Toyota CH-R Service Manual: Noise Occurs

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

PROCEDURE

1.	CHECK NOISE CONDITION

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

OK:

The location of the noise source can be determined.

GO TO STEP 3

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 failures.

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

REINSTALL SPEAKER

REMOVE FOREIGN MATTER

REPLACE SPEAKER

3.	CHECK NOISE CONDITIONS

(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 turn signal blinking pattern.	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.

Result	Proceed to
The noise source cannot be determined	A
The noise source can be determined	B

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE NOISE SOURCE

No Sound can be Heard from Speakers

PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: A ...

Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM for TMMT Made for TMC Made CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initializat ...

Other materials:

Toyota CH-R Service Manual > K114 Cvt: Torque Converter And Drive Plate
Inspection INSPECTION PROCEDURE 1. INSPECT TORQUE CONVERTER ASSEMBLY (a) Inspect the one-way clutch. (1) Press on the spline of the stator with a finger and rotate the spline. Check that the spline rotates smoothly when turned clockwise and rotates with difficulty when tu ...

Toyota CH-R Service Manual > Vehicle Stability Control System: Steering Angle Sensor Output Malfunction (C1434)
DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the steering angle sensor via CAN communication. HINT: If there is a malfunction in the bus lines between the steering angle sensor and the CAN communication system, DTC U0126 (Lost Communication with Steering An ...

Toyota CH-R Service Manual: Noise Occurs

No Sound can be Heard from Speakers

Radio Broadcast cannot be Received or Poor Reception

Other materials:

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

Toyota CH-R Owners Manual

Toyota CH-R Service Manual