DTC U1000: CAN Communication Failure (Message Registry) [04/2013 - 10/2016]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [04/2013 - 09/2020]

   Body Electrical > HL AutoLeveling > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [04/2013 - 09/2020]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   OK

   DTC U1000 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 06/2014]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2014 - 08/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 10/2016] 

Result: 

NG 

REPLACE HEADLIGHT LEVELING ECU ASSEMBLY. Refer to  REMOVAL [04/2013 - 10/2016]