OPERATIONS OF AIR BAG AND PRETENSIONER
When a strong frontal impact
occurs, seat belt pretensioners
rewind the seat belts immedi-
ately to restrain the occupants
to their seats. It helps the effec-
tive operation of the seat belts
and airbags.
The air bag does not inflate when:
• Rollover, side impact or rear impact
The air bag seldom inflates when:
• Oblique impact, rollover
• Weak impact in which the sensor is unable to detect (under
the inflation requirements)
• Impact against narrow objects such as a telegraph pole or
a tree
• The vehicle falls into a drainage or a puddle
• The front of the vehicle crashes into high impact point ve-
hicle such as a truck
• Impact on the hood by falling stones
• The air bag warning lamp is on
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Pretensioner
The pretensioner is a de-
vice that retracts the seat
belt to tighten the seat belt.
When a collision occurs,
the pretensioner detects
the stopping pressure and
tightens the belt before the
occupant is propelled forward.
This holds the occupant in
the seat more securely.
Air Bag Operation
The air bag inflates when:
• In response to a severe frontal impact, the driver's
and front passenger's air bags work together with
the seat belts to help preventing or reducing the
personal injuries.
The air bag can inflate when:
• Underbody impact from the road surface; impact
against the curb at a very high speed; dropping
impact onto the road surface with a large angle
SEAT BELT AND AIR BAG
2006-10-02, ¿ÀÀü 11:06
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