Lexus ES: System Diagram
SYSTEM DIAGRAM

Communication Table
| Sender | Receiver | Signal | Line |
| Certification ECU (Smart Key ECU Assembly) | Main Body ECU (Multiplex Network Body ECU) | Luggage compartment door lock assembly open operation signal | CAN |
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CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the luggage compartment door opener system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
OPERATION CHECK BASIC FUNCTION INSPECTION (a) When the trunk and fuel switch assembly (luggage compartment door opening switch) is pressed, check that the luggage compartment door unlatches. (b) While
CUSTOMIZE PARAMETERS CUSTOMIZE LUGGAGE COMPARTMENT DOOR OPENER SYSTEM NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to ma
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DESCRIPTION Detection Item Symptom Trouble Area Door Mirror ECU LH Communication Stop Mode Any of the following conditions are met:
Communication stop for "Front Door LH/L-Mirror (FL-Door/L-Mirror)" is indicated on the "Communication Bus Check" screen of the Techstream.
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FREEZE FRAME DATA FREEZE FRAME DATA HINT: The hybrid vehicle control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. It can be used for estimating or duplicating the vehicle conditions that were present when the malfunction occurred. (a) Connect
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