EASY AND SMOOTH START SYSTEM, Diagnostic DTC:C1491/35, U0418/38

DTC Code DTC Name
C1491/35 ABS ECU
U0418/38 Lost Communication with ABS ECU (Check Sum)

DESCRIPTION

DTC No. Detection Condition Trouble Area
C1491/35

  • 2 seconds have elapsed after ES start operation began, but the ES start operation status in the skid control ECU (brake actuator assembly) does not become "operating".

  • 2 seconds have elapsed after ES start operation released, but the ES start operation status in the skid control ECU (brake actuator assembly) does not become "released".

  • The ABS warning light illuminates for 2 seconds or more during ES start operation, or abnormal information is sent from the skid control ECU (brake actuator assembly) for 2 seconds or more.

  • CAN communication line

  • Skid control ECU (brake actuator assembly)
U0418/38 Malfunction in communication data from the skid control ECU (brake actuator assembly) continues for 2 seconds or more.

  • CAN communication line

  • Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

A01CI7YE01

INSPECTION PROCEDURE

Note


  • After replacing the electric vehicle control ECU assembly, perform clutch pedal stroke sensor assembly release position calibration Click here.

  • DTCs stored in the electric vehicle control ECU assembly are not cleared even after the system returns to a normal condition, so clear the DTCs after performing troubleshooting Click here.

PROCEDURE


  1. CHECK ANTI-LOCK BRAKE SYSTEM


    1. Check if an anti-lock brake system DTC is output Click here

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

    B

    GO TO ANTI-LOCK BRAKE SYSTEM Click here

    A

    USE SIMULATION METHOD TO CHECK Click here