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SRS System Description - Front Passenger's Weight Sensor
Overview
The front passenger's weight sensors for load detection are equipped inside the front passenger's seat. The SRS unit receives the load information from the weight sensors, performs an occupant judgment of the front passenger's seat, and adjusts the front passenger's airbag deployment and performance. In addition, there are two types of weight sensors, a two sensor type and a four sensor type. The HDS can determine which type is used. Operation
The weight of the front passenger's seat is detected by the weight sensors and sent to the SRS unit. If the weight is above a threshold level, front passenger's airbag operation is allowed, and if the weight is below a threshold level, the system will automatically turn the front passenger's airbag off. And the front passenger's airbag cutoff indicator turns on to inform the occupant that the front passenger's airbag will not deploy. NOTE: The front passenger's weight sensors measure only the weight that's actually on the seat cushion. They do not measure the weight of the front passenger's legs extending to the floor or arms resting on the armrests. A front seat passenger who weighs near the airbag's cutoff threshold may cause the airbag and indicator to turn on and off just by moving around in the seat and shifting the occupant weight. This may cause some occupants to believe there's something wrong with the airbag system when it is operating normally. Also, although the measured weight of the two sensor type differs by the seating state of the occupant, load detection by the weight sensors is performed accurately. Two Sensor Type
Four Sensor Type
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