Vehicle Stability Control System (for Vacuum Brake Booster)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): CALIBRATION

1. 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.





2. CLEAR ZERO POINT CALIBRATION DATA (WHEN USING TECHSTREAM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Operate the Techstream to clear the codes (select "Reset Memory").

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

3. PERFORM ZERO POINT CALIBRATION OF MASTER CYLINDER PRESSURE SENSOR AND DECELERATION SENSOR (WHEN USING TECHSTREAM)

NOTICE:
* 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.
* While obtaining the zero point, do not depress the brake and accelerator pedal.
* Obtain the zero point on a level surface (with an inclination of less than 1°).
(a) Enter Test Mode.

(1) Turn the ignition switch off.

(2) Check that the shift lever is in P or N and apply the parking brake.

CAUTION:
Application of the parking brake is not necessary for entering test mode. However, apply the parking brake for safety.

(3) Connect the Techstream to the DLC3.

(4) Turn the ignition switch to ON.

NOTICE:
Do not start the engine.

(5) Set the Techstream to test mode (select "Test Mode").

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

(b) Obtain the zero points of the master cylinder pressure sensor and deceleration sensor.

(1) Keep the vehicle stationary on a level surface for 1 second or more.

HINT
* 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.
(2) Turn the ignition switch off.

4. CLEAR ZERO POINT CALIBRATION DATA (WHEN USING SST CHECK WIRE)

(a) Turn the ignition switch to ON.

(b) Using SST, connect and disconnect terminals 12 (TS) and 4 (CG) of the DLC3 4 times or more within 8 seconds.





SST : 09843-18040

(c) Check that the VSC OFF indicator light comes on.

(d) Using a check wire, perform the zero point calibration of the deceleration sensor.

5. PERFORM ZERO POINT CALIBRATION OF MASTER CYLINDER PRESSURE SENSOR AND DECELERATION SENSOR (WHEN USING SST CHECK WIRE)

NOTICE:
* 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.
* While obtaining the zero point, do not depress the brake pedal.
* Obtain the zero point on a level surface (with an inclination of less than 1°).
(a) Enter Test Mode.

(1) Turn the ignition switch off.

(2) Check that the shift lever is in P or N and apply the parking brake.

CAUTION:
Application of the parking brake is not necessary for entering test mode. However, apply the parking brake for safety.

(3) Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.





SST : 09843-18040

(4) Turn the ignition switch to ON.

NOTICE:
Do not start the engine.

(b) Obtain the zero points of the master cylinder pressure sensor and deceleration sensor.

(1) Keep the vehicle stationary on a level surface for 1 second or more.

HINT
* 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.
(2) Turn the ignition switch off.

6. PERFORM ZERO POINT CALIBRATION OF STEERING ANGLE SENSOR

NOTICE:
Complete the adjustment of the steering wheel and wheel alignment, and then perform zero point calibration of the steering angle sensor. If the order is reversed, the steering wheel and wheel alignment will become misaligned.

(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.

(b) Check that the centered position of the steering wheel is correctly set while driving straight ahead.

HINT
If front wheel alignment and steering position are adjusted as a result of abnormal centered position of the steering wheel, acquire yaw rate and acceleration sensor zero point again after the adjustments are completed.