Audio System Symptom Troubleshooting - Audio system sound is weak or distorted (display is normal)
Audio system sound is weak or distorted (display is normal)
NOTE:
Check the connectors for poor connections or loose terminals.
1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Turn on the audio system, and check for sound in each mode (AM/FM, and CD).

Is there sound from the speakers, and is the sound quality normal in each mode?

     
YES
     
     
     
Intermittent failure. The system is OK at this time. Check for loose connections at the audio-navigation unit or audio unit and each speaker.?
     
NO: Sound is weak or distorted in all mode
     
     
     
     
NO: Sound is weak or distorted in AM/FM mode
     
     
     
     
NO: Sound is weak or distorted in CD mode