VARIABLE GEAR RATIO STEERING SYSTEM CALIBRATION

DTC Code DTC Name
CALIBRATION

CAUTION / NOTICE / HINT

Note

Use this procedure to center the steering wheel if:


  • The steering actuator assembly has been replaced.

  • The VGRS ECU (front steering control ECU) has been replaced.

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

  • The front wheel alignment has been adjusted.

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

PROCEDURE


  1. VGRS SYSTEM CALIBRATION PROCEDURE

    Result
    Proceed to
    USING SST CHECK WIRE
    USING GTS

    USING GTS

    FACE TIRES STRAIGHT AHEAD Click here

    USING SST CHECK WIRE

  2. FACE TIRES STRAIGHT AHEAD

    Note

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

    Result
    Proceed to
    NEXT

    NEXT

  3. 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 5 Click here

    A

  4. PERFORM ACTUATOR ANGLE INITIALIZATION

    Note

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


    1. Turn the power switch off.

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

      SST
      09843-18040
    3. B002BNVC05
      *a Front view of DLC3

      Turn the power switch on (READY). Start the engine.

    4. Center the steering wheel.

    5. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

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

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

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

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

      Tech Tips

      If the master warning light comes on, DTC C1591/51 is stored.

    10. Disconnect SST from the DLC3.

    11. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  5. 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 9 Click here

    A

  6. UNLOCK STEERING ACTUATOR

    Note

    Unlock the steering actuator with the vehicle stopped.


    1. Turn the power switch off.

    2. B002BRSC15
      *a

      Rear view of wire harness connector

      (to Steering Actuator Assembly)

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

    3. Disconnect the steering actuator assembly connector.

    4. Connect a jumper wire from terminal 7 (LV+) of the steering actuator assembly to the positive (+) 12 V battery terminal and another jumper wire from terminal 16 (LG+) of the steering actuator assembly to the negative (-) 12 V battery terminal.

      Note

      Do not apply voltage for more than 3 minutes.

      Result
      Proceed to
      NEXT

    NEXT

  7. STEERING CENTER ADJUSTMENT


    1. Center the steering wheel.

      Note

      If the centering of the spiral cable sub-assembly was not confirmed when the steering wheel was installed, confirm the centering of the spiral cable.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. LOCK STEERING ACTUATOR


    1. Disconnect the positive (+) and negative (-) 12 V battery jumper wires from the steering actuator assembly.

    2. Connect the connector to the steering actuator assembly.

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

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

      Note

      Perform these procedures with the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  9. ADJUST ACTUATOR ANGLE

    Tech Tips

    Activating and ending test mode completes the actuator angle adjustment.


    1. Make sure the power switch is off.

      Note

      Do not touch the steering wheel during these procedures.

    2. B002BNVC06
      *a Front view of DLC3

      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 "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.

      Result
      Proceed to
      NEXT

    NEXT

  10. CHECK MASTER WARNING LIGHT


    1. Confirm that the master warning light is off.

    2. Turn the power switch off, and then on (IG).

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

      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK STEERING WHEEL OPERATION


    1. Turn the power switch on (READY).

    2. Perform the steering sensor initialization.

      Click here

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

      Result
      Proceed to
      NEXT

    NEXT

    END

  12. FACE TIRES STRAIGHT AHEAD

    Note

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

    Result
    Proceed to
    NEXT

    NEXT

  13. PERFORM VGRS SYSTEM CALIBRATION


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / VGRS / Utility / Steering Angle Adjust.

    5. According to the display on the GTS, perform calibration.

      Result
      Proceed to
      NEXT

    NEXT

  14. CHECK MASTER WARNING LIGHT


    1. Confirm that the master warning light is off.

    2. Turn the power switch off.

    3. Disconnect the GTS from the DLC3.

    4. Turn the power switch on (IG).

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

      Result
      Proceed to
      NEXT

    NEXT

  15. CHECK STEERING WHEEL OPERATION


    1. Turn the power switch on (READY).

    2. Perform the steering sensor initialization.

      Click here

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

      Result
      Proceed to
      NEXT

    NEXT

    END