Engine management system Lada Granta (VAZ 2190)

Lada Granta first rolled off the assembly line in 2011. This car immediately took a leading position among cars in its class. Car enthusiasts were attracted by a good range of available options and the ability to choose a power unit. Car enthusiasts were given the opportunity to choose a transmission. You could choose to purchase the Grant with a manual 5-speed gearbox or with a Japanese automatic transmission.

Fuel was supplied to the Lada Granta through a line consisting of one pipe. The feed itself, like many things in this car, was controlled by an electronic control system. The electronic part, or computer, the ECU, received and processed data from various sensors, and then issued commands to the engine and other systems. Firmware for Lada Granta is a procedure for making changes to the operation of the main components of the car. This is nothing more than chip tuning.

Lada Granta - ECU

Lada Granta is one of the few domestic cars that has an electronic control unit.

The practicality and rationality of such an innovation, namely the integration of the M74CAN ECU into the vehicle system, is noted by a number of positive factors, which, in turn, are noted by the owners of the Lada Grant.

It is also worth noting a noticeable drawback, which lies not in the device itself, but in poor sealing of the ECU. As a result of water entering the device, the microcircuit burns out, which leads to unstable engine operation, and the Lada Granta ECU requires replacement.

The only solution is to replace the ECU itself, which, in turn, is located opposite the front passenger seat, or rather under the glove compartment, layers of trim and sound insulation of the floor.

Phone chip tuning in Tolyatti 89631161168

What is chip tuning ? Updates in software for a car engine! Any electronic control unit M74 engine ECU contains a program for its operation. A set of correction characteristics for various engine operating modes is stored in the computer’s memory. The control unit, receiving signals from various sensors, controls the operation of actuators to ensure optimal (according to the developers) engine operation. The necessary parameters for controlling actuators are calculated in accordance with incoming data and a set of correction coefficients stored in the computer's memory. Thus, wanting to change the operation of the engine without altering its mechanical components, we have two obvious ways for this: The first is changing the incoming signals (for example, changing the stiffness of the air flow meter damper return spring). The second is the change by the ECU firmware of the correction coefficients in the memory of the stoichiometric characteristics of the engines components in the program sum and thus we do chip tuning of the engine .
All the firmware that we have in Togliatti is made by branded specialists!

We did chip tuning for the 2021 Lada Granta FL, 16.16 valve engine, with powerful firmware from Space Pro

What ECU is on the Grant? Operating principle

Lada Granta is a truly exclusive car from a domestic manufacturer. What exactly is exclusive? This car received an electronic control unit, namely Itelma 11186-1411020-22, which is not compatible with previous VAZ models.

The main difference is the integration of the CAN bus. In previous versions of cars, for example, Lada Kalina, a K-channel is installed to transmit data to the instrument cluster.

Based on the main difference between the Itelma 11186-1411020-22 ECU and the ECU of previous models, we can draw a conclusion regarding the installation of an ECU with a K-channel on the Lada Granta. As a result of such an experiment, both in practice and in theory, the car’s instruments will “fall asleep.”

What about the operating principle? This principle is based on an algorithm of a certain type, which, in turn, is formed on the basis of software previously added to the device. Granta ECU receives and processes information from almost all ECM sensors.

Data processing according to the conditions of the above algorithm makes it possible for the Grant 11186-1411020-22 ECU to control the following devices, namely:

• Electronic throttle;

• Idle speed regulator, etc.

To determine the type and version of the firmware, appropriate markings are applied to the ECU housing, which, in turn, is necessary when replacing the electronic engine control unit.

Main types of faults

So, as you can see, there are more than enough places for potential breakdowns. In case of errors, the “check engine” indicator will light up on the instrument panel screen.

This is what the engine warning light icon looks like

All engine modifications of the Lada Granta are controlled by an electronic control system.

Problems with the fuel pump

Location of the fuel pump in Grant (I apologize for the dirty interior, there were rogue kids driving before the shooting)

In this component, two parameters must be monitored, among which the operating pressure, as well as performance during operation, stand out. In most cases, the problem can be resolved through repair work rather than completely replacing the part.

First, you need to check the voltage at the connector that supplies power to the gasoline pump. This comes from the on-board energy system. If possible, this value should be 12 V or even slightly higher. In addition, during operation, slight noise during operation of the pump is considered normal.

The difficulty with this testing method lies in the fact that it can be very difficult to detect an unreliable contact in an electrical circuit on the way to the connector.

If we talk about control relays, then they are all located inside the car. And, if they do not work correctly, they can give themselves away with characteristic clicks. But, this malfunction is quite easy to fix, since replacing the relay is accompanied by monitoring the symbols, which will tell you where and what component needs to be mounted.

Access to the mounting block opens after the decorative panel opens

The relay and fuse mounting block are located under the steering wheel, to the left of the car headlight mode switch

Fuse box and relay boxes

Problems associated with starting the Lada Granta engine

Naturally, many other problems are possible that are directly or indirectly related to its management system. These include wear on the injection elements of the fuel pump. Problems may also relate to the fuel supply process, as we already discussed in the previous section.

Main article: why the engine of a Lada Granta car does not start.

Clogged or faulty engine injectors

Injectors with ramp

As you move, gasoline reaches the injectors (sprayers), which may not work well enough due to the way the system is configured. Next comes the problem with the pressure at which the mixture is injected into the cylinder. If it is not high enough, then there is a significant chance that the car will not even be able to start working.

Bad fuel

AvtoVAZ recommends using only 95-grade gasoline, otherwise the engine management system may become unstable.

This does not apply to the fuel management system, but we will give you useful advice.

In severe negative temperatures, try to keep the fuel level in the gas tank at least 25% of its volume. That is, if a Lada Granta car has a gas tank volume of 50 liters, then you need at least 12.4 liters. This amount of fuel will prevent condensation from forming and mixing with gasoline.

If low-quality fuel is poured, the engine may begin to operate unstably, stall and stall at idle, and the vehicle’s fuel consumption will also increase.

Due to poor fuel quality, you will have to clean the gas tank, or completely drain the old low-quality gasoline and fill in new one.

Failures accompanied by increased noise of the power unit

Improper operation of the engine management system can lead to other problems. Most of them have one common symptom - increased engine noise.

This is possible when there are solid particles (dirt) in the fuel supply system, which prevent the injectors from working correctly. In addition, it is possible that air may enter the power system. The same applies to uneven operation of the power unit at idle. Of course, this is not the original cause, but the sources should be looked for in the motor control system.

Idle speed

Idle speed too high

If the idle speed is set incorrectly, or if it is adjusted automatically based on false readings from the sensors, this can also lead to an increase in the noise level in the engine. You need to look for the cause in the system settings or mechanical damage.

Injectors, fuel system and fuel pump

The fuel pump can be weird

Next comes a problem with the fuel supply and injectors. As we mentioned above, this can cause a complete failure of the system, with the inability to even start the engine.

Considering the quality of fuel in our country, the fuel filter often becomes clogged. In this case, the fuel filter will require replacement.

Problems regarding the Lada Granta crankshaft

Code P0335 - incorrect signal from the crankshaft position sensor.

If we are guided by the fact that in the Lada Granta there may be a problem with the normal operation of the crankshaft, then in this case it is worth turning to the engine management system. In particular, there are some basic problems that we will now talk about.

The first reason will be physical wear of the crankshaft position sensor. The system will not be able to adjust this parameter, so it will try to adjust other parameters, resulting in some problems.

The system can report problems even when you notice excessive resistance to the movement of elements during adjustment processes. And, of course, do not forget about the possibility that there are too many gases in the crankcase, creating increased pressure.

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.

How to reset an error on Grant

In the Lada Granta, the check error “pops up” relatively often. This is caused by the presence of a large number of auxiliary equipment and electronic modules in the engine compartment.

Partial error reset on a car can be done mechanically:

If everything is done correctly, the errors will be cleared. The method is not suitable for complex failures - some errors cannot be canceled this way.

To completely remove codes from the on-board computer’s memory, it is performed using special diagnostic equipment. Devices must be purchased separately in case of constant need. Purchasing a scanner to service one car is not economically feasible.

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.

Decoding: Lada Granta errors

The list of possible faults is long. So we've broken it down into three parts based on the original issues. These are the error codes that it produces:

• Electronic control unit ( ECU );
• automatic transmission ;
• Problem with EEPROM .

Grant ECU: error codes

The largest group of faults . This includes data on internal combustion engine sensors. Code numbering from P0030 to P2501.

P0030-P0172

P0200-P0363

P0422-P0660

P0661-P1388

Р1389-Р1689

R2070-R2501

Complete list of Grant automatic transmission errors

The complete table of faults with the VAZ2190 automatic transmission is much smaller than the previous one. The whole list is below:

All automatic transmission error codes fit into one block

VAZ 2190 data transmission error codes

The smallest group of codes. There are only six of them, all starting with U - automatic transmission and internal combustion engine faults are indicated by the letter P.

All known data transfer errors on Grant

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:

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.

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:

1. De-energize the system by removing the terminals from the car battery
2. 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.
3. Next, we move the sheathing away from the floor with our hands as shown in the figure.
4. Now we bend the soundproofing material to the side
5. After unscrewing the nuts, we move the ECU away from the body.

6. Now we squeeze the clamp of the wire harness fastening bracket and fold back the bracket.

7. 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.

Step-by-step instructions for removing the brains of a Lada Granta - video

How to dismantle the ECU?

It’s easy to remove the controller with your own hands:

• Operations are performed to provide access to the device, for example, partial dismantling of the center console or disassembling the instrument panel.
• The negative terminal of the battery must be removed to avoid emergency situations with the connected unit.
• The fixing latches or clamps on the sensors, actuators and power cables are removed.
• The connectors are disconnected.
• The fixing bolts are unscrewed and the ECU is removed.

The decision to repair or replace is made based on diagnostics. In any case, failure entails significant costs - the cost of units for domestic cars is in the range of 10-20 thousand rubles, for foreign cars 14-50 thousand rubles. (depending on the class of car). Repairs will cost 40 - 50% of the indicated amounts.

Video with instructions for replacing the ECU unit on VAZ models.

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:

1. Disconnect the battery mass.
2. Remove the ECU block. The connectors are disconnected like this:

3. Let’s make a “spider” like this (I recommend signing the wires)

4. 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) G2;G3; G4 - Ground (can be connected to any) H1; H2 - non-switchable voltage (K30) F2 - switchable voltage (K15) (12V) - second switch D2 - K-Line

5. here's EL. diagram (many people write that they are flashing, but there is no diagram anywhere)

ECU of the Lada Granta car - software guarding safety

The control unit, or controller, is a kind of “brain center” of any car equipped with various electronics. It receives signals from sensors that are equipped with all important parts of the car, from the fuel system to the wheels. Data processing then occurs to allow the ECU to effectively control the engine and ensure safe operation. It is in controller malfunctions that the greatest danger for the driver lies, because an error in quantitative indicators, a malfunction in the fuel supply system, or even a violation of climate control can lead to a threat to life and health.

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.

Smooth operation of the vehicle is guaranteed by the control unit

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.

What kind of computers are installed on the grant?

Less than a week has passed since I picked up the “working” Grant from the service.

. and the car broke down again, completely. Those. turned into "real estate".

After the penultimate repair, when the speed sensor on the manual transmission was replaced, Grant began to glitch a little - turning off while driving. Moreover, from my point of view, this is “a little”, because in more than 3 years of driving VAZs I had the opportunity to be in a wide variety of situations. And here. Well, the engine turned off on the highway at a speed of about 100, well, I turned the key to “off”, squeezed the clutch, turned the key to “on”, released the clutch, the engine started, and we drove on.

Do you think it was worth sounding the alarm and going to the service station? No, friends, this idea made no sense, because without reproducing the problem, nothing can be fixed. And it’s simply unrealistic to recreate a breakdown with a guarantee, because the car stalled only after a couple of tens of kilometers of driving along the highway and not every day. Moreover, Granta literally “yesterday” returned from the service station with the verdict “everything is fine, keep riding.” Well, I rode around expecting that it would either “go away on its own” or “break completely.” The check engine, by the way, only came on once, but then immediately went out.

Diagnostics of the ECU ECM Lada Granta

As it turned out, Granta is now diagnosed exclusively via the CAN bus. The controller in this car is M74 CAN. The OBD connector doesn't even have pin 7 to connect K-Line. Accordingly, Grant will not be able to diagnose the K-Line adapter and programs for it. The ELM adapter can work with the CAN bus. Fortunately, in the garage, in addition to K-Line, there is also ELM 327 and there is a certain number of programs for both K-line and ELM. But there is also an ambush with ELM - the OpenDiag Free program works with the ELM adapter, but only via K-Line, with the CAN bus it works only in the commercial version, the price tag for the version is 4,500 rubles. Considering that ECU diagnostics cost an average of 500 rubles in the city, I somehow didn’t dare to shell out that much money for a commercial program yet, especially since the on-board computer was installed with “additions.” I’ve actually never used it for diagnostics, but apparently I’ll have to master it. The ScanMaster program can also work with the ELM adapter and CAN bus. The program is muddy - there are many places on the Internet lying around in the public domain, both with cracks and cracks. I seem to have found the latest version - 2.1 ELM. Started using it.

Diagnostics of Lada Granta using ScanMaster.

ScanMaster ELM 2.1 sees the adapter, but refuses to see the controller.

ScanMaster started working and I saw the controller. In the program settings you need to select “USB (FTDI driver)”, provided that the adapter is connected via USB. If the adapter is Bluetooth, select the appropriate settings. The program is also interesting. I haven’t figured it out deeply yet, but it sees the VIN, but doesn’t write what the controller is. Why do I need a VIN number? But the model and serial number of the controller would not be out of place. He also doesn’t see the serial number of the controller - he writes some incomprehensible icons. Fun, but stressful.

I haven’t found any other programs for ELM and CAN for Grants yet.

I also tinkered with ScanMaster - the program is only suitable for viewing errors and erasing them. There are only 14 basic parameters that it shows.

Why, one might ask, is the “Mileage with diagnostic lamp on” parameter needed? What useful information can be gleaned from this parameter and what necessary thoughts in car repair may arise based on this parameter? But, at the same time, this program does not even show the injection time, which, in my opinion, is a fairly necessary parameter, not to mention the parameters of the position of the clutch and brake pedal, on which the limit switches are located and give a signal to the controller. Of course, I understand that these limit switches have only two states - on and off, and this state can be checked with a regular tester. But this is no longer convenient. Maybe, of course, the scanmaster will identify the incorrect operation of these limit switches as an error - I don’t know. And these limit switches, judging by the reviews on the Internet, fall apart quite often. Yes, there is a “PID Configuration” tab in this program - there are a lot of necessary and interesting parameters there, but they are all not active. I haven’t found any information yet on how to activate them. By the way, I saw screenshots of other people’s scanmasters online – there are much more activated parameters there than I have. It's a mystery - I don't have a solution yet.

We use the reserves of Lada Granta 2190 by flashing the ECU

The Lada Granta, which first rolled off the assembly line in 2011, instantly became the sales leader in its class.
An affordable price, an attractive set of options and a good selection of power plants – these are the advantages that domestic car enthusiasts appreciate. The option of choosing a transmission is very attractive - a five-speed manual transmission or a four-speed automatic from the Japanese company Jatco. Fuel is supplied through a single-pipe line under the control of an electronic engine control system (ECM), which processes signals coming from sensors. Unlike previous models, the Itelma 11186 module is used here. According to owner reviews, it has somewhat unfinished software that can only be corrected by chip tuning Grants

at the software level.

Engine management system Lada Granta (VAZ 2190)

The engine management system turns the fuel pump on and off, controls the amount of air entering the engine cylinders, injects the required amount of fuel into the intake manifold, controls spark generation at the spark plugs, adjusts the ignition timing, regulates the idle speed of the crankshaft, and controls the electric cooling fan. engine.

Location of engine control system elements in the engine compartment: 1 - installation location of the crankshaft position sensor: 2 - fuel injector of the third cylinder (injectors of other cylinders are not visible in the photo); 3 — throttle assembly; 4 — coolant temperature sensor; 5 - canister purge valve: 6 - mass air flow sensor; 7 — spark plug of the fourth cylinder; 8 — ignition coil and high-voltage wires; 9— spark plug of the third cylinder; 10 — knock sensor; 11 — spark plug of the second cylinder; 12 - spark plug of the first cylinder

The engine control system is electronic, with distributed fuel injection. The system consists of the following elements: • electronic control unit; • sensors: 1) gas pedal position sensor; 2) throttle position sensor (built into the throttle assembly); 3) knock sensor; 4) coolant temperature sensor; 5) mass air flow sensor; 6) vehicle speed sensor; 7) two oxygen concentration sensors; pressure sensor (for vehicles with air conditioning system); • actuators: 1) main relay; 2) fuel pump relay; 3) nozzles; 4) ignition coils; 5) electric throttle drive; 6) cooling system electric fan relay; 7) instrument panel; canister purge valve; • connecting wires; • diagnostic connector block. An anti-theft system (immobilizer) is also integrated into the engine management system.

The main control element of the system is the electronic control unit (ECU), or, as it is often called, a controller with a built-in microprocessor. Essentially, an ECU is a specialized mini-computer in which only one program is installed - engine control, and sensors and actuators form the peripheral equipment of this computer. The unit receives and analyzes sensor signals. Based on the received data, the block calculates control commands and issues them to actuators. The unit has three types of memory*: read-only memory (ROM), random access memory (RAM), and programmable memory (PROM).

ROM is non-volatile memory (that is, information in memory is retained when the power is turned off) and is a microcircuit (“chip”). The ROM stores the calculation program and the data necessary for the calculation (engine parameters, transmission ratios and other characteristics). This information is individual for each car modification.

During operation, the ECU monitors the serviceability of all elements and circuits of the engine control system. Having detected a malfunction, the ECU switches the engine management system to standby mode and turns on the engine malfunction warning lamp on the instrument panel. In this case, the engine will be able to continue operating (except in the case of a malfunction of the crankshaft position sensor, see below), which allows you to get to the repair site under your own power. The ECU records detected fault codes in RAM. Operational information is also stored there, which the ECU microprocessor uses in calculations. When the battery is disconnected from the vehicle's on-board network, all information stored in RAM will be deleted.

The EPROM stores codes for the vehicle's anti-theft system (immobilizer). This type of memory is non-volatile. After activating the immobilizer, the ECU blocks the operation of the engine control system when attempting to start the engine without special electronic keys.

The engine control ECU is located behind the soundproofing cover under the right side of the instrument panel.

The crankshaft position sensor (CPS) is designed to generate signals by which the ECU synchronizes its operation with the engine operating cycles. Therefore, this sensor is often called a synchronization sensor. The operation of the sensor is based on the principle of induction - when the teeth of the crankshaft pulley pass past the sensor core, AC voltage pulses appear in the sensor circuit.

Reasons that require modification of the Lada Granta ECU

As mentioned above, VAZ equipped the new 2190 with an M74 controller 11186-1411020-12. The essence of its functioning is radically different from earlier models, i.e. other blocks and reprogramming methods do not work here. Data transmission is carried out via the CAN bus, which has a higher speed than the K-channel of previous versions.

A car with factory settings generally satisfies many drivers, but some still decide to update the ECM for several reasons:

• the engine does not maintain idle speed when the air conditioner is on;
• difficulty starting a cold engine;
• incorrect temperature conditions;
• engine stop;
• lacks dynamics;
• excess fuel consumption.

A VAZ 2190 with an automatic transmission at medium speeds experiences some difficulties in choosing the appropriate speed - the automatic transmission is constantly trying to switch to a lower gear. For an urban environment with little traffic, this solution is not critical, but on the highway or in heavy traffic it will be problematic to maneuver.

There are also numerous comments regarding the lack of smooth transitions and weak traction at the lowest revs. Experts agree that the factory workers did not finalize the parametric characteristics of the controller a little. From this we can conclude that any self-respecting driver should still make adjustments to the program.

Reasons for flashing the computer

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.

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 the control module software settings

Tuning studios that respect their authority develop individual software designed to maximize the performance of a particular car. In the process of this work, they take a number of actions:

• diagnostics and error correction;
• creating a backup copy of factory settings;
• studying and adjusting characteristics;
• upgrading and testing new ECU firmware.

If the owner wants to return the standard settings, this is done literally before his eyes in a short time. However, usually those who have tried to drive a Grant with chip tuning at least once will never want a car with factory parameters. The answer is simple - the motorist receives:

• reduction in fuel consumption by 5%;
• higher speed characteristics;
• increase in power by 10%;
• smooth gear shifting on automatic transmission;
• increase in traction torque.

And all this, mind you, without any intervention in the mechanical part. This type of tuning is the most budget-friendly and is available to most owners.

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At the end of the 20th century in Europe they began to offer a new option for lovers of power and speed - chip-tuning. This type of modification of the motor did not require intervention in its design, just special firmware was made for the electronic control module of the power plant. Thus it is possible

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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.