Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
When the clearance warning ECU assembly determines that the CAN communication circuit is malfunctioning during self diagnosis, DTC U1000 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | CAN communication circuit malfunction is detected | Clearance warning ECU assembly |
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here .gif)
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(b) Clear the DTCs according to the screen on the Techstream.
Click here
(c) Recheck for DTCs.
Click here
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.
Click here
| OK |  | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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