Lexus ES: System Description
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 closed, a luggage compartment door lock assembly open operation signal is sent to the main body ECU (multiplex network body ECU). Then the main body ECU (multiplex network body ECU) unlatches the luggage compartment door.
FUNCTION OF MAIN COMPONENTS
| Item | Outline |
|---|---|
| Luggage door opening cancel switch assembly | Cancels luggage compartment door opener system operation |
| Trunk and fuel switch assembly (Luggage compartment door opening switch) | Turns the luggage compartment door opener system ON/OFF |
| Luggage compartment door lock assembly | Opens the luggage compartment door via a signal from the main body ECU (multiplex network body ECU) |
| Main body ECU (Multiplex network body ECU) | Receives luggage door opening cancel switch assembly on signal and a luggage compartment door lock assembly open operation signal, and controls the luggage compartment door opener system |
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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 ass
How To Proceed With Troubleshooting
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
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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Terminals Of Ecu
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors. (b) Measure the voltage and resistance according to the value(s) in t
Assist Map Number Un-Writing (C1581)
DESCRIPTION This DTC will be stored if the power steering ECU (rack and pinion power steering gear assembly) determines that the assist map is not written in the ECU. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C1581
