POWER STEERING SYSTEM(w/ Variable Flow Control Solenoid Valve), 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.

  • SFI system

  • 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 (SFI SYSTEM, ECD SYSTEM)


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


      • for 3UR-FE:

        Refer to the following procedures Click here.

      • for 1VD-FTV (w/ DPF):

        Refer to the following procedures Click here.

      • for 1VD-FTV (w/o DPF):

        Refer to the following procedures Click here.

      Result
      Result Proceed to
      DTC is not output. for LHD A
      for RHD B
      DTC is output. for 3UR-FE C
      for 1VD-FTV (w/ DPF) D
      for 1VD-FTV (w/o DPF) E

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    C

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

    D

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

    E

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