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Vehicle Stability Control System: Calibration

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. 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", clear and read the sensor calibration data.
    • Follow the chart to perform calibration.
      Fig 1: Identifying Harness Connector
      G04832151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CONNECTOR HARNESS REFERENCE CHART

      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.
  2. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (TECHSTREAM) 
    NOTE:
    • While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
    • Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).
    1. Clear the zero point calibration data.
      1. Turn the ignition switch off.
      2. Connect Techstream to the DLC3.
      3. Check that the steering wheel is centered and move the shift lever to the P position.
      4. Turn the ignition switch to the ON position.
      5. Operate Techstream to erase the codes (select "Reset Memory").

        HINT:

        Refer to the Techstream operator's manual for further details.

      6. Turn the ignition switch off.
        NOTE: If the ignition switch is turned to the ON position for more than 15 seconds with the shift lever in the P position 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 warning lights.
    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.
        NOTE: DTCs 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 ACCELERATION SENSOR UNDONE  ).
      3. Connect Techstream to the DLC3.
      4. Turn the ignition switch to the ON position.
      5. Set Techstream to Test Mode (select "Test Mode").

        HINT:

        Refer to the Techstream operator's manual for further details.

      6. After the Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.
      7. Check that the VSC warning light blinks (Test Mode).

        HINT:

        • If the VSC warning light does not blink, perform zero point calibration again.
        • The zero point calibration is performed only once after the system enters the Test Mode.
        • Calibration cannot be performed again until the stored data is cleared.
      8. Turn the ignition switch off and disconnect Techstream.
        Fig 2: VSC Warning Light Blinking Pattern
        G04977997Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (SST CHECK WIRE) 
    NOTE:
    • While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
    • Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).
    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.
      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 

      6. Check that the warning light indicates the normal system code.
        Fig 3: Identifying TS And CG Terminals Of DLC3
        G04977895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: If the ignition switch is turned to the ON position for more than 15 seconds with the shift lever in the P position 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 warning lights.
        Fig 4: Identifying Blinking Pattern
        G05130946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.
        NOTE: DTCs 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 ACCELERATION SENSOR UNDONE  ).
      3. Using SST, connect terminals TS and CG of the DLC3.

        SST 09843-18040 

      4. Turn the ignition switch to the ON position.
      5. Keep the vehicle stationary on a level surface for 2 seconds or more.
        Fig 5: Identifying TS And CG Terminals Of DLC3
        G04977895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Check that the VSC warning light blinks (Test Mode).

        HINT:

        • If the VSC warning light does not blink, perform zero point calibration again.
        • The zero point calibration is performed only once after the system enters the Test Mode.
        • Calibration cannot be performed again until the stored data is cleared.
      7. Turn the ignition switch off and disconnect the SST from the DLC3.
        Fig 6: Identifying Blinking Pattern
        G04977997Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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