Freelander System Description and Operation
RESTRAINT SYSTEMS
75-8
DESCRIPTION AND OPERATION
Both airbag modules operate in the same way. On receipt of a fire signal from the airbag DCU, the igniter ignites the
material in the gas generator. The burning material rapidly produces a large amount of nitrogen gas which passes
through the filter screen into the airbag, forcing the airbag to unfold. On the driver's airbag module, the unfolding
airbag ruptures the cover along the split lines; on the passenger's airbag module, the unfolding airbag breaks the
deployment door fixings to the module housing and trim panel, and the deployment door lifts off the fascia (but remains
tethered to the module housing). Once free of the housing the airbag inflates to its full extent. Vents in the airbag
prevent excess pressure bursting the bag and, as soon as the material in the gas generator is exhausted, allows the
airbag to instantly deflate.
Driver's Airbag Module Components
1 Cover
2 Split lines
3 Electrical connector
4 Housing
5 Fixing