POWER STEERING SYSTEM, Diagnostic DTC:C1582

DTC Code DTC Name
C1582 Assist Map Number Mismatch

DESCRIPTION

If an incorrect power steering ECU or ECM is installed, DTC C1582 is stored as the vehicle specification and data do not match.

Tech Tips

The assist map is data written in the power steering ECU assembly to control the degree of assistance. The assist map is selected based on the vehicle's specified communication data.

DTC Code DTC Detection Condition Trouble Area
C1582 Data that does not match the vehicle specification is received through CAN communication.

  • CAN communication system

  • ECM (wrong assembly)

  • Power steering ECU assembly (wrong assembly)

INSPECTION PROCEDURE

Note

If the power steering ECU assembly is replaced with a new one, perform rotation angle sensor initialization and torque sensor zero point calibration Click here.

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Using the intelligent tester, check for DTCs and confirm that there are no problems in the CAN communication system Click here.

      OK
      DTC is not output.

    NG

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

    OK

  2. CHECK ENGINE TYPE


    1. Check the engine type.

      Result
      Result Proceed to
      1ZR-FAE A
      2ZR-FAE B
      3ZR-FAE C
      3ZR-FE D

    B

    CHECK ECM Click here

    C

    CHECK ECM Click here

    D

    CHECK ECM Click here

    A

  3. CHECK ECM


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

      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

    REPLACE ECM Click here

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

  4. CHECK ECM


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

      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

    REPLACE ECM Click here

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

  5. CHECK ECM


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

      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

    REPLACE ECM Click here

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

  6. CHECK ECM


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

      Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

    REPLACE ECM Click here

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here