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Home >> Lexus >> 2007 >> GS 450h >> Repair and Diagnosis >> Steering >> Manual Steering >> Power Steering >> Electronic Power Steering System >> DTC C1516 Torque Sensor Zero Point Adjustment Incomplete; DTC C1526 Rotation Angle Sensor Initialization Incomplete >> Inspection Procedure
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Inspection Procedure

  1. CLEAR DTC 
  2. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT 
    1. Initialize the rotation angle sensor and calibrate the torque sensor zero point (see CALIBRATION  )
  3. RECONFIRM DTC 
    1. Check for DTCs.

      Result 

      RESULT REFERENCE

      Result Proceed to
      DTCs are still output after performing rotation angle sensor initialization and steering zero point calibration 3 times. A
      DTCs are still output after performing rotation angle sensor initialization and steering zero point calibration once or twice. B
      Normal system code is output. C

    B:  GO TO step  2

    C: END 

    A: GO TO Next Step 

  4. REPLACE POWER STEERING ECU 
  5. CLEAR DTC 
  6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT 
    1. Initialize the rotation angle sensor and calibrate the torque sensor zero point (see CALIBRATION  ).
  7. RECONFIRM DTC 
    1. Check for DTCs.

      Result 

      RESULT REFERENCE

      Result Proceed to
      DTCs are still output after performing rotation angle sensor initialization and steering zero point calibration 3 times. A
      DTCs are still output after performing rotation angle sensor initialization and steering zero point calibration once or twice. B
      Normal system code is output. C
      NOTE:
      • If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor, and calibrate the torque sensor zero point (see CALIBRATION  ).
      • If replacing the power steering link assembly, perform VGRS actuator angle initialization (see INITIALIZATION ) and VGRS actuator angle neutral calibration (see CALIBRATION ) after wheel alignment adjustment.

    B:  GO TO step  6

    C: END 

    A: REPLACE POWER STEERING LINK ASSEMBLY