Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Steering System
- ROTATION ANGLE SENSOR VALUE INITIALIZATION AND TORQUE SENSOR ZERO POINT CALIBRATIONNOTE:
Clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point if any of the following has occurred:
- The power steering ECU has been replaced.
- The power steering gear assembly has been replaced.
- Steering effort differs between left and right.
- Inspection before calibration.
- Connect the Techstream to the DLC3.
- Turn the power switch ON (IG).
- Turn the Techstream on.
Select "IG Supply" from the Data List.
- Check the IG power supply voltage on the Techstream screen.
EMPSTester Display Measurement Item/Range Normal Condition Diagnostic Note IG Supply ECU power source voltage/
Min.: 0 V, Max.: 25.5 VPower switch ON (IG): 11 to 14 V When malfunction occurs, problem may be ECU power supply Standard voltage
11 to 14 V
NOTE:If the IG power supply voltage is less than 11 V, calibration cannot be performed. In this case, charge or replace the auxiliary battery, and then perform calibration.
- Clearing rotation angle sensor calibration value, rotation angle sensor value initialization, and torque sensor zero point calibration.NOTE:
- If DTC C1516 (Torque Sensor Zero Point Adjustment Incomplete) is stored, the torque sensor zero point cannot be calibrated. Clear the DTC before starting calibration.
- If DTC C1526 (Motor Rotation Angle Sensor Initialization Incomplete) is stored, the rotation angle sensor value cannot be initialized. Clear the DTC before starting initialization.
- Connect the Techstream to the DLC3.
- Turn the power switch ON (IG).
- Turn the Techstream on.
Select "Torque Sensor Adjustment".
- Follow the procedures on the Techstream display to clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point.NOTE:
- When initializing the rotation angle sensor value, observe the following to stabilize sensor voltage:
After turning the power switch ON (IG), wait for at least 2.5 seconds before turning the steering wheel. Do not turn the steering wheel quickly.
- The steering wheel will vibrate during torque sensor zero point calibration. Do not touch the steering wheel while it is vibrating or for 2 seconds after it stops.
- When initializing the rotation angle sensor value, observe the following to stabilize sensor voltage:
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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