Installation of electric power steering (EPS) on Lada Granta in the basic “standard” configuration

Possible malfunctions of the EUR

It happens that after installation the EUR does not work at all or intermittently.

This can be caused by various reasons, among which two most often stand out:

1. Speed ​​sensor failure. The electric power steering operates in connection with the speed sensor. At high speeds, the extra force from the mechanism is reduced to provide you with greater control. If the sensor data stops flowing, the power steering will automatically turn off. The problem is solved by replacing the sensor.
2. Incorrectly installed engine crankcase. If there is a violation in the installation of the engine crankcase (casing), vibrations from the motor will be transmitted to the amplifier. It will begin to hum, and in some cases even turn off.

Operating principle of the EUR

Every time you turn the steering wheel, the torsion shaft twists. Information about this process is transmitted from the torque sensor to the control unit online.

Based on the information received, the electronic control unit (hereinafter referred to as the ECU) accumulates information and reads readings from other sensors. The ECU transmits a signal to the electric motor, which increases the torque of the steering rack shaft by activating the electric motor.

Information is processed so quickly that tenths of seconds pass from the moment of transmission to the moment of reading.

Possible malfunctions of EUR on Lada Grante liftback (sedan)

Steering Features Grants

The Granta steering wheel is a standard rack and pinion type; the drive consists of two steering rods combined into a single structure using ball joints. Theoretically it is not bad, but practice shows otherwise. The tie rod holes are incredibly huge, which is good for air exchange, but bad for pollution. Surprisingly, such practical AvtoVAZ masters somehow did not think about this pressing issue before. To correct this defect, many car owners install simple Lada steering rod plugs.

Most often, Granta steering wheels suffer from loose fasteners. What can be done in this case? You just have to tighten the nuts tighter. You can also note the occurrence of knocking in the steering wheel. To correct the problem, you should tighten the nuts if they are loose, or replace the parts if, upon inspection, you find that they are worn out. If the Lada Granta steering wheel rotates too tightly, you will have to change the bearing. In some cases, it is necessary to repair the suspension strut and lubricate the parts.

Required tools and materials

First of all, you will need the EUR itself. Please note its serial number. The last two digits indicate the type and place of production.

So, 00 is a geared amplifier, produced in Makhachkala and has received complaints from drivers. With the numbers 04 - Korean, installed on Grants and Kalinas, a good amplifier, can be found in stores, but there are few of them on sale. Well, 02 - Kaluga, gearless type, also has good reviews.

To connect, you will need common tools such as screwdrivers, wrenches, and an angle grinder.

Review of manufacturer prices for EUR on the Lalada Grantu

*prices are current as of October 19, 2020.

Recommendations for choosing an electromechanical amplifier

For installation on cars of the Lada Granta family, we are considering modifications from a domestic manufacturer. There is no point in purchasing foreign analogues with a 50% increase in cost.

We buy spare parts exclusively from certified points of sale. The best place is in branded stores from OJSC AvtoVAZ.

We install the electric power steering ourselves. We re-read the article’s recommendations and watch video lessons as needed.

Types of power steering

Hydraulic type power steering design

To make the steering more efficient and comfortable, power steering is used. Mechanisms are divided into three types:

• electric booster;

• hydraulic booster;

• pneumatic amplifier.

Electric power steering operates using electricity and has a rather complex structure. ESD significantly improves the dynamics, maneuverability, and controllability of the vehicle, and in some cases even saves fuel. Electric power steering today is available not only in foreign cars, as it was ten years ago, but even in domestic models such as Lada Kalina and Lada Granta. You can buy it at any auto store in the country.

The principle of operation of power steering is to pump hydraulic fluid. The hydraulic booster has a good ability to soften the shocks that occur on the steering wheel during high-speed driving on a bumpy road. The mechanism also improves maneuverability. The only thing in which it may be inferior to an electric amplifier is that it is not economical, but it is more efficient and reliable. The pneumatic booster is a modern option, still rarely found in cars and especially not found in domestic projects, although you can buy it now in large auto stores.

Removal and installation of electromechanical power steering Lada Granta

Electric power steering reduces steering effort, making driving easier. The basis of the electric booster is a brushless electric motor with a gearbox located under the steering wheel housing. A worm is installed on the engine shaft, which engages with a plastic gear mounted on the steering shaft.

The operation of the electric amplifier is coordinated by an electronic control unit by changing the supply voltage to the electric motor based on information received from vehicle speed sensors, crankshaft speed and the amount of torque on the steering shaft. The electric motor turns the steering column shaft through a gearbox with a certain torque.

The control unit provides sufficient information content of the steering wheel in all modes of vehicle movement. When the car is stationary, the torque on the shaft created by the electric amplifier is maximum; as the vehicle speed increases, the “assistance” of the amplifier decreases and the steering wheel becomes “heavier.” If the electric booster fails, the car retains full controllability, while the steering wheel becomes somewhat “heavier” than on a car without an electric booster. since an additional load appears in the form of a freely rotating electric motor rotor

New Lada: Operation, maintenance and repair manual for the Lada Granta VAZ 2190

In the instrument cluster there is a fault indicator for the electric power steering. It lights up when the ignition is turned on and goes out after the engine starts. If the electric booster fails, the indicator lights up constantly. The electric booster does not work when the engine is not running.

The electric booster can be turned off:

— when the voltage of the on-board network decreases;

— in the absence of a signal from the speed sensor and the engine speed is above 1500 min 1

Such shutdowns are inherent in the operating algorithm of the electric amplifier and are not signs of a malfunction.

Removal

You will need: a screwdriver with a Phillips blade, keys “8”, “13” (two), socket wrench “13”.

1. Disconnect the wire from the negative terminal of the battery.

2. Remove the steering wheel.

3. Pull towards you and remove the fuse box cover.

5. Remove the steering column switches.

Most cars today are equipped with a cabin air filter. Lada Granta cars have such a filter as standard. Its task is to filter the air entering the cabin from outside. If one filter operates for too long, the heater does not work well, the air in the cabin is not cleaned, and bacteria and dust particles appear in it.

According to manufacturers' recommendations, the Lada Granta cabin filter should be replaced every 5-7 thousand kilometers. However, one of the signs that a new filter needs to be installed prematurely is dust or an unpleasant odor coming from the air ducts.

Steering functions

Steering is the system that allows the vehicle to move. It consists of a steering wheel, rack, mechanism and drive. The principle of operation of the steering wheel is based on the fact that the wheel receives the impulse of force exerted by the driver and transmits it to the mechanism, which reacts in accordance with the direction specified by the driver. That is, when the driver turns the steering wheel, he transmits the turning force to the mechanisms that are connected to the front wheels, and this is how movement occurs.

The structure of the Lada Granta steering mechanism

The steering wheel of a passenger car differs from the steering wheel of a truck primarily in diameter. In the first case it is 390-420 mm, in the second - 445-545 mm. Sports cars have a smaller steering wheel than the standard one installed on a regular passenger car. In addition to the diameter, there is a difference in the control mechanism.

Today, there are several types of steering columns, from conventional and inexpensive to those built in a type that allows it to fold in the event of a high-level frontal impact. In addition, the steering columns have both mechanical and electrical adjustment, which is very convenient when you need to adjust the height of the steering wheel or its direction.

In recent models belonging to luxury models, there is a steering column that can be easily moved from the driver's seat to the right passenger seat. Steering mechanism is a device that transmits vibrations from the force on the steering column to the drive.

There are several types of steering gear, the most common of which is rack and pinion.

It is also found in Russian models Lada Kalina, Grant, VAZ 2114 and other AvtoVAZ projects. But the legendary BMW, Toyota, Mazda and others are equipped with a more complex steering mechanism, with the principle of operation on all four wheels. This solution guarantees greater stability and excellent handling.

The drive transmits force from the steering mechanism to the wheels. Today, several drive designs are known, depending on what kind of suspension is installed on the car. The most popular and well-known is the mechanical drive, which consists of hinges and rods. This type of design is found both in Russian models, such as Grants, and in European projects.

List of online stores, addresses of companies providing services

2.Motel Varshavsky - Spare parts store: Hyundai, LADAMoscow (metro Annino), metro Annino, 32 km. MKAD (on the territory of Kashirsky Dvor 3). Telephone, 3. "Expert-Auto" - Spare parts store: Renault, LADAMoscow (m. Tulskaya), Zagorodnoe shosse, 7A, telephone, 4. "Spare parts on wheels" - Spare parts store: Renault, LADAMytishchi, Volkovskoe shosse, d. 13, telephone, 5. Service station "Auto service on Sedova" m. Elizarovskaya, Sedova street, 11AB, box C

Reviews of companies

• Vasily: six months ago I installed a servo drive on Grant at the A1-Motors service station. The guys did everything quickly and professionally. My recommendations.
• Ivan: after buying the Lada, I replaced the power steering with an electric power steering. I ordered the work from the service station “Auto Service on Sedova”. New equipment, many repair boxes, work professionally.
• Innokenty: comrades recommended installing an electric power steering system. I bought it at the Motel Varshavsky parts store. Good quality, reasonable prices, bonuses when purchasing.
• Vladlen: I drove the power steering for two years and decided to switch to the electric power steering. They advised to buy from Expert-Auto. Six months have passed since installation, no complaints, my recommendations.
• Vyacheslav: I’m leaving my positive review about the auto parts store “Spare Parts on Wheels”. Professional advice, reasonable prices, friendly staff.

New Lada: Lada Granta Space›Logbook›Handbrake check

Rack adjustment

Before installing the rack and rods back, it is necessary to set the gaps of the gear connection. Please note that it is better to immediately replace the thrust nut with a new one. Set the rack to the middle position, as if the wheels were straight. For adjustment, a special clock-type indicator mechanism is used. We start rotating the gear shaft and measure the indicator readings.

If the value is 0.05 mm, then the adjusting nut should be tightened to the same amount. After the steering rack adjustment is completed, check the ease and uniformity of movement along the entire length of the rack stroke. Provided that everything is done accurately, you should fix the position of the adjusting nut by performing special core punching with a punch. When all the work has been completed, you can begin to reinstall the steering mechanism on the Lada Granta.

After the mechanism has been installed back on the car, you should, even before starting to drive with the car stationary, turn the steering wheel, checking the uniformity of rotation. A check that will reveal that there is no knocking can only be done while driving on a rough road.

Steering malfunctions usually occur due to insufficiently frequent preventive inspections. If the owner has missed the appearance of minor leaks in the steering mechanism, loss of integrity of the protective covers, then the likelihood that a knock will soon appear in it is quite high. Therefore, it is important to carry out annual diagnostics.

Is it worth installing electric power steering on a Lada Granta car?

The cost of the EUR for Granta Liftback is 15-20% more expensive than its hydraulic counterpart. Not every owner can afford installation.

The average driver will not feel the difference between power steering and electric steering. But motorists who spend a lot of time behind the wheel will appreciate the innovation from the first minute.

First of all, the installation of an EUR should be considered by taxi drivers, managers, and suppliers whose work involves constant travel.

Is it worth installing electric power steering?

Driving a car without electric power steering is, of course, possible. But if you have previously driven a car equipped with such a system, you may experience serious discomfort. You will be deprived of the usual electric motor support.

Installing such a mechanism has certain difficulties and is also associated with costs. But they will all pay off in a comfortable ride and increased safety for you and your passengers.

Thus, the answer to the question “Is it worth installing?” - this is a definite “Yes”. Even if you don't want to do it yourself, contact a car service.

In the video below you will find a comparison of the advantages of power steering and power steering (the author of the video is AVTOTEMA TV).