Lexus Worldzz: 2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) U CODE Page 176

Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With

Troubleshooting

Up to 08/2009

PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: U0073,U0100,U0126,U0129,U0140: Control Module

Communication Bus Off

U0140 - Lost Communication with Main Body ECU

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.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT

(a) Clear the DTCs See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes/Parking Assist Monitor System.

(b) Check for DTCs See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes/Parking Assist Monitor System.

Result:

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 See: Accessories and Optional Equipment/Antitheft

and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/Electronic Circuit Inspection

Procedure.

B -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/Electronic Circuit Inspection Procedure

A -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information