C1526

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for 2AZ-FE): C1516,C1526: Torque Sensor Zero Point Adjustment Incomplete

DTC C1516 - Torque Sensor Zero Point Adjustment Incomplete

DTC C1526 - Rotation Angle Sensor Initialization Incomplete

DESCRIPTION

These DTCs do not indicate a malfunction. The power steering ECU outputs these DTCs when it determines that the rotation angle sensor value initialization and torque sensor zero point calibration are incomplete.






INSPECTION PROCEDURE
NOTE: If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration Programming and Relearning.

PROCEDURE

1. CLEAR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
2. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT
(a) Initialize the rotation angle sensor value and calibrate the torque sensor zero point Programming and Relearning.
NEXT -- Continue to next step.
3. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result:





HINT:
- *1: The power steering ECU must be replaced if DTC C1516 or C1526 is still output even after the torque sensor zero point calibration is performed 3 times.
- *2: Perform the torque sensor zero point calibration again if DTC C1516 or C1526 is still output even after the calibration is performed once or twice.

C -- END
B -- PERFORM ZERO POINT CALIBRATION AGAIN (TORQUE SENSOR)
A -- Continue to next step.
4. REPLACE POWER STEERING ECU
(a) Replace the power steering ECU Removal.
NEXT -- Continue to next step.
5. CLEAR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT
(a) Initialize the rotation angle sensor value and calibrate the torque sensor zero point Programming and Relearning.
NEXT -- Continue to next step.
7. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result:





HINT:
- *1: The steering column assembly must be replaced if DTC C1516 or C1526 is still output even after the torque sensor zero point calibration is performed 3 times.
- *2: Perform the torque sensor zero point calibration again if DTC C1516 or C1526 is still output even after the calibration is performed twice.
NOTE: If replacing the steering column assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Programming and Relearning.

C -- END
B -- PERFORM ZERO POINT CALIBRATION AGAIN (TORQUE SENSOR)
A -- REPLACE STEERING COLUMN ASSEMBLY