How does the side air-curtain system work?
The design and development of the side air curtain system included recommended testing procedures that were developed by a group of automotive safety experts known as the Side Airbag Technical Working Group. These recommended testing procedures help reduce the risk of injuries related to the deployment of side airbags (including side air curtain systems).
The side air curtain system consists of the following:
• An inflatable curtain with a gas generator concealed behind the headliner and above the doors.
• The headliner will flex to open above the side doors to allow air curtain deployment.
• The same warning light, electronic control and diagnostic unit as used for the front airbags.
• Two crash sensors located under the outboard side of the front seats, attached near the floor.
• Two crash sensors located at the base of the “C” pillars above the wheel house.
Side air curtains and side airbags, in combination with safety belts, can help reduce the risk of severe injuries in the event of a significant side impact collision.
Children 12 years old and under should always be properly restrained in the rear seats. The side air curtain will not interfere with children restrained using a properly installed child or booster seat because it is designed to inflate downward from the headliner above the doors along the side window openings.
The side air curtains are mounted to the sheet metal above the first and second row seats. In certain lateral collisions, the air curtain and seat-mounted side airbag on the side affected by the collision will be inflated, except that the passenger sensing system will deactivate the passenger seat-mounted side airbag if it detects an empty unbuckled passenger seat or an unbuckled child or small person in the passenger seat. The air curtain was designed to inflate between the side window area and occupant to further enhance the protection provided to occupants in side impact collisions. The seat-mounted side airbag was designed to inflate between the door panel and occupant to further enhance the protection provided occupants in side impact collisions.
The side air curtain system SRS is designed to activate when the vehicle sustains lateral deceleration sufficient to cause the sensors to close an electrical circuit that initiates air curtain and seat-mounted side airbag inflation.
The fact that the side air curtain and seat-mounted side airbag did not inflate in a collision does not mean that something is wrong with the system. Rather, it means the forces were not of the type sufficient to cause activation. The side air curtain system is designed to inflate in side impact collisions, not roll-over, rear impact, frontal or near-frontal collisions, unless the collision causes sufficient lateral deceleration.
WARNING: Several air bag system components get hot after inflation. Do not touch them after inflation.
WARNING: If the side air curtain has deployed, the air curtain will not function again. The side air curtain system (including the A, B and C pillar trim and headliner) must be inspected and serviced by an authorized dealer. If the air curtain is not replaced, the unrepaired area will increase the risk of injury in a collision.
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