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)

-

-

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 AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following s

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 Drive Motor Inverter Temperature Sensor "A" Circuit Voltage Out of Range (P0AED1C)

DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate that the motor inverter temperature sensor value is abnormal. The cause of this malfunction may be one of the following: Internal inverter malfunction Inverter with converter assembly internal circuit malfunction Hybrid cooling system ma

 Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) operates its built-in motor according to the sliding roof switch (map light sub-assembly) operation. Using the sliding roof switch (map light sub-assembly), if the sliding roof can be operated normally when 45 seconds or more ha

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