Electronically Controlled Brake System: Calibration

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.

1. Connect Techstream to the DLC3.
2. Turn the ignition switch on.
3. Operate Techstream to erase the codes (select "Reset Memory").

   HINT:

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

4. Using Techstream, perform zero point calibration of the yaw rate and deceleration sensor.

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 and apply the parking brake.
      NOTE: DTC C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position.
   2. Connect Techstream to the DLC3.
   3. Turn the ignition switch on.
   4. Set Techstream to test mode (select "Test Mode").

      HINT:

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

2. Obtain the zero point of the yaw rate and deceleration sensor.
   1. Keep the vehicle in the stationary condition on a level surface for 2 seconds or more.
   2. Check that the ABS and brake control warning lights blink and "CHECK VSC SYSTEM" is displayed on the multi information display (test mode).

      HINT:

      • If the ABS and brake control warning lights do not blink and/or "CHECK VSC SYSTEM" is not displayed on the multi information display, 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 once.
      Fig 1: ABS And Brake Control Warning Lights Blinking Pattern
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the ignition switch off and disconnect Techstream.

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

   SST 09843-18040 

   Fig 2: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that no codes other than ABS code 42, VSC code 45 and Electronically Controlled Brake code 48, 66, or 95 are stored in the diagnostic system.

   HINT:

   The ABS warning light and multi information display do not indicate the normal system code.

   Fig 3: ABS And Electronically Controlled Brake Code Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.

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.
      NOTE: DTC C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position.
      Fig 4: Identifying DLC3 Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Obtain the zero point of the yaw rate and deceleration sensor.
   1. Turn the ignition switch on.
   2. Keep the vehicle in a stationary condition on a level surface for 2 seconds or more.
   3. Check that the ABS and brake control warning lights blink and "CHECK VSC SYSTEM" is displayed on the multi information display (test mode).

      HINT:

      • If the ABS and brake control warning lights do not blink and/or "CHECK VSC SYSTEM" is not displayed on the multi information display, 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 once.
      Fig 5: ABS And Brake Control Warning Lights Blinking Pattern
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the ignition switch off and disconnect the SST from the DLC3.