How to remove the electronic engine control unit of a Lada Granta. Where is the Lada Granta ECU located?

The ECU has become an integral part of a modern car. The domestic Lada Granta model is equipped with such a device, labeled as “M74 CAN”. The module allows you to automate most processes occurring in nodes and systems. The control function of the ECU is achieved due to the presence in the units of various types of sensors that send signals to the “brain center” of the car.

Over the long period of operation of the Lada Grant, an annoying drawback of the ECU was identified - its insufficient sealing and sometimes the ECU pinout is required. Penetration of moisture inside the unit casing provokes burnout of the microcircuit, which subsequently ends in the need to replace the device.

The ECU is located at the bottom of the front panel (under the glove compartment) opposite the front passenger seat and is hidden from view by layers of sound-insulating material and upholstery on the inner surface of the bottom. Now you know where the ECU is located, all that remains is to find out other details.

Grant timing belt

Electronic control unit Lada Granta

Today, cars are no longer produced that are not controlled using electronics and software. An ECU is a control system, a controller. The ECU is the “brain” of any car. The controller, as already mentioned, receives various signals from sensors that are located on all important parts of the car. Sensors are located everywhere, from the fuel system to the chassis and wheels. Next, the control unit processes the received data. The ECU is designed to provide the main components of the car with more efficient and safe operation.

The ECU is a special chip that ensures trouble-free and proper operation of the main vehicle systems. If the chip fails, then the entire car fails. Like any electronics, this microcircuit can also be either reflashed or completely replaced. The ECU chip is enclosed in a sealed metal case.

In a car it can be found under the instrument panel. The plant uses the ECU to enter all the basic parameters of the engine and other main components, as well as the algorithms by which the engine and the car as a whole will operate. Let's look at the ECU that is equipped with the Lada Granta.

The main sensors and the control unit itself are integrated into the electronic engine control system, or ECM. It is here that the ECU chip exchanges data, and then the main controller controls the engine, injectors, regulates idle speed and the operation of many other components. To find out which unit is in the Grant and what version of firmware it is flashed with, it is not necessary to disassemble the car. This information can be found in the technical passport. It is duplicated on the block itself. This data is very important; without it, flashing or new firmware of the Lada Grant is impossible.

The ECM includes a system that is responsible for self-diagnosis. This system always checks whether the sensors are working correctly. If any data does not match anywhere, the self-diagnosis system informs the car owner about this in the form of error codes. The system stores all errors in its RAM.

Engine control modules [ edit | edit code]

">Company controllers

Bosch M1.5.4 (55 Pin) (1.45/1.5l., 8kl.) (Russia-83) Simultaneous injection.
Bosch M1.5.4N (55 Pin) (1.5 l., 16 kl.) (Euro-2) In pairs - parallel injection / Phased injection.
Bosch MP7.0HFM (55 Pin) (1.5/1.7l.,8/16kl.) (Euro-2/3) In pairs - parallel injection./Phased injection.
Bosch M7.9.7 (81 Pin) (1.5/1.7l.,8/16kl.) (2003 – 2007) (Euro-2/3) In pairs – parallel injection./Phased injection.
Bosch M7.9.7+ (81 Pin) (1.5/1.7l.,8/16kl.) (2005 – 2011) (Euro-3) Phased injection.
Bosch ME7.9.7 (Euro-3) Phased injection.
Bosch ME17.9.7 (Euro-3) Phased injection.

">Controllers

Delphi MT20 (Euro 3)
Delphi MT80 (Euro 3/4/5/6)
Delphi MT92 (Euro 3/4/4/6) – Gasoline Direct injection (GDi).
Delphi AC Delco E39/E39A (Euro 2)
Delphi AC Delco E73
Delphi AC Delco E78
Delphi AC Delco E83
Delphi MR140

">Controllers

GM EFI-4 (24/32/32 Pin) (USA-83) – Single injection.
GM ISFI-2S (24/32/32 Pin) (1.5 l. 8/16 cells) (USA-83/Euro-2) – 8 cells. in pairs - parallel injection, 16kl. phased injection
GM ITMS-6F (Euro-2) – In pairs – parallel injection.

">Controllers

Simtec 70 (Euro 2) Phased injection.
Simtec 71 (Euro 3) Phased injection.
Simtec 75.1 (Euro 4) Phased injection.
Simtec 75.5 (Euro 4) Phased injection.
Simtec 76 (Euro 2/3)
Simtec 81 (Euro 5) Direct injection.

">Controllers

The January xxx and Mxx controllers were produced at two different factories - Itelma (The first element in the firmware designation is the letter “I” in the ECU marking) and Avtel (The first element in the firmware designation is the letter “A”.

January 4 (24/32/32 Pin) (1.6l., 8kl.) (Russia-83) In pairs - parallel injection. (The label contains the designation of the debug version “Kvant”.)
January 4.1 (24/32/32 Pin) (1.5l., 8/16kl.) (Russia-83) (1998) Phased injection. (The label contains the designation “Quantum”.)
January 5.1 (55 Pin) On the label: NPP AVTEL LLC, TU 4573-004-45886863-99, .
January 5.1.1 (55 Pin) On the label: NPP AVTEL LLC, TU 4573-004-45886863-99, . (1.5 l., 8 cells) (Euro 0) Simultaneous injection.
January 5.1.2 (55 Pin) On the label: NPP AVTEL LLC

">Controllers

VS 5.1 1411020-02 (1.45l, 8kl.) (Russia-83) Simultaneous injection.
VS 5.1 1411020-72 (1.5l, 8kl.) (2003- ) (Russia-83) Simultaneous injection.
VS 5.1 1411020-62 (1.5l, 8kl.) (2003-) (Euro 2) Pair-parallel injection.
VS 5.1 1411020-42 (1.5l, 16kl.) (2003-) (Euro 2) Phased injection.
VS 9.2 (Euro 4) Used diesel engine UAZ 3151 (Hunter).

T11183 (Euro 2/4) (1.6l, 8kl.)) Pair-parallel injection.
T11186 (Euro 4) (1.6l, 8kl.)
T11194 (Euro 3) (1.6l, 16kl.)
T21067 (Euro 3) (1.6l, 8kl.)
T21114 (Euro 2/3) (1.6l, 8kl.)
T21116 (Euro 4) (1.6l, 8kl.)
T21124 (Euro 2/3) (1.6l, 16kl.)
T21126 (Euro 3/4) (1.6l, 16kl.)

">Controllers

In the designation of the firmware January 7.2 and Mikas 10 there are the following designations: (I – Itelma) (A – Avtel).

January 5.1 (55 Pin) (1.5 l., 8/16 cells) (Euro 2) On the label: , TU 4573-004-45886863-99. (1999 -) Simultaneous injection.
January 5.1.1 (55 Pin) (1.5 l., 8 cells) (Russia-83) Simultaneous injection.
January 5.1.2 (16 grades) (Russia-83) Simultaneous injection.
January 5.1.3 (1.5 l., 8 cells) (Euro 2) In pairs - parallel injection.
I 7.2 (81 Pin) (1.5/1.6l., 8/16kl.) (Euro 2) (2004 – 2007) Pairs - parallel injection. / Phased injection.
I 7.2M (81 Pin) (1.6l., 8/16kl.) (Euro 2) (2007 – ) Pairs - parallel injection. / Phased injection.
M10.3 (Euro 2/3).
M73 (1.4/1.6l., 8/16kl.) (Euro 3) (2007 –) Phased injection, works without a camshaft position sensor (phase sensor).
M74 (1.6l, 8/16kl.) (Euro 3/4) Phased injection.
M75 (1.6l, 16kl.) (Euro 4) Phased injection.

A modern car is more than just four wheels and an engine. This is a smartphone on wheels. The operation of all systems of a modern car is controlled by a huge number of different sensors. This information is then analyzed by a special computer and other electronic components. The more expensive the car, the more different electronic options it has. All this “orchestra” is controlled by one small box - this is the ECU. What it is? This is an electronic control unit. We'll talk about it today.

Location of the Lada Granta ECU

We can talk for a long time about how important the correct operation of the electronic control unit (ECU) is. The functioning of the heart of your car depends on it: from increased fuel consumption to the fact that the car may stall as a result of incorrect operation of the controller.

I would like to immediately convey a special greeting to the designer of AvtoVAZ, who came up with this arrangement of this block. In my opinion, I can't think of a worse place. See for yourself.

The ECU is located under the glove compartment under the passenger's feet and hidden under the upholstery. The upholstery is attached to the body on the right with a self-tapping screw.

If your interior heater (radiator) leaks, the antifreeze will go straight to the control unit, causing almost 100% failure. Even though the Lada Granta is initially equipped with a good quality imported Visteon radiator.
As you correctly noted, water can get in from under the hood. The rubber plugs on the Lada Granta are not of very good quality, so when they dry out, water will flow onto the controller. To prevent this from happening, check the condition of the rubber plug.
If the drainage hole (which is shown in the video below) becomes clogged, water may flow into the cabin.

In general, as you understand, the location of the ECU on the Grant is not the best! So we just need to face it.

How to check mass with a multimeter

Disconnect the negative terminal of the battery

We take a multimeter and switch it to resistance measurement mode up to 200 Ohms. We check the resistance of the probes themselves by connecting them together

The resistance of the probes themselves is 2.1 Ohms.

Now we connect one probe to the engine. At least here

And the second probe is to the engine control unit, which, in turn, is screwed to the body

We look at the multimeter readings. So what do we see? But we usually see the same 2.1 Ohm

What happens - the mass resistance of the engine - the body has practically no resistance? Is everything perfect? Is the engine and body weight OK? What is the problem then? Is the starter defective or are otherworldly forces overcoming you?

The whole thing is much simpler. What is a mass chain in the understanding of an ordinary person? This is just a piece of wire that connects the engine to the body. Just a piece of wire! If we connect ohmmeter probes to the ends of this wire, then we will find out its resistance. It will be minimal - it’s just a piece of copper wire. Right? Right.

If we connect the voltmeter probes to the ends of this wire, we will see zero voltage. After all, where will the potential difference come from on a single piece of wire? Right? Right.

Now let's connect our voltmeter to this ground wire on the car. That is, as when measuring resistance, one probe is to the engine, and the second to the body. They are connected by this piece of wire. Right? Right.

We switch the multimeter to the mode for measuring constant voltage up to 2 Volts. We start the engine and look at the device display.

Oops. And we have tension!

How can this be - we are connected to the ends of one wire, and we have voltage.

So I showed off my artistic creativity and painted a picture of what was happening

These values on the multimeter display are nothing more than the voltage drop on our ground wire! Even though it looks great and has minimal resistance, it still drops voltage. Moreover, the greater the consumer current in the circuit, the greater the voltage drop on this wire will be, which can reach several volts!

This is the situation. And the mass of the engine and body is not as good as it seemed at first, and problems from it are inevitable.

How to come out of such a situation as a winner?

First, it is necessary to periodically service this section of the chain.

Unscrew the mass on the body

Do the same with the mass on the engine.

But this doesn't always help. The fact is that this chain still has weak points - crimps.

Crimping lugs, crimping on battery terminal

All this oxidizes over time and cannot fully perform its function.

It is necessary to either re-crimp these connections, or it is better to change these wires sometimes.

Here is a video on the topic of engine mass - body

Well, ideally you can lay additional ground wires: Generator - body

How does the electronic unit on Grant work?

Before making changes to the car's firmware or performing diagnostics, you need to consider the basic principles. As much as some would like to jump right into making practical changes, you need to understand how the electronic “brain” works.

Any computing system, be it an ECU or a home PC, is a storage device. A home PC contains photos, videos, games, and work software. The computer constantly stores the user’s actions, errors, and data about software failures. All this is hidden among system files hidden from view.

The Lada Granta electronic control unit is also a computer, only the tasks it is designed to solve are more specific. There is also diagnostic information here. It is stored in RAM. This memory stores all the data that comes from various sensors. Information is stored until the block calculates everything it needs for some actions, then the information is erased from memory.

When it comes to diagnostic information, the car owner must be very careful. RAM cannot operate without a power source.

The control unit is a mini computer with specialized functionality

However, in addition to the RAM, there are other memory blocks of the controller. They are completely independent of nutrition. The data stored in them is unchanged. Unchangeable until new firmware is updated. These are PROM and ERPZU.

The first chip stores all the firmware data that was made at the factory. All the original algorithms and operation schemes of all nodes are embedded here. All diagnostic information, calibration data, vehicle weight, engine power and other Grant parameters are also stored here.

The second chip stores anti-theft information. Here are the codes that are on the alarm keys. If the codes do not match, then Grant will not go.

Features of the ECU for Lada Granta

The controller in this car has one feature. Thanks to it, there are enormous opportunities to make changes to algorithms and data.

A special feature is the CAN bus. The technologies used to transmit digital data are a highly complex system. However, it makes driving easier and improves reliability. This is achieved due to the higher speed of calculations based on information from sensors. A complex system in an ECM is a clear logical diagram. This makes it possible to eliminate failures in the electronic unit.

The bus uses broadcast technology to transfer data more efficiently. When additional sensors or other equipment appear, there is no need to make modifications to the firmware. This scheme allows you to increase the reliability of the control of vehicle components and saves wiring.

The bus allows you to combine a huge number of different sensors, control units and all sorts of systems without being tied to a specific control system in the engine. An immobilizer that runs on this bus can easily work with all devices.

Removing the controller (ECU) Lada Granta

Tools:

Ratchet wrench
Extension
10 mm head
Medium Phillips screwdriver

Note:

Remove the controller for replacement or when performing vehicle repair operations that may cause damage to the electronic components of the controller (for example, when drying the vehicle in a drying chamber after painting, etc.).

1. Before removing the controller, disconnect the wire terminal from the negative terminal of the battery.

Location of the Lada Granta ECU

We can talk for a long time about how important the correct operation of the electronic control unit (ECU) is. The functioning of the heart of your car depends on it: from increased fuel consumption to the fact that the car may stall as a result of incorrect operation of the controller.

The ECU is located under the glove compartment under the passenger's feet and hidden under the upholstery. The upholstery is attached to the body on the right with a self-tapping screw.

I would like to immediately convey a special greeting to the designer of AvtoVAZ, who came up with this arrangement of this block. In my opinion, I can't think of a worse place. See for yourself.

If your interior heater (radiator) leaks, the antifreeze will go straight to the control unit, causing almost 100% failure. Even though the Lada Granta is initially equipped with a good quality imported Visteon radiator.
As you correctly noted, water can get in from under the hood.
The rubber plugs on the Lada Granta are not of very good quality, so when they dry out, water will flow onto the controller. To prevent this from happening, check the condition of the rubber plug. Water enters the controller through this plug.
If the drainage hole (which is shown in the video below) becomes clogged, water may flow into the cabin.

There are two ways out of the situation, or rather three.

Leave everything as it is and hope for chance.
Place the plug tightly onto the sealant.
The most labor-intensive is moving the controller higher, closer to the passenger airbag, with the contacts facing down.
Can be attached to the air duct

Where is the ECU located?

In the cabin, the unit can be found under the panel. In models from AvtoVAZ it is located near the heater radiator. On business-level foreign cars, the ECU can be found under the rear seat. Some manufacturers try to install the controller in the trunk. Placing the ECU under the hood is not the best solution.

After all, the block is affected by rain, snow and other factors. Often in the engine compartment this device can be found near the battery or under the safety block. It’s not difficult to find – even an ordinary car owner without special skills can find it. You just need to disassemble the dashboard a little or find the unit under the hood. Externally, it is a box from which two wire harnesses extend. But you shouldn’t repair the ECU yourself without special knowledge. It is better to entrust this work to professionals.

How to find out which ECU is installed on the Lada Granta

Sometimes the Lada Granta model is identified with an exclusive car. Why is she given such status? It's simple. "Lada" has a unique control unit, which is called "Itelma 11186-1411020-22" and cannot be combined with previous modifications of "VAZ".

The primary difference of this module is the integrated “CAN bus”. Previously produced models used the “K-channel” to ensure the transmission of pulses. If you set out to experiment and replace the Itelma with a similar device with functionality in the K-channel, then in the end the devices on the panel will certainly “fall asleep”.

ECU Itelma

It is based on a special type of algorithm, the formation of which occurs on the basis of software pre-integrated into memory. This allows the module to process signals from all sensors present in the ECM in real time.

The process associated with processing streaming information allows the control unit to subsequently carry out corrective actions regarding the functioning of such systems:

1. injectors;

2. ignition system coils;

3. throttle mechanism;

4. sensor-regulator of idle modes, etc.

To be able to identify the type of device in a LADA Granta car and the firmware version of its software, a special marking code is applied to the body, which allows for the correct selection of an analogue if there is a need for replacement, and in some cases pinout of the ECU is required.

What types of ECUs are available to Granta and what is the principle of their operation?

Sometimes the Lada Granta model is identified with an exclusive car. Why is she given such status? It's simple. "Lada" has a unique control unit, which is called "Itelma 11186-1411020-22" and cannot be combined with previous modifications of "VAZ". The primary difference of this module is the integrated “CAN bus”. Previously produced models used the “K-channel” to ensure the transmission of pulses. If you set out to experiment and replace the Itelma with a similar device with functionality in the K-channel, then in the end the devices on the panel will certainly “fall asleep”.

Where is the ECU located and what is its operating principle? It is based on a special type of algorithm, the formation of which occurs on the basis of software pre-integrated into memory. This allows the module to process signals from all sensors present in the ECM in real time.

The process associated with processing streaming information allows the control unit to subsequently carry out corrective actions regarding the functioning of such systems:

nozzles;
ignition system coils;
throttle mechanism;
sensor-regulator of idle modes, etc.

Main controlled parameters.

To ensure the functioning of vehicle components and assemblies, the control unit collects and processes signals from the following sensors:

Temperatures - engine, fluid in the cooling system, environment;
Air flow and fuel supply;
Idle mode;
Vehicle position on the lane, anti-wear, ABS and other safety systems;
Speed, engine speed, position of the crankshaft and camshafts;
Throttle valve tilt and gas pedal position;
Fluid pressure in the brake system;
Interior climate and air conditioning sensors;
Power steering or electric power steering;
Voltage in the vehicle's on-board network.

The set of signals processed depends on the model and modification of the car (for example, for SUVs with air suspension, monitoring of its condition is required). In the most prestigious brands and configurations, the number of interrogated sensors is several dozen.

Devices controlled by the ECU:

throttle valve and air supply system elements (for example, turbochargers);
fuel supply system devices (injectors, nozzles, when fuel injection is carried out under electronic control);
valve timing control system;
electronic distributors of the ignition system;
cooling system fan;
solenoids and valves for gear shifting in automatic and robotic transmissions;
differential locking clutches;
stove, air conditioner and other climate control devices;
head light, interior lighting;
window regulators;
elements of electrical equipment of a car.

Like the number of sensors, the set of controlled actuators depends on the make, model, configuration, and options of the vehicle. In business or premium class cars, the number of control commands can exceed the set typical for budget cars by an order of magnitude.

Example of a device diagram:

How to remove the Lada Granta ECU step by step instructions

In order to remove the Lada Granta ECU, you will need to perform the following procedure:

De-energize the system by removing the terminals from the car battery
The ECU controller is located under the glove compartment under the passenger's feet and hidden under the upholstery. The upholstery is attached to the body on the right with a self-tapping screw. We unscrew this screw.
Next, we move the sheathing away from the floor with our hands as shown in the figure.
Now we bend the soundproofing material to the side
After unscrewing the nuts, we move the ECU away from the body.
Now we squeeze the clamp of the wire harness fastening bracket and fold back the bracket.
We disconnect the connector from the block and similarly disconnect the second harness with wires, after which we remove the ECU from the car. Make the necessary repairs, then install in the reverse order.

Using the connector

The main options for using OBD-2 in the Lada Granta include:

connecting a scanner to check the machine and deal with errors;
installation/connection of an on-board computer, for example, Multitronics or State.

Connecting an on-board computer to a Lada Granta car will have a useful effect, because in this way it will be possible to:

monitor the engine temperature;
receive error codes as soon as they occur;
forcefully start the cooling fan.

Reasons for flashing the ECU

Incorrect operation of the system can be eliminated by flashing it

Granta is equipped with an M74 controller 11186-1411020-12. Its functionality is significantly different from what was installed on cars previously. Firmware methods that could be used on other ECUs do not work here.

The car, configured at the factory, meets the requirements of car enthusiasts and Grant owners. However, some still flash the system. And there are several reasons for this:

The 8-valve Granta does not hold speed when the air conditioning is on;
there are difficulties in starting a cold engine;
temperature conditions are incorrectly determined;
stopping the engine;
lack of dynamics;
increased fuel consumption.

A Lada Granta with an automatic transmission may experience various kinds of difficulties when choosing the required gear already at medium speeds. Granta constantly wants to drive at lower speeds. In city mode with small traffic flows this is not critical, but when driving on the highway and in a dense flow of cars there may be problems when maneuvering.

Some motorists complain about the impossibility of smooth transitions and weak traction if the engine operates at low speeds. There is an opinion here that the controller was initially flawed, namely, the parametric characteristics were not calculated at the factory. Only firmware will help solve this situation.

We flash the Itelma M74 (Lada Granta) ECU with our own hands

The M7.4 ECU is very easy to program; the contacts to enable programming “B2 and A4” are placed in the first connector; it does not need to be disassembled. You can even change it without removing it from the manina via the OVD-2 connector, but before that you need to apply +12v to these two contacts “B2 and A4” and turn on the ignition.

In order to independently flash the Itelma M74 ECU, which, as we already know, is installed on the Lada Grant, you need to perform the following procedure:

Disconnect the battery mass.
Remove the ECU block. The connectors are disconnected like this:
Let’s make a “spider” like this (I recommend signing the wires)
We connect the connectors: Connector 1 (large) J1 - switchable voltage (K15) (12V) - second switch B2 - programming permission (12V) - first switch A4 - programming permission (12V) - first switch Connector 2 (Small) F2 - switchable voltage (K15) (12V) - second switch D2 - K-Line
here's EL. diagram (many people write that they are flashing, but there is no diagram anywhere)

6. It is not recommended to apply voltage to all wires at the same time! It is necessary step by step through a double switch.

7. 4-And so the whole circuit is assembled and the KKL VAG-COM cord is inserted into the USB PC. Here is the voltage supply sequence

Apply voltage (+12 V) to H1; H2 (throw the hooks onto the battery)
Turn on the first switch (programming permission) B2 A4
We launch the WinFlashECU program (-Select M74, -select the port number on which KKL VAG-COM hangs -it’s better to set the speed to the minimum)
Next, turn on the second switch (which is on the “switch-off voltage”) F2 J1
Communication with the ECU should appear (this is an indicator that the circuit is assembled correctly)
Then we save copies of your “firmware and immo” on your computer, click
Reading EEPROM and Reading ECU just in case (at the same time we check how everything works)
code copying finished
click ECU programming, look for the required firmware on your computer and download

Attention ! A window may pop up stating that this software is not for this ECU, but click “OK” anyway

We are waiting for the download to finish (it took me 4 minutes to load) when the window pops up: the operation has been completed successfully.
Close WinFlashECU.
Turn off the power.
And only then disconnect the wires.

Re-flashing process

The M 74 CAN module in the Lada Granta is located in front, opposite the passenger seat. To flash the firmware it must be removed. First, you should bend the trim and sound insulation of the interior and unscrew the 3 bolts. Now you need to disconnect the wires. This can be done by squeezing the clamp of the bracket; the connector will easily come out of its place. Of course, this work should be done with the negative terminal disconnected. The ECU has been removed, you can proceed to programming it.

In addition to the available adapter, program with an additional module and firmware, you will need a 12 V power supply, or even better, a battery. Next comes the most important part of the work. You need to connect the connectors of the adapter and the ECU with wires. You will need any 2 switches. With their help, + 12 V will be supplied to the required contacts when necessary. The connection is made in the following order:

connector 1 (large);
J1 - switch 1, switchable voltage (K15);
B2 - switch 2, programming permission (12V);
A4 - switch 2, programming permission (12V);
E2 -CAN-L;
E3 -CAN-H;
K1 - 510 Ohm jumper on E3;
connector 2 (small);
G2;G3;G4 — mass;
H1;H2 - non-switchable voltage (K30);
F2 - switchable voltage (K15);
D2 - K-Line.

The letters and number on the left side of this column are contacts on the ECU connectors. In brackets are the adapter contacts. Once everything is connected, check again carefully. If everything is fine, you can proceed to uploading the firmware. Turn on the program. Make the necessary settings. After this, press switch 2 and start the reading program.

This is necessary in order to save the factory firmware just in case. As soon as the process is finished, click “Record”, select the firmware and upload it. The process lasts 5-8 minutes, after which a message about successful loading is displayed.

https://youtube.com/watch?v=gJfpAd-R7js

Itelma ECU 11186-1411020-22: stock firmware or chip tuning?

The dilemma regarding the need to flash a manufacturer-installed or a new ECU installed by the car owner depends on many factors. Among the main points is the “thoughtfulness” of the car at the time of overtaking or moving in a dense stream of cars.

It is worth noting the optimized dynamic firmware for Lada Granta 1.6L, 8V with an M74 controller and an established E2 toxicity standard. What does the practical implementation of such firmware provide?

As a result of the manipulations carried out and the return of the controller to its rightful place, fuel supply and ignition were significantly optimized. The firmware provides for changing the throttle settings.

Carrying out modern chip tuning on a domestic Lada Granta car provides the opportunity to physically disable the 2nd DC and the catalyst. As a result of such firmware, the dynamic characteristics of the car significantly increase while maintaining a moderate driving style.

The stock firmware of the Lada Granta ECU is designed for ordinary daily use of the car, while the manufacturer's firmware version is included in the warranty package. Unauthorized changes to the firmware version will void the manufacturer's warranty.

At the moment, the end user is provided with commercial firmware for M74 controllers, namely:

• AY_I484GG30 – Lada Granta 1.6l, 8V with pre-installed M74 controller 11186-1411020-22;

• I484GI06-STR – Lada Granta 1.6L, 8V; controller – 11186-1411020-22 and Euro-2 standard;

• AY_484GP12 – with preinstalled M74 controller 11186-1411020-22 and E3/E2 standards.

“Itelma 11186-1411020-222”: from stock firmware to chip tuning?

The dilemma associated with the rationality of performing firmware on the “native” software in the ECU excites the minds of many owners.

Here it is worth highlighting the optimized dynamic firmware version for the 1.6-liter 8-valve Lada Granta, which has the “M74” module and meets the toxicity standard according to “E2”.

What preferences does this firmware have? After performing a certain list of manipulations and returning the ECU to its rightful place, optimization of the parameters of fuel supply and ignition distribution is observed. Also, one of the purposes of the firmware is to ensure that the settings of the throttle assembly are adjusted.

Chip tuning allows you to physically disable the 2nd DC (“lambda”) in combination with the catalyst. The implementation of such firmware leads to an increase in the dynamic capabilities of LADA Granta.

The role of the stock firmware is to form the parameters characteristic of normal driving conditions. Let us remind you that the “native” version of the firmware is included in the warranty package. Self-correction of the firmware version without any alternative leads to the cancellation of warranty coverage.

Timing belt Lada Granta 8 valves

Today, so-called commercial versions of firmware software are available to the mass consumer, including the following:

“AY_I484GG30”, the product is intended for the 1.6-liter 8-valve Granta modification with the present control module “M74 11186-1411020-22”;
“I484GI06-STR”, software is offered for Grant with similar motors and blocks in version “11186-1411020-22”, plus compliance with the Euro-2 standard;
“AY_484GP12”, the firmware is used with controller versions “M74 11186-1411020-22” and motors that comply with “E3/E2” regulations.

What can be optimized in the power units of the Lada Granta

The plant sometimes releases new firmware and makes adjustments to the operation of the Unified Control System at warranty stations. But not everyone's car is under warranty, and not everyone who is under warranty receives this adjustment.

Many people continue to drive unfinished cars, not even suspecting that all their problems can be easily solved. You just need to make small changes that will optimize the operation of the engine and transmission components.

The Granta firmware allows you to solve the problem with the ignition timing, change the injection time, modify the exhaust gas toxicity control system, make changes to the algorithms that allow you to determine the octane number of gasoline, and optimize the operation of the automatic transmission.

What modes are optimized when chip tuning a Granta power plant?

The plant periodically makes some warranty adjustments at service stations, but not everyone uses this service, and those who undergo warranty maintenance do not always receive it. As a result, owners continue to operate obviously faulty cars, not suspecting that it is enough to correct the electronic algorithm. The point of changing the ECM software is to optimize the operation of the engine and transmission.

Lada Granta modes that require improvement:

ignition timing;
injection time value;
exhaust emission control systems;
algorithm for determining the octane number of fuel;
automatic transmission operation.

If desired, the second oxygen sensor can be removed from the circuit to further remove the catalyst.

What to expect from ECU tuning

Reflashing allows you to correct errors and optimize vehicle performance

Companies offering chip tuning services develop and offer various software that allows you to optimize the basic performance of cars.

This process allows you to correct all sorts of errors, create a backup copy of the initial settings, study and adjust characteristics, as well as make changes and test new firmware of electronic components.

If you need to return to default settings, this is done almost instantly. But those who have already reflashed Granta will never return to the standard factory settings. After flashing you can get:

reduction in fuel consumption by 5%;
high speed characteristics;
10% increase in power;
smooth operation of the automatic transmission;
improved traction.

And that's not all. In this case, not a single intervention is made in the mechanics. This is one of the cheapest ways to make Granta better. There is one caveat. If the car is currently under warranty, after flashing the ECU, the warranty is invalid.

Modern chip tuning specialists offer 3 different firmware options for the Lada Granta controller. Of course, there are more of them, but not all are ideal. Particularly popular systems are “Paulus”, “Icebreaker” and “Adakt”. They are the most tested and tested.

Some experts suggest installing one of the control programs, or all three. Sometimes they offer to try each one and then choose the one you like best. The actual firmware installation takes about 30 minutes on average.

Methods for diagnosing ECUs and errors on Lada Granta via OBD2

Using the dashboard (on-board computer). The process is described in the car's operating instructions.

Basic functions of the device

On-board vehicles for the Lada Granta have high information memory and a small monitor, except for the “State” model, which only has a digital display. This makes it easier for people with poor eyesight and those who are unfamiliar with the nuances of engine operation to monitor all the processes that accompany its stable operation. BC will help the car owner by pointing out the following parameters:

total travel time;
detailed fuel consumption at different speeds;
average speed indicators and excessive fuel consumption;
remaining fuel in the gas tank;
speed of start of movement;
engine temperature;
malfunctions of components and mechanisms;
temperature inside and outside the car;
on-board network voltage;
crankshaft rotation speed (engine speed).

The on-board computer has a volatile memory and the ability to control the anti-theft system - the Lada Granta immobilizer. The on-board vehicle has a built-in supervisor, a fault indicator, and a “afterburner” function - the ability to reset the memory after starting the engine.

Some on-board drivers can additionally control lighting, stove operation, clock, calendar and alarm clock, and automatic window closers. You can plan your trip route based on the BC readings. It also allows you to use various navigation installation options and can warn you about low fuel levels or exceeding the permissible speed limit.

Most devices allow you to independently diagnose the operation of different car systems. The device can read ECU error codes without using any equipment. The explanation is presented in the accompanying documentation for each device. Such functionality will allow you not only to save on a trip to a specialized center, but also to identify problems, preventing serious malfunctions from occurring.

Instructions for diagnosing the Lada Granta via OBD2 connector with your own hands via a laptop or smartphone

1 step

Determine where the OBD2 connector is located

You can study this issue in the article: “Location of the diagnostic connector on the Lada Granta“

1 step

Step 2

Determine which scanner is suitable for your car

The selection of a scanner (adapter) for LADA GRANTA depends on the ECU model, as well as the needs of the diagnostician / car owner.

To select diagnostic equipment, use the calculator: “Selecting a scanner for the Lada Granta“

Read the detailed material “Car scanners for diagnosing VAZ and LADA cars“

Step 3

Download the diagnostic program for the scanner

The diagnostic adapter requires software that can be installed on a laptop or smartphone/tablet. Auto scanners with their own software shell and display do not require software.

To select a program for the adapter, go to the section: “Programs“

Step 3

Step 4

Use the instructions and carry out diagnostics

When you purchase an adapter, instructions are included with the adapter. More detailed instructions on diagnostic car scanners and descriptions of their operation are posted in the section: “Reviews of OBD2 car scanners“

Read the article guide “Car scanners for diagnosing VAZ-LADA cars with instructions“

Step 5

Identify errors and decipher them

Error codes and their interpretation are displayed in the scanner program interface. You can also study the complete database of errors for your car in the section: “OBD2 error codes for Lada Granta“

Step 5

Step 6

Make repairs according to the error code

The unit is repaired according to the decoding of the error (problem) or contact a car service to eliminate a particular malfunction.

Step 7

Check errors again

After auto repair, you need to re-check the car for errors using an adapter (scanner). Erase errors if necessary.

Step 7

Scan Tool Pro - budget multiscanner for LADA GRANTA

A good choice for a novice diagnostician

Nowadays there are scanner models with different versions of firmware and chips on sale. Scan Tool Pro with firmware 2022 is the most stable version so far, and also has maximum compatibility with cars manufactured since 2001, including LADA and VAZ.

By following the link on the right you can get acquainted with the scanner for autodiagnostics “Scan Tool Pro”. This is an official dealer website that provides a 12 month warranty.

Happy diagnostics!

Engine diagnostics

The capabilities of engine diagnostics via the OBD2 connector depend on the scanner and software. For example, a simple amateur adapter ELM327, together with the OpenDiag application on a smartphone, allows you to read engine errors and decipher them, as well as view temperature sensors and engine speed, both at idle and while driving in real time.

We provide documentation for engines with electronically controlled throttle valves that meet toxicity standards. Read the files by running engine diagnostics.

EURO-4 (controller M74) (.PDF)

EURO-4 (controller M74 16 VALVE) (.PDF)

Instructions and diagnostics of EMUR

Instructions and diagnostics of ABS

ABS diagnostics via OBD2 connector

If problems arise with the ABS, before changing or manually diagnosing the problem, read the errors according to the instructions provided. Checking for errors will show you not only the condition of the sensors, but also the wires and connectors.

Diagnostics of mass air flow sensor

Using the Open Diag program, we record the voltage at the mass air flow sensor. The permissible voltage values are:

if the sensor is in good condition, the voltage is from 1.01 to 1.02 V;
in satisfactory condition - from 1.02 to 1.03 V;
a value ranging from 1.04 to 1.05 indicates a near-death state

Important: If it exceeds 1.05 V, the mass air flow sensor requires replacement!

Diagnostics of the oxygen sensor (lambda probe)

The oxygen sensor is checked using the Open Diag program and an adapter connected to the OBDII connector. We analyze the voltage values at the sensor.

When the engine is running, the voltage should change from 0.008 to 0.7V and back. There should be no smooth declines or freezes on the oscilloscope.

Automatic transmission diagnostics

Diagnostics of the gearbox is also possible, but limited by the Granta ECU itself. Yes, you can use professional, expensive car scanners, but we are talking about self-checking.

Using an adapter and an application on a smartphone, you can see errors in the transmission; if there are any, their decoding will indicate one or another malfunction of the box. Also, in real time, data from temperature sensors is taken from the box.

Automatic transmission errors:

P0720 “Output shaft speed sensor is faulty” P0717 “Turbine speed sensor” P0706 “Automatic transmission selector. No signal" P0705 "Automatic transmission selector. Several signals at the same time" P0974 "On-off solenoid. Open circuit" P0973 "On-off solenoid. Circuit shorted to ground" P0963 "Pressure control solenoid. Open circuit" P0962 "Pressure control solenoid. Circuit shorted to ground" P0740 "LOCK UP SOL(Open)" P0743 "LOCK UP SOL(GND short)" P17AB "L/C SOL(Open)" P17AA "L/C SOL(GND short)" P17AE "2-4 /B SOL(Open)" P17AD "2-4/B SOL(GND short)" P17B1 "H/C&L&R/B SOL(Open)" P17B0 "H/C&L&R/B SOL(GND short)" P1735 "INTER LOCK FUNCTION (1st)" P1736 "INTER LOCK FUNCTION(2nd)" P1737 "INTER LOCK FUNCTION(3rd)" P1738 "INTER LOCK FUNCTION(4th)" P0744 "LU CLUTCH(Lock-up)" P1744 "LU CLUTCH(Slip Lock-up) )" P0731 "Incorrect automatic transmission ratio in 1st gear" P0732 "Incorrect automatic transmission ratio in 2nd gear" P0733 "Incorrect automatic transmission ratio in 3rd gear" P0734 "Incorrect automatic transmission ratio in 4th gear" P17A1 "NEUTRAL FUNCTION(1st)" P17A2 "NEUTRAL FUNCTION(2nd)" P17A3 "NEUTRAL FUNCTION(3rd)" P17A4 "NEUTRAL FUNCTION(4th)" P17A0 "NEUTRAL FUNCTION(Rev)" P0712 "Oil temperature sensor, low reading" P0713 "Oil temperature sensor, high reading" P0711 “Oil temperature sensor, frozen” P0863 “CAN bus connection (initialization)” P062F “BACKUP MEMORY” P1701 “Controller supply voltage”

Sources

https://1LadaGranta.ru/obsluzhivanie/proshivka-prichiny-osobennosti.html
https://inomarki-remont.ru/ebu-lada-granta.html
https://carfrance.ru/gde-naxoditsya-i-ustanovleno-ebu-lada-granta/
https://Vaz-Lada-Granta.com/elektrika-tormoza/ebu.html
https://la-granta.ru/lada-granta-ebu.html
https://elm327-obd2.ru/diagnostika/lada-granta.html

Electric power steering

When the EPS diagnostic light comes on or the electric power steering switches on/off after a certain period of time, you first need to check the EPS using the diagnostic connector. Open Diag (application) together with an OBD-2 adapter or scanners will help here:

The diagnostic process is designed to indicate where errors are located and decipher them for further repair based on the type of malfunction. In addition, it is quite possible to perform the check without a scanner:

There is an 8-pin connector (black) under the ignition switch under the steering wheel. It is necessary to dismantle the casing at the steering column (unscrew the fastening screws from below).
Insert the paper clip, closing the two contacts.
Turn on the ignition and observe the warning lamp.
The first signal will be the continuous burning of the lamp (“1”).
It is necessary to count subsequent short signals, that is, if there are 3 short ones, then “3”.
In our case, the code “13” should be formed.