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.

      Click here

      Body Electrical > HL AutoLeveling > Clear DTCs

    2. Check for DTCs.

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      Body Electrical > HL AutoLeveling > Trouble Codes

      OK

      DTC B2420 is not output.

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

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    NG

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY

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