C1516

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1516, C1526: Torque Sensor Zero Point Adjustment 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

NOTICE:
If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor value 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 VALUE 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 rotation angle sensor value initialization and torque sensor zero point calibration is performed 3 times.
- *2: Perform the rotation angle sensor value initialization and torque sensor zero point calibration again if DTC C1516 or C1526 is still output even after the rotation angle sensor value initialization and calibration is performed once or twice.

C -- END

B -- PERFORM ROTATION ANGLE SENSOR VALUE INITIALIZATION AND ZERO POINT CALIBRATION AGAIN Programming and Relearning
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 VALUE 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 rotation angle sensor value initialization and torque sensor zero point calibration is performed 3 times.
- *2: Perform the rotation angle sensor value initialization and torque sensor zero point calibration again if DTC C1516 or C1526 is still output even after the rotation angle sensor value initialization and calibration is performed twice.

NOTICE:
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.

D -- END

C -- PERFORM ROTATION ANGLE SENSOR VALUE INITIALIZATION AND ZERO POINT CALIBRATION AGAIN Programming and Relearning

B -- REPLACE STEERING COLUMN ASSEMBLY Removal

A -- REPLACE STEERING COLUMN ASSEMBLY Removal