B2420

LIGHTING (EXT): AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM: B2420: HL Auto Leveling ECU Failure
B2420 - HL Auto Leveling ECU Failure

DESCRIPTION

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





INSPECTION PROCEDURE

NOTICE:
If the headlight leveling ECU assembly has been replaced, initialization of the headlight leveling ECU assembly is necessary Initialization.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTCs DTC Check / Clear.

(b) Check for DTCs DTC Check / Clear.

OK:

DTC B2420 is not output.

NG -- REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting