DTC    B2420    HL AutoLeveling ECU Failure

for Preparation Click here


DESCRIPTION

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

DTC No.
DTC Detection Condition
Trouble Area
B2420
Malfunction of headlight leveling ECU assembly
Headlight leveling ECU assembly

INSPECTION PROCEDURE

NOTICE:
If the headlight leveling ECU assembly has been replaced, initialization of the headlight leveling ECU assembly is necessary (Click here).
1.CHECK FOR DTC

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC B2420 is not output.


NG
REPLACE HEADLIGHT LEVELING ECU ASSEMBLY (Click here)
OK

USE SIMULATION METHOD TO CHECK (Click here)