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 recorded in 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

  • Power steering ECU assembly

  • CAN communication system

  • ECM

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication system DTC is output.


      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output (w/o Toyota Safety Sense) B
      CAN communication system DTC is output (w/ Toyota Safety Sense) 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 ECM


    1. Check if an ECM that complies with the vehicle specifications is installed.

      OK
      The ECM that complies with vehicle specifications is installed.
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE) B
      NG (for 2NR-FKE) C
      NG (for 1ND-TV without DPF) D
      NG (for 1ND-TV with DPF) E

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    E

    REPLACE ECM Click here

    A

  3. CHECK VEHICLE TYPE


    1. Check vehicle type.

      Result
      Result Proceed to
      for LHD A
      for RHD B

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here