DESCRIPTION

After replacing the relevant VSC components, clear the sensor calibration data and perform calibration.

Fig 1: Checking Connector Wire

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COMPONENTS OPERATION CHART

Replacement/Adjustment Part	Necessary Operation
Master cylinder solenoid (Skid control ECU)	Yaw rate and G sensor zero point calibration
Yaw rate and G sensor	Clearing zero point calibration data Yaw rate and G sensor zero point calibration

CLEAR ZERO POINT CALIBRATION (SST CHECK WIRE)
After replacing the yaw rate and G sensor, make sure to clear the zero point calibration data in the skid control ECU and perform zero point calibration.
1. Turn the engine switch on (IG).
2. Using SST, connect and disconnect terminals 12 (TS) and 4 (CG) of the DLC3 4 times or more within 8 seconds.
  SST 09843-18040
  
  Fig 2: Identifying DLC3 Connector Terminal
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that "DIAG VSC OK" is displayed on the multi-information display and check that the ABS warning light outputs the normal system code.
4. Using a check wire, perform zero point calibration of the yaw rate and G sensor.
PERFORM ZERO POINT CALIBRATION OF YAW RATE AND G SENSOR (SST CHECK WIRE)
After replacing the master cylinder solenoid and/or yaw rate and G sensor, make sure to perform yaw rate and G sensor zero point calibration.

Fig 3: ABS Warning Light Blinking Pattern
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

Safety Warning

Vehicle Stability Control System: Calibration