Calibration of Torque Sensor Zero Point
CALIBRATION OF TORQUE SENSOR ZERO POINTHINT:
Perform this operation in the following cases.
- When removing and installing "steering wheel", "tilt steering column"and "electric power steering gear".
- When replacing EMPS ECU.
a. Place front wheels and steering wheel facing straight ahead.
b. In case of using TOYOTA hand-held tester:
Perform the torque sensor zero point initialization.
HINT: If the EMPS ECU is replaced, however, this operation is not necessary.
1. Stop the vehicle.
2. Hook up the TOYOTA hand-held tester to the DLC3.
3. Select the "TRQ SENS ADJUST" mode on the TOYOTA hand-held tester.
4. Select the "ZERO POINT INITIALIZE".
5. Following the screen instructions, perform the torque sensor zero point initialization.
HINT: Please refer to the TOYOTA hand-held tester operator's manual for further details.
c. In case of not using TOYOTA hand-held tester:
Perform the torque sensor zero point initialization.
HINT: If the EMPS ECU is replaced, however, this operation is not necessary.
1. Stop the vehicle.
2. Using SST, connect terminals Ts and CG of DLC3.
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3. Using SST, connect terminals Tc and CG of DLC3.
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4. ON and OFF the terminal Tc of DLC3 20 times within 20 seconds.
5. Check that the DTC C1515/15.
d. In case of using TOYOTA hand-held tester:
Perform the torque sensor zero point calibration.
HINT: Don't touch the steering wheel.
1. Select the "TRQ SENS ADJUST" mode on the TOYOTA hand-held tester.
2. Select the "ZERO POINT ADJUST".
3. Following the screen instructions, perform the torque sensor zero point calibration.
HINT: Please refer to the TOYOTA hand-held tester operator's manual for further details.
e. In case of not using TOYOTA hand-held tester:
Perform the torque sensor zero point calibration.
HINT:
- Don't touch the steering wheel.
- Check the DTC except C1515/15 is not output.
1. Stop the vehicle and turn the ignition switch OFF.
2. Using SST, connect terminals Ts and CG of DLC3 and ignition switch ON.
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3. Disconnect the SST.
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