Toyota Yaris: Lin Communication System / System Description

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Power Source & Network / Networking / Lin Communication System / 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)

Front Power Window Regulator Motor Assembly (Driver Door)

-

-

Front Power Window Regulator Motor Assembly (Front Passenger Door)

-

-

Multiplex Network Master Switch Assembly

-

-

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)

-

-

    System Diagram

    S..

    How To Proceed With Troubleshooting

    CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the LIN communication system. *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2...

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Humidity/Rain Sensor Missing Message (B127987)


    DESCRIPTION The main body ECU (multiplex network body ECU) and rain sensor communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DTC if communication becomes abnormal. DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from B127987 Humidity/Rain Sensor Missing Message Auxiliary battery voltage is 9...

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: How To Proceed With Troubleshooting


    CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the window defogger system. *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT: In troubleshooting, confirm that the problem symptoms have been accurately identified...

    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

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