AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM(for Sedan), Diagnostic DTC:B2420

DTC Code DTC Name
B2420 HL AutoLeveling ECU Failure

DESCRIPTION

If the headlight leveling ECU assembly detects an internal malfunction, it stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2420 HL AutoLeveling ECU Failure Malfunction of headlight leveling ECU assembly Headlight leveling ECU assembly

CAUTION / NOTICE / HINT

Note

Make sure to perform vehicle information synchronization and initialization after replacing the headlight leveling ECU assembly.

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PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

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      Body Electrical > HL AutoLeveling > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTC B2420 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here