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Home >> Toyota >> 2007 >> Sequoia 2WD V8-4.7L (2UZ-FE) >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Programming and Relearning >> Calibration
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Calibration

CALIBRATION

1. ZERO POINT CALIBRATION OF MASTER CYLINDER PRESSURE, YAW RATE AND DECELERATION SENSORS

HINT: When having replaced the master cylinder pressure, yaw rate and deceleration sensors and/or the ECU, make sure to perform master cylinder pressure, yaw rate and deceleration sensor's zero point calibration.

NOTE:
- While obtaining the zero point, do not vibrate the vehicle by tilting, moving or shaking it and keep it in a stationary condition. (Do not start the engine.)
- Be sure to do this on a level surface (within an inclination of 1°).




a. Perform master cylinder pressure, yaw rate and deceleration sensors zero point calibration.

1. Using SST, connect terminals Ts and CG of the DLC3.

SST 09843-18040

2. Shift the shift lever to the P position.
3. Turn the ignition switch to the ON position.
4. Keep the vehicle in a stationary condition on a level surface for 4 sec. or more.
5. Keep your foot off the brake pedal. Do not leave 4WD vehicles in the L4 position.
6. Press the center diff. lock (TRAC OFF) switch 3 times within 3 seconds.
7. Check that the VSC buzzer sounds for 3 seconds.

HINT:
- If the VSC buzzer does not sound, do the zero point calibration again and/or check the VSC buzzer circuit.
- If the VSC buzzer does not sound, check for yaw rate and deceleration sensor failure.

8. Turn the ignition switch OFF.
9. Disconnect terminals Ts and CG of the DLC3.

b. Perform steering angle sensor zero point calibration.

This calibration is carried out automatically by Following procedures:

1. Make sure the system is not in sensor check mode.
2. Calibrate the steering angle sensor by driving the vehicle in a straight line at more than 7 MPH (12 km/h) for 5 seconds.
3. Stop the vehicle. Use the intelligent tester to check that the steering angle value on the DATA LIST increases when the steering wheel is turned left, and decreases when turned right.
4. Turn the ignition switch OFF.

HINT:
- If the steering angle reads 1,150° when the steering wheel is in any position, the sensor has not been calibrated.
- Carry out the calibration procedure again.
- DTC C1362/36 will be output from the skid control ECU if the skid control ECU is replaced with a new one and/or sensor calibration is not performed.
- DTC C1362/36 will be deleted when sensor calibration is complete.
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