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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Except HV) - Diagnostic Codes (3 Of 3), Symptom Tests & Circuit Tests >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> Zero Point Calibration of Steering Angle Sensor Not Acquired (X20D8) [12/2019 - ] >> Procedure

Zero Point Calibration of Steering Angle Sensor Not Acquired (X20D8) [12/2019 - ]: Procedure

  1. CHECK DTC (HEALTH CHECK) 
    1. Perform the Health Check using the GTS.

      Result

      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2022]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 11/2023]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ] 

    Result: 

    See step  2

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

      Refer to INSTALLATION [12/2019 - 10/2022] , or refer to INSTALLATION [10/2022 - 11/2023] , or refer to INSTALLATION [11/2023 - ]

      OK

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

      The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  3

  3. PERFORM ZERO POINT CALIBRATION OF STEERING ANGLE SENSOR 
    1. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.

      HINT: 

      When driving at a speed of 15 km/h or more for 1 second or more, the slip indicator light turns off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CLEAR VEHICLE CONTROL HISTORY (RoB) 
    1. Using the GTS, clear the Vehicle Control History (RoB).

      Chassis > Brake/EPB > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK VEHICLE CONTROL HISTORY (RoB) 
    1. Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
    2. Using the GTS, check for Vehicle Control History (RoB).

      Chassis > Brake/EPB > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X20D8 is not output. A
      X20D8 is output. B

    Result: 

    END 

    Result: 

    REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

  6. INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  4