DTC B2420: HL AutoLeveling ECU Failure [09/2014 - ]: Procedure

CHECK FOR DTC
1. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2014 - ] .
2. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2014 - ] .
  OK
  
  DTC B2420 is not output.
NG → See step 2

OK → See step 3
REPLACE HEADLIGHT LEVELING ECU ASSEMBLY. Refer to REMOVAL [09/2014 - ]
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ]