SEAT BELT WARNING SYSTEM SYSTEM DESCRIPTION

  1. SEAT BELT WARNING SYSTEM DESCRIPTION

    1. Seat belt warning light operation for driver seat belt:

      The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the driver seat belt state, vehicle speed, shift lever position and parking brake state.

    2. Seat belt warning light operation for front passenger seat belt:

      The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with whether the front passenger seat is occupied, the passenger seat belt state, vehicle speed, shift lever position and parking brake state.

    3. Seat belt warning buzzer:

      After turning the power switch on (IG), if the driver seat belt is not fastened within 1.8 seconds, check that the seat belt warning buzzer in the combination meter assembly sounds at 1.2 second intervals for 6 seconds.*1

      When the vehicle is driven at 20 km/h (12 mph) or more with the front passenger seat occupied and the driver or front passenger seat belt not fastened, the seat belt warning buzzer in the combination meter assembly sounds once.

      When 30 seconds have passed after the buzzer sounded, the seat belt warning buzzer in the combination meter assembly sounds at an interval of 1.2 seconds for 9.6*1 or 30*2 seconds.

      After that, the seat belt warning buzzer in the combination meter assembly sounds at an interval of 0.4 seconds for 20*1 or 90*2 seconds.

      • *1: w/ Daytime Running Light Control

      • *2: w/o Daytime Running Light Control

  2. FUNCTION OF MAIN COMPONENTS

    Component Function
    Front seat inner belt assembly LH Informs the airbag sensor assembly of the driver seat belt condition (fastened or unfastened).
    Front seat inner belt assembly RH Informs the occupant detection ECU of the front passenger seat belt condition (fastened or unfastened).
    Occupant classification sensor LH/RH Informs the occupant detection ECU of the front passenger seat condition (occupied or unoccupied).
    Occupant detection ECU Sends the front passenger seat belt buckle switch signal and occupant detection signal to the airbag sensor assembly.
    Airbag sensor assembly

    • Sends the driver seat belt buckle switch signal to the main body ECU (multiplex network body ECU) via CAN communication.

    • Sends the front passenger seat belt buckle switch signal to the combination meter assembly via CAN communication.
    Parking brake switch assembly Informs the main body ECU (multiplex network body ECU) of the parking brake condition.
    Main body ECU (multiplex network body ECU) Sends the driver seat belt buckle switch signal and parking brake switch signal to the combination meter assembly via CAN communication.
    Skidt control ECU Sends the vehicle speed signal to the combination meter assembly via CAN communication.
    Power management control ECU Sends the shift position signal to the combination meter assembly via CAN communication.