Vehicle Stability Control System Calibration

Brake. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Brake Control Dynamic Control Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. DESCRIPTION

  1. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (When Using Intelligent Tester)

  1. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (When not Using Intelligent Tester)

Vehicle Stability Control System -- Calibration



DESCRIPTION

  1. Follow the chart below to perform calibration.

    Part to be Replaced/Operation
    		Necessary Operation
    Skid control ECU (Brake actuator assembly)
    		Yaw rate and acceleration sensor zero point calibration
    Yaw rate sensor assembly
    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 (When Using Intelligent Tester)
NOTICE:
  1. While obtaining the zero points, 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%).

  1. Clear the zero point calibration data.

    1. Turn the ignition switch off.

    2. Check that the steering wheel is in the straight-ahead position.

    3. for Automatic Transmission:
      Check that the shift lever is in P and apply the parking brake.
      for Manual Transmission:
      Check that the shift lever is in neutral and apply the parking brake.

    4. Connect the intelligent tester to the DLC3.

    5. Turn the ignition switch to ON.

    6. Turn the intelligent tester on.

    7. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Reset Memory.

    8. Turn the ignition switch off.

  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 in the straight-ahead position.

    3. for Automatic Transmission:
      Check that the shift lever is in P and the parking brake is applied.
      for Manual Transmission:
      Check that the shift lever is in neutral and the parking brake is applied.

      NOTICE:
      DTCs C1210 (zero point calibration of yaw rate sensor undone) and C1336 (zero point calibration of acceleration sensor undone) will be stored if the shift lever is not in P (for Automatic Transmission) or the parking brake is not applied (for Manual Transmission).

    4. Connect the intelligent tester to the DLC3.

    5. Turn the ignition switch to ON.

    6. Turn the intelligent tester on.

    7. Switch the skid control ECU (brake actuator assembly) to Test Mode using the intelligent tester. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Test Mode.

    8. After Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.

    9. Check that the VSC OFF indicator light blinks in the Test Mode pattern (0.125 seconds on and 0.125 seconds off).

      HINT:
      1. If the VSC OFF indicator light does not blink, perform zero point calibration again.
      2. Zero point calibration is performed only once after the system enters Test Mode.
      3. Calibration cannot be performed again until the stored data is cleared.

    10. Turn the ignition switch off and disconnect the intelligent tester.


OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (When not Using Intelligent Tester)
NOTICE:
  1. While obtaining the zero points, 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%).


  1. Clear the zero point calibration data.

    1. Turn the ignition switch off.

    2. Check that the steering wheel is in the straight-ahead position.

    3. for Automatic Transmission:
      Check that the shift lever is in P and apply the parking brake.
      for Manual Transmission:
      Check that the shift lever is in neutral and apply the parking brake.

    4. Turn the ignition switch to ON.



      5. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Brake Control Dynamic Control Systems.Anti-Lock Brake System.Vehicle Stability Control System Calibration

    5. Using SST, connect and disconnect terminals 12 (TS) and 4 (CG) of the DLC3 4 times or more within 8 seconds.

      Text in Illustration
      *a
      		Front view of DLC3
      SST
      09843-18040

    6. Check that the VSC OFF indicator light blinks (0.5 seconds on and 0.5 seconds off).



  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 in the straight-ahead position.

    3. for Automatic Transmission:
      Check that the shift lever is in P and the parking brake is applied.
      for Manual Transmission:
      Check that the shift lever is in neutral and the parking brake is applied.

      NOTICE:
      DTCs 36 (zero point calibration of yaw rate sensor undone) and 39 (zero point calibration of acceleration sensor undone) will be stored if the shift lever is not in P (for Automatic Transmission) or the parking brake is not applied (for Manual Transmission).


      4. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Brake Control Dynamic Control Systems.Anti-Lock Brake System.Vehicle Stability Control System Calibration

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

      Text in Illustration
      *a
      		Front view of DLC3
      SST
      09843-18040

    5. Turn the ignition switch to ON to enter Test Mode.

    6. After Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.

    7. Check that the VSC OFF indicator light blinks in the Test Mode pattern (0.125 seconds on and 0.125 seconds off).

      HINT:
      1. If the VSC OFF indicator light does not blink, perform zero point calibration again.
      2. Zero point calibration is performed only once after the system enters Test Mode.
      3. Calibration cannot be performed again until the stored data is cleared.

    8. Turn the ignition switch off and disconnect SST from the DLC3.