Toyota CH-R Service Manual: System Description

SYSTEM DESCRIPTION

SEAT BELT WARNING SYSTEM DESCRIPTION

(a) Seat belt warning light operation for driver seat belt:

The seat belt warning light on the combination meter assembly blinks or turns off in accordance with the driver seat belt state and vehicle speed.

(b) Seat belt warning light operation for front passenger seat belt:

The seat belt warning light on the combination meter assembly blinks or turns off in accordance with the whether the front passenger seat is occupied, the front passenger seat belt state or vehicle speed.

(c) Rear seat belt warning light:

The rear seat belt warning light on the clock assembly illuminates or turns off in accordance with the rear door state, vehicle speed and rear seat belt state.

(d) Seat belt warning buzzer:

When the vehicle is driven at 20 km/h (12 mph) or more with the front passenger seat occupied and the driver, front passenger or rear seat belt not fastened, the seat belt warning buzzer in the combination meter assembly will sound at an interval of 1.2 seconds for 30 seconds.

an interval of 0.4 seconds for 90 seconds.

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).

  • Front occupant classification sensor LH
  • Rear occupant classification sensor LH

Informs the occupant detection ECU of the front passenger seat condition (occupied or unoccupied).

Combination meter assembly

  • Blinks or turns off the seat belt warning light.
  • Illuminates or turns off the rear seat belt warning light.
  • Sounds the seat belt warning buzzer.
  • Rear seat inner with center belt assembly LH
  • Rear seat inner belt assembly RH

Informs the combination meter assembly of each rear seat belt condition (fastened or unfastened).

Rear door courtesy light switch assembly (LH/RH)

Informs the main body ECU (multiplex network body ECU) of the rear door condition (open or closed).

Clock assembly

The clock assembly illuminates, blinks or turns off the rear seat belt warning light.

Main body ECU (multiplex network body ECU)

Sends the rear door courtesy switch signal to the combination meter assembly via CAN communication.

Occupant detection ECU

Sends the front passenger seat belt buckle switch signal and occupant detection signal to the airbag sensor assembly via CAN communication.

Airbag sensor assembly

Sends the front passenger seat belt buckle switch signal and occupant detection signal to the combination meter assembly via CAN communication.

Skid control ECU (brake actuator assembly)

Sends the vehicle speed signal to the combination meter assembly via CAN communication.

ECM

Sends the shift position signal to the combination meter assembly via CAN communication.

    Precaution
    PRECAUTION IGNITION SWITCH EXPRESSIONS HINT: The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are u ...

    System Diagram
    SYSTEM DIAGRAM FRONT SEAT BELT WARNING Communication Table Sender Receiver Signal Communication Method Airbag sensor assembly ...

    Other materials:

    Toyota CH-R Service Manual > Occupant Classification System: Rear Occupant Classification Sensor LH Circuit Malfunction (B1782)
    DESCRIPTION The rear occupant classification sensor LH circuit consists of the occupant detection ECU and rear in weight detection sensor sub-assembly. DTC B1782 is stored when a malfunction is detected in the rear in weight detection sensor sub-assembly circuit. DTC No. ...

    Toyota CH-R Service Manual > Horn System: Data List / Active Test
    DATA LIST / ACTIVE TEST PERFORM ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered ...

    © 2017-2020 Copyright www.tochr.net
    0.0202