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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Electronically Controlled Brake System (Diagnostic Codes) (3 Of 4) (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1436: Malfunction in Yaw Rate Sensor [10/2018 - ] >> Procedure

DTC C1436: Malfunction in Yaw Rate Sensor [10/2018 - ]: Procedure

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  1. READ VALUE USING TECHSTREAM (YAW RATE SENSOR AND YAW RATE SENSOR2) 
    1. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [10/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Yaw Rate Sensor Yaw rate sensor 1 Min.: -128 degrees/s, Max.: 127 degrees/s Vehicle stationary: 0 degrees/s
      Turning right: -128 to 0 degrees/s
      Turning left: 0 to 127 degrees/s      		 -
      Yaw Rate Sensor2 Yaw rate sensor 2 Min.: -128 degrees/s, Max.: 127 degrees/s Vehicle stationary: 0 degrees/s
      Turning right: -128 to 0 degrees/s
      Turning left: 0 to 127 degrees/s      		 -

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Yaw Rate Sensor
      Yaw Rate Sensor2
    2. Check the yaw rate sensor output value displayed on the Techstream.

      Result

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

    Result: 

    B 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

    Result: 

    A 

    See step  2

  2. CHECK AIRBAG ECU ASSEMBLY INSTALLATION 
    1. Turn the power switch off.
    2. Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.

      Refer to INSTALLATION [10/2018 - 07/2022] , or refer to INSTALLATION [07/2022 - ]

      OK

      The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.

      The yaw rate and acceleration sensor (airbag ECU assembly) is not tilted.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    INSTALL AIRBAG ECU ASSEMBLY CORRECTLY. Refer to  INSTALLATION [10/2018 - 07/2022]  , or refer to  INSTALLATION [07/2022 - ] 

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