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 > Air Conditioning System(for Automatic Air Conditioning System With Side-mounted Air Conditioner Pressure Sensor): PTC Heater Circuit
    DESCRIPTION The air conditioning amplifier assembly sends operation signals to the PTC heater relays when quick heater assembly operation conditions are met. Based on the signals from the air conditioning amplifier assembly, the PTC heater relays turn on, and power is supplied to the quick he ...

    Toyota CH-R Service Manual > Radio Antenna Cord: Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced the during antenna cord sub-assembly removal/installation are shown below. Necessary Procedures After P ...

    Toyota C-HR (AX20) 2023-2026 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2026 Copyright www.tochr.net
    0.0133