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Home >> Scion >> 2009 >> xD Standard >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt >> Seat Belt Warning System >> System Description

System Description

  1. SEAT BELT WARNING SYSTEM DESCRIPTION 

    If a seat belt is not fastened, this system flashes the seat belt warning light or sounds the seat belt warning buzzer as a reminder.

    1. Seat belt warning light (for driver side):

      When the driver seat belt is not fastened with the ignition switch ON, the driver seat belt warning light on the combination meter blinks to inform the driver. The center airbag sensor detects the driver seat belt status and sends signals to the meter ECU using CAN.

    2. Passenger seat belt warning light (for front passenger side):

      When the passenger seat belt is not fastened with the ignition switch ON and the passenger seat occupied, the passenger seat belt warning light on the passenger seat belt warning light assembly blinks. The meter ECU displays the passenger seat belt status and whether the passenger seat is occupied.

    3. Seat belt warning buzzer:
      1. When the ignition switch is turned to ON while the driver seat belt is not fastened, the seat belt warning buzzer in the combination meter sounds at an interval of 1.2 seconds 5 times.
      2. When the vehicle is driven at approximately 20 km/h (12 mph) or more while the driver or front passenger seat belt is not fastened, the buzzer sounds at an interval of 1.2 seconds for 9.6 seconds, and then the buzzer sounds at an interval of 0.4 seconds for 20 seconds.
  2. FUNCTION OF MAIN COMPONENTS 

    The following functions are available.

    FUNCTION OF MAIN COMPONENTS

    Components Function
    Front seat inner belt LH (driver side buckle switch) Informs center airbag sensor of driver seat belt condition (fastened or unfastened)
    Front seat inner belt RH (passenger side buckle switch) Informs center airbag sensor of front passenger seat belt condition (fastened or unfastened)
    Occupant classification sensor Informs center airbag sensor of front passenger seat condition (occupied or unoccupied)
    Driver seat belt warning light If driver seat belt is unfastened and ignition switch is ON, meter ECU flashes seat belt warning light of combination meter as reminder.
    Front passenger seat belt warning light When front passenger seat is occupied and ignition switch is ON, if passenger seat belt is unfastened, meter ECU flashes seat belt warning light on passenger seat belt warning light assembly as reminder
    Seat belt warning buzzer If driver or passenger seat belt is unfastened and ignition switch is ON, meter ECU sounds buzzer as reminder
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