Wednesday, February 5, 2020

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 126


assembly stops, the navigation system will not function normally. This is because MOST communication will stop due to the shut



down of the amplifier causing an error in the MOST network. The stereo component amplifier assembly will start operating again



when the engine switch is turned off and back on (ACC) again. However, the amplifier will stop operating again if its output exceeds a



certain level.



* When the stereo component amplifier assembly stops operating and a malfunction occurs in the navigation system due to a



short in a speaker circuit, this DTC will be stored. In this case, check each speaker circuit and repair or replace



malfunctioning parts, and then recheck for DTCs.



B -- CHECK MOST LINE CHECK



A -- GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System) See: Accessories and Optional Equipment/Radio, Stereo,



and Compact Disc/Testing and Inspection/Component Tests and General Diagnostics/Audio and Visual System (w/ Navigation



System)/Speaker Circuit/Up to 08/2009



3. CHECK MOST LINE CHECK



(a) Display the "MOST Line Check" screen See: Accessories and Optional Equipment/Navigation System/Testing and



Inspection/Reading and Clearing Diagnostic Trouble Codes/Navigation System (for DVD).



(1) Check the result on the "MOST Line Check" screen.



Result:



HINT



* When "NCON" is displayed for more than 1 item, proceed to the step for the device that has the smallest node position



number.



* The "MOST Line Check" screen can be displayed only when DTC B15D0 is stored.



Text in Illustration



D -- CHECK HARNESS AND CONNECTOR



C -- CHECK MOST COMMUNICATION CONNECTOR



B -- CHECK MOST COMMUNICATION CONNECTOR



A -- Continue to next step.



4. CHECK MOST COMMUNICATION CONNECTOR



(a) Check the MOST communication line connector.



(1) Check the MOST communication line connectors of the radio receiver assembly and stereo component amplifier assembly See:



Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU



Controlled Systems/Electronic Circuit Inspection Procedure.



(b) Display the "MOST Line Check" screen and check the result See: Accessories and Optional Equipment/Navigation System/Testing



and Inspection/Reading and Clearing Diagnostic Trouble Codes/Navigation System (for DVD).

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