Calibration of Torque Sensor Zero Point

CALIBRATION







1. INITIALIZATION OF TORQUE SENSOR ZERO POINT CALIBRATION SIGNAL

NOTE: Under the following conditions, perform torque sensor zero point calibration after initializing the torque sensor zero point calibration signal in the ECU:
- The steering column assy (containing the torque sensor) has been replaced.
- The power steering ECU assy has been replaced.
- The steering wheel has been replaced.
- The steering gear assy has been replaced.
- There is a difference in steering effort between right and left.

a. Center the steering wheel and align the front wheels straight ahead.
b. Connect the hand-held tester to the DLC3.
c. Turn the power switch on (IG) and then initialize the torque sensor zero point calibration signal by following the tester screen.

NOTE: Do not turn the steering wheel while initializing the zero point calibration signal.

d. Perform steering zero point calibration after turning the power switch off.

NOTE: Zero point calibration cannot be carried out with the power switch on (IG) after initialization of the zero point calibration signal is completed.







2. TORQUE SENSOR ZERO POINT CALIBRATION

a. Center the steering wheel and align the front wheels straight ahead.
b. Connect the hand-held tester to the DLC3.
c. Turn the power switch on (IG) and then perform the zero point calibration by following the tester screen.

NOTE:
- The vehicle is stopped.
- Do not start the engine. (Do not turn the power switch on (READY).)
- Do not turn the steering wheel.
- The vehicle is on level ground.

d. Confirm that no DTCs are output after completing the operation.
1. When DTC C1515 is output, see DTC C1515.
2. When DTC C1516 is output, see DTC 1516.
3. When DTC C1534 is output, see DTC 1534.