DTC U1000: CAN Communication Failure (Message Registry) [06/2017 - 10/2020]: Procedure

1. Using the Techstream, check for DTCs according to the prompts on the screen.

   HINT: 

   After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

2. Clear the DTCs according to the screen on the Techstream.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs 

3. Recheck for DTCs.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

   OK

   DTC U1000 is not output.

   HINT: 

   • If DTC U1000 is not output after clearing the DTCs, an intermittent CAN communication circuit malfunction is suspected.
   • If DTC U1000 is output frequently, replace the clearance warning ECU assembly, even though the DTC was not output when rechecking for DTCs.

     Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2017 - 08/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 09/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 03/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2020 - 10/2020]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2017 - 08/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 09/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 03/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2020 - 10/2020] 

Result: 

NG 

REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [06/2017 - 10/2020]