Removing the airbag control unit (SRS unit) Lada Granta VAZ 2190

Characteristics of power steering of Lada Largus

This unit is no less important than the brake system. The safety of the driver and passengers also depends on its performance. Power steering (hydraulic power steering) provides the ability to control the car by easily positioning the drive wheels in the desired direction.

Largus power steering diagram

The Lada Largus is equipped with a combined type hydraulic booster, i.e. some of its elements are located directly in the steering mechanism housing. In other words, they are a component of the mechanical part of the steering column. Power steering Lada Largus consists of a standard set of elements:

• tank;
• power steering pump, complemented by a working fluid bypass valve;
• pipelines;
• redistribution mechanism;
• working mechanism.

There are not many components, which explains the high reliability of the hydraulic booster. Malfunctions associated with its operation occur infrequently. Typically, problems arise due to violations of operating rules by the car owners themselves. Much less often - due to the natural wear and tear of parts, but, of course, one cannot ignore the low quality of components.

It's easy to check; just open the hood. The fluid in the system is also needed to lubricate the power steering elements. If the level is low, parts will begin to wear out too quickly. With such use, the unit is more likely to fail.

Purpose and operating principle of SNPB

The airbag system is an additional means of protecting the driver wearing a seat belt and is designed to reduce the severity of his injury during frontal (±30 degrees) vehicle collisions in traffic accidents. SNAP is triggered depending on the force of the vehicle’s collision with various obstacles. In case of normal activation in an emergency situation, the SNAP is launched regardless of the state of the driver's seat belt fastening. Therefore, the use of a seat belt by the driver is a prerequisite for the effective operation of the air safety system.

The airbag system begins to function after the ignition is turned on and is controlled by an electronic unit (BUSNPB) with a self-diagnosis function. The system is activated by submitting an electrical signal from the BUSNPB to the airbag module.

If the airbag is activated, the upper part of the cover of the facing module of the airbag, when the airbag is filled with gas, breaks in structurally defined places and opens into two or three parts. Through the resulting opening, the gas-filled airbag bag deploys in front of the steering wheel or instrument panel. The filling time of the pillow is about 30-40 ms. After the airbag inflates due to excess pressure, the gas escapes through special holes located in the rear of the airbag bag, thereby preventing the driver or passenger from colliding with parts of the vehicle's interior and at the same time softening the severity of the impact of their head and chest.

SNPB device

The LADA 2190 car in the “Norma” configuration is equipped with a single-channel SNPB, which includes:

• gas generator module (MNPBV) (part 21910-8232010-00);
• airbag system control unit (part 21900-3824010-00);
• connector with rotating device (part 21700-3709315-00);
• steering wheel (part 21910-3402018-00).

Airbag system:

1. driver airbag module;
2. installation location of the SNPB control unit.

The gas generator module (MNPBV) consists of a gas generator 1, a housing 7 with an inflatable cushion folded in it, a facing cover 9, a sound signal switch and fasteners.

Gas generator module (rear view):

1. gas generator;
2. hooks for fixing MNPBB;
3. horn switch contacts;
4. hooks for fixing MNPBB;
5. location of the identification label;
6. gas generator igniter connector;
7. a body with an inflatable cushion folded in it;
8. hooks for positioning MNPBV;
9. facing cover.

The gas generator produces gas inside the module to inflate the airbag. The pyrotechnic substance located in the gas generator is ignited by a fuse-igniter mounted in the gas generator housing. There are two main types of gas generators. A pyrotechnic gas generator consists of a housing filled with a solid pyrotechnic substance and an igniter. In it, gas is produced when a pyrotechnic substance is burned. Used in the driver airbag module. A hybrid gas generator consists of a housing filled with compressed inert gas and a pyrotechnic substance, and an igniter. Used in the passenger airbag module. An igniter is a device with electrical resistance and a pyrotechnic substance. After receiving an electrical signal from the BUSNPB, the electrical resistance heats up and ignites the pyrotechnic substance of the igniter, followed by ignition of the bulk of the pyrotechnic substance of the gas generator.

An airbag is a bag made of synthetic material, built into the module body, which is filled with gas under pressure when the module is activated. The airbag is folded in a special way and closed with a facing cover.

The facing cover is a part that covers the airbag and ruptures when the airbag is filled with gas along the structural seam located on the back side of the cover.

Location of BUSNPB:

Principle of operation

The security unit was developed in the middle of the last century. With the introduction of electronics, it has undergone some changes, but the principle of operation has remained virtually unchanged. Automakers do not adhere to any standards; moreover, many of them use their own developments.

At first glance, this appears to imply a narrow specification of the constituent parts. In fact, everything is just the opposite. Main components of the block:

• a set of sensors;
• airbags;
• SRS unit;
• wiring;
• lamp on the instrument panel;
• squib;
• belt tensioners.

The general principle has remained unchanged for many years. And this is what he looks like.

1. When an impact occurs, sensors are activated - there can be up to 10 or even 15 of them. They transmit information to the SRS unit about the location and force of the impact.
2. The electronic unit processes this information. Taking into account the side of the impact and the number of passengers, it sends a signal to activate the airbag and belt.
3. The squib fires and the airbag covers are knocked out.
4. Bleeding air through a special valve or hole.

In addition to the points listed above, it is necessary to clarify one point. When the airbags deploy, Crash Data is recorded in the electronic unit. After this it stops functioning.

Lada Granta 2013, 87 l. With. — self-repair

I looked into the topic when I found out that instead of a pillow there is a plug. This means they open it and use this place for the necessary purposes (made a glove compartment). Maybe how to remove it, of course. Please tell me. Thank you in advance.

a very annoying resonating rattling appeared somewhere in front, it felt like behind the panel of unfamiliar passengers, or closer to the center, it only appears when you add gas when driving around 2000 rpm , if you do not notice it when accelerating in neutral. How can I get rid of this for this reason?

First, check if the torpedo is rubbing against the windshield, apply pressure there. In general, take a walk with torpedo polish, it usually contains silicone, if it disappears, it means the plastic is rubbing against the glass

What I haven’t done before is spray it liberally with silicone spray, it doesn’t help, I previously did it like this: 1. www.drive2.ru/l/3675002/ 4.vgrante.ru/?cat=90pcat=8

What to do after the airbag is triggered?

It is worth knowing that restoring airbags without involving service station specialists is a dangerous undertaking.

And the problem is not even that in the event of a collision the airbags are less likely to open. It's worse if they work spontaneously.

To avoid problems, you should contact an official dealer, who will adjust the system and replace faulty components.

When servicing yourself, there are a number of points to consider:

1. In some cars, the airbag and squib are one unit that is purchased as a kit. This is done at a disassembly site or in a store (the first option is cheaper, but the risk of the product not being opened in an accident increases). There are also companies that do not change the airbag, but supply it with a whole squib (such a restoration should be avoided).
2. In addition to the airbags, in 60% of cases the control unit also has to be replaced. If you're lucky, flashing the firmware will suffice. This is explained by the fact that in the event of a collision, information about the operation of the system is recorded in memory. Therefore, one replacement is not enough - the device will not work. The solution lies only in reflashing.
3. In some cases, entire seat belt pretensioners are installed - units that compensate for stretching and tighten the belt during an accident.
4. The final repair cycle is the restoration (replacement) of the airbag covers (often included). The problem with many cars is the lack of such covers, which forces the car owner to change the panel or repair the old one using dermantine, leather, or by soldering damaged areas. Such events are theoretically acceptable. But will you be sure that in the event of an accident the cover will allow the airbag to deploy?

When repairing an airbag, the following points are taken into account:

1. Removing the negative terminal from the battery is mandatory, after which you should wait until the autonomous power source discharges (7-10 minutes);
2. The airbag is positioned with the body facing towards itself.

Often, car enthusiasts do not repair the airbag and limit themselves to restoring the body. In this case, the light bulb on the dashboard is removed or a “fake” is installed instead of a pillow.

This approach is dangerous. It is better to contact an official dealer and restore the system.

As for selling a car with a deployed airbag, this is real, but the new owner should be aware of the problem.

If you repair the panel and turn off the “lamp,” the buyer is unlikely to notice anything without diagnostics, but in the first accident, his death falls on the conscience of the seller.

How to remove the steering wheel cover on a grant

I decided to share with you detailed instructions for this procedure. It seems like there is nothing complicated here, but there are several points that I came across after reading various manuals on the Internet. As a result, the mistakes I made hit me pretty hard. Namely, I had to change the block of steering column switches. And it costs not much, not little: 1100 - 1300 rubles.

So let's get started. We carry out everything strictly point by point:

1. Disconnect the negative terminal of the battery. After this, you must wait at least 10 minutes. in order for the airbag activator capacitor to discharge. Remove the terminal and wait 10 minutes. !MANDATORY!, if you don’t want to have the consequences of a deployed airbag.

2. You need to release two airbag latches. They are held in place by two spring clips.

Pay attention here! ATTENTION ! to the following: Without calculating, I pulled the pillow towards me and it abruptly jumped out of the additional fastenings. The wire from the airbag is short, and the L-shaped connector of the airbag shattered due to a strong jerk and tension. It is of such a shape and material that it shatters into pieces from any unnecessary effort. Inside it are not just terminals, but also some kind of inductor (like a coil). This piece of wiring with connectors is not sold separately. Only together with the steering column switch block. So take all of the above into account and don’t repeat the mistakes of others. Do everything carefully and slowly. 4. Having freed the Pillow from all fastenings, carefully move it away from the steering wheel.

Perform further actions in strict sequence so as not to break the latch of the steering column switch block, and the block itself.

6. Use a 24mm socket wrench to loosen the steering wheel nut. Do not unscrew it all the way. Leave it twisted a couple of turns. 7. By rocking the steering wheel to the sides and pulling towards you, pull it out of the seat. It will rest against the nut. 8. Align the car wheels and set the steering wheel straight. 9. Remove the latch from the pocket. Aligning the marks, insert the lock into the block of steering column switches, as shown in the photo.

We perform the assembly in the reverse order, paying attention to the important nuances that I indicated earlier.

Operating a Lada Granta car requires certain protection for the driver and passengers. Not so long ago, airbags began to be installed on cars of the domestic automobile industry. But there is one problem: they are disposable and will have to be replaced when triggered. This process is difficult and requires some experience and knowledge. Also, in rare cases, it is necessary to remove or replace the steering wheel, which can crack or become deformed when the driver hits it.

Lada Granta with airbag

Replacing the Lada Granta airbag

We remove the airbag when removing the steering wheel, when the airbag deploys, or when the airbag malfunctions.

The presence of an airbag on the vehicle is confirmed by the inscription “AIRBAG” on the cover of the driver’s airbag module installed on the steering wheel, the inscription “SRS/AIRBAG” on the cover of the front passenger’s airbag module located in the instrument panel, and the inscription “AIRBAG” on the label of the front airbag tape. seat belt.

The condition of the SNAP is monitored by a signaling device located in the instrument cluster, which, after turning on the ignition, in the absence of a malfunction, should turn on for 3–4 seconds and turn off.

If there is a malfunction of the SNBP:

– the indicator turns on again after 3–4 seconds of lighting when the ignition is turned on or while the vehicle is moving and remains on until the malfunction is eliminated;

– when the ignition is turned on, the indicator does not turn on.

Flashing of the indicator after turning on the ignition indicates that the SNAP control unit is in a locked state.

The factory recommends replacing airbag modules after ten years from the date of manufacture. The date is indicated on the airbag module label.

The driver airbag module uses a pyrotechnic gas generator, which consists of a housing filled with a solid pyrotechnic substance and an igniter. In it, gas is produced when a pyrotechnic substance is burned.

Removing the driver's airbag

We prepare the car for the job.

Turn off the ignition and disconnect the negative cable from the battery.

After disconnecting the battery, you need to wait 10 minutes until the airbag activator capacitor is completely discharged.

The driver's airbag is mounted on the steering wheel with two plastic hooks 2 and 4, Figure 2, and two positioning hooks 8.

The hooks of the pillow fit into the holes in the bracket for fixation 2 and are fixed with spring clips. The airbag latches fit into recesses 3, Figure 3, on the steering wheel.

We set the steering wheel to the “straight” position and, by removing the key from the ignition switch, fix this position.

Use a thin flat screwdriver to pierce the hole marked on the steering wheel. We also pierce a hole on the other side of the steering wheel.

Using two screwdrivers, press out the spring clamps through the holes (in the picture with the airbag removed), pulling the airbag towards you, we remove the hooks of the airbag from engagement with the clamps on the steering wheel.

We pull the pillow towards ourselves, overcoming the resistance of the clamps, and remove it from the recesses of the steering wheel.

Move the airbag away from the steering wheel

Disconnect the horn wire ends

Use a screwdriver to pry the clamp out of the wire block

Disconnect the wire block from the airbag connector

Removing the airbag

The removed airbag should be stored in a place protected from moisture and excessive heat, with its cover facing up.

Installing the airbag is done in the reverse order.

We connect the block of wires to the airbag connector, insert the lock into the block.

We connect the wire lugs to the terminals of the signal switch.

We install the cushion on the steering wheel so that the cushion clamps fit into the recess of the steering wheel, and the hooks of the cushion fit into the corresponding holes in the steering wheel.

Press the cushion until the hooks of the cushion snap into place with the steering wheel latches.

In a factory or car service center, plastic wedges are used to remove airbags (Figure 11).

And devices for removing pillows are used (Figure 12).

Removing and installing the driver's airbag

The Lada Granta, unlike its predecessor Lada Kalina, is safer in many respects. Despite the fact that the models are essentially almost the same. Industrial security is an integral part of the entire system that ensures safety. The Lada Granta is equipped with an airbag on the driver's side, as well as side airbags for the passenger sitting in front and the driver. The front passenger also has the main passenger compartment on his side, as does the driver (in the luxury version)

Removing the driver's side airbag in a Lada GRANTA.

Before removing the PB, you must turn off the ignition and stop the car. Next, after raising the hood, remove the wire from the negative battery. Here’s another important point: the car’s wheels must be in the “straight” position, or rather in a straight line.

Then you are on the side of the steering wheel and unscrew the 2 bolts that secure the gas generator module assembly to the steering wheel, then disconnect the harness with the L-shaped plug from the gas generator module assembly and carefully remove the gas generator module assembly from the steering wheel.

Please note that if the module does not work, it must be placed on a flat surface with the lid facing up.

The next step is that you must unscrew the two screws securing the casing of the upper steering shaft and remove the casing (upper) with a Phillips screwdriver and be sure to remove the ring (sealing) from the ignition switch.

Next, you need to disconnect the on-board network wiring harness from the device connector (rotating), then disconnect the steering wheel signal switch harness from it.

And the last step is to remove the connector with the device (rotating) from the steering shaft with a flat screwdriver.

Installing an airbag in a Lada GRANTA car

Let us remind you that before installation, as well as during removal, the wheels (front) must be in the straight-line position of the machine, and the battery terminal (-) must be disconnected. Next, you need to install the connector with the device (rotating assembly) on the steering (or steering) shaft. Then remove the red key (transportation) from the device, which fixes the moving part of the device in the middle position. To do this, you need to rotate it around its axis by 90 degrees (+30). Then install the washer and alarm (light) levers into our connector, then connect the car’s on-board power supply blocks to them. Then you will need to thread the 2 wires of the device (rotating) into the hub part of the steering wheel (right hole). Next, you need to secure the steering wheel with a nut, while its spokes should be in a horizontal position, then connect the wire of the signal switch (steering wheel) to the wire of the device (rotating), while the second wire should remain unconnected. Next, you need to connect the car’s on-board power wire to the connector (plug) of the device (rotating), then install the O-ring on the ignition switch, install the lower casing and secure it with screws using a Phillips screwdriver. Then install the upper shaft casing and secure it with the lower one, then connect the wire and the L-shaped plug of the device (rotating) to the gas generator module (assembled) and secure the plug connector. Then you need to bolt the module to the steering wheel with two bolts and connect the (-) terminal to the battery.

Finally, turn the steering wheel all the way to make sure there are no knocks or jams.

Control unit VAZ 2190 Granta with airbags and seat belts for 2

Dear customers, in order to avoid errors when sending the airbag and seat belt control unit, in the “Comment” line indicate your car model, year of manufacture, one, two or four airbags and seat belts.

Most modern cars are equipped with a variety of safety systems designed to minimize harm to human health during an accident. One of the main ones is airbags. If the airbag system indicator on your car goes off, this means that during an emergency it will not be able to fulfill its main purpose well - to soften the impact.

Takata electronics aims to constantly monitor the speed of the car, its position on the road, the “fastening” of seat belts, the number of people in the cabin, and also at the time of the accident to record the nature and location of impacts on the car. According to the block indicators, the system automatically makes a decision regarding its operation.

The SRS or AutoLiv system, Airbag, known to us as “airbags”, is an elastic module that is filled with air or gas, with an electronic control unit and seat belts. Airbags are designed to soften impacts and reduce injuries during an accident, but most importantly, they serve to preserve the health and life of drivers and passengers.

The airbag gas generator module assembly is a combination of a sensor, an actuator and a nylon airbag. The explosion is achieved by controlled ignition of explosives, which are in the form of pills. At the moment of the explosion, air fills the pillow at incredible speed.

If the SRS icon is lit on your dashboard (drivers call this symbol “pot-bellied guy” :)), then you definitely need to worry about repairing the airbags in your car.

At the same time, the lighting of the Airbag indicator does not always mean that the airbag is faulty. Now many automakers are connecting to it other systems involved in ensuring the safety of the driver and his passengers. They are usually collectively referred to as "SRS".

It includes:

– airbags;

– shock sensors;

– pretensioners;

- seat belts;

- Control block

and others, if provided by the manufacturer. That is, if the airbag system light comes on, something has happened to one of these components. It is difficult for an inexperienced driver to accurately determine the cause of the malfunction, so if such a problem occurs, it is better to contact an experienced specialist. He will make a diagnosis and recommend methods for eliminating the problem; it is also worth checking the ABS indicator (anti-slip indicator).

The security system with the SRS indicator on is completely inoperative. If the airbag indicator is constantly on, then in the event of an accident not a single airbag will deploy, even if they are all in place. The indicator should light up when the ignition is turned on and go out after a few seconds.

After an accident, the system stores all information about the collision in the electronic unit and an indicator lights up on the control panel, signaling the need for repairs.

Repairing the airbags themselves is not possible and they must be replaced.

– Attempting to remove the airbag module without disconnecting its power supply may result in unexpected deployment of the airbag.

– You can begin the following work to remove the airbag only after the activator capacitor has completely discharged. To discharge the capacitor, you must wait at least one minute after turning off the power supply. Do not disassemble the airbag module.

– Do not drop the airbag module and do not allow water, grease or oil to come into contact with it.

– The airbag module must not be exposed to temperatures above 95 °C. When installing the module in the steering wheel of a car, be outside the airbag deployment area.

– When you turn on the ignition for the first time after installing the airbag module in the vehicle, stand outside the vehicle and turn on the ignition switch by reaching under the steering column.

Other article numbers of the product and its analogues in catalogues: 21900382401010.

VAZ 1117-1119, VAZ 2190.

Any breakdown is not the end of the world, but a completely solvable problem!

How to independently replace the airbag and seat belt control unit on a Lada Granta car.

With the online store Discounter AvtoAzbuka, repair costs will be minimal.

Just COMPARE and BE SURE!!!

Don't forget to share the information you find with your friends and acquaintances, because they may also need it - just click one of the social networking buttons located above.

The nuances of replacement and what should be prevented

As with any car repair for the Lada Granta, when replacing the airbag and steering wheel, there are nuances that need to be taken into account. So, what is worth considering when performing dismantling work:

• Before you begin removing the airbag, it is imperative to disable the control module. If this is not done, then the probability of the airbag triggering when turned off is 99%.
• When the power is turned off, you need to wait until the activator capacitor discharges. The manufacturer recommends doing this after 1 minute, but as practice shows, it may take up to 3-4 minutes, so you should wait 5 minutes.
• Never allow water, oil or other liquid materials to come into contact with the cushion module.
• When installing the airbag, you should be outside the triggering area.
• After installing the airbag, you should turn on the ignition by reaching under the steering column.

Compliance with all the listed nuances will protect against airbag deployment and harm to a person, since in practice there have been cases when neglect of safety precautions became fatal for car service workers.

Why restore airbags?

Repairing airbags is not a cheap pleasure. Especially on cars where there are about or more than ten of these airbags.

Many car enthusiasts abandon the repair idea, limiting themselves to only repairing airbag covers. And the light on the instrument panel, signaling a malfunction, is simply pulled out or a “fake” is installed.

Whether to restore the Airbag system from an authorized dealer or on your own, and whether to repair it at all, is up to everyone to decide for themselves, but safety is not the case where you should save money.

Sometimes I receive letters on AUTOBLOG with questions about airbags. Some questions are related to the device (but this is an extensive article and there will definitely be one), but many ask questions about repairing or restoring pillows. Today I decided to write an article, it will probably disappoint many, but first things first...

Without going into deep technical details, an airbag is an element of the active safety of a car. In the event of a collision, based on data from special sensors, the airbags fire, thus protecting the driver and passengers from the inertia of a collision with another vehicle or obstacle. It should be noted that the protection is very effective (severe injuries or death are reduced tenfold), but such protection only works at certain speeds.

Food for thought: - There is no need to delude yourself, airbags are effective at speeds up to 60 - 70 km/h, after this point the efficiency decreases in a quadratic progression with each kilometer exceeded. According to active safety experts, airbags are practically useless at speeds between 100 and 120 km/h. So think!

Well, okay, that’s not what we’re talking about today, what about restoring or repairing airbags? Guys, not everything is simple here either!

Just about the structure

As I already wrote at the top, there will be a whole article in detail, but now a small explanation.

The pillow itself consists of several parts.

pillow assembly

The first is the front side, usually this is a plastic lining of the steering wheel or the front instrument panel; there may also be fabric “linings”, for example in the seats.

The second is the airbag itself, which is folded and opens during a collision and inflates.

The third is a squib, a complex device that carries a charge and solid fuel in its structure. In the event of a collision, the charge shoots into the fuel and a gas (usually nitrogen or argon) is formed under high pressure, which inflates the airbag in a matter of seconds. Opening speed exceeds 300 km/h.

That is, to put it simply, this is a single-shot device, somewhat similar to a regular firearm cartridge, it fires and that’s it! I hope the principle is a little clear.

How to repair - restore?

No way! If it shoots, then you simply need to change it. We don’t repair a regular weapon cartridge, and the same goes for a pillow.

Again, there is proper restoration, and there is simply criminal!

Proper restoration is when the squib is changed and a new cushion block is installed, and the plastic lining is correctly restored. Of course, such repairs are not so cheap, but they are still somewhat cheaper than a completely new unit. Again, this matter should be entrusted to professionals, because an incorrectly configured unit can work at any time and provoke an accident.

Incorrect or criminal restoration is when they throw out all the used pillows and fill the place with cotton wool - polyurethane foam, etc. The plastic cover is not difficult to restore, so it is attached on top. Of course, this allows you to avoid the very large costs of purchasing a new unit, but such savings in the event of a serious accident could cost you your life. Don’t skimp on safety because it’s almost always your life.

I’m posting a short video, showing the airbags, and a short video of how they are restored correctly.

In conclusion, I would like to say that if you are in an accident and the airbags are deployed, there are several correct solutions. Sell ​​the car in this condition - without deceiving buyers (you can also buy spare parts), restore everything completely, including the airbag unit, and drive it yourself or sell the car. There shouldn’t be any other options, don’t worry about it!

That's all, read our AUTO SITE

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Causes of airbag failure

The reason for the failure of the Lada Granta airbags is:

• Triggered due to an accident.
• Closure of the pillow package, which prevented it from opening, or a manufacturing defect.
• Battery failure, which caused the airbags to deploy.
• Wear of the pillow module.

Reasons for failure of the Lada Granta steering wheel:

• Deformation of the structure due to the driver hitting the steering wheel.
• Braid wear and cracks.
• External factors that caused damage to the steering wheel.

All this becomes the reason for the forced replacement of the steering wheel and airbags.

Catalog numbers and steering wheel analogue options

It is generally accepted that only original spare parts for the steering wheel and airbags can be installed on the Lada Granta, but this is a misconception. There are several analogues of these parts, which are known only to tuning masters and some car enthusiasts.

Let's look at the catalog numbers and manufacturers of the Lada Granta steering wheel:

• The original VAZ part has the manufacturer's catalog number - 21910-3402018-00. It fits perfectly and does not require any improvements or modifications.

  Factory steering wheel

• An analogue can be the steering wheel from article number DM-K65100. This part, just like the original one, can be installed without modifications. Available in black with red or blue accents.

  One of the sports steering wheel options

• Tuning steering wheel. There are many options, and essentially any type or model can be installed. It is worth remembering that you will have to install an adapter between the tuning part and the steering shaft.

Catalog numbers and airbag manufacturers

Let's look at the catalog numbers and manufacturers of Lada Granta airbags:

• The original spare part is produced by the VAZ plant. It consists of several elements that include: a gas generator module (21910-8232010-00) and a safety control unit (21900-3824010-00).

  Airbag module

  Airbag control unit

• Manufactures alternative airbags. They have the same catalog numbers as the original, but are highly reliable and accurate.

Thus, you can understand that in addition to standard parts for the steering wheel and airbags of the Lada Grant, there are also analogues that few people know about.

This is interesting: Removing the hood lock of Lada Granta

How to disable the passenger airbag Kalina 2

Accident statistics show that an airbag reduces the death rate by an average of a third. There are cases when a serious collision ended in a slight injury due to the opening of the airbag. But what to do after the airbag deploys on an Opel Astra, Lada Granta or Priora, as well as on other cars? How to fix the error?

Airbag device

An airbag cushion is an elastic base that fills with gas in the event of an accident.

The complex of components also includes a control system and a gas generator. Starch or talc acts as a lubricant for the material, guaranteeing clear opening.

The gas generator's job is to fill the airbag with gas during a collision. Together, the gas generator and the shell form an airbag.

Airbag designs are classified:

1. By the nature of the action - with one and two-stage operation;
2. In shape - in the form of a tube or dome;
3. According to the type of gas formation - hybrid or solid fuel.

A solid fuel generator is based on a fuel charge, a squib and a housing. The airbag is charged with a special composition based on silicon dioxide, potassium nitrate and sodium azide.

The fuel is ignited by the action of the squib, after which gas is formed.

In a hybrid gas generator, the main components are a squib, a housing, a gas and a solid propellant charge.

After a collision, the airbag cushions are filled with compressed gas, releasing a solid propellant charge.

The task of the control system is to combine devices (control unit, shock sensors, squib) and guarantee their precise operation.

How does an airbag deploy in an accident?

The airbag is deployed during a collision with another object or vehicle.

Depending on the location of the impact, the front or side airbags are activated. As soon as the impact force is above the limit level (set by software), the impact sensors send a command to the control unit.

The latter collects information, analyzes it and decides whether to deploy the airbags or not. The described actions occur in a fraction of a second.

The control unit sends a command to turn on the gas generator of a specific airbag. In this case, the response time is 30-40 ms. During this period, the gas generator guarantees the expansion and filling of the pillow with gas.

As soon as the airbag touches the human body, it ruptures and deflates.

The front airbags are activated when a number of conditions are met:

• Car fire;
• Increasing the specified impact force in a frontal collision;
• Vehicle crash;
• A sharp collision with the wall of a hole, a curb or the edge of a sidewalk;
• Impact to the end of the car (oblique frontal collision);
• A hard fall on the wheels after a “jump”.

It is worth knowing that the front airbags do not deploy in the following cases - when the car rolls over, a side impact or contact from the rear.

It is built into the car program that before opening the airbag, the speed of deceleration of the car and movement at the moment of collision, the presence of connected seat belts, and so on are analyzed.

For more information on this topic, see here https://autotopik.ru/obuchenie/503-kak-rabotaet-podushka-bezopasnosti.html.

What to do if the airbag deploys?

Car enthusiasts are often lost and don’t know what to do when opening an airbag. On many cars (Lada Granta and Priora, Ford Focus 2, Lada Priora, Opel Astra and others), you will have to perform the following manipulations:

• Install new airbags, replacing those that have already deployed;
• Correct the “brains” of the control system, that is, the unit that is responsible for the SRS. Instead of the error, a dump of the new machine is installed (as if there was no accident);
• Install a special snag (plug).

The problem is that each manufacturer has classified information, which forces car enthusiasts to buy a new control unit for the airbag. In addition, airbags are often tied to the VIN number or model of the vehicle.

If you go to a service station, the cost of restoration work will hit your wallet.

Experienced car enthusiasts copy a security system dump and write it to a remote memory device.

Data is stored until sold. If the car is involved in an accident, it is easier for a specialist to restore the system.

In this situation, a microcircuit and a programmer are purchased, after which the device is flashed. The average cost for such work is from 5-7 thousand rubles.

Instructions for removing the steering wheel from the Lada Granta

1. The first step is to disconnect the negative terminal from the battery. After this, you must wait at least ten minutes until the airbag activator capacitor is completely discharged.

Note: you must wait at least 10 minutes, otherwise there is a chance of getting hit in the forehead after it is triggered.

1. The second step is to disconnect the pillow by unclipping the two clips on the spring clips that hold it in place. To compress them, there are two holes on the steering wheel on both sides (if the steering wheel is removed for the first time, they will be “closed” with some kind of plugs).
2. Next, if there are any, they must be carefully pierced, for example, with a Phillips screwdriver.
3. Then, again, you need to insert a flat-head screwdriver into the hole in the seal and feel for the spring-loaded stop.
4. Afterwards, you need to squeeze the latch with one hand, and with the other, pull the airbag towards you from the side until you hear a click. Now the screwdriver can be released, and if the pillow does not return to its original position, then the latch has become unfastened.
5. Now, in the same way, you need to pull it out from the other side, while supporting the opposite disconnected side so that it does not snap into place again.
6. Next, remove the additional cushion fasteners located below. They hold tightly enough, so you can remove them only by firmly grasping the pillow and pulling it towards you from below.

Note: the airbag wire on the Granta is short, and if you pull too hard, it will stretch and break, which will damage the airbag connector. And this is a very delicate part that can shatter into small pieces from any wrong movement. Inside the AirBag (airbag), in addition to the terminals, there is also a throttle. It is not possible to buy it separately, only with a block of steering column switches. Therefore, calculate your strength correctly and do not rush anywhere to avoid unnecessary problems.

1. Once the airbag is detached from its mountings, it can be moved away from the steering wheel.
2. Next, you need to unfasten the 2 wires of the sound signal, after which, using a knife or a flat-head screwdriver, pry up the small retainer (yellow), which is located on the orange connector of the pillow, after which it will “move” a little forward.
3. Now the connector is removed and the pillow is set aside.
4. It is also necessary to remember the correct position of the steering wheel when reinstalling it. To do this, use a marker or colored pencil to make a mark on the shaft directly opposite the arrow.

Further, all actions must be performed clearly and strictly sequentially, so as not to damage the latch of the steering column switch block or the block itself.

1. Using a 24 mm wrench you need to loosen the steering wheel nut, but you don’t need to unscrew it completely, let it remain screwed in with a few screws.
2. Next, you need to disconnect the steering wheel by pulling it towards you. At the same time, it should rest against the nut.
3. Now you need to align the Granta's wheels and set the steering wheel straight.
4. Then you should remove the latch from the special recess and, aligning the marks, insert it into the block of steering column switches.
5. Only after the steering wheel is accurately fixed can you unscrew the nut completely.

Note: you must be careful not to move the steering wheel with the red lock, in which case it will turn it out with the roots of the steering column switch block.

1. Next, the steering wheel is removed, while passing the wiring through the gap.

Assembly is carried out in the reverse order, observing the sequence.

That's all! As you have seen for yourself, there is nothing difficult to remove the steering wheel from a Lada Granta car with your own hands.

We hope that our article was useful to you!