AUDIO AND VISUAL SYSTEM Noise Occurs

INSPECTION PROCEDURE

PROCEDURE


  1. NOISE CONDITION


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


      1. Check in which direction the noise comes from.

        OK
        The location of the noise source can be determined.

    NG

    CHECK NOISE CONDITIONS Click here

    OK

  2. CHECK SPEAKERS


    1. 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
      Condition Proceed to
      A speaker is installed incorrectly A
      Foreign objects are in the speaker B
      A speaker cone paper is broken C
      No malfunction is found D

    A

    REINSTALL SPEAKER

    B

    REMOVE FOREIGN OBJECT

    C

    REPLACE SPEAKER

    D

  3. CHECK NOISE CONDITIONS


    1. Check the noise condition.

      Tech Tips

      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.

      Conditions 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 vehicle accelerates rapidly on an unpaved road or after the engine switch is turned on (IG). Fuel pump
      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 while the engine is running, and continues even after the engine is stopped. Water temperature sensor
      Noise occurs during wiper operation. Wiper
      Noise occurs when the brake pedal is depressed. Stop light switch
      Others Static electricity

      Tech Tips


      • In the left column, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the noise filter on or for the part.

      • To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.

      • Noise should be removed in descending order of loudness.

      • Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.

      OK
      The noise source can be determined.

    NG

    REPAIR OR REPLACE NOISE SOURCE

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here