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POWER STEERING SYSTEM, Diagnostic DTC:C1582

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DTC Code DTC Name
C1582 Assist Map Number Mismatch
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DESCRIPTION

When an incorrect power management control ECU, an incorrect main body ECU (multiplex network body ECU) or an incorrect skid control ECU (brake booster with master cylinder assembly) 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 power management control ECU

  • Incorrect main body ECU (multiplex network body ECU)

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

  • Power steering ECU assembly
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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).

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

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PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs (Click here).

      Table 1. Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

  2. Click here

    CHECK RELATED PART (POWER MANAGEMENT CONTROL ECU, MAIN BODY ECU AND SKID CONTROL ECU)


    1. Check if any of the parts listed below have been replaced with an incorrect part in the past.

      Related Part Power management 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.


      • Refer to the following procedures to remove the power management control ECU (Click here).

      • Refer to the following procedures to remove the main body ECU (multiplex network body ECU) (Click here).

      • Refer to the following procedures to remove the skid control ECU (brake booster with master cylinder assembly) (Click here).

      Tip:

      • 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.

      Table 2. 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