B2420

LIGHTING: LIGHTING SYSTEM: B2420: AFS ECU Malfunction
B2420 - AFS ECU Malfunction

DESCRIPTION

When the AFS ECU detects a malfunction in itself, a DTC is output.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2420 output does not occur.

NG -- REPLACE AFS ECU Removal

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