LIGHTING SYSTEM, Diagnostic DTC:B241D

DTC Code DTC Name
B241D DRS System

DESCRIPTION

The headlight swivel ECU receives signals indicating the rear steering angle from the rear steering control ECU using CAN communication.

DTC Code DTC Detection Condition Trouble Area
B241D A malfunction in the rear steering control ECU.

  • Rear steering control ECU

  • Headlight swivel ECU assembly

WIRING DIAGRAM

A01FQ9UE06

INSPECTION PROCEDURE

Note


  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this DTC.

  • After replacing the headlight swivel ECU, perform initialization and registration of vehicle information Click here.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B241D output does not occur.

    NG

    CHECK REAR STEERING CONTROL ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. CHECK REAR STEERING CONTROL ECU


    1. Temporarily replace the rear steering control ECU with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B241D output does not occur.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    C

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    A

    END (REAR STEERING CONTROL ECU WAS DEFECTIVE)