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Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (B1380-U0074) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) >> Zero Point Calibration of Steering Angle Sensor Not Acquired (X20D8) [08/2019 - ] >> Procedure

Zero Point Calibration of Steering Angle Sensor Not Acquired (X20D8) [08/2019 - ]: Procedure

  1. CHECK FOR DTCs (HEALTH CHECK) 
    1. Using the Techstream, perform the Health Check.

      Result

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

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. REFER TO  DIAGNOSTIC TROUBLE CODE CHART [08/2015 - 08/2019] 

    Result: 

    A 

    See step  2

  2. CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION 
    1. Check that the airbag sensor assembly has been installed properly.

      Refer to INSTALLATION [08/2015 - ]

      OK

      The sensor should be tightened to the specified torque.

      The sensor is not installed in a tilted position.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  3

  3. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION 
    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 (9 mph) 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 
    1. Using the Techstream, clear the Vehicle Control History.
      CHASSIS > BRAKE > UTILITY

      Tester Display
      Vehicle Control History (RoB)

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK VEHICLE CONTROL HISTORY 
    1. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    2. Using the Techstream, check for Vehicle Control History.
      CHASSIS > BRAKE > UTILITY

      Tester Display
      Vehicle Control History (RoB)

      Result

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

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [08/2015 - ] 

  6. INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY 

    Refer to INSTALLATION [08/2015 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  4