Lexus ES manuals

Lexus ES: System Diagram

SYSTEM DIAGRAM

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 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS NEXT 3. CONNEC

 Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM use

 Basic Inspection

CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by

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 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) The hybrid vehicle control ECU has a self-diagnosis system. If the computer, hybrid control system, or a component is not working properly, the ECU records the conditions that relate to the fault. The ECU also illuminates the master warning light in the combination m

 Vehicle Control History

VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (FRONT CAMERA SYSTEM) (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn th

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