POWER STEERING SYSTEM, Diagnostic DTC:C1582

DTC Code DTC Name
C1582 Assist Map Number Mismatch

DESCRIPTION

When an incorrect ECM, an incorrect main body ECU (multiplex network body ECU) or an incorrect skid control ECU (brake actuator assembly) is installed after the assist map has been written the power steering ECU assembly, then DTC C1582 is stored because the data does not match the vehicle specifications.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
C1582 Assist Map Number Mismatch Assist map number mismatch

  • CAN communication system

  • Incorrect ECM

  • Incorrect main body ECU (multiplex network body ECU)

  • Incorrect skid control ECU (brake actuator assembly)

  • Power steering ECU assembly

 EPS Warning Light: Does not come on Clear assist map and assist map written -

CAUTION / NOTICE / HINT

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

Tech Tips

The related parts store information necessary for assist map writing.

Related Part:


  • ECM

  • Main body ECU (Multiplex network body ECU)

  • Skid control ECU (Brake actuator assembly)

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs.

      Click here

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

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK RELATED PART


    1. Check if any of the parts listed below have been replaced with an incorrect part in the past.

      Related Part ECM
      Main body ECU (Multiplex network body ECU)
      Skid control ECU (Brake actuator assembly)

      Note

      When removing a related part to check it, be sure to follow the appropriate procedures and precautions.


    2. When DTC C1582 is output when parts have not been exchanged, replace the power steering ECU assembly as it may have an internal malfunction.

      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

      Result
      Result Proceed to
      Part with incorrect part number is installed. A
      Parts with the correct part number are installed, or a related part and power steering ECU assembly have not been replaced. B

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    A

  3. REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER


    1. Replace the related parts with ones that have the correct part number.


      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Chassis > EMPS > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    A

    END

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here