Audio System Sound Is Weak Or Distorted (Display Is Normal)

NOTE:

Check the vehicle battery condition first.
Check the connectors for poor connection or loose terminals.
Set the fader and balance positions to the center.

Turn the ignition switch to ON (II).
Turn on the audio unit and check for sound in each mode (AM, FM, XM, USB, 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, the amplifier, and each speaker. ■

NO - Speakers all work normally, but the sound quality is poor:
- If the sound quality is poor only with AM or FM, go to POOR AM OR FM RADIO RECEPTION OR INTERFERENCE .
- If the sound quality is poor only with XM radio, go to POOR OR NO SOUND WITH XM RADIO (AUDIO UNIT DOES DISPLAY XM CHANNELS) .
- If the sound quality is poor only with USB, go to USB INPUT SOUND IS LOW OR CANNOT BE HEARD (WITH NAVIGATION) .