AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2420

DTC Code DTC Name
B2420 HL AutoLeveling ECU Failure

DESCRIPTION

When the headlight leveling ECU detects a malfunction in itself, this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2420

HL AutoLeveling ECU Failure

A malfunction in the headlight leveling ECU.

Headlight leveling ECU assembly

CAUTION / NOTICE / HINT

Tip:

After replacing the headlight leveling ECU, initialization of the ECU is necessary.

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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.

      Click here

      Body Electrical > HL AutoLeveling > Trouble Codes

    Result

    Proceed to

    DTC B2420 output does not occur

    DTC B2420 output occurs
    DTC B2420 output does not occur

    USE SIMULATION METHOD TO CHECK

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    DTC B2420 output occurs

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY

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