LIGHTING SYSTEM, Diagnostic DTC:B2420

DTC Code DTC Name
B2420 AFS ECU Malfunction

DESCRIPTION

When the headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2, detects a malfunction in itself, this DTC is stored.


DTC Code DTC Detection Condition Trouble Area
B2420

  • w/ AFS

    A malfunction in the headlight swivel ECU assembly.

  • w/o AFS

    A malfunction in the headlight leveling ECU assembly.

  • Headlight swivel ECU assembly (w/ AFS)

  • Headlight leveling ECU assembly (w/o AFS)

CAUTION / NOTICE / HINT

Tech Tips

After replacing the headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2 initialization of the ECU is necessary Click here.


  • *1: w/ AFS

  • *2: w/o AFS

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2420 output does not occur.
      Result
      Result Proceed to
      OK A
      NG (w/ AFS) B
      NG (w/o AFS, for LHD) C
      NG (w/o AFS, for RHD) D

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    C

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    D

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here