AUDIO AND VISUAL SYSTEM > Noise Occurs

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INSPECTION PROCEDURE

1.CHECK SPEAKER

  1. Check the speaker unit installation condition and check that there are no cracks, scratches, deformation, or other failures.

    1. If the speaker is installed incorrectly, proceed to A.

    2. If foreign objects are in the speaker, proceed to B.

    3. If the speaker cone paper is broken, proceed to C.



A
REINSTALL SPEAKER PROPERLY

B
REMOVE FOREIGN OBJECT

C
REPLACE SPEAKER
OK


2.CHECK NOISE CONDITIONS

  1. 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.


    Noise Conditions
    		Noise Source
    Depressing accelerator pedal increases noise, and stopping engine stops noise immediately
    		Generator
    When A/C or heater is operating
    		Blower motor
    When rapidly accelerating on unpaved road, or when engine switch is on (IG)
    		Fuel pump
    When horn switch is pressed and released, or when horn switch is pressed and held down
    		Horn
    Running the engine causes soft noise, and stopping engine stops noise immediately
    		Engine switch on (IG)
    Noise occurs synchronously with turn signal flash
    		Flasher
    When window washer is operating
    		Washer
    Running the engine causes noise, but stopping engine does not stop noise
    		Water temperature sensor
    When wiper is operating
    		Wiper
    When brake pedal is depressed
    		Stop light switch
    Other
    		Static electricity

HINT:
  1. In the chart's left column, find the situation that matches the customer complaint. Then, in the right column, find the part that is causing the noise. Check the noise filter on the part.
  2. To save time and avoid a misdiagnosis, first make sure that the noise is not originating from outside the vehicle.
  3. Troubleshoot noise problems in order of loudness, starting with the loudest noise.
  4. Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.



NG
INSTALL IT PROPERLY
OK

IDENTIFY NOISE SOURCE