Some vehicles are equipped with an air bag system. The system must be disarmed before performing service on, or around, system components, the steering column, instrument panel components, wiring and sensors. Failure to follow the safety precautions and the disarming procedure could result in accidental air bag deployment, possible injury and unnecessary system repairs.
The Supplemental Inflatable Restraint (SIR) system (also called the air bag system) helps supplement the protection offered by the driver and front passenger seat belts by deploying an air bag from the center of the steering wheel and from the top of the right side of the instrument panel.
The air bag deploys when the vehicle is involved in a frontal crash of sufficient force up to 30 degrees off the centerline of the vehicle. To further absorb the crash energy there is a knee bolster located beneath the instrument panel for both the driver and the passenger, and the steering column is collapsible.
Beginning in 2000, side impact air bags were introduced on selected models. The side impact air bag system consists of the following additional components that interface with the inflatable restraint Sensing and Diagnostic Module (SDM):
An inflatable restraint Side Impact Sensor (SIS) inside the driver side B-pillar (also called the door post).
An inflatable restraint front side impact module in the driver's seat.
Fig. SIR system "deployment window"
Fig. The SIR system components, when used with a seat belt/shoulder harness, can provide additional protection during an accident
Fig. Introduced on some 2000 vehicles, the side impact air bags are designed to further enhance the effectiveness of the vehicle's air bag system