Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Control Module Communication Bus Off (U0073,U0100,U0126,U0129,U0140,U0163,U0233,U0265-U0268,U1110)

Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Panoramic View Monitor System / Control Module Communication Bus Off (U0073,U0100,U0126,U0129,U0140,U0163,U0233,U0265-U0268,U1110)

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the parking assist ECU.

HINT:

If CAN communication system DTCs are stored, they may also be stored in other systems.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0073

Control Module Communication Bus Off

Control module communication bus off

CAN communication system

U0100

Lost Communication with ECM / PCM "A"

Lost communication with ECM

CAN communication system

U0126

Lost Communication with Steering Angle Sensor Module

Lost communication with steering sensor

CAN communication system

U0129

Lost Communication with Brake System Control Module

Lost communication with brake actuator assembly (skid control ECU)

CAN communication system

U0140

Lost Communication with Body Control Module

Lost communication with main body ECU (multiplex network body ECU)

CAN communication system

U0163

Lost Communication with Navigation Control Module

Lost communication with radio receiver assembly

CAN communication system

U0233

Lost Communication with Blind Spot Monitor Master Module

Lost communication with blind spot monitor sensor LH

CAN communication system

U0265

Lost Communication with Image Processing Sensor A

Lost communication with rear television camera assembly

CAN communication system

U0266

Lost Communication with Image Processing Sensor B

Lost communication with side television camera assembly LH

CAN communication system

U0267

Lost Communication with Image Processing Sensor C

Lost communication with front television camera assembly

CAN communication system

U0268

Lost Communication with Image Processing Sensor D

Lost communication with side television camera assembly RH

CAN communication system

U1110

Lost Communication with Clearance Sonar Module

Lost communication with clearance warning ECU assembly

CAN communication system

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > Circumference Monitoring Camera Control Module > Clear DTCs

(b) Check for DTCs.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

Result

Proceed to

DTC U0073, U0100, U0126, U0129, U0140, U0163, U0233, U0265, U0266, U0267, U0268 and U1110 are not output

A

DTC U0073, U0100, U0126, U0129, U0140, U0163, U0233, U0265, U0266, U0267, U0268 and/or U1110 are output

B

HINT:

  • If CAN communication system DTCs are stored, they may also be stored in other systems.
  • If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
  • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.

    Click here

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM

    Front Camera Response Malfunction (C2A6D)
    DESCRIPTION During self diagnosis of the parking assist ECU, the parking assist ECU sends display mode ID signals to the front television camera assembly. This DTC is stored when the output of the fro ...

    CAN Communication Failure (Message Registry) (U1000)
    DESCRIPTION If DTC U1000 is stored frequently, duplicate the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs. DTC No. Detection Item DTC ...

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