POWER STEERING SYSTEM, Diagnostic DTC:C1582

DTC Code DTC Name
C1582 Assist Map Number Mismatch

DESCRIPTION

When an incorrect ECM 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. DTC Detection Condition Trouble Area
C1582 Assist map number mismatch

  • CAN communication system

  • Incorrect ECM

  • Power steering ECU assembly

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.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs (See page for with Central Gateway ECU, Click here for without Central Gateway ECU).

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output (w/ Central Gateway ECU). B
      DTCs are output (w/o Central Gateway ECU). C

    B

    GO TO CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (w/o Central Gateway ECU) 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

      Note

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


      • Refer to the following procedures to remove the ECM (for 2AR-FE) Click here.

      • Refer to the following procedures to remove the ECM (for 2GR-FE) Click here.

      • Refer to the following procedures to remove the ECM (for 6AR-FSE) Click here.

      Tech Tips


      • DTC C1582 is stored when a part with an incorrect part number is installed for the related parts listed above.

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

      Result
      Result Proceed to
      All installed related parts have correct part number (for Manual tilt and manual telescopic steering column). A
      All installed related parts have correct part number (for Power tilt and power telescopic steering column). B
      Part with incorrect part number is installed. C

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

    REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER