AUDIO AND VISUAL SYSTEM Noise Occurs

INSPECTION PROCEDURE

PROCEDURE

1. CHECK SPEAKER

   
   

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

      
      

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

      2. If foreign objects is 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.

      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 ignition switch is turned on.	Fuel pump
      Noise occurs when the horn switch is pressed and released or when pressed and held.	Horn
      Quiet noise occurs while the engine is running, but stops when the engine is stopped.	Ignition switch ON
      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 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 originating from outside the vehicle.

      • Troubleshoot noise problems in order of loudness, starting with the loudest noise.

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

   
   

   OK

   RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

   NG

   INSTALL IT PROPERLY