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Home >> Lexus >> 2024 >> GX 550 Overtrail >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (2 Of 2) & Symptom Tests >> Electronically Controlled Brake System >> Steering Angle Sensor Wrong Installation (X0455) [12/2023 - ] >> Procedure

Steering Angle Sensor Wrong Installation (X0455) [12/2023 - ]: Procedure

  1. CHECK FOR DTCs (HEALTH CHECK) 
    1. Using the GTS, 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 

    Result: 

    A 

    See step  2

  2. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. READ VALUE USING GTS (STEERING ANGLE SIGNAL INFORMATION) 
    1. Select the Data List using the GTS.

      Chassis > Steering Angle Sensor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Steering Angle Signal Information Steering angle value (Rotation to the left side is positive) Min.: -3072.5 deg, Max.: 3070.5 deg Turning left: 0.0 to 3070.5 deg
      Turning right: -3072.0 to 0.0 deg      		 During steering operation: Changes in proportion with steering wheel rotation

      Chassis > Steering Angle Sensor > Data List 

      Tester Display
      Steering Angle Signal Information
    2. Save the internal steering angle value to the GTS memory.
      NOTE:
      • If the value is +/- 360 deg (+/-15 deg), the steering sensor was incorrectly installed by 1 rotation.
      • If the value is +/- 720 deg (+/-15 deg), the steering sensor was incorrectly installed by 2 rotations.
      • In situations other than the above, the steering sensor may have been incorrectly installed by 3 or more rotations.

        In this case, it is possible that the proper installation or removal procedures were not followed, and the steering sensor may have been damaged.

      Result

      Result Proceed to
      0 +/- 15 deg A
      +/- 360 deg (+/-15 deg) or +/- 720 deg (+/-15 deg) B
      None of the above conditions are met C

    Result: 

    B 

    See step  7

    Result: 

    C 

    See step  13

    Result: 

    A 

    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. PERFORM ZERO POINT CALIBRATION OF STEERING SENSOR 
    1. Disconnect cable from negative (-) battery terminal.

      HINT: 

      If the cable is not disconnected from the negative (-) battery terminal, it may not be possible to obtain an accurate steering sensor zero point.

    2. Connect cable to negative (-) battery terminal.
    3. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CHECK VEHICLE CONTROL HISTORY (RoB) 
    1. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    2. Using the GTS, check for Vehicle Control History (RoB).

      Chassis > Brake/EPB > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X0455 is not output A
      X0455 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2023 - ] 

  7. ADJUST SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY 
    1. Remove the spiral cable with sensor sub-assembly.

      Refer to REMOVAL [12/2023 - ]

      NOTE:
      • Be sure to disconnect the cable from the negative (-) battery terminal before removing the spiral cable with sensor sub-assembly.

        HINT: 

        If the cable is not disconnected from the negative (-) battery terminal, it may not be possible to obtain an accurate steering sensor zero point.

      • Do not disconnect the steering sensor from the spiral cable.
    2. Based on the internal steering angle value that was saved to the GTS memory earlier, rotate the spiral cable with sensor sub-assembly.
      GTY974744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Clockwise
      *B Counterclockwise
      *a Interlock
      NOTE:
      • Rotate the steering sensor without disconnecting it from the spiral cable.
      • Make sure to follow the adjustment method shown in the table.
      • Failure to observe the following precautions may result in damage to the spiral cable with sensor sub-assembly.
        • When rotating the spiral cable with sensor sub-assembly, make sure to push on the interlock to release the interlock.
        • Do not turn the spiral cable with sensor sub-assembly using the airbag wire harness.
        • Do not forcibly rotate the part.
        • Make sure to perform the correct number of rotations in the correct direction.
      Steering Angle Signal Information Correction Method
      360 deg (+/-15 deg) Rotate clockwise (to the right), 1 rotation.
      - 360 deg (+/-15 deg) Rotate counterclockwise (to the left), 1 rotation.
      720 deg (+/-15 deg) Rotate clockwise (to the right), 2 rotations.
      - 720 deg (+/-15 deg) Rotate counterclockwise (to the left), 2 rotations.
    3. Install the spiral cable with sensor sub-assembly.

      Refer to INSTALLATION [12/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  8

  8. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  9

  9. READ VALUE USING GTS (STEERING ANGLE SIGNAL INFORMATION) 
    1. Select the Data List using the GTS.

      Chassis > Steering Angle Sensor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Steering Angle Signal Information Steering angle value (Rotation to the left side is positive) Min.: -3072.5 deg, Max.: 3070.5 deg Turning left: 0.0 to 3070.5 deg
      Turning right: -3072.0 to 0.0 deg      		 During steering operation:
      Changes in proportion with steering wheel rotation.

      Chassis > Steering Angle Sensor > Data List 

      Tester Display
      Steering Angle Signal Information

      Result

      Result Proceed to
      0 +/- 15 deg A
      None of the above conditions are met B

    Result: 

    B 

    REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    A 

    See step  10

  10. 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  11

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. CHECK VEHICLE CONTROL HISTORY (RoB) 
    1. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    2. Using the GTS, check for Vehicle Control History (RoB).

      Chassis > Brake/EPB > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X0455 is not output A
      X0455 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2023 - ] 

  13. CHECK STEERING WHEEL ASSEMBLY CENTER POSITION 
    1. Perform steering wheel assembly center position adjustment.

      Refer to ADJUSTMENT [12/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. ADJUST WHEEL ALIGNMENT 

    Refer to ADJUSTMENT [12/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  15

  15. 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  16

  16. PERFORM STEERING SENSOR ZERO POINT CALIBRATION 
    1. Disconnect cable from negative (-) battery terminal.

      HINT: 

      If the cable is not disconnected from the negative (-) battery terminal, it may not be possible to obtain an accurate steering sensor zero point.

    2. Connect cable to negative (-) battery terminal.
    3. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  17

  17. CHECK VEHICLE CONTROL HISTORY (RoB) 
    1. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    2. Using the GTS, check for Vehicle Control History (RoB).

      Chassis > Brake/EPB > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X0455 is not output A
      X0455 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2023 - ] 

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