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

Tech Tips

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

Click here

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 Click here

    DTC B2420 output occurs

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here