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Knowing your vehicle
Air bag system components
The main components of your SRS
are:
• To indicate that your vehicle is
equipped with air bags, the corre-
sponding air bag covers are
marked with “SRS AIR BAG”.
- Driver’s air bag
- Passenger’s air bag
- Side air bag
- Curtain air bag
• A diagnostic system that continual-
ly monitors the system operation.
• An indicator light to warn you of a
possible problem with the system.
• Emergency power backup in case
your car’s electrical system is dis-
connected in a crash.
The SRS uses a collection of sen-
sors to gather information about the
driver’s and front passenger’s seat
position, the driver’s and front pas-
senger’s safety belt usage and
impact severity.
The driver’s and front passenger’s
seat position sensors, which are
installed on the seat track, determine
if the seats are fore or aft of a refer-
ence position. Similarly, the safety
belt usage sensors determine if the
driver and front passenger’s safety
belts are fastened. These sensors
provide the ability to control the SRS
deployment based on how close the
driver’s seat is to the steering wheel,
how close the passenger’s seat is to
the instrument panel, whether or not
the safety belts are fastened, and
how severe is the impact.
The advanced SRS offers the ability
to control the air bag inflation with
two levels. A first stage level is pro-
vided for moderate-severity impacts.
A second stage level is provided for
more severe impacts.
The SRSCM (SRS Control Module)
controls the air bag inflation in accor-
dance with impact severity, seating
position and safety belt usage.
Additionally, your SRS is equipped
with an occupant classification sys-
tem in the front passenger’s seat.
The occupant classification system
detects the presence of a passenger
in the front passenger’s seat and will
turn off the front passenger’s air bag
under certain conditions. For more
detail, see “Occupant Classification
System” later in this section.
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