Toyota 86 Owner's Manual page 86

1-7. Safety information
The SRS airbag can function only when the engine switch is in the "ON"
position (vehicles without a smart entry & start system) or when the
"ENGINE START STOP" switch is in IGNITION ON mode (vehicles with a
smart entry & start system).
If the front sub sensors located on both the right and left sides at the front of
the vehicle and the impact sensors in the airbag control module detect a cer-
tain predetermined amount of force during a front collision, the control mod-
ule sends signals to the front airbag modules instructing them to inflate the
SRS front airbags. Then both airbag modules produce gas, which instantly
inflates driver's and passenger's SRS front airbags. The knee airbag is also
inflated in combination with the SRS front airbags.
After deployment, the SRS airbags immediately start to deflate so that the
driver's vision is not obstructed. The time required from detecting impact to
the deflation of the SRS airbag after deployment is shorter than the blink of
an eye.
Although it is highly unlikely that the SRS airbag would activate in a non-
accident situation, should it occur, the SRS airbag will deflate quickly, not
obscuring vision and will not interfere with the driver's ability to maintain con-
trol of the vehicle.
When the SRS airbag deploys, a sudden, fairly loud inflation noise will be
heard and some smoke will be released. These occurrences are normal
result of the deployment. This smoke does not indicate a fire in the vehicle.
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