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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (2 Of 4) >> Electronically Controlled Brake System >> DTC C124F-62: Yaw Rate Sensor Signal Compare Failure [11/2020 - ] >> Procedure

DTC C124F-62: Yaw Rate Sensor Signal Compare Failure [11/2020 - ]: Procedure

  1. READ VALUE USING GTS (YAW RATE SENSOR) 

    Pre-procedure1

    • Perform a road test.
    • Check the yaw rate sensor output value displayed on the GTS.

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Yaw Rate Sensor Value Yaw rate sensor Min.: -128°/s
      Max.: 127°/s
      Vehicle stopped: 0°/s
      Turning right: -128 to 0°/s
      Turning left: 0 to 127°/s
      -

      Chassis > Brake/EPB > Data List 

      Tester Display
      Yaw Rate Sensor Value

      Result

      Result Proceed to
      NG (The yaw rate sensor output value is 0°/s when the vehicle is stationary, but the value fluctuates when turning.) A
      NG (The yaw rate sensor output value is not 0°/s when the vehicle is stationary.) B
      OK C

    Post-procedure1

    • None

    Result: 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

    Result: 

    See step  2

  2. CHECK AIRBAG ECU ASSEMBLY INSTALLATION 

    Pre-procedure1

    • Turn the ignition switch off.

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    INSTALL AIRBAG ECU ASSEMBLY. Refer to  INSTALLATION [11/2020 - 12/2022]  , or refer to  INSTALLATION [12/2022 - 12/2023]  , or refer to  INSTALLATION [12/2023 - ]