AUDIO AND VISUAL SYSTEM Noise Occurs

INSPECTION PROCEDURE

PROCEDURE

1. CHECK SPEAKER INSTALLATION

   
   

   1. Check that each speaker is securely installed.

      OK
      Speakers are installed securely.

      Tech Tips

      The radio has a noise prevention function to reduce noise when listening to the radio. If severe noise occurs, check if the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.

      Condition in Which Noise Occurs	Noise Type
      Increases when accelerator pedal is depressed, and stops immediately when engine is stopped	Generator noise
      When A/C or heater is operating	Blower motor noise
      When vehicle is rapidly accelerated on unpaved road When ignition switch is ON	Fuel pump noise
      When horn switch is pressed and released When horn switch is pressed and held down	Horn noise
      Occurs faintly when engine is running, and stops immediately when engine is stopped	Ignition noise
      When turn signal is operating	Flasher noise
      When window washer is operating	Washer noise
      When engine is running, and continues even when engine is stopped	Engine coolant temperature sensor noise
      When wipers are operating	Wiper noise
      When brake pedal is depressed	Stop light switch noise
      Other than above	Static electricity on vehicle

      Tech Tips

      
      

      • Use the table above to identify 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 that receives no signal may make recognition of the noise problem easier.

   
   

   NG

   INSTALL SPEAKER PROPERLY

   OK

   IDENTIFY NOISE SOURCE