9-3 Coupe (9400) L4-2.0L Turbo (B204) (1999)
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Air Bag: Description and Operation
Air Bag, Passenger
Passenger Airbag
The passenger airbag is offered as a factory-fitted option and is installed in the dashboard above the glove box on the passenger side. The passenger
airbag is connected to pins 3 and 4 on the control module.
The cable carries test and detonation current from the SRS control module to the passenger airbag.
The passenger airbag, which has a volume of about 135 litres, incorporates a gas generator. The gas generator is screwed to the airbag casing which is
screwed in its turn to the dashboard. The airbag is held in place by a plastic cover with fracture lines. The dashboard has corresponding fracture lines.
Passenger airbag gas generator
Passenger Airbag Gas Generator
The gas generator consists of a steel housing, electric detonator, explosive charge and filter.
On receiving an activation command, the control module sends a current pulse to the detonator which ignites the explosive charge.
On combustion, this explosive charge generates a gas. The filter cools the gas and removes particles from it before it passes into the airbag.
