Lexus ES manuals

Lexus ES: System Description

SYSTEM DESCRIPTION

LIN COMMUNICATION SYSTEM DESCRIPTION

The LIN communication system is used for communication between the components in the tables below. If communication cannot be performed through LIN communication such as when there is an open or short in a communication line, the master control ECU of the relevant system will store a DTC. Refer to the table below about the communication bus lines and connected components.

HINT:

  • Each component has a fail-safe function which operates in the event of a malfunction to protect the system and allow communication between other components to continue.
  • In the following table, "○" indicates that the function applies, and "-" indicates that it does not.
Door Bus Lines

Component

Master Control

LIN Communication DTC Output Function

Main Body ECU (Multiplex Network Body ECU)

Power Window Regulator Motor Assembly (Driver Door)

-

-

Power Window Regulator Motor Assembly (Front Passenger Door)

-

-

Power Window Regulator Motor Assembly (Rear LH Door)

-

-

Power Window Regulator Motor Assembly (Rear RH Door)

-

-

Multiplex Network Master Switch Assembly

-

-

Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly)

-

-

Kick Door Control Sensor*

-

-

  • *: w/ Power Trunk Lid System
Certification Bus Lines

Component

Master Control

LIN Communication DTC Output Function

Certification ECU (Smart Key ECU Assembly)

Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)

-

-

ID Code Box (Immobiliser Code ECU)

-

-

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 System Diagram

SYSTEM DIAGRAM DOOR BUS LINES CERTIFICATION BUS LINES

 Parts Location

PARTS LOCATION ILLUSTRATION *A for Manual Tilt and Manual Telescopic Steering Column *B for Power Tilt and Power Telescopic Steering Column *C w/ Power Trunk Lid System - - *1

 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following s

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 HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15BA,B15F9)

DESCRIPTION These DTCs are stored when a malfunction occurs in the radio receiver assembly DTC No. Detection Item DTC Detection Condition Trouble Area B1551 HD Radio Tuner Malfunction When any of the following conditions is met: "HD Radio" tuner decoder malfunction "HD Radio" t

 Installation

INSTALLATION PROCEDURE 1. INSTALL LUGGAGE COMPARTMENT DOOR WEATHERSTRIP (a) Make sure to remove any non-drying sealant from the installation surfaces on the vehicle body. NOTICE: If there is any non-drying sealant remaining on the vehicle body, the luggage compartment door weatherstrip may not be

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