Vehicle Stability Control System: Calibration

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

DESCRIPTION

After replacing components relating to the VSC or performing "Front wheel alignment adjustment", clear and read the sensor calibration data.

Follow the chart to perform calibration.

REPLACING PARTS / OPERATION

Replacing Parts / Operation	Necessary Operation
Skid Control ECU	Yaw rate and deceleration sensor zero point calibration.
Yaw Rate Sensor	Clearing zero point calibration data Yaw rate and deceleration sensor zero point calibration
Front Wheel Alignment Adjustment	Clearing zero point calibration data Yaw rate and deceleration sensor zero point calibration

CLEAR ZERO POINT CALIBRATION DATA (When Using Intelligent Tester)
1. Clear the zero point calibration data.
  1. Connect the intelligent tester (with CAN VIM) to the DLC3.
  2. Turn the ignition switch ON.
    
    Fig 1: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Operate the intelligent tester to erase the codes (select "Reset Memory").
    HINT:
    
    Refer to intelligent tester operator's manual for further details.
  4. Using the intelligent tester, perform the zero point calibration of the yaw rate and deceleration sensor.
    
    Fig 2: Displaying Diagnostic Menu
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    CAUTION: If the ignition switch is turned ON for more than 15 seconds with the shift lever in the P position after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under this condition, the skid control ECU will recognize that zero point calibration of the acceleration sensor is not completed and will indicate that there is a malfunction in the VSC system using the indicator light.
PREFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR (When Using Intelligent Tester)
NOTE:
- While obtaining the zero point, do not vibrate the vehicle by tilting, moving or shaking it and keep it stationary. (Do not start the engine.)
- Perform this on a level surface (with an inclination of less than 1°).
1. Procedures for Test Mode.
  1. Check that the shift lever is in the P position and apply the parking brake.
    NOTE: DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not the P position (see DTC C1210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE ).
  2. Connect the intelligent tester (with CAN VIM) to the DLC3.
  3. Turn the ignition switch ON.
    
    Fig 3: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Set the intelligent tester to test mode (select "Test Mode").
    HINT:
    
    Refer to intelligent tester operator's manual for further details.
  Fig 4: Displaying Diagnostic Menu
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Obtain the zero point of the yaw rate and deceleration sensor.
  1. Keep the vehicle stationary on a level surface for 2 seconds or more.
  2. Check that the VSC warning light blinks as shown in Fig 5.
    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 test mode.
    - Calibration cannot be performed again until the stored data is cleared once.
    Fig 5: Identifying Blinking Pattern
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Turn the ignition switch OFF.
CLEAR ZERO POINT CALIBRATION DATA (When not Using Intelligent Tester)
1. Clear the zero point calibration data.
  1. Turn the ignition switch ON.
  2. The warning light and indicator light come on for 3 seconds to indicate that the initial check is completed.
  3. Using SST, connect and disconnect terminals 12 (TS) and 4 (CG) of the DLC3 4 times or more within 8 seconds.
    
    Fig 6: Identifying DLC3 Connector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09843-18040
  4. Check that the VSC warning light comes on.
  5. Remove SST from the terminals of the DLC3.
  6. Using a check wire, perform the zero point calibration of the yaw rate and deceleration sensor.
    CAUTION: If the ignition switch is turned ON for more than 15 seconds with the shift lever in the P position after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under this condition, the skid control ECU will recognize that zero point calibration of the acceleration sensor is not completed and will indicate that there is a malfunction in the VSC system using the indicator light.
PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR (When not Using Intelligent Tester)
NOTE:
- While obtaining the zero point, do not vibrate the vehicle by tilting, moving or shaking it and keep it stationary. (Do not start the engine.)
- Perform this on a level surface (with an inclination of less than 1°).
1. Procedures for Test Mode.
  1. Turn the ignition switch OFF.
  2. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
    
    Fig 7: Identifying DLC3 Connector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09843-18040
  3. Check that the shift lever is in the P position and apply the parking brake.
    NOTE: DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not the P position (see DTC C1210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE ).
2. Obtain the zero point of the yaw rate and deceleration sensor.
  1. Turn the ignition switch ON.
  2. Keep the vehicle stationary on a level surface for 2 seconds or more.
  3. Check that the VSC warning light blinks as shown in Fig 8.
    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 test mode.
    - Calibration cannot be performed again until the stored data is cleared once.
    Fig 8: Identifying Blinking Pattern (Test Mode)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Turn the ignition switch OFF.