Vehicle Stability Control System: Calibration

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

DESCRIPTION

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.

Fig 1: Jiggling Connector Or Wire Harness Between ECU And Sensors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PARTS OPERATION REFERENCE CHART

Replacing Parts / Operation	Necessary Operation
Skid control ECU	Yaw rate and acceleration sensor zero point calibration.
Yaw rate and acceleration sensor	Clearing zero point calibration data. Yaw rate and acceleration sensor zero point calibration.
Front wheel alignment adjustment	Clearing zero point calibration data. Yaw rate and acceleration sensor zero point calibration.

OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (INTELLIGENT TESTER)
NOTE:
- While obtaining the zero point, keep the vehicle stationary and do not; vibrate, tilt, move, or shake it. (Do not start the engine.)
- Be sure to perform this procedure on a level surface (with AH inclination of less than 1 degree).
1. Clear the zero point calibration data.
  1. Turn the ignition switch off.
  2. Connect the intelligent tester to the DLC3.
  3. Check that the storing wheel is centered and move the shift lever to the P position.
  4. Turn the ignition switch to the ON position.
    
    Fig 2: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Operate the intelligent tester to erase the codes (select "RESET MEMORY").
    HINT:
    
    Refer to the intelligent tester operator's manual for further details.
  6. Turn the ignition switch off.
    
    Fig 3: Intelligent Tester Display - Reset Memory
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NOTE: If the ignition switch is turned to the ON position 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 these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the warning lights.
2. Perform zero point calibration of the yaw rate and acceleration sensor.
  1. Turn the ignition switch off.
  2. Check that the steering wheel is centered and move the shift lever to the P position.
    NOTE: DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (See DTC 01210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE ).
  3. Connect the intelligent tester to the DLC3.
  4. Turn the ignition switch to the ON position.
    
    Fig 4: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Set the intelligent tester to Test Mode (select "TEST MODE").
    HINT:
    
    Refer to the intelligent tester operator's manual for further details.
  6. After the Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.
    
    Fig 5: Intelligent Tester Display - TEST MODE
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. Check that the VSC warning light blinks (Test Mode).
    HINT:
    - If the VSC warning light does not blink, 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.
  8. Turn the ignition switch off and disconnect the intelligent tester.
    
    Fig 6: ABS Warning Light Blinking Pattern
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OBTAIN ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (SST CHECK WIRE)
NOTE:
- While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
- Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).
1. Clear the zero point calibration data.
  1. Turn the ignition switch off.
  2. Check that the steering wheel is centered and move the shift lever to the P position.
  3. Turn the ignition switch to the ON position.
  4. The warning light and indicator light come on for 3 seconds to indicate that the initial check is completed.
  5. Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.
    SST 09843-18040
    
    Fig 7: Identifying CG And TC Terminals Of DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Check that the warning light indicates the normal system code.
    NOTE: If the ignition switch is turned to the ON position 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 these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the warning lights.
2. Perform zero point calibration of the yaw rate and acceleration sensor.
  
  Fig 8: Warning Light Blinking Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Turn the ignition switch off.
  2. Check that the steering wheel is centered and move the shift lever to the P position.
    NOTE: DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in the P position (See DTC 01210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C1336/39 ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE ).
  3. Using SST, connect terminals TS and CG of the DLC3.
    SST 09843-18040
  4. Turn the ignition switch to the ON position.
  5. Keep the vehicle stationary on a level surface for 2 seconds or more.
    
    Fig 9: Identifying CG And TC Terminals Of DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Check that the VSC warning light blinks (Test Mode).
    HINT:
    - If the VSC warning light does not blink, 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.
  7. Turn the ignition switch off and disconnect the SST from the DLC3.
    
    Fig 10: VSC Warning Light Blinking Pattern In Test Mode
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002