AUDIO AND VISUAL SYSTEM (w/o Microphone) Noise Occurs

INSPECTION PROCEDURE

PROCEDURE

1. CHECK SPEAKER INSTALLTION

   
   

   1. Check the speaker installation condition.

      
      

      1. Check that each speaker is securely installed.

         OK
         The malfunction disappears.

         Tech Tips

         The radio is equipped with a noise prevention system that blocks excessively loud noise. If such noise occurs, check that all wiring is proper and that the antenna installation part ground and noise-prevention equipment are installed.

         Conditions under Which Noise Occurs	Noise Type
         Noise increases when accelerator pedal is depressed, but stops when engine is stopped	Generator noise
         Noise occurs during A/C or heater operation	Blower motor noise
         Noise occurs when vehicle accelerates rapidly on unpaved road or after ignition switch is turned on	Fuel pump noise
         Noise occurs when horn switch is pressed and released or when pressed and held	Horn noise
         Noise occurs while engine is running, but stops when engine is stopped	Ignition noise
         Noise occurs synchronously with blink of turn signal	Flasher noise
         Noise occurs during window washer operation	Washer noise
         Noise occurs while engine is running, and continues even after engine is stopped	Water temperature sensor noise
         Noise occurs during wiper operation	Wiper noise
         Noise occurs when brake pedal is depressed	Stop light switch noise
         Others	Static electricity stored on vehicle

      Tech Tips

      
      

      • Identify the conditions under which the noise occurs, and check the noise filter on the relevant part.

      • First ensure that the noise is not coming from outside. Failure to do so makes noise source detection difficult and may lead to a misdiagnosis.

      • Noise problems should be remedied in descending order of loudness.

   
   

   NG

   INSTALL IT PROPERLY

   OK

   IDENTIFICATION OF NOISE SOURCE