Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics): Calibration

1. After replacing the VSC relevant components or performing "Front wheel alignment adjustment", clearing and reading the sensor calibration data are necessary.
2. Follow the chart to perform calibration.
   Fig 1: Replacing Parts And Necessary Operation Description Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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. Clear the zero point calibration using the SST check wire.

   SST 09843-18040

   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.
      Fig 2: Identifying DLC3 Connectors

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Check that the warning light indicates the normal system code.
   4. Remove the SST.
      Fig 3: Identifying Warning Light Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

After replacing the ABS & TRACTION actuator assy, make sure to perform yaw rate sensor and deceleration sensor zero point calibration.

1. Shift the shift lever to the P position.
2. Clear the zero point calibration.
3. Procedures for test mode:
   1. Turn the ignition switch off
   2. Apply the parking brake (Parking brake switch ON).
   3. Using SST, connect terminals TS and CG of the DLC3.

      SST 09843-18040

   4. Check that the steering wheel is in the straight-ahead position and move the shift lever to the P position.
   5. Turn the ignition switch to the ON position.
4. Keep the vehicle in the stationary condition on a level surface for 2 seconds or more.
5. Check that the VSC warning light blinks.

HINT:

• If the VSC warning light does not blink, perform the 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 once.
  Fig 4: Identifying DLC3 Connector Terminals

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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. Clearing the DTCs.
   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.

   HINT:

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

   Fig 5: Connecting Hand-Held Tester To DLC3 (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. PERFORM ZERO POINT CALIBRATION OF YAW RATE SENSOR AND DECELERATION SENSOR (USING HAND-HELD TESTER) 
   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. Check that the steering wheel is in the straight-ahead position and move the shift lever to the P position.
   2. Connect the hand-held tester to the DLC3.
   3. Turn the ignition switch to the ON position.
   4. Operate the hand-held tester to test mode (SIGNAL CHECK).
   5. Obtain the zero point of the yaw rate sensor and deceleration sensor:
      1. Keep the vehicle in the stationary condition on a level surface for 2 seconds or more.
      2. Check that the VSC warning light blinks.

      HINT:

      • If the VSC warning light does not blink, perform the 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 once.
   6. Turn the ignition switch off.
      Fig 6: Connect the hand-held tester to the DLC3 (2 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002