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)*1

-

-

Sliding Roof ECU (Sliding Roof Drive Gear Assembly)*2

-

-

Kick Door Control Sensor*3

-

-

  • *1: w/ Sliding Roof System
  • *2: w/ Panoramic Moon Roof System
  • *3: 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)

-

-

READ NEXT:

 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 BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cab

SEE MORE:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Main Body or Smart Access / Trouble Codes. Body Electrical > Main Body > Trouble Codes Body Electrical > Smart

 Power Trunk Lid does not Operate Using Outside Switch

DESCRIPTION The door control switch signal is sent to the luggage closer motor assembly. If the power trunk lid does not operate using the door control switch, a door control switch circuit malfunction is a possible cause. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: If the luggage closer motor a

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