Circuit Operation

The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is on does the current flow from the ECU-IG fuse to TERMINAL (B) 6 of the center airbag sensor assembly, and the current flow from the AM2 fuse to TERMINAL (B) 5 of the center airbag sensor assembly via the ignition SW.
If an accident occurs while driving, when the frontal impact exceeds a set level, current from the ECU-IG or AM2 fuse flows to TERMINALS (B) 14, (B) 10, (A) 2and (C) 5 of the center airbag sensor assembly to TERMINAL 1 of the airbag squibs and the pretensioners to TERMINAL 2 to TERMINALS (B) 13, (B) 11(A) 1 and (C) 6 of the center airbag sensor assembly to TERMINAL (B) 27, (B) 28or BODY GROUND to GROUND, so that current flows to the airbag squibs and the pretensioners and causes them to operate.
The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.
The airbag stored inside the passenger's instrument panel is instantaneously expanded to soften the shock to the front passenger
The pretensioners make sure of the seat belt restrainability.