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 "Radio Receiver Power Source Circuit" | |
Proceed to "Pressing Power Switch does not Turn on System" | ||
Multi-media module receiver assembly | ||
Black screen (No image appears on navigation/audio screen.) | Proceed to "Black Screen" | |
Proceed to "Check Software Error History" in Operation Check | ||
Proceed to "Visual Mute Signal Circuit between Radio Receiver and Multi-display" | ||
Proceed to "Display Signal Circuit between Multi-display and Radio Receiver" | ||
Hard disc | ||
Accessory meter assembly | ||
Multi-media module receiver assembly | ||
Display does not dim (does not change to night screen) with tail switch on. | Confirm that the tail cancel is off. | - |
Proceed to "Display does not Dim when Light Control Switch is Turned ON" | ||
Proceed to "Illumination Circuit" | ||
Accessory meter assembly | ||
Multi-media module receiver assembly | ||
Power does not turn off. (Screen remains on.) | Proceed to "Radio Receiver Power Source Circuit" | |
Multi-media module receiver assembly | ||
Screen is distorted. | Proceed to "Radio Receiver Power Source Circuit" | |
Accessory meter assembly | ||
Multi-media module receiver assembly | ||
Screen flicker or color distortion | Proceed to "Screen Flicker or Color Distortion" | |
Proceed to "Visual Mute Signal Circuit between Radio Receiver and Multi-display" | ||
Proceed to "Display Signal Circuit between Multi-display and Radio Receiver" | ||
Proceed to "Radio Receiver Power Source Circuit" | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Illumination for panel switches does not come on with tail switch on. | Proceed to "Illumination for Panel Switch does not Come on with Tail Switch ON" | |
Proceed to "Illumination Circuit" | ||
Multi-media module receiver assembly | ||
Panel switches do not function. | Proceed to "Panel Switches do not Function" | |
Proceed to "Radio Receiver Power Source Circuit" | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
No feedback force is provided by knob of remote touch. | Proceed to "No Feedback Force Provided by Knob of Remote Touch" | |
Switch lights of remote touch do not illuminate. | Proceed to "Switch Lights of Remote Touch do not Illuminate" | |
Switch lights of remote touch always illuminate or cannot be controlled using rheostat. | Proceed to "Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat" | |
Switch operation of remote touch is not accepted. | Proceed to "Switch Operation of Remote Touch not Accepted" | |
Pointer does not reach screen edge. | Proceed to "Pointer does not Reach Screen Edge" | |
Pointer displayed/not displayed repeatedly. | Proceed to "Pointer Displayed/not Displayed Repeatedly" | |
Pointer is not displayed on screen or pointer does not move. | Proceed to "Pointer not Displayed on Screen or Pointer does not Move" | |
Knob of remote touch moves spontaneously. | Proceed to "Knob of Remote Touch Moves Spontaneously" |
Symptom | Suspected Area | See page |
---|---|---|
System cannot be operated by steering pad switch. | Proceed to "Panel Switches do not Function" | |
Proceed to "Steering Pad Switch Circuit" | ||
Multi-media module receiver assembly | ||
Illumination for steering pad switch does not come on with tail switch on. | Proceed to "Illumination Circuit" | |
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Screen cannot be changed to UIC setting screen. | Multi-media module receiver assembly | |
Thumbnails for opening image setting or screen off image setting do not update when USB device is connected. | Check that the USB device was not disconnected while transferring an image. | - |
Check that the screen was not changed to another function menu while transferring an image. | - | |
Proceed to "USB Audio System Recognition/Play Error" | ||
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Transfer button cannot be pressed. | Check that a USB device is connected. | - |
Check that the USB device is not in use. (USB audio system is playing etc.) | - | |
Proceed to "USB Audio System Recognition/Play Error" | ||
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Image data in USB device cannot be displayed. | Check that the designated folder name is used. | - |
Check that the file extension of the data is JPG or JPEG. | - | |
Check that the file name is 32 characters or less and available language is used. | - | |
Check that the image data size is 10 MB or less. | - | |
Check that the file system of the USB device is FAT16 or FAT32. | - | |
Proceed to "USB Audio System Recognition/Play Error" | ||
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Set opening image or screen off image is not displayed. | Check if it is the first start-up after disconnecting and reconnecting the +B terminal. (Reading from the HDD may be slow when the system is first starting-up.) | - |
Set the opening image or screen off image again. | - | |
Multi-media module receiver assembly | ||
Stored image cannot be deleted. | Multi-media module receiver assembly | |
Message indicating that USB device cannot be accessed is displayed. | Check that the USB device has not been disconnected while the navigation system is recognizing it. | - |
Proceed to "USB Audio System Recognition/Play Error" | ||
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Thumbnail images for opening image or screen off image are not displayed on setting screen. | Check if it is the first start-up after disconnecting and reconnecting the +B terminal. (Reading from the HDD may be slow when the system is first starting-up.) | - |
Set the opening image or screen off image again. | - | |
Multi-media module receiver assembly | ||
Image cannot be set for opening image or screen off image on setting screen. | Set the opening image or screen off image again. | - |
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
No sound can be heard from speakers. | Proceed to "No Sound can be Heard from Speakers" | |
Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver" (w/ Emergency Call Switch) | ||
Proceed to "Speaker Circuit" | ||
Check the "Most Communication Malfunction" is not Output | ||
Proceed to "AVC-LAN Circuit" | ||
Proceed to "Stereo Component Amplifier Power Source Circuit" | ||
DCM (Telematics transceiver) (w/ Emergency Call Switch) | ||
Stereo component amplifier assembly | ||
Multi-media module receiver assembly | ||
Abnormal noise occurs. | Proceed to "Noise Occurs" | |
Stereo component amplifier assembly | ||
Multi-media module receiver assembly | ||
DCM (Telematics transceiver) (w/ Emergency Call Switch) | ||
Sound quality is bad in all modes. (Volume is too low.) | Check that the ASL function is off. | - |
Proceed to "Poor Sound Quality in All Modes (Low Volume)" | ||
Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver" (w/ Emergency Call Switch) | ||
Proceed to "Speaker Circuit" | ||
Check the "Most Communication Malfunction" is not Output | ||
DCM (Telematics transceiver) (w/ Emergency Call Switch) | ||
Stereo component amplifier assembly | ||
Multi-media module receiver assembly | ||
ASL does not function. | Check that the ASL function is on. | - |
Meter / Gauge System | ||
Stereo component amplifier assembly | ||
Multi-media module receiver assembly | ||
Audio sound is difficult to hear | Stereo component amplifier assembly | |
Voice guidance does not function. | Proceed to "Voice Guidance does not Function" | |
Proceed to "Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver" (w/ Emergency Call Switch) | ||
Proceed to "Speaker Circuit" | ||
Stereo component amplifier assembly | ||
Multi-media module receiver assembly | ||
Voice menu screen is not displayed. (Voice recognition function does not turn on.) | Check if the voice recognition prompts function is "On". | - |
Proceed to "Panel Switches do not Function" | ||
Proceed to "Steering Pad Switch Circuit" | ||
Multi-media module receiver assembly | ||
When voice recognition switch is pressed, a short beep is emitted but voice cannot be recognized properly. | Proceed to "Voice is not Recognized" | |
Proceed to "Microphone Circuit between Microphone and Radio Receiver" | ||
Multi-media module receiver assembly | ||
Customizable parameters cannot be changed. (Customizable parameters can be changed by using the GTS.) | Multi-media module receiver assembly | |
Rear audio switch does not function. (w/ Audio Switch) | Proceed to "Rear Seat Control Switch Power Source Circuit" | |
Check the "Rear Console Recognition Disconnected" | ||
Rear power seat module switch (for Power Seat) | ||
Rear power seat module switch (for 4-Passenger with Ottoman) | ||
Rear power seat module switch (for 5-Passenger with Ottoman) | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Radio broadcast cannot be received or poor reception. | Proceed to "Radio Broadcast cannot be Received or Poor Reception" | |
Radio broadcast can be received but radio station cannot be displayed. (Some radio stations do not provide their name information.) | Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Disc cannot be inserted/played or disc is ejected right after insertion. | Proceed to "Check Optical Disc Error History" in Operation Check | |
Proceed to "Disc cannot be Inserted or is Ejected Right After Insertion" | ||
Disc cannot be ejected. | Proceed to "Check Optical Disc Error History" in Operation Check | |
Proceed to "Disc cannot be Ejected" | ||
Disc sound skips. | Proceed to "Check Optical Disc Error History" in Operation Check | |
Proceed to "CD/DVD Sound Skips" | ||
Screen color is poor only when watching DVD. | Change the color settings on the screen adjustment screen. | - |
Multi-media module receiver assembly | ||
Sound quality is bad only when disc is played. (Volume is too low.) | Proceed to "Check Optical Disc Error History" in Operation Check | |
Proceed to "Sound Quality is Bad Only when Disc is played (Volume is Too Low)" |
Symptom | Suspected Area | See page |
---|---|---|
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 | ||
Multi-media module 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 | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Voice menu screen is not displayed. (Voice recognition function does not turn on.) | Check if the voice recognition prompts function is "On". | - |
Proceed to "Panel Switches do not Function" | ||
Proceed to "Steering Pad Switch Circuit" | ||
Multi-media module receiver assembly | ||
When voice recognition switch is pressed, a short beep is emitted but voice cannot be recognized properly. | Proceed to "Voice is not Recognized" | |
Proceed to "Microphone Circuit between Microphone and Radio Receiver" | ||
Hard disc | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Bluetooth is inoperative. | Proceed to "Microphone Circuit between Microphone and Radio Receiver" | |
Multi-media module receiver assembly | ||
Cellular phone registration failure. | Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | |
Multi-media module receiver assembly | ||
Cellular phone cannot make outgoing/incoming calls or call in a certain place. | Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls" | |
Multi-media module receiver assembly | ||
Message that prompts to check the cellular phone is displayed. | Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls" | |
Multi-media module receiver assembly | ||
Phonebook data cannot be transferred manually or automatically. | Check the automatic download contract setting | - |
When transferring phonebook data, OBEX authentication may be required. Enter "1234" into the "Bluetooth" phone. | - | |
Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | ||
Multi-media module receiver assembly | ||
Volume of other caller's voice is not at an appropriate volume level, there is noise, sound quality is poor or other caller's voice cannot be heard. | Proceed to "Check Hands-free Voice Quality and Volume Setting" in Operation Check | |
Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted" | ||
Multi-media module receiver assembly | ||
Stereo component amplifier assembly | ||
Other caller cannot hear your voice at an appropriate volume level, there is noise or an echo, sound quality is poor or other caller cannot hear your voice. | Proceed to "Check Hands-free Voice Quality and Volume Setting" in Operation Check | |
Proceed to "The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted" | ||
Proceed to "Microphone Circuit between Microphone and Radio Receiver" | ||
Multi-media module receiver assembly | ||
E-mail/SMS cannot be received or sent. | Check whether messages can be received/sent using the cellular phone. | - |
Check that the phone is registered as a hands-free device. | - | |
Check the sending and receiving e-mails via the navigation system setting. | - | |
Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure" | ||
Multi-media module receiver assembly |
Symptom | Suspected Area | See page |
---|---|---|
Portable player cannot be registered. | Proceed to "Portable Player cannot be Registered" | |
Multi-media module 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" | ||
Multi-media module 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" | ||
Multi-media module 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" | |
Multi-media module 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" | |
Multi-media module receiver assembly | ||
Portable player does not play. | Proceed to "Does not Play even after Bluetooth Audio Mode is Selected" | |
Multi-media module receiver assembly | ||
Track information such as track number, track name, elapsed play time and playlist is not displayed. | Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device" | |
Multi-media module 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" | |
Multi-media module 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" | |
Multi-media module 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" | |
Multi-media module 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" | |
Multi-media module receiver assembly | ||
Noise occurs or sound skips when portable player plays. | Proceed to "Noise Occurs or Sound Skips when Portable Player Plays" | |
Multi-media module receiver assembly | ||
Registered device cannot be deleted. | Proceed to "Registered Device cannot be Deleted" | |
Multi-media module 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" | |
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
USB device or "iPod" is not recognized. | Proceed to "USB Audio System Recognition/Play Error" | |
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Track information such as track, artist and album names are not displayed. | Proceed to "USB Audio System Recognition/Play Error" | |
No, 1 Stereo jack adapter assembly | ||
Multi-media module 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" | |
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
Album cover art cannot be displayed. | Check that Display Cover Art on the "iPod" Settings screen is set to on. | - |
Check that a JPEG file is used for the cover art. | - | |
"iPod" tagging function cannot be used. | Check if a message indicating that the capacity for tag information is full is displayed. | - |
Proceed to "USB Audio System Recognition/Play Error" | ||
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly | ||
"iPod" battery cannot be charged. | Proceed to "USB Audio System Recognition/Play Error" | |
No, 1 Stereo jack adapter assembly | ||
Multi-media module receiver assembly |