DTC U1000: CAN Communication Failure (Message Registry) [11/2020 - 11/2021]: Procedure

1. Clear the DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Body Electrical > HL AutoLeveling (Sub) > Clear DTCs 

   for Stereo Camera Type:

   Body Electrical > AFS > Clear DTCs 

   Body Electrical > AFS (Sub) > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Check for DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Body Electrical > HL AutoLeveling (Sub) > Trouble Codes 

   for Stereo Camera Type:

   Body Electrical > AFS > Trouble Codes 

   Body Electrical > AFS (Sub) > Trouble Codes 

   Result

   Result	Proceed to
   U1000 is not output	A
   Only U1000 for headlight ECU sub-assembly LH is output	B
   Only U1000 for headlight ECU sub-assembly RH is output	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

B 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2020 - 11/2021] 

Result: 

C 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [11/2020 - 11/2021]