Lexus IS250 · Service Manual STEERING

C1516

Diagnostic trouble codes

DESCRIPTION

These DTCs do not indicate a malfunction. The power steering ECU assembly outputs these DTCs when it determines that rotation angle sensor value initialization and torque sensor zero point calibration are incomplete.
DTC No.
 DTC Detection Condition
 Procedure
C1516
 Steering zero point calibration is incomplete due to the steering wheel being touched during calibration.
 There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and performing zero point calibration.
C1526
 Rotation angle sensor value initialization is incomplete due to the steering wheel being touched during calibration.
 There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and performing rotation angle sensor value initialization.

INSPECTION PROCEDURE


1. CLEAR DTC

NEXT


2. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT

  1. Initialize the rotation angle sensor and calibrate the torque sensor zero point (Click here).


NEXT


3. RECONFIRM DTC

  1. Check for DTCs.

    Result:
    Result
    		 Proceed to
    DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.
    		 A
    DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration once or twice.
    		 B
    Normal system code is output.
    		 C

    HINT:
    Replace the power steering ECU assembly if DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.



 B
Go to step 2

C
END
A


4. REPLACE POWER STEERING ECU ASSEMBLY

  1. Replace the power steering ECU assembly (Click here).


NEXT


5. CLEAR DTC

NEXT


6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT

  1. Initialize the rotation angle sensor value and calibrate the torque sensor zero point (Click here).


NEXT


7. RECONFIRM DTC

  1. Check for DTCs.

    Result:
    Result
    		 Proceed to
    DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.
    		 A
    DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration once or twice.
    		 B
    Normal system code is output.
    		 C

    HINT:
    Replace the power steering gear assembly if DTCs are still output after performing rotation angle sensor value initialization and steering zero point calibration 3 times.

    NOTICE:
    If replacing the power steering gear assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point (Click here).



 B
Go to step 6

C
END
A

REPLACE POWER STEERING GEAR ASSEMBLY


← C1515C1521 →