Click here

LIGHTING SYSTEM, Diagnostic DTC:B2420

Click here
Click here Click here
DTC Code DTC Name
B2420 HL AutoLeveling ECU Failure
Click here

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B2420 A malfunction in the headlight leveling ECU. Headlight leveling ECU assembly
Click here

INSPECTION PROCEDURE

Tip:

After replacing the headlight leveling ECU, initialization of the ECU is necessary (Click here).

Click here

PROCEDURE


  1. Click here

    CHECK FOR DTC


    1. Clear the DTCs (Click here).

    2. Check for DTCs (Click here).

      Table 1. Result
      Result Proceed to
      DTC B2420 is not output A
      DTC B2420 is output (for LHD) B
      DTC B2420 is output (for RHD) C

  2. Click here

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLYClick here

  3. Click here

    USE SIMULATION METHOD TO CHECKClick here

  4. Click here

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLYClick here