Air Bag: Description and Operation

Function
The SRS front airbag is provided as an auxiliary driver and passenger front seat restraint system to be used in combination with the seat belt. When an impact greater than a set level is applied to the front of the vehicle, the sensor senses it and generates an electrical pulse to inflate the bag in the airbag module, thus preventing the upper bodies of the driver and passenger in the front seat from impacting the steering wheel, instrument panel and windshield.

Construction




GENERAL
- The SRS airbag consists of an airbag control module, left and right front sub sensors, electric sensor and safety sensor built into the control module, airbag modules of driver and passenger containing an inflator and airbag.

- FRONT AIRBAG SYSTEM:
A frontal impact causes the safety sensor, electric sensor and front sub sensor to input an impact signal to the CPU. The CPU judges whether the airbags should be inflated or not based on these input signal values.




AIRBAG MODULE
The driver's airbag module is located at the center of the steering wheel, and passenger's airbag module is located at upper side of instrument panel, and it each contains an airbag and inflator. If a collision occurs, the inflator produces a large volume of gas inflating the airbag in a very short time.

AIRBAG CONNECTOR

1. DESCRIPTION
The SRS airbag adopts a connector which has a double lock mechanism and coupling error detection mechanism for enhanced reliability. If coupling is incomplete, the airbag warning light comes on in the combination meter.




2. DISCONNECTION (HARNESS TO HARNESS)




3. DISCONNECTION (FRONT SUB SENSOR)




AIRBAG WARNING LIGHT
The airbag warning light is located inside the combination meter. It illuminates if a poor connection occurs, or if the airbag control module detects an abnormality, When the airbag system is normal, this light goes out about 7 seconds after turning the ignition switch ON.