Removing the airbags and seat belts of the Lada Priora

The main distinguishing feature of the Priora steering wheel is the presence of an airbag. That is, it has two electrical devices in its filling:

Horn switch.
Airbag kit.

Because of these difficulties, it was necessary to install a special drum with contact tape in it to turn on these devices.

Attention! Not all Prioras are equipped with an airbag, but in any case there is a cavity in the steering wheel for it.

Because of this feature of the Priora steering wheel, removing it requires great care.

Why change or remove it?

The car steering wheel itself is very durable. Therefore, steering wheel replacement is rarely required. But I have to shoot much more often. Replacement is usually done when tuning a car for a “sports” version. Accordingly, such a replacement is only one of the episodes in a complex of alterations.

And the removal of the Priora steering wheel must be carried out for repair and maintenance of electrical components.

Safety system

The Lada Priora has a built-in safety system that is activated in the event of a collision. This system is represented by an inflatable soft pillow that expands at the time of an accident. The Priora has 4 airbags: one for each passenger, including the driver. They operate only in the event of a sharp collision at a speed of over 20 km/h, so they never open accidentally.

The driver's airbag is located directly in the Priora's steering wheel, which can cause some difficulties when trying to remove or replace the steering wheel or its elements. If you are going to install a new steering wheel, then it is worth finding out a little about the features of the location of the cushion.

The design itself is quite simple and consists of the following elements:

gas generator;
pillows;
control module.

In the event of a collision, a special sensor sends a signal to the module, which, in turn, turns on the gas generator. In about a second, the device fills an empty bag with nitrogen, which unfolds towards the driver.

If you bought a used Priora, check for the airbag: press just below the center of the steering wheel. A soft-touch center means the cushion is in place.

Operating principle

The airbag of any car is a gas generator that is activated when a signal is received from the electronic control unit (ECU). The AirBag has a squib inserted into it. He is able to deploy a special bag and fill it with nitrogen in a matter of seconds. The control unit reads data from sensors that control the speed of movement, direction and force of impact. The airbag will not deploy at speeds below 20 km/h or at light impacts.

AirBag is a gas generator that inflates the bag with nitrogen based on a signal from the electronic control unit

How do Prior airbags work?

The essence of the action of the gas-generating element located in the pillow is as follows:

The gas generator itself will produce gas directly inside the module: it will fill the airbag.
Here, a substance of pyrotechnic origin will be ignited with the help of a fuse, which is built into the body of this gas generator itself.

There are two types of gas generators:

pyrotechnic;
hybrid.

The first will consist of a body that will be filled with a solid pyrotechnic substance and the igniter itself. As for the second, it will consist of a casing material containing compressed gas of inert origin, as well as all the components already listed above.

The gas generator will operate according to the following algorithm:

When struck, an electrical signal will be generated.
The electrical resistance will heat up and ignite the pyrotechnic substance.
The rest of the mass ignites.

What does the Priora steering wheel hide?

The main distinguishing feature of the Priora steering wheel is the presence of an airbag. That is, it has two electrical devices in its filling:

Horn switch.
Airbag kit.

Because of these difficulties, it was necessary to install a special drum with contact tape in it to turn on these devices.

Attention! Not all Prioras are equipped with an airbag, but in any case there is a cavity in the steering wheel for it.

Because of this feature of the Priora steering wheel, removing it requires great care.

Why change or remove it?

And the removal of the Priora steering wheel must be carried out for repair and maintenance of electrical components.

Removing and installing the steering wheel on a Lada Granta car

Let's consider removing the steering wheel with an airbag, since without an airbag, removing the steering wheel is not particularly difficult and is performed in the same way as on models 2108-2110.

To complete the job, you will need a special airbag remover and a new steering wheel nut.

If you don’t have a puller, you can make one from an old slotted screwdriver with a blade width of 5 mm; to do this, you need to make a small groove in the middle of the blade.

1. Remove the terminal from the negative terminal of the battery.

On a vehicle equipped with an airbag, to prevent the airbag from deploying, wait at least five minutes after disconnecting the battery before continuing to operate.

The driver's airbag is mounted on the steering wheel with two plastic hooks 2 and 4, Figure 1, 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 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 10).

And devices for removing pillows are used (Figure 11).

Place the removed airbag module with the actuator down and away from the workplace.

Set the front wheels of the car to the straight-ahead position.

Using a 24mm socket, unscrew the steering wheel mounting nut.

We mark the position of the steering wheel relative to the shaft, for which we use a core to put a mark on the shaft opposite the triangle mark on the steering wheel

We tighten the steering wheel fastening nut several turns in order to avoid injury when the steering wheel is suddenly released.

While rocking, pull the steering wheel towards you and remove it from the shaft splines

Unscrew the steering wheel fastening nut and block the drum device from turning

To do this, remove the blocking plate from the holder on the steering wheel

We insert the blocking plate through the hole in the steering wheel hub into the slot of the drum device until it stops

Steering wheel removal steps

So, as a rule, any work consists of certain stages. It is worth noting that this does not require special knowledge, only manual dexterity and accuracy are important. Now you need to start the actual procedure:

1. Disconnecting the wire from the negative terminal of the battery;
2. Installation of the steering wheel, the position of which will fully correspond to the movement of the car strictly in the forward direction;

After you have completed all the steps of removing the steering wheel, you probably realized that everything is actually simple and even a little funny, and most importantly, fast. As a rule, there is no need to warn you that before removing the steering wheel you need to prepare a new one. If you are new to this business, then know that the Priore comes with steering wheels of certain models, which means you must pay attention to this when choosing it.

How to remove the driver's airbag

Removing the driver's airbag is required in exceptional cases, and some of them are listed below:

removing the steering wheel
replacing an airbag after it has deployed
replacing electric power steering

If for any reason you need to remove the driver's airbag on a Priora, you will need the following tool for this repair.

5 mm hexagon
Thin screwdriver with flat blade

Procedure for replacing the driver's airbag on a Priora

Depending on the vehicle configuration, the Priora was equipped with either one or two airbags. This article will look at an example with a driver's AIRBAG.

Attention! Before performing any manipulations with the airbag, it is necessary to turn off the power to the car by disconnecting the battery terminal, and then wait at least 10 minutes. This is necessary so that the AirBag activator capacitor is completely discharged

Now you can start repairing. First of all, on the back of the steering wheel, you need to unscrew two 5 mm hexagon screws on both sides:

After which you can carefully lift the pillow up and move it slightly to the side.

Now we turn it over so that you can conveniently disconnect the power wires. Then, using a thin screwdriver, carefully pry up the pad retainer on both sides.

And we move the block away from the pillow, carefully lifting it up, as shown in the photo below.

Carefully, without sudden movements, remove the Priora pillow and put it aside. If necessary, we install a new one in its original place. If it was triggered, you will have to “reset” its control unit, or buy a new one. And only after that you can put the AirBag module in its place.

You should also be careful after installation. Reconnect the battery terminal

When you first turn on the ignition, you must do this in such a way that there is no person in front of the airbag (that is, you). This is necessary to avoid injury if it is triggered.

Video review on removing and installing the driver's airbag on the Lada Priora

To present this topic in the most clear and accessible way, you should familiarize yourself with the video review below, embedded from my channel.

priora-remont.ru

How to remove the steering wheel on a Priora? Step-by-step instruction

Do you want to know how to remove the steering wheel on a Priora yourself, without resorting to the services of a car service, and at the same time, without spending a lot of time and effort?
Many car enthusiasts prefer not to contact a car service center for any occasion (it’s expensive, or there’s simply no such option), but to resolve issues at home and themselves using improvised means. But drivers do not always have the knowledge to solve a particular issue. In such cases, it makes sense to seek advice from knowledgeable people who can easily help you solve absolutely any problem or find and read the necessary information on the Internet.

How to remove the steering wheel on a Priora? If you decide to replace your steering wheel, for example, with a sports steering wheel or want to install heating on it, you will need to remove it first. It is worth noting that all cars are different, which means that certain parts in each car can be disassembled differently, and besides, the disassembly process is different.

Removing seat belts with pretensioner

Unscrew the two screws securing the trim 1, Figure 15, of the rear door threshold, remove the trim.

Remove the trims and caps from the seat belt bolt heads.

Unscrew bolt 4, Figure 16, securing the belt branch 3 on the floor threshold.

Remove the lower trim 2 of the central pillar.

Disconnect block 1, Figure 17, from inertial coil gas generator 2.

Unscrew bolt 1, Figure 18, securing the seat belt bracket 2 on the central pillar.

Unscrew bolt 3, Figure 17, securing reel 2 and remove the front seat belt with the reel assembly.

Unscrew the bolt securing the front seat belt buckle to the seat bracket and remove the buckle.

Installing seat belts with pretensioner

Install seat belts in the reverse order of removal.

After opening the locks, seat belts must return from their working position to their original position freely without jamming.

Before installing the seat belts, remove the transport washers. The tightening torque of the seat belt bolts is from 18 to 32 Nm.

After completing work on removing/installing the components of the SNBP, connect the ground wire terminal to the battery.

When connecting the ground wire terminal to the battery, the ignition must be turned off. In this case, no one should be inside the car.

Check the functionality of the SNPB

For safety reasons, the first time you turn on the ignition on a vehicle with a replaced driver airbag module, proceed as follows:

— open the driver’s door;

— without sitting on the seat, with your right hand, placing it under the steering wheel, turn on the ignition, while the head of the specialist performing this operation should not be between the steering wheel and the driver’s seat.

After turning on the ignition, if there are no faults, the diagnostic indicator (orange symbol) should turn on for 3-4 seconds and turn off.

Turn off the ignition.

When removing/installing the steering wheel by pressing the switches located in the horizontal spokes of the steering wheel, make sure there is a sound signal.

What to watch if the steering wheel shakes

If the car is driving over bumps, and the steering wheel “kicks” while driving, there is no need to rush to the service station - self-diagnosis in many cases helps to identify the cause of the knocking. The most common reason for this is a malfunction in the steering mechanism.

Steering rods

When they wear out, they receive small scratches due to contact with sand, misfires occur in the operation of the steering rods - this is immediately felt, because play appears when the steering wheel is turned.

Steering rack

When the grooves of the steering rack are practically erased, they do not engage fully with the gear, and each turn vibrates into the multifunction steering wheel.

Steering column cardan

The steering gear mounting clamps must be well tightened.

Removing the MNPBP

Remove the glove box cover. Unscrew nuts 5, Figure 15, securing module 1 to bracket 3.

Through the opening of the glove box, alternately acting on the clamps 4 of the MNPBP facing cover, feeding from below, remove the MNPBP from the instrument panel.

Without putting tension on the wiring harness to the MNPBP, use a flat screwdriver to remove the latch from the L-shaped block attached to connector 6 of the MNPBP, then, without applying additional lateral forces, disconnect the L-shaped block from the module and remove the MNPBP module.

Place the non-activated NABP module on a flat surface with the facing cover facing up.

If you dismantle the triggered air conditioning module, check the serviceability of the wiring harness to the air conditioning module. If damage to the block to the air pressure control module, a break or short circuit of the wires to the air pressure control module is detected, replace the harness.

Installation of MNPBP

Before installing the MNPBP, visually verify that there are no mechanical damages and that there is a label with a bar code and identifying number on the module.

When installing a new NABP module, tear off part of the label with a barcode from the module and paste it into the “Special Notes” section of the service book, indicating the installation date and mileage of the vehicle, and the reason for replacement.

While in the car, bring the air conditioning air conditioning module to the installation location in the instrument panel, without applying lateral forces, insert the L-shaped block of the instrument panel wiring harness into connector 6 of the air conditioning air conditioning module until a characteristic locking click is obtained.

Insert the retainer into the L-shaped block until it clicks.

Before installing the clamp in the L-shaped block, the airbag module is in the transport position, the contacts of the igniter connector are bypassed.

Install the air pressure control module into the instrument panel and secure the air pressure control valve cover into the instrument panel. Screw and tighten nuts 5 securing the MNPBP to bracket 3. The tightening torque of the nuts securing the MNPBP is from 8 to 16 Nm (from 0.8 to 1.6 kgf.m).

Removal sequence

First you need to unscrew two screws on the back of the Priora steering wheel, which are located on both sides. To do this, you will need a 5 mm hexagon, while on both sides it is necessary to compress the spring clamps, preventing the pillow from falling out. It is important to remember that before starting work, you must remove the battery terminals to prevent the airbag from deploying.

After this, carefully remove the cushion from the front of the steering wheel. To do this, you need to carefully pry the clamp together with the wires and move it to the side, and also disconnect the power wires leading to the sound signal.

Please note that disassembling the airbag module is strictly prohibited.

Next, a pre-prepared 24-millimeter socket will come in handy, with the help of which the shaft nut is torn off; however, there is no need to unscrew it completely yet. At this stage, you need to somehow mark the position of the steering wheel, which will be needed for subsequent assembly to its original position. For this purpose, you can make appropriate marks on the casing or, in fact, on the steering wheel.

Once the nut has been loosened, you can begin to directly remove the steering wheel. To do this, you first need to gently tap it from the back with careful movements on both sides, but you should not use excessive force, because the steering wheel is still on the shaft. By progressively pushing the steering wheel, it is necessary to ensure that it is completely dislodged from the splines, and when this can be achieved, you can further unscrew the previously loosened nut.

Self-removal of the airbag for Priora

It is best to entrust the removal of the airbag to a specialist. However, there are some unforeseen situations that force you to act independently. In such cases, the following recommendations must be followed.

Usually the airbag is dismantled when the steering wheel is removed. Sometimes this is done when replacing the contact ring of the airbag itself and the sound signal.

The tool needed for the job will be a five-inch hex wrench.

The procedure for removing the pillow itself should follow the following sequence:

The steering wheel is set to a position where the car is moving in a straight line. This must be recorded, after which the key is removed from the ignition switch.
The fastening screw of such an airbag is unscrewed using the prepared tool. The same thing happens on the other side.
We move the module itself, in which this airbag is located, away from the steering wheel.
We remove the fasteners that hold the block with the wires.
We disconnect them.
We remove the pillow from the Prior.
During external interventions, we store this dismantled part with the cover facing up, making sure to protect it from excess moisture and heat.
We carry out all assembly work in reverse order.

Step-by-step instruction

1. On the inside of the steering wheel, unscrew the two airbag mounting screws.

The screws are located on the right and left of the inside of the steering wheel.

2. Pry up the airbag and disconnect the power connector from it.

In order to disconnect the power connector, you need to use a flat-head screwdriver to pry it up and remove the latch. After releasing the latch, remove the connector upwards.

3. Disconnect the power connector from the horn buttons. We squeeze the ears and disconnect the connector.

4. Place the steering wheel so that the wheels point straight and make a mark on the steering wheel relative to the steering column casing. This must be done in order to set the steering wheel to its previous position.

The mark can be made with a washable marker.

5. Unscrew the nut securing the steering wheel to the shaft using a twenty-four socket. Do not unscrew the nut completely.

After unscrewing the nut a little, we knock the steering wheel off the splines. This can be done by striking movements of the palms of the hands on both sides of the steering wheel.

After the steering wheel has come off the splines, unscrew the nut completely and remove the steering wheel.

6. When removing the steering wheel, thread the airbag and horn power wires through the hole.

7. Now a few words about reverse installation.

We thread the power supply wires for the pillow and the signal.

We put the steering wheel on the splines and do not forget to align the marks that you made.

8. Screw in and tighten the steering wheel mounting nut.

Tightening torque from 30-50 Nm.

9. Connect the signal power connector.

10. Take the airbag and connect the power connector. After connecting, close the latch.

11. Place the pillow in place and secure it with two screws on the back side.

Video lesson

Difficulties in replacement

Many users often have questions when replacing an old steering wheel with a new one. Here are the answers to the most common ones.

Question 1: Are mounts suitable for different models?

Answer: The mounts are identical, so the Priora 2 SE steering wheel is recommended for use on older models as well.

Question 2: I removed the steering wheel, but now I can’t put the new one back, it doesn’t work manually, what should I do?

Answer: If the part has been dismantled, then it can also be installed back. The steering wheel is installed by pressing your hands towards the shaft, without using tools like a hammer, but everything may not work out on the first try. There is no need to make sharp pushes of the steering wheel; a simple smooth press will be enough.

Question 3: Are additional components needed for the mechanism besides the steering wheel?

Answer: Yes, you still need to purchase a steering cable of the same model. Its installation is carried out similarly to the old version.

Question 4: The steering wheel is stuck after installation, what should I do?

Answer: Most likely, the steering cable is installed incorrectly. Disassemble the structure and reassemble it, adjusting the position of the cable in advance.

Replacing the steering wheel

The standard Priora steering wheel can be replaced with a new model from the Priora 2 SE luxury. The differences in feel are quite significant. The updated model is much more convenient to use, so it’s worth considering such a purchase if you have an old, battered steering wheel installed.

We will now figure out how to remove the steering wheel. To replace you will need the following set of tools:

Phillips and flat screwdriver;
hex key five;
replaceable head for 24 and 8;
ratchet.

Here's the procedure:

Disconnect the device from the battery by removing the terminal. We are waiting for the capacitor of the protective system to discharge.
We fix the steering wheel in the position for driving in a straight line.
Using a Phillips screwdriver, unscrew the fastenings of the steering wheel casing (7 pcs.), then remove it.
Next, you will need a hex wrench to unscrew the next 2 steering wheel airbag mounts.
Now we pull the pillow towards us, use a flat screwdriver to pry the device from the bottom on the other side and disconnect it.
Using a 24mm replaceable socket, loosen the fastening of the steering wheel to the shaft. The nut is strong, so you may have to work hard. Unscrew and remove the steering wheel.
The 8 socket is useful for removing the steering column cable and switches.

Steering wheel assembly

After the old steering wheel has been removed, we install a new model. Of course, you can limit yourself to general provisions: carry out the assembly in the reverse order. But there are several nuances that should not be missed.

We arm ourselves with the same tools and begin assembly.

We install the cable. Install it the same way as the old one, but do not push it all the way, otherwise the steering wheel will stick.
We install a new steering wheel. There should be a wire sticking out from the middle of the steering wheel from the control module and a safety latch that needs to be pulled out. Just pull the latch towards you and it will come out of the slot.
We connect the wire to the pillow, then to the cable.
We snap the new cushion into the steering wheel.
At the same time, we return all the fastenings to their places. The last thing to install is the casing.

If everything is installed correctly, the mechanism will not jam and will work fully properly for a very long time. The entire replacement process will take you about 40 minutes if you look at the instructions.

Photo report on removing the steering wheel yourself

First of all, read the material on removing the driver's airbag on a Priora. Then, when you have dealt with this, you can proceed further. Disconnect the power wires to the sound signal.

Then we put the head on 24 and rip off the nut, but don’t unscrew it completely yet. Before you start knocking it off the shaft, you need to mark the position of the steering wheel relative to the shaft - you can make marks on the steering wheel and casing.

When the nut is loosened, leave it on the shaft for now. Then we take and knock down the steering wheel from the reverse side, tapping it with medium force - on both sides.

When it comes off the splines, you can finally unscrew the nut and remove it from the shaft.

Carefully thread the horn power wires, as well as the airbag power wires, through a special hole.

And now the steering wheel is finally freed and you can remove it completely from the Priora.

If there is a need for replacement, then we perform it in the reverse order. Of course, the installation is carried out according to the marks that were originally set. The fastening nut must be tightened with a torque of 31 to 41 Nm. But you can take the average value and tighten it with a force of 40 Nm.

Cases when replacement of the SNPB is mandatory

Most system components are disposable and must be replaced in the following cases:

triggered as a result of an accident or other incident;
in cases of damage to the components of the airbag system;
after ten years from the date of production of the airbag modules and pre-tensioning device (the production date is marked on the module body).

Precautions and preparations

"Attention! Incorrect installation or dismantling of airbag components can lead to premature deployment of airbags and disruptions in the operation of the system as a whole. The results of mistakes made may be: damage to the life or health of the driver and passengers."

Important Recommendations:

When removing or installing a module containing an undeployed airbag, do not point its facing part towards the face or exposed parts of the body. If defects and damage are detected, do not attempt to carry out independent repairs or other mechanical manipulations;
Do not allow the product to fall or hit;
Do not allow contact with the product by persons who do not have special knowledge in the field of repair and operation of the SNCB.

Remember that the passenger airbag on the Priora is a disposable product, that is, after deployment it must be replaced.

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.

Standard steering wheel - size, article number and price

First, it’s worth making a reservation that not everyone likes to install new-style components in the pre-restyling Priora. It would be fair to mention the pre-restyling steering wheel. Its article number is 11190-3402012-00.

It is not sold in all stores, “showdowns” or secondhand, but you will have to hunt for a new option. Its cost without an airbag is about 2,000 rubles. With it, the price can increase from one thousand rubles.

The steering wheel on the restyled Priora received article number 2170-3402018-00, its cost starts from 3,800 rubles. Please note that this is an option with a plug that is installed instead of an airbag, not from the “luxury” configuration - with a silver insert. A similar “luxury” steering wheel comes with article number 21700-3402018-20, it costs 400 - 1500 rubles more. The price for a steering wheel with an airbag starts from 7,500 rubles, from official dealers – 12,000 rubles.

Full size: The steering wheel diameter on the Lada Priora is 410 mm. Don't be surprised when you see that it fits Kalina too - the cars are equipped with the same steering wheels.

VAZ 2170 | REPLACING THE PASSENGER AIR BAG

REPLACING THE PASSENGER AIR BAG

ATTENTION. Do not work with pyrotechnic systems (airbags and seat belt pretensioners) near heat sources or open flames: there is a risk of triggering

NOTE. On these vehicles, the electronic unit can be locked during repairs using the XR25 by issuing command G80* (ISO switch in position S8, code D49).

If this function is activated, all ignition lines are suppressed, the airbag warning light on the instrument panel lights up and bargraph 14 left of the XR25 is illuminated (new electronic units are delivered in this state).

After repair, a check must be carried out using the XR25.

If everything is normal, unlock the electronic unit by issuing command G81*.

REMOVAL

To remove the passenger airbag, the instrument panel must be removed (see “Removing and installing the instrument panel”, Chapter 83).

After this, the airbag is removed (four nuts).

ATTENTION. When the passenger airbag is deployed, the fastening elements are deformed and destroyed, so it is necessary to replace the dashboard each time

ATTENTION. Before disposing of a defunct airbag, it must be rendered harmless according to the procedure (see

Section “Decontamination procedure”: decontamination of a part removed from the vehicle)._

INSTALLATION

ATTENTION. NECESSARILY. Observe the safety precautions provided for installing or replacing a passenger airbag.

Any deviation from these recommendations may result in system malfunction or even danger for vehicle occupants._

Observe the safety precautions provided for installing or replacing a passenger airbag. Any deviation from these recommendations may result in system malfunction or even danger for vehicle occupants._

ATTENTION

Reassemble in the reverse order, being sure to observe the tightening torque of the four pillow mounting bolts (6 N m).

• Always replace the “No tampering” sticker with the blue after-sales sticker sold in kit no. 77 01 205 356.

• When assembling, do not forget in the compartment for

pillows of foreign objects (bolts, latches, etc.)._

ATTENTION

Before connecting the passenger airbag connector and replacing the instrument panel, you must check the system wiring.

Connect the igniter simulator (E1е. 1288) to the passenger airbag connector.

Connect the 30-pin XRBAG device adapter to the 30-pin orange connector of the electronics wiring.

Apply power to the XRBAG device (from the battery), connect the 2-pin white measurement connector to the adapter wiring (C): the device should show from 1.8 to 4.6 ohms.

If the measurement results are normal:

• Disconnect the igniter simulator.

• Connect the wiring to the passenger airbag igniter (close to the instrument panel) and reconnect the white 2-pin test connector of the XRBAG tester to the adapter wiring (C): the tester should read 1.8 to 4.6 ohms.

If the measurement results are normal:

• Reinstall the dashboard.

• Check with the XR25 that no system faults are being recorded.

• Unlock the electronic unit by issuing the G81* command.

• Check that the airbag warning light comes on for 3 seconds when the ignition is turned on, then goes off and remains off.

If the warning light does not work, how to

described above, or measured values

differ from those indicated above,

Refer to the “Diagnostics” chapter.

automn.ru

The main reasons for the malfunction of the steering column cable

In electrical engineering, a loop is understood as a bundle of conductors in general insulation. Otherwise known as ribbon cable. Such devices are well known to computer scientists.

A multi-core ribbon cable is well suited for transmitting signals from a device rotating along the axis of the steering column. In this case, the cable is wound on a special mini-coil. Initially, the loops transmitted signals directly from mini-switches mounted on the steering wheel, as well as to the airbag. Subsequently, an electronic device was installed on the steering wheel, which encrypts signals for transmission. This made it possible to increase reliability and reduce the number of failures.

However, technical problems associated with the failure of the loops remained. The main reasons for the unreliability of steering column cables:

1. Natural wear and tear

. Mechanical stress accumulates when bending the cable. Over time, this leads to a break in the conductors.

2. High current when airbags deploy

. From this point of view, airbag deception is especially dangerous. Typically this is a 2.2 ohm resistor. It does not instantly burn out like a pillow squib. A large current flows for a long time, which overheats the loop.

3. Corrosion

. Even a small amount of moisture that gets into the space under the steering wheel can cause corrosion of thin conductors at the soldering point of the cable.

4. Traffic accident

. Increased mechanical loads during an accident can lead to damage to the cable.