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
SEE MORE:
DESCRIPTION If the manual up and down functions operate normally but the auto up and down functions do not, the power window control system may be in fail-safe mode. If power window initialization has not been performed, the auto up and down functions will not operate. Click here WIRING DIAGRAM C
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical > Front Radar Sensor > Trouble Codes (e) Check for DTCs (Test Failed / Pending / Confirmed). Techstream Display
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