General Description

System Diagram:

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

1. DESCRIPTION OF SUPPLEMENTAL RESTRAINT SYSTEM

a. In this system, the airbag sensor assy center installed on the floor under the A/C unit determines whether or not to activate the SRS airbags (driver airbag, passenger airbag, side airbags and curtain shield airbags) and seat belt pretensioners by receiving the collision signal from each sensor (excluding the airbag sensor assy center).

The airbag sensor assy center controls the dual stage deployment of the driver airbag in the horn button assy and the passenger airbag on the instrument panel. The airbag sensor assy center controls the dual stage deployment of the driver airbag according to the collision impact, seat position and seat belt ON/OFF. It also controls the dual stage deployment of the passenger airbag according to the collision impact, seat belt ON/OFF and passenger occupant.

When there is trouble in the system, the airbag sensor assy center turns on the SRS warning light on the combination meter assy to inform the driver.

b. This airbag sensor assy center is operable using the check mode of the hand-held tester function. Check mode can sensitively output DTC by using a hand-held tester to switch the airbag sensor assy center to the check mode.

A simulation method is used, if the malfunction does not recur during troubleshooting (the malfunction is temporarily solved, etc.). In this case, juggling each connector, or driving in the city or on a rough road with the airbag sensor assy center in check mode makes it possible to obtain a more accurate malfunction condition.

2. DESCRIPTION OF OCCUPANT CLASSIFICATION SYSTEM

a. In this system, occupant status is judged by the four occupant classification sensors installed on the passenger's seat frame and seat belt ON/OFF condition. In addition, the occupant classification ECU judges if the occupant is and adult or child and controls the deployment of the front passenger airbag assy and the passenger side airbag (front seat airbag assy RH).

Deployment condition is indicated by the passenger occupant classification indicator. When there is trouble in the system, both the SRS warning light on the combination meter assy and the passenger airbag ON/OFF indicator light ("OFF") on the heater control housing sub-assy come on, via the airbag sensor assy center, to inform the driver of the trouble.