Description & Operation: Notes
The Supplemental Restraint System (SRS) is designed to provide increased accident protection for the driver by deploying air bag in a front-end collision. The air bag, stored in center of steering wheel, deploys in approximately 40 milliseconds after the impact sensors close. The air bag system is designed to be used with the 3-point safety belts.
During a front-end collision, the impact sensor(s) internal balls are thrown forward. The balls complete an electrical circuit and ignite the inflator to deploy air bag. At least 2 sensors, one safing sensor and one front impact sensor, must activate simultaneously to inflate air bag.
The SRS includes the following major components: diagnostic monitor, driver-side air bag module, air bag system readiness light (AIR BAG warning light), impact and safing sensors, ignitor assembly (in air bag module), air bag sliding contact (clockspring), and associated wiring harnesses. See Fig 1 .