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02-14
2) Front Air Bag System Operating Process
(1) Front air bag system deployment conditions
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The air bag will be deployed when:
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the impact or type of a frontal collision is too much for the seat belt to protect the occupant.
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The air bag can be deployed when:
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there is underbody impact from the road surface, impact against the curb at a very high speed, or
dropping impact onto the road surface with a large angle.
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The air bag will not be deployed when:
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the vehicle rolls over or tips over sideward, or a side/rear collision occurs.
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the impact of the collision is low enough for the seat belt to protect the occupant properly.
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The air bag will be hardly deployed when:
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a collision to diagonal direction (not a frontal collision) occurs or the vehicle tips over.
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a minor collision which the air bag sensor cannot detect occurs (impact is lower than that of
operating condition).
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a collision against narrow objects, such as a telegraph pole or a tree, occurs.
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the vehicle goes into a drainage or a puddle.
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the vehicle wedges under a truck or a trailer or collides with the underbody of a heavy-duty
vehicle.
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the hood is hit by falling stones.
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the air bag warning lamp is on.
(2) Front air bag system deployment
When a collision occurs the air bag unit receives the signal from the front impact sensor and ignites the
front air bag to deploy the driver and passenger air bags and seat belt pretensioner.
Item
Driver air bag
Passenger air bag
Seat belt pretensioner - Driver side
Seat belt pretensioner - Passenger side
(3) Component change after deployment
Air bag unit and its wirings (including connectors), seat belt pretensioner and its wirings (including
connectors), all front air bags, instrument panel, front impact sensor and other damaged components
Impact to (front)
Ignite
Ignite
Ignite
Ignite
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Troubleshooting
