Audio System Sound is Weak or Distorted (Display is Normal)

Audio system sound is weak or distorted (display is normal)

NOTE: Check the vehicle battery condition first.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit 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 unit and at each speaker.

NO - Check for the following based upon the results listed:

- AM/FM only
- Poor radio reception or interference
- Seek stop test
- Electrical noise test

- CD play only
- Sound judging
- Audio disc skips
- Frequency sweep

- All modes
- Sound judging
- Frequency sweep
- Phase test
- Electrical noise test

- Individual speaker or speaker channel only
- Self-diagnostic function
- Individual speaker test
- Sound balance test
- Phase test

NOTE: If any performance conditions are determined by the above tests, and further isolation of the problem speaker or speaker circuit are necessary, go to no sound is heard from speaker(s) (display is normal) troubleshooting.