POWER STEERING SYSTEM, Diagnostic DTC:C1582/26

DTC Code DTC Name
C1582/26 Assist Map Number Mismatch

DESCRIPTION

When an incorrect EV control ECU is installed after the assist map has been written in the power steering ECU assembly, DTC C1582/26 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
C1582/26 Assist Map Number Mismatch Assist map number mismatch

  • CAN communication system

  • Incorrect EV control ECU

  • Power steering ECU assembly

 Off Power switch 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

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs.


      Result
      Result Proceed to
      CAN communication system DTC is not output. A
      CAN communication system DTC is output (for RHD). B
      CAN communication system DTC is output (for LHD). C

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 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 Hybrid vehicle control ECU
      Main body ECU (multiplex network body ECU)
      Skid control ECU (brake booster with master cylinder assembly)

      Note

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

      Click here

      Tech Tips

      When DTC C1582/26 is output when parts have not been exchanged, replace the power steering ECU assembly as it may have an internal malfunction.

      Result
      Proceed to
      All installed related parts have correct part number
      Part with incorrect part number is installed

    All installed related parts have correct part number

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    Part with incorrect part number is installed

    REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER