2008 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Vehicle Stability Control System: Calibration

  1. DESCRIPTION 
    Fig 1: Checking Wire Harness
    G04832151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • After replacing the VSC relevant components or performing "Front wheel alignment adjustment", clearing and reading the sensor calibration data are necessary.
    • Follow the chart to perform calibration.

      HINT:

      For a rear air suspension vehicle, it is necessary to obtain zero point calibration data (again) after adjusting vehicle height.

      OPERATION CHART

      Replacement/Adjustment Parts Necessary Operations
      Master cylinder solenoid (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
      1. Clearing zero point calibration data
      2. Yaw rate and acceleration sensor zero point calibration
  2. CLEAR ZERO POINT CALIBRATION (SST CHECK WIRE) 

    HINT:

    After replacing the yaw rate and acceleration sensor, make sure to clear zero point calibration data in the skid control ECU and perform zero point calibration.

    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.

      SST 09843-18040 

      Fig 2: Identifying DLC3 Connector Terminals
      G04832156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the warning light indicates the normal system code.
    4. Remove the SST from the terminals of the DLC3.
    5. Using a check wire, perform zero point calibration of the yaw rate and acceleration sensor.
  3. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR (SST CHECK WIRE) 

    After replacing the master cylinder solenoid and/or yaw rate and acceleration sensor, make sure to perform yaw rate and acceleration sensor zero point calibration.

    Fig 3: Identifying Blinking Pattern
    G04965377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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