POWER STEERING SYSTEM, Diagnostic DTC:C1582

DTC Code DTC Name
C1582 Assist Map Number Mismatch

DESCRIPTION

When an incorrect hybrid vehicle control ECU, main body ECU (multiplex network body ECU) or skid control ECU (brake booster with master cylinder assembly) is installed after the assist map has been written to the power steering ECU assembly, DTC C1582 is stored because the information stored in the power steering ECU assembly 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 hybrid vehicle control ECU

  • Incorrect main body ECU (multiplex network body ECU)

  • Incorrect skid control ECU (brake booster with master cylinder assembly)

  • Power steering ECU assembly

 EPS warning light: Does not come on Assist Map Writing is performed or the power switch is turned on (IG) again -

CAUTION / NOTICE / HINT

Note

If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

Click here

Tech Tips

Related parts store information necessary for assist map writing.

Related Part:


  • Hybrid vehicle control ECU

  • Main body ECU (Multiplex network body ECU)

  • Skid control ECU (Brake booster with master cylinder assembly)

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs.

      Tech Tips

      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 the part below has been replaced with an incorrect part in the past.

      Related Part Hybrid vehicle control ECU
      Main body ECU (Multiplex network body ECU)
      Skid control ECU (Brake booster with master cylinder assembly)

      Note

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


    2. When DTC C1582 is output and 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, perform assist map writing.

      Click here

      Result
      Result Proceed to
      The related part has an incorrect part number. A
      The related part has the correct part number, or a related part and power steering ECU assembly have not been replaced. B

    B

    REPLACE POWER STEERING ECU ASSEMBLY for LHD: Click here
    REPLACE POWER STEERING ECU ASSEMBLY for RHD: Click here

    A

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


    1. Replace the related part with one that has the correct part number.


      • Hybrid vehicle control ECU

        Tech Tips

        Click here

      • Main body ECU (Multiplex network body ECU)

        Tech Tips

        Click here

      • Skid control ECU (Brake booster with master cylinder assembly)

        Tech Tips

        for LHD: Click here

        for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTC


    1. Check for DTCs.


      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 for LHD: Click here
    REPLACE POWER STEERING ECU ASSEMBLY for RHD: Click here