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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SYSTEM DESCRIPTION LUGGAGE COMPARTMENT DOOR OPENER SYSTEM DESCRIPTION (a) If the trunk and fuel switch assembly (luggage compartment door opening switch) is pressed and the luggage compartment door is
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
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DESCRIPTION Detection Item Symptom Trouble Area Skid Control ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of the Techstream.
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Communication
INSPECTION PROCEDURE 1. INSPECT LEVEL WARNING SWITCH ASSEMBLY HINT: This check should be performed with the level warning switch assembly installed to the washer jar. (a) Fill the washer jar with washer fluid. *a Component without harness connected (Level Warning Switch Assembly)
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