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 assembly | ||
| Panel switch does not function. | Radio receiver assembly | |
| No sound can be heard from speakers (Audio is mute.). | Proceed to "No Sound can be Heard from Speakers" | |
| Proceed to "Speaker Circuit" | ||
| Stereo component amplifier assembly | ||
| 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" | ||
| Stereo component amplifier assembly | ||
| Radio receiver assembly | ||
| ASL does not function. | Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter" | |
| 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" | |
| No. 1 stereo jack adapter assembly | ||
| Radio receiver assembly | ||
| Abnormal noise occurs. | Proceed to "Noise Occurs" | |
| Stereo component amplifier assembly | ||
| Radio receiver assembly | ||
| Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" | |
| Disc cannot be inserted/played or disc is ejected right after insertion. | Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | |
| Disc cannot be ejected. | Proceed to "Disc cannot be Ejected" | |
| Sound quality is bad only when disc is played (Volume is too low.). | Proceed to "Sound Quality is Bad Only when Disc is Played (Volume is Too Low)" | |
| CD/DVD sound skips. | Proceed to "CD/DVD Sound Skips" | |
| Radio receiver does not illuminate at night. | Proceed to "Illumination Circuit" | |
| Radio receiver assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Portable player cannot be registered. | Proceed to "Portable Player cannot be Registered" | |
| Radio receiver assembly | ||
| Portable player cannot be connected manually/automatically. | Proceed to "Portable Player cannot be Registered" | |
| Proceed to "Portable Player cannot be Connected Manually/Automatically" | ||
| Radio receiver assembly | ||
| Cellular phone with portable audio function cannot be recognized as "Bluetooth" audio device even when connected using "Bluetooth". | Proceed to "Portable Player cannot be Registered" | |
| Proceed to "Portable Player cannot be Connected Manually/Automatically" | ||
| Radio receiver assembly | ||
| Sound of portable player cannot be heard from speakers, or sound is low. | Proceed to "Sound of Portable Player cannot be Heard from Speakers or Sound is Low" | |
| Radio receiver assembly | ||
| Portable player does not play even after "Bluetooth" audio mode is selected. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
| Radio receiver assembly | ||
| Portable player does not play. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
| Radio receiver assembly | ||
| Track information such as track number, track name and elapsed play time is not displayed. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Radio receiver assembly | ||
| Operation switches for portable player such as play, pause, repeat, random and scan are not displayed. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Radio receiver assembly | ||
| Battery condition of portable player is not displayed. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Radio receiver assembly | ||
| "Bluetooth" signal condition is not displayed. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Radio receiver assembly | ||
| Portable player cannot pause, select file, fast forward, fast rewind, play at random or scan. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
| Radio receiver assembly | ||
| Noise occurs or sound skips when portable player plays. | Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" | |
| Radio receiver assembly | ||
| Registered device cannot be deleted. | Proceed to "Registered Device cannot be Deleted" | |
| 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 "Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU" | |
| Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Multi-media interface ECU assembly | ||
| Navigation computer sub-assembly*1 | ||
| Display and navigation module display*2 | ||
| USB device or "iPod" is not recognized. | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Multi-media interface ECU assembly | ||
| Track information such as track, artist and album names are not displayed. | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Multi-media interface ECU assembly | ||
| USB device or "iPod" is recognized but cannot play or play in a sorted order. | Proceed to "USB Audio System Recognition/Play Error" | |
| Proceed to "Sound Signal Circuit between Multi-media Interface ECU and Stereo Jack Adapter" | ||
| No. 1 stereo jack adapter assembly | ||
| Multi-media interface ECU assembly |
*1: w/ Navigation System (for HDD)
*2: w/ Navigation System (for DVD)
| Symptom | Suspected Area | See page |
|---|---|---|
| A message is displayed indicating that music cannot be played. | Proceed to "Audio Recorded to HDD cannot be Played" | |
| Proceed to "Check Hard Disk Drive" in Operation Check | ||
| Radio receiver assembly | ||
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| Audio recorded to HDD cannot be played. | Proceed to "Check Hard Disk Drive" in Operation Check | |
| Proceed to "Audio Recorded to HDD cannot be Played" | ||
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| A message is displayed indicating that HDD is unable to copy because of low temperature. | Start engine and increase cabin temperature (near navigation ECU) | - |
| Proceed to "Check Hard Disk Drive" in Operation Check | ||
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| Sound cannot be heard for all tracks only when using sound library. | Proceed to "Check Hard Disk Drive" in Operation Check | |
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| CD tracks cannot be recorded ("REC" switch is not displayed.). | Proceed to "Audio cannot be Recorded to HDD" | |
| Radio receiver assembly | ||
| Navigation computer sub-assembly | ||
| CD tracks cannot be recorded. | Proceed to "Check Hard Disk Drive" in Operation Check | |
| Proceed to "Audio cannot be Recorded to HDD" | ||
| Radio receiver assembly | ||
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| Sound library items cannot be edited/deleted. | Proceed to "Cannot Edit or Delete Sound Library Items" | |
| Proceed to "Check Hard Disk Drive" in Operation Check | ||
| Navigation computer sub-assembly | ||
| Hard disk drive | ||
| Titles are not displayed for recorded songs. | Titles are not displayed when songs are recorded from a CD such as new album and that has not been recorded in the media database. | - |
| Title is displayed when CD is played but not displayed for songs that are recorded on HDD. | Proceed to "Correct Song Information is not Displayed" | |
| Titles displayed when playing CD and titles recorded on HDD do not match. | Proceed to "Correct Song Information is not Displayed" | |
| Song information on CD jacket and recorded song information do not match. | Proceed to "Correct Song Information is not Displayed" |