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 ECU sub-assembly occurs.

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

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

CAUTION / NOTICE / HINT

Note

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

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here

      for Single Beam Headlight:


      Body Electrical > HL AutoLeveling > Clear DTCs

      for Triple Beam Headlight:


      Body Electrical > AFS > Clear DTCs

    2. Turn the engine switch on (IG).

    3. Check for DTCs.

      Click here

      for Single Beam Headlight:


      Body Electrical > HL AutoLeveling > Trouble Codes

      for Triple Beam Headlight:


      Body Electrical > AFS > 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 HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    C

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here