Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Control Module Communication Bus "A" Off (U0073,U0155)

DESCRIPTION

These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication line.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0073

Control Module Communication Bus "A" Off

Control module communication bus off

CAN communication system

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

Lost communication with the combination meter assembly

CAN communication system

HINT:

When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTCs

Click here

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

(b) Check for CAN communication system DTCs

Click here

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

Result

Proceed to

CAN communication system DTCs are output

A

No CAN communication system DTCs are output

B

A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

    Rear Sensor Communication Malfunction (C1AED)
    DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. DTC No. Dete ...

    CAN Communication Failure (Message Registry) (U1000)
    DESCRIPTION If DTC U1000 is stored frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs. DTC ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Basic operation of the Remote Touch screen: Remote Touch
    The Remote Touch can be used to operate the Remote Touch screens. For details, refer to the "NAVIGATION SYSTEM OWNER'S MANUAL". Vehicles with 8-inch display Vehicles with 12.3-inch display "HOME" button Press this button to display the home screen. * button Press this button t ...

    Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Occupant Classification System: Trouble in Passenger Airbag ON/OFF Indicator
    DESCRIPTION The occupant classification system detects the front passenger seat condition. It then displays the instrument panel passenger airbag assembly and front seat cushion airbag assembly RH condition (activated/not activated) using the passenger airbag ON/OFF indicator. HINT: Approximately 6 ...

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

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

    © 2024 Copyright www.lexusrx.net
    0.0161