VEHICLE STABILITY CONTROL SYSTEM > CALIBRATION

for Preparation Click here



DESCRIPTION
  1. After replacing the VSC relevant components or performing "Front wheel alignment adjustment", clear and read the sensor calibration data.
  2. Follow the chart to perform calibration.

Replacing Parts / Operation
Necessary Operation
Skid control ECU
Yaw rate and acceleration sensor zero point calibration.
Yaw rate and acceleration sensor
  1. Clearing zero point calibration data.
  2. Yaw rate and acceleration sensor zero point calibration.
Front wheel alignment adjustment
  1. Clearing zero point calibration data.
  2. Yaw rate and acceleration sensor zero point calibration.

OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (INTELLIGENT TESTER)

NOTICE:
  1. While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
  2. Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).


    C139987E01
  1. Clear the zero point calibration data.

    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Check that the steering wheel is centered and move the shift lever to the P position (A/T) or apply the parking brake (M/T).

    4. Turn the ignition switch to the ON position.



    5. C107606
    6. Operate the intelligent tester to erase the codes (select "Reset Memory").

      HINT:
      Refer to the intelligent tester operator's manual for further details.
    7. Turn the ignition switch off.

      NOTICE:
      If the ignition switch is turned to the ON position for more than 15 seconds with the shift lever in the P position (A/T) or the parking brake applied (M/T) after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the multi information display.


  2. Perform zero point calibration of the yaw rate and acceleration sensor.

    1. Turn the ignition switch off.

    2. Check that the steering wheel is centered and move the shift lever to the P position (A/T) or apply the parking brake (M/T).

      NOTICE:
      DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (A/T) or the parking brake is not applied (M/T) (Click here).


    3. C139987E01
    4. Connect the intelligent tester to the DLC3.

    5. Turn the ignition switch to the ON position.



    6. C106673
    7. Set the intelligent tester to Test Mode (select "Test Mode").

      HINT:
      Refer to the intelligent tester operator's manual for further details.
    8. After the Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.



    9. C139988E01
    10. Check that the "CHECK VSC SYSTEM" is displayed on the multi information display (Test Mode).

      HINT:
      1. The SLIP indicator light remains on during Test Mode because TRC is prohibited.
      2. If the "CHECK VSC SYSTEM" is not displayed on the multi information display, perform zero point calibration again.
      3. The zero point calibration is performed only once after the system enters the Test Mode.
      4. Calibration cannot be performed again until the stored data is cleared.
    11. Turn the ignition switch off and disconnect the intelligent tester.


OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (SST CHECK WIRE)

NOTICE:
  1. While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
  2. Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).


    G022987E07
  1. Clear the zero point calibration data.

    1. Turn the ignition switch off.

    2. Check that the steering wheel is centered and move the shift lever to the P position (A/T) or apply the parking brake (M/T).

    3. Turn the ignition switch to the ON position.

    4. The warning light and indicator light come on for 3 seconds to indicate that the initial check is completed.

    5. Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.

      SST
      09843-18040  

      NOTICE:
      If the ignition switch is turned to the ON position for more than 15 seconds with the shift lever in the P position (A/T) or the parking brake applied (M/T) after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the multi information display.


  2. Perform zero point calibration of the yaw rate and acceleration sensor.

    1. Turn the ignition switch off.

    2. Check that the steering wheel is centered and move the shift lever to the P position (A/T) or apply the parking brake (M/T).

      NOTICE:
      DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (A/T) or the parking brake is not applied (M/T) (Click here).


    3. G022987E07
    4. Using SST, connect terminals TS and CG of the DLC3.

      SST
      09843-18040  
    5. Turn the ignition switch to the ON position.

    6. Keep the vehicle stationary on a level surface for 2 seconds or more.



    7. C139988E01
    8. Check that the "CHECK VSC SYSTEM" is displayed on the multi information display (Test Mode).

      HINT:
      1. The SLIP indicator light remains on during Test Mode because TRC is prohibited.
      2. If the "CHECK VSC SYSTEM" is not displayed on the multi information display, perform zero point calibration again.
      3. The zero point calibration is performed only once after the system enters the Test Mode.
      4. Calibration cannot be performed again until the stored data is cleared.
    9. Turn the ignition switch off and disconnect the SST from the DLC3.