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Section 8 (Brakes - Abs With EBD & BD & TRAC & VSC (Diagnostics)): Calibration

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. DESCRIPTION 

    After replacing the VSC relevant components or performing "Front wheel alignment adjustment", clearing and reading the sensor calibration data are necessary.

    Follow the table to perform calibration.

    HINT:

    For a rear air suspension vehicle, it is necessary to obtain zero point calibration data (again) after adjusting vehicle height.

    SENSOR CALIBRATION DATA

    Replacement/Adjustment Parts Necessary Operation
    Master cylinder solenoid (Skid control ECU) Yaw rate and deceleration sensor zero point calibration.
    Yaw rate and deceleration sensor
    1. 3. Clearing zero point calibration data.
    2. 4. Yaw rate and deceleration sensor zero point calibration.
    Front wheel alignment
    1. Clearing zero point calibration data.
    2. Yaw rate and deceleration sensor zero point calibration.
    Rear air suspension
    1. Clearing zero point calibration data.
    2. Yaw rate and deceleration sensor zero point calibration.

    2. USING SST CHECK WIRE: 

  2. CLEAR ZERO POINT CALIBRATION 

    HINT:

    After replacing the yaw rate and deceleration sensor, make sure to clear zero point calibration data in the skid control ECU and perform zero point calibration.

    1. Turn the ignition switch to the ON position.
    2. Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.

      SST 09843-18040

      Fig 1: Identifying DLC3 Connector Terminals
      G04067685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the warning light indicates the normal system code.
    4. Remove the SST from the terminals of the DLC3.
    5. Using a check wire, perform zero point calibration of the yaw rate and deceleration sensor (refer to step  3).
      Fig 2: Identifying Blinking Pattern In TEST MODE
      G04530213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR 

    After replacing the master cylinder solenoid and/or yaw rate and deceleration sensor, make sure to perform yaw rate and deceleration sensor zero point calibration.

    NOTE:
    • While obtaining the zero point, do not vibrate the vehicle by tilting, moving or shaking it and keep it in a stationary condition. (Do not start the engine.)
    • Be sure to do this on a level surface (with an inclination of less than 1 degree).
    1. Procedures for test mode.
      1. Turn the ignition switch off.
      2. Using SST, connect terminals TS and CG of the DLC3.

        SST 09843-18040

      3. Check that the steering wheel is in the straight-ahead position and move the shift lever to the P position.
        Fig 3: Identifying DLC3 Connector Terminals
        G04067685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: DTC C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (see DTC C1210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF DECELERATION SENSOR UNDONE  ).
      4. Turn the ignition switch to the ON position.
      5. Keep the vehicle in a stationary condition on a level surface for 2 seconds or more.
        Fig 4: Identifying Blinking Pattern In TEST MODE
        G04530213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Check that the VSC TRAC warning light is blinking in test mode.
        NOTE: The VSC TRAC warning light stays on when obtaining the zero point.

    HINT:

    • If the VSC TRAC warning light does not blink, perform the zero point calibration again.
    • The zero point calibration is performed only once after the system enters test mode.
    • Calibration cannot be performed again until the stored data is cleared once.

    4. USING HAND-HELD TESTER: 

  4. CLEAR ZERO POINT CALIBRATION 

    After replacing the yaw rate and deceleration sensor, make sure to clear zero point calibration data in the skid control ECU and perform zero point calibration.

    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. Operate the hand-held tester to erase the codes.
      Fig 5: Connecting Hand-Held Tester To DLC3
      G04335907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 6: Identifying Reset Memory Procedure
      G04335908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Using the hand-held tester, perform zero point calibration of the yaw rate and deceleration sensor (refer to step  5).
  5. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR 

    After replacing the master cylinder solenoid and/or yaw rate and deceleration sensor, make sure to perform yaw rate and deceleration sensor zero point calibration.

    NOTE:
    • While obtaining the zero point, do not vibrate the vehicle by tilting, moving or shaking it and keep it in a stationary condition. (Do not start the engine.)
    • Be sure to do this on a level surface (with an inclination of less than 1 degree).
    1. Procedures for test mode.
      1. Check that the steering wheel is in the straight-ahead position and move the shift lever to the P position.
        NOTE: DTC C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (see DTC C1210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF DECELERATION SENSOR UNDONE  ).
      2. Connect the hand-held tester to the DLC3.
      3. Turn the ignition switch to the ON position.
      4. Set the hand-held tester in test mode ("TEST MODE")

        HINT:

        Refer to the hand-held tester operator's manual for further details

        Fig 7: Connecting Hand-Held Tester To DLC3
        G04335909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Keep the vehicle in a stationary condition on a level surface for 2 seconds or more.
      6. Check that the VSC TRAC warning light is blinking in test mode.
        NOTE: The VSC TRAC warning light stays on when obtaining the zero point.

    HINT:

    • If the VSC TRAC warning light does not blink, perform the zero point calibration again.
    • The zero point calibration is performed only once after the system enters test mode.
    • Calibration cannot be performed again until the stored data is cleared once.
      Fig 8: Identifying Blinking Pattern In TEST MODE
      G04530213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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