POWER STEERING SYSTEM, Diagnostic DTC:C1582, C1583

DTC Code DTC Name
C1582 Assist Map Number Mismatch
C1583 Assist Map Selection Error

DESCRIPTION

If an incorrect power steering ECU assembly or combination meter assembly is installed, DTC C1582 and C1583 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

  • Combination meter assembly (wrong assembly)

  • Power steering ECU assembly
C1583 Correct information cannot be received.

  • CAN communication system

  • Combination meter assembly (wrong assembly)

  • Power steering ECU assembly

CAUTION / NOTICE / HINT

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 GTS, 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 COMBINATION METER ASSEMBLY


    1. Check if a combination meter assembly that complies with the vehicle specifications is installed.


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. CHECK ASSIST MAP


    1. Check for assist map.

      OK
      MAP2 is output.

    NG

    ASSIST MAP WRITING Click here

    OK

  4. CLEAR ASSIST MAP

    Tech Tips

    Repeat the clear assist map process 2 or 3 times and check the results.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / EMPS / Utility / Assist Map Confirmation / Clear.

    5. Clear the assist map following the instructions on the GTS screen.

    6. Start the engine.

      Tech Tips

      If no assist map is currently written, it will be written in the ECU when the engine is started while the vehicle is stationary.

    7. Enter the following menus: Chassis / EMPS / Utility / Assist Map Confirmation / Clear.

    8. Check that "MAP2" is displayed on the GTS screen.

      OK
      MAP2 is output.

    OK

    END

    NG

    REPLACE POWER STEERING ECU ASSEMBLY Click here