VEHICLE STABILITY CONTROL SYSTEM CALIBRATION


  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.

    Replacing Part/Operation Necessary Operation
    Skid control ECU Yaw rate and deceleration sensor zero point calibration
    Yaw rate and deceleration sensor

    1. Clearing zero point calibration data

    2. Yaw rate and deceleration sensor zero point calibration
    Front wheel alignment adjustment

    1. Clearing zero point calibration data

    2. Yaw rate and deceleration sensor zero point calibration

  2. OBTAIN ZERO POINT OF YAW RATE AND DECELERATION SENSOR (When Using GTS)

    Note


    • While obtaining the zero points, 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 in the straight-ahead position.

      3. for CVT model:

        Check that the shift lever is in P, and apply the parking brake.

        for Manual Transaxle model:

        Check that the shift lever is in N, and apply the parking brake.

      4. Connect the GTS to the DLC3.

      5. Turn the ignition switch to ON.

      6. Turn the GTS on.

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

      8. Check that the SLIP indicator light comes on.

      9. Turn the ignition switch off.

        Note

        If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P (for CVT model) or the parking brake applied (for manual transaxle model) after zero point of the yaw rate and deceleration 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 deceleration 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 deceleration sensor.


      1. Turn the ignition switch off.

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

      3. for CVT model:

        Check that the shift lever is in P, and apply the parking brake.

        for Manual Transaxle model:

        Check that the shift lever is in N, and apply the parking brake.

        Note

        DTCs C1210 (zero point calibration of yaw rate sensor undone) and C1336 (zero point calibration of deceleration sensor undone) will be recorded if the shift lever is not in P (for CVT model) or the parking brake is not applied (for manual transaxle model) Click here.

      4. Connect the GTS to the DLC3.

      5. Turn the ignition switch to ON.

      6. Turn the GTS on.

      7. Switch the skid control ECU to Test Mode using the GTS. Enter the following menus: Chassis / ABS/VSC/TRC / Test Mode.

      8. After the Test Mode has been entered, keep the vehicle stationary on a level surface for 5 seconds or more.

      9. Check that the ABS warning and SLIP indicator lights come on for several seconds and then blink in Test Mode.

        Tech Tips


        • The TRC OFF indicator light remains on during Test Mode because traction control is prohibited.

        • If the SLIP indicator 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.

      10. Turn the ignition switch off and disconnect the GTS.

  3. OBTAIN ZERO POINT OF YAW RATE AND DECELERATION SENSOR (When Using SST Check Wire)

    Note


    • While obtaining the zero points, 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 in the straight-ahead position.

      3. for CVT model:

        Check that the shift lever is in P, and apply the parking brake.

        for Manual Transaxle model:

        Check that the shift lever is in N, and apply the parking brake.

      4. Turn the ignition switch to ON.

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

      6. A011AR0E04
        Text in Illustration
        *1 DLC3

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

        SST
        09843-18040

      7. Check that the SLIP indicator light comes on.

        Note

        If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P (for CVT model) or the parking brake applied (for manual transaxle model) after the zero point of the yaw rate and deceleration 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 deceleration 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 deceleration sensor.


      1. Turn the ignition switch off.

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

      3. for CVT model:

        Check that the shift lever is in P, and apply the parking brake.

        for Manual Transaxle model:

        Check that the shift lever is in N, and apply the parking brake.

        Note

        DTCs 36 (zero point calibration of yaw rate sensor undone) and 39 (zero point calibration of deceleration sensor undone) will be recorded if the shift lever is not in P (for CVT model) or the parking brake is not applied (for manual transaxle model) Click here.

      4. A011AR0E04
        Text in Illustration
        *1 DLC3

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

        SST
        09843-18040

      5. Turn the ignition switch to ON.

      6. After Test Mode has been entered, keep the vehicle stationary on a level surface for 5 seconds or more.

      7. Check that the ABS warning and SLIP indicator lights come on for several seconds and then blink in Test Mode.

        Tech Tips


        • The TRC OFF indicator light remains on during Test Mode because traction control is prohibited.

        • If the SLIP indicator 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 SST from the DLC3.