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; 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. When working on the airbag system, strict precautions must be taken to avoid injury to operating 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.
1. When removing the airbag module, as well as 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 one on top of the 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.