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The SRS includes the steering wheel
airbag assembly, sensors in the
dashboard, and a control unit with
sensors behind the center console.
The system in the LS model also has
a dashboard-mounted airbag assem-
bly for the passenger.
The sensors are decelerometers, set
to trigger in a frontal impact that
generates more force than a 10 mile
per hour barrier crash. For the SRS
to activate, at least two sensors must
trigger. This duplication is to prevent
accidental activation.
When the control unit receives
trigger signals from at least two
sensors, it sends voltage to the
airbag. The control unit stores this
charge in capacitors to insure reliabil-
ity even if a severe impact damages
the car's battery or electrical connec-
tions.
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The electrical charge sent to the
airbag assembly ignites its propel-
lant, which burns instantaneously.
The gas produced by the burning
propellant inflates the airbag in about
40 milliseconds (1/25 of a second).
The airbag is vented so it stays
inflated for only an instant and does
not block the driver's vision. Smoke
from the burned propellant comes
out of the airbag and into the car's
interior. This is normal and does not
mean there is a fire. The airbag
collapses onto the driver's lap.
The airbag unit can inflate only one
time. After use, your Acura dealer
must check the complete Supplemen-
tal Restraint System and replace the
airbag assembly.
Supplemental Restraint System
To ensure long-term reliability, the
SRS uses gold-plated electrical
connections throughout. Exposed
components are sealed with epoxy.
The control unit monitors t h e SRS
circuitry whenever the ignition is
ON. If the control unit senses any
faults, it turns on the SRS indicator
light on the instrument panel. Take
the car to your Acura dealer to
diagnose and repair the system as
soon as possible.
The SRS needs no regular mainte-
nance other than an inspection by
your Acura dealer ten years after
manufacture.
Technical Information
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