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POWER STEERING SYSTEM, Diagnostic DTC:C1541

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DTC Code DTC Name
C1541 Vehicle Speed Signal
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DESCRIPTION

The power steering ECU assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The ECU provides appropriate assist force in accordance with the vehicle speed based on the signals.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
C1541 Vehicle Speed Signal Vehicle speed signals via CAN communication are cut off for 3 seconds or more.

  • Brake control system

  • CAN communication system

  • Power steering ECU assembly

 EPS warning light: Comes on -
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CAUTION / NOTICE / HINT

Note:

If the power steering ECU assembly has been replaced, perform assist map writing, rotation angle sensor initialization and torque sensor zero point calibration.

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PROCEDURE


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    CHECK CAN COMMUNICATION SYSTEM


    1. Check if DTC U0129 is output.

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      Result
      Result Proceed to
      DTC U0129 is not output. A
      DTC U0129 is output. B

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    CHECK BRAKE CONTROL SYSTEM


    1. Using the GTS, check for DTCs and confirm that there are no malfunctions in the brake control system.

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      1. Chassis > ABS/VSC/TRAC > Trouble Codes


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

    • A

      REPLACE POWER STEERING ECU ASSEMBLY for LHD:Click here

      REPLACE POWER STEERING ECU ASSEMBLY for RHD:Click here

    • B

      GO TO BRAKE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)Click here