Supplementary restraints system
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Supplementary restraints system
PRINCIPLE OF OPERATION
Introduction
In the event of a collision the airbag control unit
monitors the rate of deceleration caused by the
collision. This information is then used to
determine whether airbags should be
deployed.
Airbag deployment is dependent on the rate at
which the passenger compartment changes
speed following the collision. The
circumstances affecting different collisions
(vehicle speed, angle of impact, type and size
of object hit, etc) vary considerably, and will
affect the rate of deceleration accordingly.
The Supplementary Restraint System (SRS)
components include :-
• SRS warning indicator.
• Rotary coupler.
• Airbag modules.
• Seat belt pre-tensioners.
• Airbag diagnostic control unit.
• Crash sensors.
• Airbag wiring harnesses.
• Seat occupancy sensor.
Note: The SRS is not designed to operate as a
result of:
• Rear impacts.
• Minor front impacts.
• Minor side impacts.
• Heavy braking.
• Driving over bumps and pot holes.
Therefore, it follows that considerable
superficial damage to the vehicle can occur
without causing the airbags to deploy.