POWER STEERING SYSTEM (for 2AR without Wireless Door Lock), Diagnostic DTC:C1581

DTC Code DTC Name
C1581 Assist Map Number Un-Writing

DESCRIPTION

This DTC will be stored if the power steering ECU assembly determines that the assist map is not written in the ECU.

DTC No. DTC Detection Condition Trouble Area
C1581 Assist map is not written in power steering ECU assembly

  • CAN communication system

  • SFI system

  • Vehicle stability control system

  • Power steering ECU assembly

INSPECTION PROCEDURE

Note

If the power steering ECU assembly has been replaced with a new one, perform assist map writing and torque sensor zero point calibration Click here.

PROCEDURE


  1. PERFORM ASSIST MAP WRITING


    1. Perform the assist map writing Click here.


    NEXT

  2. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1581 is not output A
      DTC C1581 is output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

    END

  3. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs of the CAN communication system Click here.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  4. CHECK SFI SYSTEM


    1. Check for DTCs of the SFI system Click here.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO SFI SYSTEM Click here

    A

  5. CHECK VEHICLE STABILITY CONTROL SYSTEM


    1. Check the vehicle stability control system Click here.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here