Work Support

Steering zero point calibration
CAUTION:
- Always perform a steering zero point calibration after replacing the steering column ASSY or power steering computer ASSY, or when there is a difference between the right and left steering force.
- When C1516 (torque sensor zero point calibration not finished) is recorded, please delete the diagnosis code as torque sensor zero point calibration is unable to be performed in this case. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES )
- When C1526 (Resolver calibration not finished) is recorded, please delete the diagnosis code as rotation angle sensor output calibration is unable to be performed in this case. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES )
NOTE: For steering zero point calibration, delete the sensor calibration value and perform torque sensor zero point calibration and rotation angle sensor output calibration.
1. Items to be checked before calibration.
  1. Use the SSM4 to check the [Ignition Power Supply Voltage] with the [Data monitor]. (Refer to DATA MONITOR )
    Voltage: 10 V or more
    
    CAUTION: As calibration cannot be performed if the IG power supply voltage is less than 9 V, please recharge or replace the battery before commencing calibration if this value is not within the specified range.
2. Steering zero point calibration
  1. Set the steering and front tires to the straight-ahead position.
  2. Connect the SSM4 to the DLC3.
  3. Turn the ignition switch to ON.
  4. Select [Work Support] →[Steering sensor revision] on the SSM4 display screen.
  5. Follow the SSM4 display screen to carry out the steering 0 point adjustment.
    CAUTION:
    Do not touch the steering during the torque sensor zero point calibration.
    
    Do not do any fast steering operation during the rotation angle sensor output calibration.
  6. Check the diagnosis codes. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES )
    CAUTION:
    When performing steering zero point calibration, please confirm that the diagnosis codes are normal after the procedure is complete.
    
    If C1515, C1516, C1525, C1526, or C1534 are output, follow the procedure to perform troubleshooting for each diagnosis code. (Refer to LIST OF DIAGNOSTIC CODES )
Operations related to assist map
1. Confirmation of assist map
  1. Connect the SSM4 to the DLC3.
  2. Turn the ignition switch to ON.
  3. Select [Work Support] →[related Assist Map Selection] →[Assist Map Confirmation] on the SSM4 display screen.
2. Removal of assist map
  1. Connect the SSM4 to the DLC3.
  2. Turn the ignition switch to ON.
  3. Select [Work Support] →[related Assist Map Selection] →[Assist Map Clear] on the SSM4 display screen.