Toyota CH-R Service Manual: Noise Occurs

Toyota CH-R Service Manual / Audio / Video / Audio And Visual System(for Radio Receiver Type) / Noise Occurs

PROCEDURE

1.

NOISE CONDITION

(a) Check from which direction the noise comes (front left or right, rear left or right).

OK:

The location of the noise source can be determined.

NG

GO TO STEP 3

OK

2.

CHECK SPEAKERS

(a) Check the installation conditions of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation or other malfunctions.

Result

Proceed to

No malfunction is found.

A

The speaker is installed incorrectly.

B

Foreign matter is in a speaker.

C

The speaker cone paper is broken.

D
B

REINSTALL SPEAKER
C

REMOVE FOREIGN MATTER
D

REPLACE SPEAKER
A

3.

CHECK NOISE CONDITION

(a) Check the noise condition.

HINT:

The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.

Condition under which Noise Occurs

Noise Source

Noise increases when the accelerator pedal is depressed, but stops when the engine is stopped.

Generator

Noise occurs during A/C or heater operation.

Blower motor

Noise occurs when the horn switch is pressed and released or when pressed and held.

Horn

Noise occurs synchronously with the blink of the turn signal.

Flasher

Noise occurs during window washer operation.

Washer

Noise occurs during wiper operation.

Wiper

Noise occurs when the brake pedal is depressed.

Stop light switch

Others

Static electricity

HINT:

  • In the left column of the table, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the respective noise filter.
  • To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
  • Troubleshoot noises in descending order of loudness.
  • Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.

Condition

Proceed to

The noise source cannot be determined

A

The noise source can be determined

B
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

B

REPAIR OR REPLACE NOISE SOURCE
    Terminals Of Ecu
    TERMINALS OF ECU Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition F47-4 (MACC) - F48-7 ( ...

    No Sound can be Heard from Speakers
    PROCEDURE 1. CHECK SETTINGS (a) Check radio receiver assembly setting. (1) Check that the volume is not set to "0". OK: The volume is not set to "0 ...

    Other materials:

    Toyota CH-R Service Manual > Power Window Control System: Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*1 Click here *1: w/ Smart Key System HINT: Use the table below to help determine the cause of problem symptoms. ...

    Toyota CH-R Service Manual > Continuously Variable Transaxle System: Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC) (P099B,P099C)
    DESCRIPTION Based on the signal received by the shift solenoid valve SC, the ECM uses the shift solenoid valve SLU to control the forward and reverse clutch pressure. If there is an open or short in the shift solenoid valve SC circuit, the ECM stops sending current to the defective shift solen ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0079