Toyota Yaris: Horn / Horn System

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Vehicle Exterior / Horn / Horn System

Parts Location

PARTS LOCATION

ILLUSTRATION

*1

LOW PITCHED HORN ASSEMBLY

*2

NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY

- HORN RELAY

- HORN FUSE

ILLUSTRATION

*1

HORN BUTTON ASSEMBLY

*2

SPIRAL CABLE SUB-ASSEMBLY

*3

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

*4

POWER DISTRIBUTION BOX ASSEMBLY

*5

DLC3

-

-

System Diagram

SYSTEM DIAGRAM

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.

Click here

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Horn System

Symptom

Suspected Area

Link

Horn does not sound

HORN fuse

-

HORN relay

Horn button assembly

-

Spiral cable sub-assembly

Power distribution box assembly

Harness or connector

-

Horn sounds all the time

HORN relay

Horn button assembly

-

Spiral cable sub-assembly

Power distribution box assembly

Main body ECU (Multiplex network body ECU)

Harness or connector

-

Data List / Active Test

DATA LIST / ACTIVE TEST

ACTIVE TEST

HINT:

Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Vehicle Horn

Vehicle horn

OFF or ON

-

    Horn

    ComponentsCOMPONENTS ILLUSTRATION *1 LOW PITCHED HORN ASSEMBLY *2 RADIATOR UPPER AIR GUIDE PLATE N*m (kgf*cm, ft.*lbf): Specified torque - - RemovalREMOVAL PROCEDURE 1...

    Relay

    On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT HORN RELAY ASSEMBLY (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Meter Illumination does not Dim at Night


    DESCRIPTION In this circuit, the combination meter assembly receives auto dimmer signals from the main body ECU (multiplex network body ECU) via CAN communication. When the combination meter assembly receives an auto dimmer signal, it dims the meter illumination (warning and indicator lights)...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message (U023587)


    DESCRIPTION The forward recognition camera and millimeter wave radar sensor assembly communicate via CAN communication. If there is an error in the communication with the millimeter wave radar sensor assembly, the forward recognition camera stores DTC U023587...

    Categories

    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

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