Toyota Lexusc Owner's Handbook Manual page 226

OCCUPANT RESTRAINT SYSTEMS
"
1 Curtain shield airbag modules (airbag and inflater)
2 Side airbag modules (airbag and inflator)
Front passenger occupant classification system
3
(ECU and sensors)
4 "AIRBAG OFF" indicator light
5 SRS warning light
Curtain shield airbag sensor assemblies
6
7 Side and curtain shield airbag sensor assemblies
8 Airbag sensor assembly
9 Front passenger's seat belt buckle switch
The SRS side airbag and curtain shield airbag system consists
mainly of the above components, and their locations are shown
in the illustration.
The SRS side airbag and curtain shield airbag system is
controlled by the airbag sensor assembly. The airbag sensor
assembly consists of a safing sensor and airbag sensor.
In a severe side impact, the side and curtain shield airbag
sensor and/or the curtain shield airbag sensor trigger(s) the
side airbag inflators and/or the curtain shield airbag inflators.
At this time a chemical reaction in the inflators quickly fills the
airbags with non-toxic gas to help restrain the lateral motion
of the occupants.
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