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" | |
| Radio receiver power source circuit | ||
| Replace radio receiver assembly | ||
| Panel switches do not function | Proceed to "Steering Pad Switch Circuit" | |
| Radio receiver power source circuit | ||
| Replace radio receiver assembly | ||
| No sound can be heard from speakers. (Audio is mute.) | Radio receiver power source circuit | |
| Proceed to "No Sound can be Heard from Speakers" | ||
| Speaker circuit | ||
| Replace radio receiver assembly | ||
| Sound quality is bad in all modes. (Volume is too low.) | Proceed to "Poor Sound Quality in All Modes (Low Volume)" | |
| Speaker circuit | ||
| Replace radio receiver assembly | ||
| ASL does not function. | Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter" | |
| Abnormal noise occurs. | Speaker installation condition | - |
| Speaker cone paper breakage | - | |
| Foreign object in speakers | - | |
| Replace radio receiver assembly | ||
| Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" | |
| CD cannot be inserted / played or CD is ejected right after insertion. | Radio receiver power source circuit | |
| Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion" | ||
| CD cannot be ejected. | 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" | |
| External device sound cannot be heard or sound quality is bad. (Stereo jack is used.) | Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | |
| Replace No. 1 stereo jack adapter assembly | ||
| Replace radio receiver assembly | ||
| Radio receiver cannot be illuminated at night. | Illumination circuit | |
| Replace radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Audio system cannot be operated with steering pad switch. | Steering pad switch circuit | |
| Replace radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| USB audio 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" | ||
| Replace No. 1 stereo jack adapter assembly | ||
| Replace 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" | ||
| Replace No. 1 stereo jack adapter assembly | ||
| Replace radio receiver assembly | ||
| USB device or "iPod" is recognized but cannot play nor play in a sorted order | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter" | ||
| Replace No. 1 stereo jack adapter assembly | ||
| Replace radio receiver assembly | ||
| USB device or "iPod" cannot charge | Proceed to "Radio Receiver Power Source Circuit" | |
| Proceed to "USB Device or "iPod" cannot Charge" | ||
| Replace radio receiver assembly |