| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| Poor AM or FM radio reception or interference (Except 1DIN 1CD type) | Symptom Troubleshooting | Antenna lead short or open in the wire |
| Poor AM or FM radio reception or interference (1DIN 1CD type) | Symptom Troubleshooting | Antenna lead short or open in the wire |
| Power switch will not turn ON (No information display and no sound) (Except 1DIN 1CD type) | Symptom Troubleshooting | |
| Power switch will not turn ON (No information display and no sound) (1DIN 1CD type) | Symptom Troubleshooting | |
| Power will not turn OFF (Except 1DIN 1CD type) | Symptom Troubleshooting | |
| Power will not turn OFF (1DIN 1CD type) | Symptom Troubleshooting | |
| No sound is heard from speakers (display is normal) (Except 1DIN 1CD type) | Symptom Troubleshooting | |
| No sound is heard from speakers (display is normal) (1DIN 1CD type) | Symptom Troubleshooting | |
| Audio system sound is weak or distorted (display is normal) | Symptom Troubleshooting | |
| Audio unit button illumination does not work (Except 1DIN 1CD type) | Symptom Troubleshooting | |
| Audio unit button illumination does not work (1DIN 1CD type) | Symptom Troubleshooting | |
| Cassette player unit button illumination does not work | Symptom Troubleshooting | |
| Radio preset memory is lost | Symptom Troubleshooting |
|
| Audio disc does not eject | Symptom Troubleshooting | |
| Cassette does not eject | Symptom Troubleshooting | |
| Audio disc changer does not load all six discs | Symptom Troubleshooting | |
| Audio disc changer does not move between discs | Symptom Troubleshooting | |
| Volume does not change | Symptom Troubleshooting | |
| Radio tuner does not change stations | Symptom Troubleshooting | |
| Audio disc does not load | Symptom Troubleshooting | |
| Display is blank or does not dim with dimmer (Except 1DIN 1CD type) | Symptom Troubleshooting | |
| Display is blank or does not dim with dimmer (1DIN 1CD type) | Symptom Troubleshooting | |
| Audio disc does not play | Symptom Troubleshooting | |
| Cassette does not play | Symptom Troubleshooting | |
| Audio disc skips | Symptom Troubleshooting | Tire pressure (over inflated) |
| Radio remote switch does not work properly | Symptom Troubleshooting |