| danger | The SRS-ECU adopts the rollover specification that the curtain air bag and seat belt pre-tensioner operate at the occurrence of rollover. Therefore, do not tilt the vehicle to the right and left with the ignition switch turned to the "ON" position or tilt the SRS-ECU to the right and left with the ignition switch turned to the "ON" position and the harness installed. |
| warning | Improper service could result in serious injury of the service personnel or the passenger. |
The SRS* is designed to supplement the front seat belts. It reduces injury to the driver(s) and the front passenger(s) by deploying air bag(s) in case of a frontal collision. In addition, the side-airbag and curtain air bag inflate upon a side collision to reduce the risk of passenger injuries.
The SRS front air bags from an advanced air bag system together with sensors at the vehicle and sensors attached to front seats.
With the knee air bag system, when an impact exceeds the threshold upon a frontal collision, and the cushion air bag is instantaneously inflated for better protection of the driver.
Side-airbag systems in the front seats are activated when side impacts exceed a criteria to protect the occupants’ upper bodies.
The curtain air bag system operates together with the side-airbag to protect the heads of passengers in the front and second seats.
The seat belts with pre-tensioner work simultaneously with the SRS*. The seat belt incorporating the pre-tensioner automatically winds the seat belt upon front impact to reduce forward shifting of the driver’s and passenger’s. The seat belt use status is used to control the activation and deactivation of the pre-tensioner.
The SRS* consists of driver’s and passenger’s (front) air bag modules, knee air bag module, side-airbag modules, curtain air bag modules, SRS* air bag control unit (SRS-ECU), two front impact sensors, two side impact sensors, SRS* warning light, passenger’s air bag OFF indicator light, passenger’s seat belt warning light, clock spring, seat belt pre-tensioner, seat belt buckle switch, seat slide sensor, occupant classification sensor and occupant classification-ECU. Driver’s and passenger’s (front) air bag modules are located in the center of the steering wheel and above the glove box. The knee air bag module is installed to the instrument panel cover lower under the steering column. Side-airbags are located inside the front seatback frame. The curtain air bag module consists of an air bag, an inflator, and the fixing gear relating to those parts, and is installed in the roof side sections (from the driver's and the passenger's front pillars to the rear pillars). Each air bag consists of a folded air bag and an inflator unit. The SRS-ECU placed on the forefront of the floor monitors the system and has a front air bag analog G-sensor and a side-airbag analog G-sensor. The front impact sensor is assembled in the front end upper bar in the engine room to monitor impact in case of front impact. The side impact sensors inside the center pillars and rear panel monitor the shock incurred by the sides of the vehicle. The SRS* warning light on the combination meter indicates the operational status of the SRS*. The clock spring is installed in the steering column. The seat belt pre-tensioner is built into the driver's and passenger's front seat belt retractor. The seat slide sensor is attached to the slide adjuster on the driver's seat side. The occupant classification sensor is installed underneath a rail of the passenger seat to detect the load on the seat. The passenger’s air bag OFF indicator light is installed to the headlining, and illuminates when the passenger seat airbag is inactive. The passenger’s seat belt warning light is installed to the headlining, and illuminates when the passenger is not wearing the seat belt. The seat belt switch detects whether the seat belt is used.
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