POWER STEERING SYSTEM CALIBRATION


  1. TORQUE SENSOR ZERO POINT CALIBRATION (USING GTS)

    Note

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


    • The rack and pinion power steering gear assembly has been replaced.

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


    1. Perform inspection before calibration.


      1. Turn the ignition switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the ignition switch to ON.

      4. Turn the GTS on.

      5. Calibrate the rack and pinion power steering gear assembly. 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

        		 8 to 16 V ignition switch ON

        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 battery, and then perform calibration.

      7. Perform torque sensor zero point calibration.

        Note

        If DTC C1516 (Torque Sensor Zero Point Adjustment Incomplete) is stored, the torque sensor zero point cannot be calibrated. Clear the DTCs before starting calibration.


        1. Align the front wheels straight ahead and center the steering wheel.

        2. Turn the ignition switch off.

        3. Connect the GTS to the DLC3.

        4. Turn the ignition switch to ON.

        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.


    Chassis > EMPS > Trouble Codes

    Note

    If DTC C1515, C1516, C1534 or C1581 is output, perform troubleshooting for the corresponding DTC.

  • ASSIST MAP WRITING (USING GTS)

    Note

    Perform assist map writing if the following condition occurs:

    The rack and pinion power steering gear assembly has been replaced.


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

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


      Chassis > EMPS > Utility
    • Tester Display
    Signal Check

    • Tech Tips


  • Wait for at least 5 seconds.

  • Check for DTCs.


    Chassis > EMPS > Trouble Codes

    Tech Tips

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

    Click here