LIGHTING SYSTEM, Diagnostic DTC:B242B

DTC Code DTC Name
B242B Vehicle Control Information Malfunction

DESCRIPTION

This DTC is output when the inner rear view mirror assembly (adaptive high beam sensor) receives abnormal control information via CAN communication.

DTC Code DTC Detection Condition Trouble Area
B242B Malfunction in vehicle information

  • CAN communication system

  • Inner rear view mirror assembly (adaptive high beam sensor)

  • AFS ECU

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 symptom.

  • After replacing the inner rear view mirror assembly (adaptive high beam sensor), it is necessary to initialize the inner rear view mirror assembly (adaptive high beam sensor) beam axis Click here.

PROCEDURE


  1. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Enter the following menus: System Select / Health Check.

    4. Clear the DTC.


    NEXT

  2. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Enter the following menus: System Select / Health Check.

    4. Check for DTC.

      Result
      Result Proceed to
      DTC is not output A
      DTC B242B is output B
      CAN communication system DTC is output (for LHD) C
      CAN communication system DTC is output (for RHD) D

    B

    CHECK INNER REAR VIEW MIRROR ASSEMBLY (ADAPTIVE HIGH BEAM SENSOR) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  3. CHECK INNER REAR VIEW MIRROR ASSEMBLY (ADAPTIVE HIGH BEAM SENSOR)


    1. Temporarily replace the inner rear view mirror (adaptive high beam sensor) with a new or normally functioning one Click here.

    2. Perform beam axis initialization for the inner rear view mirror assembly (adaptive high beam system sensor) Click here.

      OK
      DTC B242B output does not occur

    NG

    REPLACE AFS ECU Click here

    OK

    END (INNER REAR VIEW MIRROR [ADAPTIVE HIGH BEAM SENSOR] WAS DEFECTIVE)