POWER STEERING SYSTEM, Diagnostic DTC:C1541

DTC Code DTC Name
C1541 Vehicle Speed Signal

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 Return-to-normal Condition 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 The ECU judges the system has returned to normal or the power switch is turned on (IG) again -

CAUTION / NOTICE / HINT

Note

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

Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if DTC U0129 is output.

      Click here

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

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

  2. CHECK BRAKE CONTROL SYSTEM


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

      Click here


      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 Click here

    B

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