POWER STEERING SYSTEM(w/ VSC), Diagnostic DTC:C1544

DTC Code DTC Name
C1544 High Engine Revolution Signal

DESCRIPTION

The power steering ECU receives engine speed signals from the ECM via CAN communication. The power steering ECU provides appropriate assisting force in accordance with the engine speed signal.

DTC Code DTC Detection Condition Trouble Area
C1544 An abnormal engine speed signal is received.

  • Engine control system

  • CAN communication system

  • Power steering ECU assembly

PROCEDURE


  1. CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check if DTC U0100 is output Click here.

      Result
      Result Proceed to
      DTC U0100 is not output. A
      DTC U0100 is output. B

      Tech Tips

      DTC U0100 indicates a CAN communication malfunction in the power steering system.


    B

    REPAIR CIRCUIT INDICATED BY OUTPUTCODE Click here

    A

  2. CHECK ENGINE TYPE


    1. Check the engine type.

      Result
      Result Proceed to
      1KD-FTV A
      2TR-FE B
      1GR-FE C
      1GD-FTV D

    B

    CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM) Click here

    C

    CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM) Click here

    D

    CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM) Click here

    A

  3. CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Using the GTS, check for DTCs and confirm that there are no problems in the engine control system Click here.

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output. B

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    GO TO ECD SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  4. CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Using the GTS, check for DTCs and confirm that there are no problems in the engine control system Click here.

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output. B

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  5. CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Using the GTS, check for DTCs and confirm that there are no problems in the engine control system Click here.

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output. B

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  6. CHECK OTHER DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Using the GTS, check for DTCs and confirm that there are no problems in the engine control system (See page for 1GD-FTV, Click here for 1GD-FTV (w/ Urea SCR System)).

      Result
      Result Proceed to
      DTC is not output. A
      DTC is output. (for 1GD-FTV) B
      DTC is output. (for 1GD-FTV (w/ Urea SCR System)) C

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    GO TO ECD SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    C

    GO TO ECD SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here