Air Bag Systems: Description and Operation

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: SYSTEM DIAGRAM


















SYSTEM DESCRIPTION

1. GENERAL

(a) G sensors used for the airbag system are installed on various parts on the vehicle and calculate the deceleration rate of each part during a collision.

(b) Depending on the situation, the center airbag sensor assembly sends a deployment signal to each airbag based on the information from each sensor.

2. DEPLOYMENT CONDITION

(a) FRONTAL COLLISION





(1) Frontal collision signals are produced based on the information from the center airbag sensor assembly and front airbag sensors.

HINT
*: In case of a frontal collision, the ignition signal could be output with the deceleration sensor ON signal even without a signal from the front airbag sensor.

(2) Frontal collision signals are used to deploy the airbags except the side airbags and curtain shield airbags.

(b) SIDE COLLISION (1)





(1) The front seat airbags are deployed based on signals from the side airbag sensors and center airbag sensor assembly.

HINT
The curtain shield airbags are deployed at the same time.

(c) SIDE COLLISION (2)





(1) The curtain shield airbags are deployed when both of the following conditions are met:

* Signals from the side airbag sensors or rear airbag sensors are received.

* A signal from the center airbag sensor assembly is received.

(d) ROLLOVER

(1) The vehicle is equipped with a function to activate the SRS in case of vehicle rollover. A circuit to detect vehicle rollover is built into the center airbag sensor assembly. When the conditions for vehicle rollover are met, the SRS is activated as shown in the illustration below.