Toyota CH-R Service Manual: System Diagram


Communication Table

Transmitting ECU


Receiving ECU


Communication Method

Airbag Sensor Assembly

Occupant Detection ECU

  • Crash detection signal
  • Acceleration signal
  • Sensor power supply signal
  • Sensor failure signal
  • Sensor Type signal


Skid Control ECU (Brake Actuator Assembly)

Occupant Detection ECU

  • Vehicle speed signal
  • G sensor signal
  • G sensor zero point error signal

Occupant Detection ECU

Airbag Sensor Assembly

  • Occupant classification system failure signal
  • Occupant classification system zero point error signal
  • Occupant state for passenger signal
  • Buckle switch state of passenger signal
    PRECAUTION GENERAL PRECAUTION (a) The following conditions may be interpreted as a malfunction even though they are normal operation: An object is placed on the passenger seat and the syst ...

    How To Proceed With Troubleshooting
    CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the occupant classification system. *: Use the Techstream. PROCEDURE 1. VEHIC ...

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