lemon-mirror:
Home >> Scion >> 2013 >> tC Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System (Diagnostics - Introduction) >> Vehicle Stability Control System >> Calibration >> Calibration

Vehicle Stability Control System: Calibration: Calibration

  1. DESCRIPTION 
    • After replacing VSC-related components, clear and read the sensor calibration data.
    • Follow the chart to perform calibration.
    Part Replaced Necessary Operation
    Brake actuator assembly (Skid control ECU)
    1. Clearing zero point calibration data
    2. Yaw rate and acceleration sensor zero point calibration
    3. Steering angle sensor zero point calibration
    Yaw rate and acceleration sensor
    1. Clearing zero point calibration data
    2. Yaw rate and acceleration sensor zero point calibration
    3. Steering angle sensor zero point calibration
    Steering angle sensor (Spiral with sensor cable sub-assembly)
    1. Clearing zero point calibration data
    2. Yaw rate and acceleration sensor zero point calibration
    3. Steering angle sensor zero point calibration
  2. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR AND STEERING ANGLE SENSOR (When Using the Techstream) 
    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%).
    1. Clear the zero point calibration data.
      1. Turn the ignition switch off.
      2. Check that the steering wheel is centered.
      3. for Manual Transaxle:

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

        for Automatic Transaxle:

        Check that the shift lever is in P.

      4. Connect the Techstream to the DLC3.
      5. Turn the ignition switch to ON.
      6. Turn the Techstream on.
      7. Enter the following menus: Chassis / ABS/VSC/TRAC / Reset Memory.
      8. Check that the slip indicator light comes on.
      9. 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 centered.
      3. for Manual Transaxle:

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

        for Automatic Transaxle:

        Check that the shift lever is in P.

        NOTE:

        DTCs C1210 (Zero Point Calibration of Yaw Rate Sensor Undone) and C1336 (Zero Point Calibration of Acceleration Sensor Undone) are stored if the shift lever is not in P (for Automatic Transaxle) or the parking brake is not applied (for Manual Transaxle).

      4. Connect the Techstream to the DLC3.
      5. Turn the ignition switch to ON.
      6. Turn the Techstream on.
      7. Switch the skid control ECU to test mode using the Techstream.

        Enter the following menus: Chassis / ABS/VSC/TRAC / Test Mode.

      8. Keep the vehicle stationary on a level surface for 5 seconds or more.
      9. Check that the slip indicator light blinks in the test mode pattern (0.125 seconds on and 0.125 seconds off).

        HINT: 

        • If the slip indicator light does not blink, perform zero point calibration again.
        • Zero point calibration is performed only once after the system enters test mode.
        • Calibration cannot be performed again until the stored data is cleared.
      10. Turn the ignition switch off and disconnect the Techstream.
      11. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for approximately 5 seconds.
  3. OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR AND STEERING ANGLE 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%).
    1. Clear the zero point calibration data.
      1. Turn the ignition switch off.
      2. Check that the steering wheel is centered.
      3. for Manual Transaxle:

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

        for Automatic Transaxle:

        Check that the shift lever is in P.

      4. Turn the ignition switch to ON.
      5. The ABS warning light and slip indicator light come on for 3 seconds to indicate that the initial check is completed.
      6. Using SST, connect and disconnect terminals 12 (TS) and 4 (CG) of the DLC3 4 times or more within 8 seconds.
        Fig 1: Identifying Terminals 12 (TS) And 4 (CG) Of DLC3
        GTY211847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of DLC3
        • SST: 09843-18040 
      7. Check that the slip indicator light comes on.
    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.
      3. for Manual Transaxle:

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

        for Automatic Transaxle:

        Check that the shift lever is in P.

        NOTE:

        DTCs 36 (Zero Point Calibration of Yaw Rate Sensor Undone) and 39 (Zero Point Calibration of Acceleration Sensor Undone) are stored if the shift lever is not in P (for Automatic Transaxle) or the parking brake is not applied (for Manual Transaxle).

      4. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
        Fig 2: Identifying Terminals 12 (TS) And 4 (CG) Of DLC3
        GTY211847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of DLC3
        • SST: 09843-18040 
      5. Turn the ignition switch to ON.
      6. Keep the vehicle stationary on a level surface for 5 seconds or more.
      7. Check that the slip indicator light blinks in the test mode pattern (0.125 seconds on and 0.125 seconds off).

        HINT: 

        • If the slip indicator light does not blink, perform zero point calibration again.
        • Zero point calibration is performed only once after the system enters 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.
      9. Drive the vehicle straight ahead at 35 km/h (22 mph) or more for approximately 5 seconds.
· About lemon-mirror