POWER STEERING SYSTEM, Diagnostic DTC:C1581/26

DTC Code DTC Name
C1581/26 Assist Map Number Un-Writing

DESCRIPTION

When a map is not recorded in the steering column assembly (power steering ECU), then this DTC is stored.

DTC No. DTC Detection Condition Trouble Area
C1581/26 Assist map not written in power steering ECU

  • Assist map is not written

  • CAN communication system

  • SFI system (ECD system)

  • Vehicle stability control system

  • Steering column assembly

INSPECTION PROCEDURE

Note

When the steering column assembly is replaced, perform the assist map writing 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 C1581/81 is not output A
      DTC C1581/81 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 ECM


    1. Check that the correct ECM is installed.

      OK
      The correct ECM is installed.
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE engine) B
      NG (for 1NR-FE engine) C
      NG (for 1ND-TV engine) D

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    A

  5. CHECK SFI SYSTEM (ECD SYSTEM)


    1. Check for DTCs of the SFI system or ECD system.

      Engine Type See Page
      1KR-FE engine

      Click here

      1NR-FE engine

      Click here

      1ND-TV engine

      Click here

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output (for 1KR-FE engine) B
      DTCs are output (for 1NR-FE engine) C
      DTCs are output (for 1ND-TV engine) D

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    D

    GO TO ECD SYSTEM Click here

    A

  6. CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)


    1. Check that the correct brake actuator assembly (skid control ECU) is installed.

      OK
      The correct brake actuator assembly (skid control ECU) is installed.

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    OK

  7. 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 STEERING COLUMN ASSEMBLY Click here