Dtc B2420 Afs Ecu Malfunction

Vehicle Exterior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Lighting (Ext). Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

DTC B2420 AFS ECU Malfunction

DTC B2420 HL AutoLeveling ECU Failure


DESCRIPTION

When the headlight leveling ECU*1 or headlight swivel ECU*2 detects a malfunction in itself, this DTC is stored.
  1. *1: w/ Static Headlight Auto Leveling
  2. *2: w/ Dynamic Headlight Auto Leveling

DTC Code
DTC Detection Condition
Trouble Area
B2420
  1. A malfunction in the headlight leveling ECU. (w/ Static Headlight Auto Leveling)
  2. A malfunction in the headlight swivel ECU. (w/ Dynamic Headlight Auto Leveling)
  1. Headlight leveling ECU assembly (w/ Static Headlight Auto Leveling)
  2. Headlight swivel ECU assembly (w/ Dynamic Headlight Auto Leveling)

INSPECTION PROCEDURE

NOTICE:
After replacing the headlight leveling ECU*1 or headlight swivel ECU*2, initialization of the ECU is necessary (except w/ Dynamic Headlight Auto Leveling) (Click here).
  1. *1: w/ Static Headlight Auto Leveling
  2. *2: w/ Dynamic Headlight Auto Leveling
1.CHECK FOR DTC

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC B2420 output does not occur.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (w/ Static Headlight Auto Leveling)
    		B
    NG (w/ Dynamic Headlight Auto Leveling) (for LHD)
    		C
    NG (w/ Dynamic Headlight Auto Leveling) (for RHD)
    		D


B
REPLACE HEADLIGHT LEVELING ECU ASSEMBLY (Click here)

C
REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY (Click here)

D
REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)