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Audio System Symptom Troubleshooting Index

Symptom
Diagnostic procedure
Also check for
Poor AM or FM radio reception or interference
Antenna lead and/or sublead short or open in the wire
Audio unit power switch will not turn on (No information display and no sound)
Audio unit power switch will not turn off
No sound is heard from the speaker(s) (display is normal)
Audio system sound is weak or distorted (display is normal)
Audio unit button illumination does not work
Audio disc does not eject
Volume does not change
Volume does not increase with speed
Volume is too high or too low when driving at freeway speeds
Audio disc does not load
Audio disc does not play
Audio disc skips
Tyre pressure (over-inflated), disc smudged, dirty, or scratched
Audio remote switch does not work properly
Audio unit button does not work
Audio unit disc indicator does not work
USB audio device input sound is low or cannot be heard
Requirement of the USB devices (see Owner's manual)
USB audio device does not work
Requirement of the USB devices (see Owner's manual)