Toyota Avalon Service & Repair Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

for Gasoline Model: Click here

for HV Model: 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

Instrument panel junction block assembly

Harness or connector

-

Horn sounds all the time

HORN relay

Horn button assembly

Spiral cable sub-assembly

Instrument panel junction block assembly

Main body ECU (Multiplex network body ECU)

Harness or connector

-

Low pitched horn operates but high pitched horn does not operate

High pitched horn assembly

Harness or connector

-

High pitched horn operates but low pitched horn does not operate

Low pitched horn assembly

Harness or connector

-

    Precaution

    System Diagram

    See More:

    Toyota Avalon Service & Repair Manual > Power Steering System(for Gasoline Model): Assist Map Number Un-Writing (C1581)
    DESCRIPTION This DTC will be stored if the power steering ECU (rack and pinion power steering gear assembly) determines that the assist map is not written in the ECU. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C1581 Assist Map Number ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2024 Copyright www.tavalon.net
    0.0113