Navigation System System Description

Vehicle position tracking methods
It is essential that the navigation system correctly tracks the current vehicle position and displays it on the map. There are 2 methods to track the current vehicle position: autonomous (dead reckoning) and GPS* (satellite) navigation. Both navigation methods are used in conjunction with each other.
*GPS (Global Positioning System)

HINT:

The combination of autonomous and GPS navigation makes it possible to display the vehicle position even when the vehicle is in places where the GPS cannot receive a signal. When only autonomous navigation is used, however, the mapping accuracy may slightly decrease.

Autonomous navigation
This method determines the relative vehicle position based on the running track determined by the gyro located in the navigation receiver assembly and the vehicle speed sensor signal.

1. Gyro sensor
   Used to calculate the direction by detecting angular velocity. It is located in the navigation receiver assembly.
   

2. Vehicle speed sensor signal
   Used to calculate the vehicle running distance.
   

GPS^* navigation (Satellite navigation)
This method detects the absolute vehicle position using radio waves from GPS satellites.
*GPS satellites were launched by the U.S. Department of Defense for military purposes.

Map matching
The current driving route is calculated by autonomous navigation (according to the gyro sensor and vehicle speed sensor) and GPS navigation. This information is then compared with possible road shapes from the map data in the map disc and the vehicle position is set onto the most appropriate road.

Touch switch
Touch switches are touch-sensitive (interactive) switches operated by touching the screen. When a switch is pressed, the outer glass bends in to contact the inner glass at the pressed position. By doing this, the voltage ratio is measured and the pressed position is detected.

A compact disc player uses a laser pickup to read digital signals recorded on a compact disc (CD). By converting the digital signals to analog, it can play music and audio.

CAUTION:

Do not look directly at the laser pickup because the CD player uses an invisible laser beam. Be sure to operate the player only as instructed.

NOTICE:

1. Do not disassemble any part of the CD player.
   
2. Do not apply oil to the CD player.
   
3. Do not insert anything but a CD into the CD player.
   

Usable discs

1. This player can play only audio CDs, CD-Rs (CD-Recordable), and CD-RWs (CD-ReWritable) that have any of the following marks:
   

   
   
   
   

Precautions for use of discs

NOTICE:

1. Copy-protected CDs cannot be played.
   
2. CD-Rs and CD-RWs may not be played depending on the recording conditions or characteristics of the discs, or due to damage, dirt or deterioration caused by leaving the discs in the cabin for a long time.
   
3. Unfinalized CD-Rs and CD-RWs cannot be played.
   
4. Keep the discs away from dirt. Be careful not to damage the discs or leave your fingerprints on them.
   
5. Hold discs by the outer edge and center hole with the label side up.
   
6. Leaving the disc exposed halfway out of the slot for a long time after pressing the disc eject button may cause deformation of the disc, making the disc unusable.
   
7. If discs have adhesive tape, stickers, CD labels or any traces of such labels attached, the discs may not be ejected or player malfunctions may result.
   
8. Keep the discs away from direct sunlight. (Exposure to direct sunlight may cause deformation of the disc, making the disc unusable.)
   
9. Do not use odd-shaped CDs because these may cause player malfunctions.
   
10. Do not use discs whose recording portion is transparent or translucent because they may not be inserted, ejected or played normally.
    

HINT:

1. When it is cold or it is raining, if the windows mist up, mist and condensation may form in the player. In such cases, the CD may skip or stop in the middle of play. Ventilate or dehumidify the cabin for a while before using the player.
   
2. The CD may skip if the player experiences strong vibrations when the vehicle is driven on rough roads or similar uneven surface(s).
   

Cleaning

NOTICE:

Do not use a lens cleaner because it may cause a malfunction in the pickup portion of the player.

1. If dirt is on the disc surface, wipe it clean with a soft dry cloth such as an eyeglass cleaner for plastic lenses from the inside to the outside in a radial direction.
   

   NOTICE:

   1. Pressing on the disc by hand or rubbing the disc with a hard cloth may scratch the disc surface.
      
   2. Use of solvent such as a record spray, antistatic agent, alcohol, benzine, and thinner or a chemical cloth may cause damage to the disc, making the disc unusable.
      

Playable MP3 file standards

Playable WMA file standards

ID3 tag and WMA tag

1. Additional textual information called ID3 tag can be input to MP3 files. Information such as song titles and artist names can be stored.
   

   HINT:

   This player is compatible with the ID3 tags of ID3 Ver. 1.0 and 1.1, and ID3 Ver. 2.2 and 2.3. (Number of characters complies with ID3 Ver. 1.0 and 1.1.)

2. Additional textual information called WMA tag can be input to WMA files. Information such as song titles and artist names can be stored.
   

Usable media

1. Only CD-ROMs, CD-Rs (CD-Recordable), and CD-RWs (CD-ReWritable) can be used to play MP3/WMA files.
   

   NOTICE:

   1. CD-Rs and CD-RWs are more easily affected by a hot and humid environment than discs used for normal audio CDs. For this reason, some CD-Rs and CD-RWs do not play.
      
   2. If there are fingerprints or scratches on a disc, the disc may not play or the CD may skip.
      
   3. Some CD-Rs and CD-RWs may deteriorate if they are left in the cabin for a long time.
      
   4. Keep CD-Rs and CD-RWs in an opaque case.
      

Usable media format

1. Usable media format
   
   

   Disc format	CD-ROM Mode 1, CD-ROM XA Mode 2 Form 1
   File format	ISO9660 Level 1 and Level 2 (Joliet, Romeo)

   HINT:

   1. As for MP3/WMA files written in any unlisted format, the contents of the files may not be played normally or the file names or folder names may not be displayed correctly.
      
   2. This player is compatible with multi-session discs and can play CD-Rs and CD-RWs on which MP3/WMA files are added. However, only the first session can be played.
      
   3. Discs whose first session includes both music data and MP3 or WMA format data cannot be played.
      

2. Standard and restrictions
   
   

   Maximum directory levels	8 levels
   Maximum number of characters for a folder name/file name	32 characters
   Maximum number of folders	192 (Including empty folders, route folders, and folders that do not contain MP3/WMA files)
   Maximum number of files in a disc	255 (Including non-MP3/WMA files)

File names

1. Only files with an extension of ".mp3" or ".wma" can be recognized and played as MP3 or WMA files.
   

2. Save MP3 or WMA files with an extension of ".mp3" or ".wma".
   

   NOTICE:

   If saving non-MP3 or non-WMA files with an extension of ".mp3" or ".wma", those files are wrongly recognized as MP3 or WMA files and played. A loud noise may occur and damage to the speaker may result.

"Bluetooth" is a trademark owned by Bluetooth SIG. Inc.

"Bluetooth" is a wireless connection technology that uses the 2.4 GHz frequency band.

HINT:

The communication performance of "Bluetooth" may vary depending on obstructions or radio wave conditions between communication devices, electromagnetic radiation, communication device sensitivity or antenna capacity.

Hands-free function

1. The "Bluetooth" built-in navigation receiver assembly and a "Bluetooth" compatible cellular phone*1 can be connected using a "Bluetooth" wireless connection. This enables use of the hands-free function on the cellular phone even the phone may be in a pocket or bag. For this reason, it is not necessary to use a connector or cable to connect the cellular phone.
   *1: Some versions of "Bluetooth" compatible cellular phones may not function.
   

"Bluetooth" audio function

1. The "Bluetooth" built-in navigation receiver assembly and a "Bluetooth" compatible portable audio player*2 can be connected using a "Bluetooth" wireless connection. This enables files stored in the portable audio player to be heard from the vehicle speakers. In addition, operations such as play/stop can be performed directly from the navigation receiver assembly.
   *2: Some versions of "Bluetooth" compatible audio players may not be able to operate the "Bluetooth" function, or music may play, but functions available using the navigation receiver assembly may be limited.
   

2. Available "Bluetooth" audio devices
   
   

   Required "Bluetooth" specifications	Ver. 1.1, or higher (Recommended: Ver. 2.0+EDR or higher)
   Compatible profiles	A2DP (Advanced Audio Distribution Profile) Ver. 1.0 AVRCP (Audio/Video Remote Control Profile) Ver. 1.0 or higher (Ver. 1.3 or higher recommended)
   Maximum number of audio devices that can be registered	2

   HINT:

   The amount of remaining battery charge displayed on the navigation receiver assembly may be different from that of the portable player.

Radio frequency band

1. Radio broadcasts use the radio frequency bands shown in the table below.
   

   
   
   
   

Service area

1. The service areas of AM and FM broadcasts are vastly different. Sometimes an AM broadcast can be received very clearly but an FM stereo cannot. FM stereo has the smallest service area, and is prone to pick up static and other types of interference such as noise.
   

Radio reception problems

HINT:

In addition to static, other problems such as "phasing", "multipath", and "fade out" exist. These problems are not caused by electrical noise, but by the radio signal propagation method itself.

1. Phasing
   AM broadcasts are susceptible to electrical interference and another kind of interference called phasing. Occurring only at night, phasing is the interference created when a vehicle receives 2 radio wave signals from the same transmitter. One signal is reflected off the ionosphere and the other signal is received directly from the transmitter.
   





2. Multipath
   Multipath is a type of interference created when a vehicle receives 2 radio wave signals from the same transmitter. One signal is reflected off buildings or mountains and the other signal is received directly from the transmitter.
   





3. Fade out
   Fade out is caused by objects (buildings, mountains and other such large obstacles) that deflect away part of a signal, resulting in a weaker signal when the object is between the transmitter and vehicle. High frequency radio waves, such as FM broadcasts, are easily deflected by obstructions. Low frequency radio waves, such as AM broadcasts, are less likely to deflect.
   

Noise problem
Technicians must have a clear understanding about each customer's noise complaint. Use the following table to diagnose noise problems.

The Automatic Sound Levelizer (ASL) function automatically adjusts the sound volume in order to enable clear audio quality even when vehicle noise increases (as vehicle noise increases, the volume is turned up, etc.).
Vehicle speed signals are received from the combination meter assembly and used for the ASL control.

The navigation system has a diagnostic function (the result is indicated on the master unit).

Service Menu Screen

HINT:

Each item is grayed out or not displayed based on the device settings.

Failure Diagnosis Screen

HINT:

Each item is grayed out or not displayed based on the device settings.

1. System Check Mode Screen
   

   
   
   
   
   1. *1: Device Name List No. 1
      

      HINT:

      1. Device Name List No. 1 displays some of the devices that make up the navigation system.
         
      2. The names of the components from Device Name List No. 1 are shown in the following table.
         
         

         Name	Component	Connection Method
         AVN	Navigation receiver assembly	-

   1. *2: Check Result
      
      

      HINT:

      Result codes for all devices are displayed.

      
      

      Result	Meaning	Action
      OK	The device does not respond with a DTC.	-
      EXCH	The device responds with a "replace"-type DTC.	Look up the DTC in "Unit Check Mode" and replace the device.
      CHEK	The device responds with a "check"-type DTC.	Look up the DTC in "Unit Check Mode".
      NCON	The device was previously present, but does not respond in diagnostic mode.	- Check power supply wire harness of the device. - Check the AVC-LAN communication line of the device.
      NRES	The device responds in diagnostic mode, but gives no DTC information.	- Check power supply wire harness of the device. - Check the AVC-LAN communication line of the device.

   1. *3: Memory Clear
      

      HINT:

      1. Present and history DTCs and registered connected device names are cleared.
         
      2. Press the "Memory CLR" switch for 3 seconds.
         
   1. *4: Recheck
      

      HINT:

      1. A system check will be performed again after the memory is cleared.
         
      2. The Recheck switch will dim during a system check.
         
   1. *5: Device Name List No. 2
      

      HINT:

      1. Device Name List No. 2 displays some of the devices that make up the navigation system.
         
      2. The names of the components from Device Name List No. 2 are shown in the following table.
         
         

         Name	Component	Connection Method
         MIC	Telephone microphone assembly	Vehicle wire harness
         AUX	Stereo jack adapter	Vehicle wire harness





2. Unit Check Mode Screen
   

   
   
   
   
   

   Screen Description

   Display	Content
   *1: Device name	Target device
   *2: History DTC	Diagnostic memory results and stored DTCs are displayed.
   *3: Present DTC	DTCs output in the service check are displayed.
   *4: DTC	DTC (Diagnostic Trouble Code)
   *5: Timestamp	The time and date of history DTCs are displayed. (The year is displayed in 2-digit format.)
   *6: Diagnosis clear switch	Pushing this switch for 3 seconds clears the diagnostic memory data of the target device. (Both response to diagnostic system check result and the displayed data are cleared.)

Function Check/Setting Screen

HINT:

Each item is grayed out or not displayed based on the device settings.

1. Microphone&Voice Recognition Check Screen
   

   
   
   
   
   

   Screen Description

   Display	Content
   *1: Microphone input level meter	Monitors the microphone input level every 0.1 sec. and displays the results in 8 different levels.
   *2: Recording switch	Starts recording.
   *3: Stop switch	Stops recording and playing.
   *4: Play switch	Plays the recorded voice.
   *5: Recording indicator	Comes on while recording.

   HINT:

   1. The microphone is active at all times when this screen is displayed.
      
   2. While recording or playing, the switches other than the stop switch cannot be pushed.
      
   3. When no recording is present, the play switch cannot be pushed.
      
   4. Recording will stop after 5 seconds or when the stop switch is pushed.
      




2. GPS Information Screen
   

   
   
   
   
   1. *1: Satellite information
      Information from a maximum of 12 satellites is displayed on the screen. This information includes the target GPS satellite number, elevation angle, direction and signal level.
      
   1. *2: Receiving condition
      
      

      Screen Description

      Display	Content
      T	The system is receiving a GPS signal, but is not using it for location.
      P	The system is using the GPS signal for location.
      -	The system cannot receive a GPS signal.

   1. *3: Measurement information
      
      

      Screen Description

      Display	Content
      2D	2-dimensional location method is being used.
      3D	3-dimensional location method is being used.
      NG	Location data cannot be used.
      Error	Reception error has occurred.
      -	Any other state.

   1. *4: Position information
      
      

      Screen Description

      Display	Content
      Position	Latitude and longitude information on the current position is displayed.

   1. *5: Date information
      
      

      Screen Description

      Display	Content
      Date	The date/time information obtained from GPS signal is displayed in Greenwich Mean Time (GMT).





3. Vehicle Sensors Screen
   

   
   
   
   
   

   Vehicle Signal

   Display	Content
   *1: SPD	SPD signal condition is displayed.

   
   

   Sensor Signal

   Display	Content
   *2: Gyro sensor	Gyro sensor output condition is displayed. 2.1 to 2.9 V

   HINT:

   Signals are updated once per second only when vehicle sensor signals are changed.





4. Vehicle Signal Check Mode Screen
   

   
   
   
   
   

   Screen Description

   Display	Content
   Battery	Battery voltage is displayed.
   IG	IG switch ON/OFF state is displayed.
   REV	Reverse signal ON/OFF state is displayed.
   SPEED	Vehicle speed is displayed in km/h.
   TAIL	Tail signal (Light control switch) ON/OFF state is displayed.

   HINT:

   1. Only items sending vehicle signals will be displayed.
      
   2. This screen is updated once per second when input signals to the vehicle are changed.
      




5. Sound Library Information Screen
   

   
   
   
   
   

   Screen Description

   Display	Content
   *1: Recording function setting for HDD	Recording to HDD permitted (ON)/not permitted (OFF)
   *2: Number of albums	Number of albums recorded in HDD
   *3: Number of tracks	Number of tracks recorded in HDD
   *4: Free space in HDD	Free space in HDD partition for sound library