9.3.3 System Working Principle
9.3.3.1 System Working Principle
Front Seat Belt System
Front seat belt system includes the driver and passenger seat
belt pre-tensioner retractor, passenger recognition sensors, as
well as two front seats safety switches.
Passenger recognition sensor is used to detect whether the
passenger seat is occupied. If it is detected to be empty, the
passenger seat belt warning lamp will go off. Two front seat belt
switches are located in the seat locks for seat belt warning lamp
and buzzer control.
1. Driver Seat Belt Warning Lamp
When the ignition switch is at ON, if the driver seat belt is
not tightened, airbag control module detects the driver seat
belt status and send signals to the instrument cluster
through the CAN bus. Instrument cluster driver seat belt
warning lamp flashes and buzzer sounded 4 s to remind
driver to wear seatbelt.
2. Passenger Seat Belt Warning Lamp
When the ignition switch is at ON, the passenger
recognition sensor detects whether the passenger seat is
occupied and send signals to the airbag control module.
Airbag control module tests seat belt status and send a
signal to the instrument cluster, which sends a signal to
request to light or turn off the passenger seat belt warning
lamp.
Rear Seat Belt System
Rear seat belt system includes the following components:
–
The center rear seat belt retractor is located under the rear
shelf trim panel and is attached to the rear shelf body panel.
–
The center rear seat belt buckle and the outer seat belt
buckle are located in the center of the seat cushion and they
are attached to the rear oor pan.
Safety Protection Device
Pretension Seat Belt System
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EC718/EC718RV EC715/EC715RV 10/2009
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