POWER STEERING SYSTEM(for 1VD-FTV with DPF), 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.

  • ECD 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 OTHER DTC OUTPUT (ECD SYSTEM)


    1. Using the GTS, check for DTCs and confirm that there are no problems in the ECD 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