AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Noise Occurs

PROCEDURE

1. NOISE CONDITION

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

      OK

      The location of the noise source can be determined.

   CHECK NOISE CONDITIONSClick here

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 problems.

      Table 1. Result

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

   REINSTALL SPEAKER

   REMOVE FOREIGN OBJECT

   REPLACE SPEAKER

3. CHECK NOISE CONDITIONS

   1. Check the noise condition.

      Tip:

      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 vehicle accelerates rapidly on an unpaved road or after the ignition switch is turned to ON.	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.	Engine coolant temperature sensor
      Noise occurs during wiper operation.	Wiper
      Noise occurs when the brake pedal is depressed.	Stop light switch
      Other	Static electricity

      Tip:

      • 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.

      • 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 cannot be determined.

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

   (Click here)

   REPAIR OR REPLACE NOISE SOURCE