Audio System Symptom Troubleshooting Index (With Normal Audio)

Symptom	Diagnostic Procedure	Also Check for
Poor AM or FM radio reception or interference	Go to SYMPTOM TROUBLESHOOTING	Check radio reception: Do the Reception Level Indication Mode in the Self-Diagnostic Function - Refer to: How to Troubleshoot the Audio System, or Audio System Self-Diagnostic Function Aftermarket FM modulator Loose antenna mounting nut
Audio unit will not turn on (No information display and no sound)	Go to SYMPTOM TROUBLESHOOTING
No sound is heard from all the speakers (display is normal)	Go to SYMPTOM TROUBLESHOOTING	Aftermarket amplifier or speakers
Audio system sound is weak or distorted (display is normal)	Go to SYMPTOM TROUBLESHOOTING	Fader and balance positions Disc recording level Aftermarket amplifier or speakers
Auxiliary input sound is low or cannot be heard	Go to SYMPTOM TROUBLESHOOTING	Auxiliary stereo cables compatibility Auxiliary accessory volume
Radio preset memory is lost	Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Normal Audio), or Audio Unit Removal and Installation(With Display Audio (7-inch Screen)), or Audio Unit Removal and Installation(With Color Audio (5-inch Screen))	Internal error
Audio unit button does not work	Replace the audio panel - Refer to: Audio Unit Removal and Installation(With Normal Audio), or Audio Unit Removal and Installation(With Display Audio (7-inch Screen)), or Audio Unit Removal and Installation(With Color Audio (5-inch Screen))	Check the connector for poor connections or loose terminals between the audio unit and the audio panel
Audio disc does not load		Error Codes Damaged disc (scratches, fingerprints, marks, and distorted) Track/File format not supported
Audio disc does not eject		Error Codes Damaged disc (distorted) Disc with a label
Audio disc does not play		Error Codes Damaged disc (scratches, fingerprints, and marks)
Audio disc skips		Damaged disc (scratches, fingerprints, and marks) Tire pressure (over-inflated), disc smudged, or scratched
Audio remote switch does not work properly (audio unit buttons work)	Go to SYMPTOM TROUBLESHOOTING
USB device does not function	Go to SYMPTOM TROUBLESHOOTING	Error Codes USB device compatibility (see the Owner's Manual)
Bluetooth audio does not work		Bluetooth phone compatibility (see the Owner's Manual)
Audio unit button illumination does not work	Go to SYMPTOM TROUBLESHOOTING
Display does not dim or brighten with dimmer	Go to SYMPTOM TROUBLESHOOTING