POWER STEERING SYSTEM(for Power Tilt and Power Telescopic Steering Column) CALIBRATION


  1. TORQUE SENSOR ZERO POINT CALIBRATION (USING THE GTS)

    Note

    Perform torque sensor zero point calibration if any of the following conditions occur:


    • The power steering ECU assembly has been replaced.

    • The electric power steering column sub-assembly has been replaced.

    • There is a difference in steering effort between turning left and right.


    1. Perform inspection before calibration.


      1. Turn the power switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the power switch on (IG).

      4. Turn the GTS on.

      5. Enter the following menus: Chassis / EMPS / Data List.

      6. Check the values by referring to the table below.


        Chassis > EMPS > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        IG Power Supply IG power source voltage

        Min.: 0.0000 V

        Max.: 20.1531 V

        		 Power switch on (IG): 8 to 16 V -

        Chassis > EMPS > Data List
        Tester Display
        IG Power Supply

        Note

        If the IG power supply voltage is 8 V or less, calibration cannot be performed. In this case, charge or replace the auxiliary battery, and then perform calibration.

      7. Perform torque sensor zero point calibration.


        1. Set the steering wheel to the center point and align the front wheels straight ahead.

        2. Turn the power switch off.

        3. Connect the GTS to the DLC3.

        4. Turn the power switch on (IG).

        5. Turn the GTS on.

        6. Enter the following menus: Chassis / EMPS / Utility / Torque Sensor Adjustment.


          Chassis > EMPS > Utility
        8. Tester Display
        Torque Sensor Adjustment

Note


  • Check for DTCs.

    Click here


    Chassis > EMPS > Trouble Codes

    Note

    If DTC C1515/15, C1516/16 or C1534/25 is output, perform troubleshooting for the corresponding DTC.

  • TORQUE SENSOR ZERO POINT CALIBRATION (USING SST CHECK WIRE)

    Note

    Perform torque sensor zero point calibration if any of the following conditions occur:


    • The power steering ECU assembly has been replaced.

    • The electric power steering column sub-assembly has been replaced.

    • There is a difference in steering effort between turning left and right.


    1. Perform inspection before calibration.


      1. Turn the power switch off.

      2. Disconnect the n2 power steering ECU assembly connector.

      3. Turn the power switch on (IG).

      4. B002JOCC12
        *a

        Front view of wire harness connector

        (to Power Steering ECU Assembly)

        Measure the voltage according to the value(s) in the table below.

        Note

        If the IG power supply voltage is 8 V or less, calibration cannot be performed. In this case, charge or replace the auxiliary battery, and then perform calibration.

      5. Turn the power switch off.

      6. Reconnect the n2 power steering ECU assembly connector.

      7. Clear sensor calibration value.


        1. Turn the power switch off.

        2. B002KFQC80
        8. *1 DLC3

    • Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.

    SST
    09843-18040

    Note

    Connect the terminals correctly to avoid a malfunction.

  • Turn the power switch on (IG) and then connect and disconnect terminals 13 (TC) and 4 (CG) at least 20 times in 20 seconds.

  • Check that the power steering warning light (red) blinks and then remains illuminated.

    Tech Tips

    The power steering warning light (red) illumination indicates that DTC C1515/15 has been stored.

  • Turn the power switch off.

    Note

    After erasing the sensor calibration value, zero point calibration cannot be performed if the power switch is on (IG).

  • Perform torque sensor zero point calibration.


    1. Set the steering wheel to the center point and align the front tires straight ahead.

    2. Turn the power switch off.

    3. B002KFQC81
      *1 DLC3

      Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.

      SST
      09843-18040

      Note

      Connect the terminals correctly to avoid a malfunction.

    4. Turn the power switch on (IG).

      Note


      • Do not touch the steering wheel for 3 seconds before and after entering test mode.

      • The power steering warning light (red) illuminates, but this is not a malfunction.

      Tech Tips


      • Torque sensor zero point calibration is performed as a result of entering test mode.

      • When entering test mode, the power steering warning light (red) illuminates for 2 seconds, and then the power steering warning light (yellow) illuminates for 2 seconds. Afterward, the power steering warning light (red) illuminates again. When torque sensor zero point calibration ends normally, the power steering warning light (red) blinks at 0.125 second (4 Hz) intervals.

    5. Check the power steering warning light (red) for blinking which indicates that torque sensor zero point calibration has ended normally, and then disconnect the 12 (TS) - 4 (CG) terminals of the DLC3 (test mode completed).

    6. Check for DTCs.

      Click here

      Note

      If DTC C1515/15, C1516/16 or C1534/25 is output, perform troubleshooting for the corresponding DTC.

  • ASSIST MAP WRITING (USING THE GTS)

    Note

    Perform assist map writing if the following condition occurs:

    The power steering ECU assembly has been replaced.


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / EMPS / Utility / Signal Check.


      Chassis > EMPS > Utility
      Tester Display
      Signal Check

      Tech Tips


      • Follow the instructions on the GTS to perform Signal Check.

      • With DTC C1581/26 output, performing Signal Check will cause the power steering ECU assembly to enter Test Mode and the assist map will be written automatically.

    6. Wait for 5 seconds or more.

    7. Check for DTCs.

      Click here


      Chassis > EMPS > Trouble Codes

      Tech Tips

      After writing the assist map, if DTC C1581/26 is output, perform the troubleshooting procedure for DTC C1581/26.

      Click here

  • ASSIST MAP WRITING (USING SST CHECK WIRE)

    Note

    Perform assist map writing if the following condition occurs:

    The power steering ECU assembly has been replaced.


    1. B002J3LC22
      *1 DLC3

      Turn the power switch off.

    2. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.

      SST
      09843-18040

      Note

      Connect the terminals correctly to avoid a malfunction.

    3. Turn the power switch on (IG).

    4. Wait for 5 seconds or more.

    5. Check for DTCs.

      Click here

      Tech Tips

      After writing the assist map, if DTC C1581/26 is output, perform the troubleshooting procedure for DTC C1581/26.

      Click here