Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Pressing power switch does not turn on system | Proceed to "Pressing Power Switch does not Turn on System" | |
| Proceed to "Radio Receiver Power Source Circuit" | ||
| Radio receiver assembly | ||
| Panel switch does not function | Proceed to "Steering Pad Switch Circuit" | |
| Radio receiver assembly | ||
| No sound can be heard from speakers (audio is mute) | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "No Sound can be Heard from Speakers" | ||
| Proceed to "Speaker Circuit" | ||
| Radio receiver assembly | ||
| Sound quality is bad in all modes (volume is too low) | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | |
| Proceed to "Speaker Circuit" | ||
| Radio receiver assembly | ||
| ASL does not function | Proceed to "Speed Signal Circuit" | |
| External device sound cannot be heard or sound quality is bad (stereo jack is used) | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| Abnormal noise occurs | Proceed to "Noise Occurs" | |
| Radio receiver assembly | ||
| Radio broadcast cannot be received or poor reception | Proceed to "Radio Broadcast cannot be Received (Bad Reception)" | |
| CD cannot be inserted/played or CD is ejected right after insertion | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "CD cannot be Inserted/ Played or CD is Ejected Right After Insertion" | ||
| CD cannot be ejected | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "CD cannot be Ejected" | ||
| Sound quality is bad only when CD is played (volume is too low) | Proceed to "Sound Quality is Bad Only when CD is Played (Volume is Too Low)" | |
| CD sound skips | Proceed to "CD Sound Skips" | |
| Radio receiver cannot be illuminated at night | Proceed to "Illumination Circuit" | |
| Radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Audio system cannot be operated with steering pad switch | Proceed to "Steering Pad Switch Circuit" | |
| Radio receiver assembly | ||
| Steering pad switch cannot be illuminated at night | Proceed to "Illumination Circuit" | |
| Radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| External device sound cannot be heard or sound quality is bad (No. 1 stereo jack adapter assembly is used) | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| "AUX" is not displayed on system check mode screen | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | |
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| USB audio system sound cannot be heard or sound quality is bad. (USB connector is used.) | Proceed to "Data Signal Circuit between Radio Receiver and Stereo Jack Adapter" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| USB device or "iPod" is not recognized | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| Track information, such as track, artist and album names, is not displayed | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| USB device or "iPod" is recognized but cannot play, or can play but not in a sorted order | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly |