Description & Operation: Notes

WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all WARNINGS and SERVICE PRECAUTIONS .

The Supplemental Restraint System (SRS) is designed to work in conjunction with seat belts. SRS is a dual system consisting of driver-side and passenger-side air bags. SRS provides increased accident protection for driver and front passenger by deploying air bags in a front-end collision. The air bag(s) deploy in about 1/10th of a second after front impact sensors close.

System consists of an AIR BAG warning light, clockspring, driver-side air bag module, passenger-side air bag module and air bag control module (ACM) containing an impact sensor. See Fig 1 .

The ACM monitors system, stores fault codes (messages), and provides information to AIR BAG warning light and ACM data link connector. A fault code is stored when AIR BAG warning light is activated for more than 10 seconds.

An impact sensor is located inside of ACM. Impact sensor is an accelerometer that senses deceleration. When an impact is severe enough to require air bag protection, deceleration pulses are sent to a microprocessor located within the ACM. The ACM then sends a signal that completes the electrical circuit through driver and passenger-side air bags. This causes inflators to be actuated, producing a large quantity of nitrogen gas and inflating air bags.

Fig 1: Locating Restraint System Components

Courtesy of CHRYSLER CORP.