DESCRIPTION
The front impact sensors (FIS) are installed in the side member. They are remote sensors that detect acceleration due to a collision at their mounting locations. The primary purpose of the Front Impact Sensor (FIS) is to provide an indication of a collition. The Front Impact Sensor(FIS) sends acceleration data to the SRSCM.
Scheme 48
The Side Impact Sensor (SIS) system consists of two front SIS which are installed inside the B-Pillar (LH and RH). They are remote sensors that detect acceleration due to collision at their mounting locations. The primary purpose of the Side Impact Sensor (SIS) is to provide an indication of a collision. The Side Impact Sensor (SIS) sends acceleration data to the SRSCM.
Scheme 49
The STPS operated via a non-contacting magnetic proximity sensing device combined with a simple electronic circuit resulting in the ability of producing two separate and distinct logic level signals.
The STPS output signal is altered by the proximity of a separate ferro-magnetic shunt, which is linked via the seat track. The logic signal produced is the result of the proximity device being activated or deactivated.
When the seat is in the forward position zone of the track, the sensor gives a low current (prohibit) signal. When the seat is in the rear positon zone of the track, it gives a high current (enable) signal.
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Scheme 51
- Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
- Remove the front seat assembly. (Refer to «SEATS»(ref-269623) )
- Loosen the two STPS screws, then remove the STPS after disconnecting the STPS connector.
The SRSCM shall monitor the status of the driver and front passenger seat belt buckle. The SRSCM provides one pin each for the driver and front passenger seat belt buckle status input. The seat belt buckle circuit operates from internal boost voltage supplied by the SRSCM, and uses chassis ground for the signal return. The buckle status shall modify the SRSCM deployment. If the buckle status is unbuckled, the corresponding pretensioner will be deactivated.
Scheme 52
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Scheme 54
- Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
- Remove the front seat assembly. (Refer to «SEATS»(ref-269623) )
- Remove the seat recliner cover.
- Loosen the seat belt buckle mounting bolt and remove the seat belt buckle switch.
In contrast to the initial one-stage airbag systems, newer restraint systems involve complex logic to select, or alternatively suppress, various levels of safety system deployment. Inherent to an Advanced Restraint System is the ability to discern information regarding passenger occupancy. It is intended that these inputs be provided through the OC system. The object of such safety system is to reduce the risk and level of injuries by automatically adapting the airbag(s) and seat belt pretensioner to the driving status of the vehicle, its occupants, and the crash severity. The current OC system covered in this specification continually senses and classifies the front passenger side seat.
