LIGHTING SYSTEM, Diagnostic DTC:B242C, B242D

DTC Code DTC Name
B242C Right Headlight ECU Malfunction
B242D Left Headlight ECU Malfunction

DESCRIPTION

These DTCs are output when an internal malfunction in the headlight light control ECU sub-assembly occurs.

The headlight light control ECU sub-assembly LH outputs DTC B242C and B242D.

DTC No. Detection Item DTC Detection Condition Trouble Area
B242C Right Headlight ECU Malfunction Headlight light control ECU sub-assembly RH malfunction Headlight light control ECU sub-assembly RH
B242D Left Headlight ECU Malfunction Headlight light control ECU sub-assembly LH malfunction Headlight light control ECU sub-assembly LH

CAUTION / NOTICE / HINT

Note

After the headlight light control ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the power switch on (IG).

    2. Turn on the headlights using the headlight dimmer switch.

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Result Proceed to
      DTCs B242C and B242D are not output A
      DTC B242C is output B
      DTC B242D is output C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE HEADLAMP LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here

    C

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here