Lexus RX (RX 350L, RX450h) 2016-2022 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

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

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

(c) Recheck for DTCs.

Click here

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.

    Click here

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY

    Lost Communication with Blind Spot Monitor Slave Module (U0232,U0233)
    DESCRIPTION This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH. DTC No. Detection Item DTC Detection Con ...

    Intuitive Parking Assist System (w/ Intelligent Clearance Sonar System)
    ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Intelligent Clearance Sonar System: Diagnosis System
    DIAGNOSIS SYSTEM DESCRIPTION (a) Intelligent clearance sonar system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair them. (b) When the int ...

    Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Can Communication System: Open in Bus 2 Main Bus Line
    DESCRIPTION There may be an open circuit in one of the bus 2 main lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the network gateway ECU is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 18 (CA4H) and 17 (CA4L) of network gateway ECU is 70 Ω or h ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2022 Copyright www.lexusrx.net
    0.0168