. If you have the appropriate equipment, you can look for breakdowns even at home. However, not all VAZ-2112 owners can find the diagnostic connector right away. Today we’ll talk about its location on the classic panel and on the Europanel. In which part of the car should I look for the required socket?

When is diagnosis necessary?

Computer diagnostics involves reading error codes, erasing them and correcting them. For this, various diagnostic adapters and systems are used. These include multifunctional stands, OBD connectors, portable readers and other devices. Thanks to diagnostic equipment and software, the slightest malfunctions in the vehicle’s control system and its main components are detected.

Using diagnostic systems, you can change parameters to increase the power characteristics of the machine. If a new car model comes out, you can reprogram the functions for the new equipment.

Computer diagnostics are usually carried out in the following cases:

• indicators on the dashboard light up, signaling any malfunctions;
• the driver has suspicions of a malfunction of any components or systems;
• check the condition of a used car before purchasing;
• Experts recommend diagnostics at least once a year.

Diagnostics using electronic equipment makes it possible to obtain real information about the technical condition of the car.

ELM327

Separately, we will introduce you to the ELM327 adapter, with the help of which many VAZ 2110 owners perform full diagnostics on their own.

ELM327 is one of the latest OBD developments. This scanner is used to check cars using a computer. The key advantage is that the device supports all known OBD protocols and interacts with many diagnostic programs. A USB cable is used to connect the device to a computer.

The software for the ELM327 is mostly free, although some software is available only for a fee.

The adapter can work on computers with different OS. Namely:

The full capabilities of the scanner can only be fully realized through properly selected software. For self-diagnosis, software for scanning the transmission and engine is available free of charge. Commercial versions of the programs allow you to additionally check other components of the car.

Key Features

Let's take a look at the capabilities that the ELM327 chip provides:

• Reads error codes and vehicle malfunctions;
• Displays codes and their descriptions;
• Exports data for printing, if necessary;
• Removes error codes;
• Displays data in metric and US measurement systems;
• Records, saves data, builds graphs;
• It has an acceleration counter from 0 to 100 km/h, which allows diagnostics on the go.

Many vehicle operating parameters must be checked while driving. Not all adapters are suitable for this, so it is important to choose equipment that suits your requirements.

Equipment

By purchasing this adapter, you get:

• High precision adapter based on ELM327 processor;
• OBDII cable;
• Cable for connecting to a computer;
• Disc with free software.

It is not necessary to have a powerful computer to operate the adapter and receive information. The parameters of the simplest laptops are quite enough to diagnose the VAZ 2110.

Self-diagnosis allows you to save a lot of money, get objective information about the condition of your car, and also save yourself from unnecessary financial costs that will certainly appear when you go to a service station.

Instructions for performing diagnostics

To diagnose a VAZ, a computer or diagnostic equipment is connected using a diagnostic connector.

Computer diagnostic socket

All broadcast codes are read by the scanner. They are stored in the controller’s memory until its power is turned off. Using special software, specialists decipher the codes and determine what malfunctions and failures exist in the system.

The diagnostic procedure consists of several stages:

1. Suspension diagnostics. This procedure is performed if uneven tire wear, knocking or humming is detected when driving at a constant speed, making sharp turns, or on an uneven road. And also in case of premature activation of the ABC, increased free play of the steering wheel.
2. Engine check. The power engine should be diagnosed if it runs intermittently, takes a long time to heat up, is difficult to start, as well as with increased fuel consumption, loss of power, the appearance of extraneous noise, or a decrease or increase in idle speed. During diagnostics, the electrical supply and ignition system are checked, and the pressure in the cylinders is measured (the author of the video is Pavel Master).

An automatic transmission is diagnosed in the following cases:

• no gear is engaged;
• When changing gears, noises, jerking, and slipping appear;
• increased fuel consumption;
• Oil leak detected.

During diagnostics, the scanner reads error codes of the automatic transmission control system, evaluates the readings of the throttle position and cooling system temperature sensors, as well as the position of the automatic transmission selector.

First of all, diagnostics are performed using a scanner. The scanner readings are deciphered and conclusions are drawn about problems in the system. At the second stage, analog testing is carried out - wiring, contacts, and batteries are checked. Next, an online check is carried out. The screen displays indicators of sensors, fuel injection, etc. Then the data obtained during posting is analyzed. At the last stage, the error codes stored in the controller’s memory are erased. After this, reinitialization is necessary.

OBD2 scanner for VAZ car – list of monitored parameters

1. Outputting and reading error/problem data from CU memory blocks;
2. Displaying actual values ​​of measured parameters;
3. Management and control of actuators;
4. Display of graphical information with values ​​during the check (graphs and tables);
5. Use of specialized ECU capabilities (depending on the manufacturer);
6. Testing and monitoring of electrical connection circuit components, correct installation of electrical circuit components (chips/sensors);
7. Regulatory (declared) data on controlled parameters;
8. Carrying out voltage measurements;
9. Carrying out resistance measurements;
10. Carrying out current measurements;
11. Using an oscilloscope to record the values ​​obtained during testing.
12. Definition of about 3000 error codes;
13. Engine speed - idling, operating code;
14. TOZH;
15. Fuel consumption;
16. Intake air temperature and air flow rate;
17. Absolute throttle position;
18. Oxygen sensor;
19. Fuel system and pressure indicators;
20. Read other data and faults.

A diagnostic device connected to the Lada control unit evaluates the accuracy and serviceability of the sensors. The result is a clear assessment of the technical condition and the opportunity to carry out repairs in a short time with minimal financial costs.

Pinout

If self-diagnosis is carried out, then you need to know the lining of the block. Pinout is the purpose of the contacts that are located on the block. Below is the OBD pinout.

Pinout of OBD II device for VAZ

“A” is the contact responsible for connecting the ground; “B” is the contact that is necessary to connect the L-Line; “M” is a contact that is used to connect K-Line; “G” - contact responsible for controlling the fuel pump; “H” - contact for +12V power supply.

You can diagnose your car yourself by connecting a scanner or other diagnostic equipment to the diagnostic connector. This will save time and money on visiting a car service center.

How to use

Before purchasing an adapter, make sure it is compatible with your car. After purchasing the adapter, it is important to correctly connect the scanner to the connector. As a rule, the OBD 2 connector is located in the passenger compartment under the dashboard. Models before 2006 usually have a 12 pin connector (GM), and to connect the scanner you will need a 16 pin adapter.

Information on the location of the connectors is presented in the table and photo below.

Location of diagnostic connectors and recommended auto scanners:

Location of connectors on some vehicles:

Pinout and where is the diagnostic connector for VAZ-2112

Diagnostics of modern car models is carried out using a special diagnostic connector. It connects to a computer, which analyzes the current state of the vehicle, determines the malfunction and indicates it. If you have the appropriate equipment, you can look for breakdowns even at home. However, not all VAZ-2112 owners can find the diagnostic connector right away. Today we’ll talk about its location on the classic panel and on the Europanel. In which part of the car should I look for the required socket?

ADJUSTING THE COMPUTER FUNCTION

Clock correction

Press button 4 in the “Current time” mode. At the sixth signal of the exact time, press button 1, this resets the seconds and rounds the clock readings.

Setting the current time (calendar)

• Press button 4 in the “Current time” (“calendar”) mode.
• Use buttons 5, 6 to set the desired hour (day).
• Press button 4.
• Use buttons 5, 6 to set the desired value for minutes (month).
• Press button 4 to complete the time (calendar) setting.

Where to look for the connector

It is important to know that on different cars the required socket is located in different parts of the car. Moreover, on some AvtoVAZ models it may be in a completely different place compared to another car. Let's look at several VAZ cars as an example:

• on the VAZ-2112, as well as on the 2110, as well as 2111, the socket is located to the right of the driver’s seat, immediately under the column;
• on models 2108, 2109 and 21099, the socket you need is located under the glove compartment, on a special shelf;
• on cars with a europanel it can be found in the center of the console, near the cigarette lighter. A special decorative cover is used to disguise it;
• on Lada Kalina cars, the connector can be found near the gear shift lever. As is the case with cars with a Europanel, it is hidden under a special cover;
• on a Priora you need to look for it right behind the glove compartment, on the wall.

Thus, on the VAZ-2112 the diagnostic connector is located on the right side of the driver’s seat. It is located immediately under the steering column and, in principle, is not so difficult to find. Inspect the bottom of the panel.

The first message on the screen of diagnostic equipment or a computer that causes panic among beginners is usually something like “No connection”, “No controller response” or something similar, but no less intriguing. The motor tester, for example, begins to offer options - from unconnected power to a hardware malfunction of the adapter. It’s good if the car with the immobilizer was the first to arrive for diagnostics and you are sure that everything is in order with the adapter. The reason for the lack of communication on cars without immo is trivial and is possible only in the domestic auto industry - a break in the diagnostic line running from the diagnostic connector to the ECU. The immobilizer uses K-Line to communicate with the ECU and is included in the diagnostic line break. If the immobilizer is not installed, then the diagnostic line hangs in the air and there is no connection with the computer. Apparently there was supposed to be a plug in this place, but... To restore communication, you simply need to install a jumper between pins 9-1 and 18 of the immobilizer connector (or install an immobilizer) as shown in the figure. In practice, to preserve the functions of smooth dimming of light, and simply to scare away pioneers, these two wires are cut and spliced, leaving the immo in the connector.

GAS diagnostic connector.

1 +12V 2 +12V from battery 10 L-Line 11 K-Line 12 Ground

Diagnostic connector VAZ

A - GND B - L-Line (may not be) M - K-Line G - Fuel pump control.

H - 12V. Constant from the battery through a fuse. /may not be.

The latest modifications of the VAZ, designed for EURO 3 (4) toxicity standards, use the standard European OBD-II connector.

Assignment of diagnostic block contacts

2 - J1850 Bus+ 4 - Chassis Ground 5 - Signal Ground 6 - CAN High (J-2284) 7 - ISO 9141-2 K Line

14 - CAN Low (J-2284) 15 - ISO 9141-2 L Line 16 - Battery Power

Location of diagnostic pads

VOLGA - under the hood, on the wall of the engine compartment, on the passenger side VAZ 2110 - to the right of the driver, next to the steering column of the VAZ 2109 Low panel - on the shelf under the glove compartment, next to the VAZ 2109 ECU High panel - behind the center console. VAZ 2108-2115 “Europanel” - on the dashboard, closed with a hatch. Chevrolet Niva - OBD-II, near the ignition switch. partially covered by the steering cover. VAZ 11183 “Kalina” - Under the niche for small items next to the gearshift knob. VAZ 21126 Priora - behind the glove compartment.

Chevrolet Niva - the control unit is located in the area of ​​the front passenger's feet. Access to the harness is only possible with the glove box removed; to remove the unit, you need to dismantle the glove box (“glove box”) and unscrew the fuses from the unit. To rewrite, the unit does not need to be unscrewed if there is a cable of sufficient length.

VAZ 2106i - The control unit is located in the place of the shelf under the glove compartment, where the ECU fuses, diagnostic block and PTF relay are located. All this is closed in a purely domestic way, with a plastic shield with huge gaps. To connect the diagnostics, the shield will have to be unscrewed, because despite its “flexibility”, it is not possible to insert the diagnostic connector.

Pinout

Knowledge of pinouts may be required if a car enthusiast wants to make an adapter for computer diagnostics with his own hands, or if you need to connect without one. Experts recommend buying ready-made devices without the need to make a plug yourself. However, if you do not have such an opportunity, and diagnostics need to be carried out urgently, we will consider two main pinout options used on VAZ cars of various years of manufacture. Until 2002, AvtoVAZ products used the following pinout option:

1. The 4th and 5th pins are GND outputs.
2. Pin 16 – +12 V (power line).
3. The 7th contact is the diagnostic line itself.

Since 2002, the pinout scheme has changed significantly. Now it looks like this:

1. Pin H – +12 V (power line).
2. Contact G – +12 V for the fuel pump.
3. Pin A – GND output.
4. Contact M – diagnostic line.

Ignition and engine control circuit

Here are the control diagrams for the following internal combustion engines:

• 21120 – January 5.1 or BOSCH M1.5.4N, Euro-2;
  21120 (Euro-2)
• 21124 – BOSCH M7.9.7, Euro-2;
  21124 (Euro-2)
• 21124 – BOSCH M7.9.7, Euro-3.

  
  21124 (Euro-3)

The elements installed in the additional mounting block are indicated in brackets.

Mounting block on the right side under the dashboard

How can you tell if your car is faulty?

There is a special lamp on the instrument panel with the inscription CHECK ENGINE. When you turn on the ignition, it lights up, and until you start the engine, a special program reads data from all systems and components of the car, thus transmitting data to the on-board computer to identify faults.

After you start the engine, the lamp should go out, but if it stays on for another 10 seconds, it means that some problems have been identified and error codes have been entered into the on-board computer programs. Communication with the controller is carried out using the diagnostic block.

CHECK ENGINE control signal on the instrument panel of a VAZ 2110

Calculation of codes

Most often, diagnostic program codes are “deciphered” using a special device. However, on VAZs it is not so difficult to do it yourself.

ECU January 4 for VAZ 2110

The diagnosis itself goes like this:

• Connect contact “B”, which has the diagnostic block and “ground”;
• Turn the ignition key to the third position, do not start the car;
• First, the aforementioned “CHECK ENGINE” lamp flashes code 12 three times in a row. It, in fact, does not signal any malfunction, but simply shows that the diagnostic programs are working. On the VAZ 2110 this happens in this order: the lamp blinks briefly once (which should be considered the designation of number 1). After a pause of at least two seconds, it flashes twice in a row (two). So we got the number two. And this is repeated three times so that the driver can understand these signs;
• Now you need to be careful not to miss any faults. After the diagnostic program has declared its serviceability, it will begin to display error codes, if any. In the same way - flashes and pauses.

Installing a new adapter

Modern adapters elm 327 with the OBD-II program (puncture) are suitable for the VAZ 2110 . You can also install them yourself. First you need to purchase an elm 327 and a cable for it. You already know the location of the diagnostic connector. Be sure to study the instructions, which indicate the pinout of the block and the location of each connector.

Connection diagram for ELM327 to 12 PIN diagnostic block

The pad can be removed quite easily. Insert your own cable into each connector of the block, making sure that the pinout of the elm 327 complies with the manufacturer’s instructions. Check that each connector is connected correctly and each cable is in the correct place. After this, the block is installed in its place.

Types of equipment used to check LADA

A list of diagnostic devices used not only in specialized car services, but independently, for example, in a garage. • Odometer correctors, with setting mileage values; • Models that support protocols, by reading information, erasing errors, codes are deciphered: ELM327 USB / Bluetooth / Wi-Fi running on the elm327 chip; • Vag adapter (cable) for later versions of the ECU and 12 pin pads; • Testers whose work is organized on the basis of oscilloscopes.

Diagnostic devices that support combination with ABS and SRS units, as well as using a CAN bus, are in demand.

Modern popular models

The best diagnostic scanners compatible with the VAZ have been selected for review. We pay attention to the following samples:

Scan Tool Pro

Scan Tool Pro is a compact adapter without an external environment, built on a universal microprocessor elm327 (basic) Chip version v.1.5 (PIC18F25k80). This diagnostic OBD2 scanner is used in conjunction with a laptop or smartphone; it has Wi-Fi and Bluetooth versions.

The device is practical and reliable, so it is sold out from official dealers very quickly. Reviews for this adapter are mostly positive, but it is difficult to purchase due to the shortage of original versions. Supports all common protocols and car brands.

Launch Creeder VII

Launch Creeder VII. A semi-professional tool for self-diagnosis of modern engine control systems and ECUs. Suitable for domestic cars equipped with an electronic control unit. There is an external display and built-in software.

This version has a complete base for Russian cars, the adapter is even suitable for VAZ 21124. Optionally, the kit includes adapters for various brands of cars.

Bosch KTS 590

Bosch KTS 590. Refers to professional diagnostic equipment and is more expensive than the previous car scanner. The device is connected to a laptop or desktop PC, and there is also an external display.

The kit includes an oscilloscope and a digital multimeter. It is possible to carry out not only computer, but also instrumental diagnostics of electrical circuits and connections. Well suited for car repair shops

Scanmatic 2

Scanmatik 2. The device has shown itself very well with Russian cars. Scanmatic 2 is characterized by fairly high operating efficiency; it reads information using a tablet or smartphone.

Supported protocols: OBDII/EOBD (13 x ISO-9141/ISO-14230 (KLINE); 1x High Speed ​​CAN (ISO-15765); 1x Single Wire CAN (GM-LAN). 1 x J1850 VPW; 1 x J1850 PWM; 1 x Medium Speed ​​CAN (GM-LAN).The kit includes adapters for various brands of cars, additional adapters can be purchased from an official dealer.