DTC U1000: CAN Communication Failure (Message Registry) [11/2018 - ]: Procedure

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

   HINT: 

   After turning the power 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 

   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 [11/2018 - ]

   Result

   Result	Proceed to
   DTC U1000 is not output	A
   DTC U1000 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

B 

REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [11/2018 - ]