VARIABLE GEAR RATIO STEERING SYSTEM CALIBRATION

Note

Use this procedure to center the steering wheel if:


  • The steering actuator has been replaced.

  • The steering control ECU has been replaced.

  • The steering column or steering intermediate shaft has been disconnected.

  • The steering wheel is still off-center after completing the steering angle sensor initialization.


  1. VGRS SYSTEM CALIBRATION PROCEDURE (WHEN USING SST CHECK WIRE)


    1. FACE TIRES STRAIGHT AHEAD

      Note

      Drive the vehicle to confirm that the steering wheel is centered.


      NEXT

    2. CHECK DTC


      1. Check for DTCs Click here.

        Result
        Result Proceed to
        DTC C1591/51 is not output A
        DTC C1591/51 is output B

        B

        Go to step 4
        A

    3. PERFORM ACTUATOR ANGLE INITIALIZATION

      SST
      09843-18040

      Note

      If the procedures from *1 to *2 are not completed within 1 minute, or if errors are made during these procedures, perform the initialization again from the beginning.


      1. A01GWPOE81

        Turn the power switch ON (READY).

      2. Center the steering wheel.

      3. Using SST, connect terminals 12 (TS) and 4 (CG), and 13 (TC) and 4 (CG) of the DLC3. (*1)

      4. Disconnect SST from terminal 12 (TS) of the DLC3, and turn the steering wheel to the left 180° or more.

      5. Connect SST to terminal 12 (TS) of the DLC3.

      6. Disconnect SST from terminal 13 (TC) of the DLC3, and turn the steering wheel to the right 180° or more.

      7. Connect SST to terminal 13 (TC) of the DLC3. (*2)

        Tech Tips

        When the master warning light comes on, DTC C1591/51 is memorized.

      8. Disconnect SST from the DLC3.

      9. Turn the power switch OFF.


        NEXT

    4. FACE TIRES STRAIGHT AHEAD


      1. Confirm that the steering wheel is centered when facing the tires straight ahead.

        Note

        Drive the vehicle to confirm that the steering wheel is centered.

        Result
        Result Proceed to
        Steering wheel is off-center A
        Steering wheel is centered B

        B

        Go to step 8
        A

    5. UNLOCK STEERING ACTUATOR

      Note

      Do not turn the power switch ON (READY).


      1. Turn the power switch OFF.

      2. Disconnect the negative (-) terminal cable from the auxiliary battery.

      3. A01GY9QE02

        Disconnect the z16 connector from the steering actuator.

      4. Connect a jumper wire from terminal LV to the positive (+) 12 V battery terminal and another jumper wire from terminal LG to the negative (-) 12 V battery terminal.

        Note

        Do not apply voltage for more than 3 minutes.


        NEXT

    6. STEERING CENTER ADJUSTMENT


      1. Center the steering wheel.

        Note

        If the centering of the spiral cable was not confirmed when the steering wheel was installed, confirm the centering of the spiral cable Click here.


        NEXT

    7. LOCK STEERING ACTUATOR


      1. Disconnect the positive (+) and negative (-) 12 V battery terminal cables from the steering actuator.

      2. Connect the z16 connector to the steering actuator.

      3. Connect the negative (-) terminal cable to the auxiliary battery.

      4. Turn the steering wheel approximately 3° to the left and right. Confirm that the reaction force can be felt.

        Note


        • If the above procedures are not followed correctly, a DTC will be detected. If a DTC is detected, perform the above procedures again and then check for DTCs.

        • Perform these procedures with the power switch OFF.


        NEXT

    8. ADJUST ACTUATOR ANGLE

      Tech Tips

      Activating and ending test mode will complete actuator angle adjustment.


      1. Make sure the power switch is OFF.

        Note

        Do not touch the steering wheel during these procedures.

      2. A01GWPOE80

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

        SST
        09843-18040

      3. Turn the power switch ON (IG).

      4. Confirm that the "VGRS TEST MODE" is displayed on the multi-information display when test mode is activated.

        Tech Tips

        Wait approximately 5 seconds.

      5. Turn the power switch OFF.

      6. Disconnect SST from terminals 12 (TS) and 4 (CG) of the DLC3.

      7. Turn the power switch ON (IG) again.


        NEXT

    9. CHECK MASTER WARNING LIGHT


      1. Confirm that the master warning light is off.

      2. Turn the power switch OFF, then ON (IG).

      3. Confirm that the master warning light is operating normally.


        NEXT

    10. CHECK STEERING WHEEL OPERATION


      1. Turn the power switch ON (READY).

      2. Perform the steering angle sensor initialization Click here.

      3. Turn the steering wheel from lock to lock and check that it rotates approximately 2.7 turns.

      4. Drive the vehicle and confirm that the steering wheel is centered.


        NEXT
        END

  2. VGRS SYSTEM CALIBRATION PROCEDURE (WHEN USING INTELLIGENT TESTER)


    1. FACE TIRES STRAIGHT AHEAD

      Note

      Drive the vehicle to confirm that the steering wheel is centered.


      NEXT

    2. PERFORM VGRS SYSTEM CALIBRATION


      1. Connect the intelligent tester to the DLC3.

      2. Turn the power switch ON (IG).

      3. Turn the tester on.

      4. Enter the menu items in this order: Chassis / VGRS / Utility / Steering Angle Adjust.

        Then, press "Next".

      5. Follow the instructions on the tester, and press "Next".

        Note

        Press the "Next" key even if DTC C15B4/71 is output.

      6. Follow the instructions on the tester, and press "Next".

      7. Follow the instructions on the tester, and press "Next".

        Note

        Ensure that the power switch is OFF.

      8. Follow the instructions on the tester, and press "Next".

      9. Follow the instructions on the tester, and press "Next".

        Note

        If the centering of the spiral cable was not confirmed when the steering wheel was installed, confirm the centering of the spiral cable Click here.

      10. Follow the instructions on the tester, and press "Next".

        Note

        Do not touch the steering wheel during these procedures.

      11. Follow the instructions on the tester, and press "Next".

      12. Follow the instructions on the tester, and press "Next".

        Note

        Do not touch the steering wheel during these procedures.

      13. "NOW CALIBRATING" is displayed and the display switches automatically to the next screen.

        Note

        Do not touch the steering wheel during these procedures.

      14. "Steering Angle Adjust is complete." is displayed. Then, check that the VGRS system calibration is completed normally.

      15. Select "Exit" to return the display to the "MENU" screen.


        NEXT

    3. CHECK MASTER WARNING LIGHT


      1. Confirm that the master warning light is off.

      2. Turn the power switch OFF.

      3. Disconnect the intelligent tester from the DLC3.

      4. Turn the power switch ON (IG).

      5. Confirm that the master warning light is operating normally.


        NEXT

    4. CHECK STEERING WHEEL OPERATION


      1. Turn the power switch ON (READY).

      2. Perform the steering angle sensor initialization Click here.

      3. Turn the steering wheel from lock to lock and check that it rotates approximately 2.7 turns.

      4. Drive the vehicle and confirm that the steering wheel is centered.


        NEXT
        END