System Outline

The SRS is a driver protection device which has a supplemental role to the seat belts.

When the ignition SW is turned to ACC or ON current from the CIG fuse flows to TERMINAL 4 of the short connector (SRS) to the short connector (SRS) to TERMINAL 4 to TERMINAL 16 of the center airbag sensor assembly. Only when the ignition SW is on does the current from the IGN fuse to TERMINAL 3 of the short connector (SRS) to the short connector (SRS) to TERMINAL 3 to TERMINAL 15 of the center airbag sensor assembly.

If an accident occurs while driving, deceleration caused by a frontal impact is detected by each sensor and switch.

And when the frontal impact exceeds a set level (when the sating sensor built into the center airbag sensor assembly is ON and the center airbag sensor is ON, front airbag sensors are OFF) current from the CIG or IGN fuse flows to TERMINAL 7 of the center airbag sensor assembly to TERMINAL 1 of the airbag squib (Steering wheel pad) to the squib to TERMINAL 2 to TERMINAL 6 of the center airbag sensor assembly to TERMINALS 9,10 or BODY GROUND to GROUND.

When the safing sensor built into the center airbag sensor assembly is on and the front airbag sensor LH or RH is ON, center airbag sensor is OFF and current from the CIG or IGN fuse flows to TERMINAL 7 of the center airbag sensor assembly to TERMINAL 1 of the airbag squib (Steering wheel pad) to squib to TERMINAL 2 to TERMINAL 6 of the center airbag sensor assembly to TERMINAL 9,10 or BODY GROUND to GROUND. When the safing sensor built into the center airbag sensor assembly is on, and the front airbag sensor LH or RH is ON and center airbag sensor is ON one of the above-mentioned circuits is activated so heat current flows to the airbag squib and causes it to operate.

The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.