1. Driver airbag (DAB)
2. Steering wheel
3. Contact disk
4. Seat belt pretensioner (ART)
5. Passenger airbag switch (RAV)
6. Side impact sensor (SIS)
7. Side airbag (SAB)
8. Passenger airbag (RAV)
9. Front impact sensor (FIS)
10. Curtain air curtain (CAB)
11. The control unit of the passive safety system (SRSCM)
12. Airbag warning lamp
13. Passenger airbag on/off lamp (RAV)
14. Anchor tensioner
The airbag system provides driver and passenger protection in addition to the seat belt action to reduce the risk and severity of injury by deploying and inflating the driver and passenger airbags, side airbags, and seat belt pretensioners in certain types of frontal or side blows.
The system includes: a driver airbag module located in the steering wheel hub and consisting of a folded airbag shell and an inflator; a passenger airbag module located in the dashboard on the passenger side and consisting of a folded airbag shell and an inflator; side airbag modules located in the back of the driver's and passenger's seats and consisting of a folded airbag shell and an inflator; side curtain airbag modules, located in the side parts of the ceiling and consisting of a folded airbag shell and a gas generator; electronic control unit (ECU), installed in the center console and controlling the system; an accelerometer that measures the negative acceleration of the car; spring connector (contact disk), located in the steering column; system wiring and connectors; padded knee protection under the steering column. The function of determining the impact force is provided by the ECU using an electronic accelerometer, which constantly measures the amount of vehicle acceleration and outputs the appropriate signal to the microprocessor through the amplifying and filtering circuits. The airbag deploys in the event of a moderate to severe frontal or near-frontal side impact.
Only specially trained personnel are allowed to work on the airbag system. Therefore, the production of such work should be preceded by a careful study of this manual. Strict precautions must be taken when working on the airbag system in order to prevent injury to personnel (in case of accidental airbag deployment) or driver (due to airbag failure).
Driver Airbag Module (PMB), passenger airbags (PBP), includes the airbag itself and the gas generator. The gas generator is made in the form of a squib with an igniter. In the event of a frontal or side impact of sufficient force, causing the ECU sensor contacts to close, current is supplied to the ignition circuit, as a result of which the squib ignites and the airbag is filled with gas.
Attention.
1. When removing the airbag module, and when handling a new airbag module, place the module with the outer facing up. In this case, the lever of the double clamp of the airbag module wire connector must be in the locked position, and it must be placed so as not to damage the connector. Do not store steering wheel covers stacked on top of each other. (Storing facings with the metal part up can lead to an accident if the airbag is accidentally deployed).
2. It is forbidden to check the resistance at the terminals of the igniter (this can cause the airbag to deploy, which is extremely dangerous).
3. Store the airbag module at a temperature not exceeding 93°C in normal humidity and without electrical interference.
4. Before performing electric welding work, it is necessary to disconnect the airbag wire connector located under the steering column next to the steering column switch block connector.
Precautionary measures
1. It is allowed to start work on the airbag at least 3 minutes after turning the ignition key to the OFF position (turned off) and disconnect the wire from the negative terminal («-») battery, except when performing a wiring check.
Note: The information contained in the memory is not erased when the ignition is turned off and when the wires are disconnected from the battery.
2. When replacing factory installed parts, use only original and high quality parts.
Do not use airbag parts taken from another vehicle. Replace parts with new ones.
3. Carefully check all elements of the SRS before installing them. If any of the components of the airbag system fall or if cracks, dents, or other defects appear on the module case, bracket, or wire connector, replace them with new ones.
4. Before removing any parts of the passive safety system, always disconnect the SRS connector.
5. Do not attempt to disassemble airbag modules as they do not have serviceable parts. Once deployed, an airbag cannot be repaired and reused.
When storing airbags, observe the following:
Store the removed airbag with the outer facing up.
Do not expose the airbag modules to water or other liquids, as this may damage them.
Keep the airbag module away from heat sources.
Do not perform airbag wiring tests such as resistance measurements.
During repairs, inspections or replacements, position yourself so that you are not in the area of the airbags.
Avoid possible impacts on the passive safety system module, as well as in the area of the location of the collision sensors, with the ignition on. Switch off the ignition and wait three minutes before doing any work on the SRS.
During work, be careful not to make an accidental impact (when using wrenches, a hammer and other tools) in the area of the SRS module and crash sensors, as this may cause the airbags to inadvertently deploy and cause injury or damage.
After an accident in which the front airbags deployed, replace the airbags and the SRS control unit (SRS). After a collision with side airbags deployed, replace the side airbag, front and side impact sensors on the desired side, and the SRS control unit (SRS). After a collision with the front or side airbags not deploying, check the SRS control unit for damage or deformation (SRS) and side impact sensors. If there is no damage, replace the SRS control unit (SRS), front and/or side impact sensor.
Do not disassemble the SRS control module, front and side crash sensors.
Switch off the ignition, disconnect the negative battery terminal and wait three minutes before starting installation or replacing the SRS control unit (SRS).
Check that there is no liquid or oil on the surface of the SRS control unit (SRS), front and side collision sensors, and clean them of dust.
Store the SRS control unit (SRS), front and side impact sensors at 15-25°C and 30-80% relative humidity.