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 GPS signals cannot be received. 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 driving track determined by the gyro located in the extension module and the vehicle speed signal.

1. Gyro sensor
   Used to calculate the direction by detecting angular velocity. It is located in the extension module.
   

2. Vehicle speed signal
   Used to calculate the vehicle driving 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 signal) and GPS navigation. This information is then compared with possible road shapes from the map data in the hard disk drive 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 film 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. DualDiscs that mate DVD recorded material on one side with CD digital audio material on the other cannot be played.
   
5. Keep the discs away from dirt. Be careful not to damage the discs or leave fingerprints on them.
   
6. Hold discs by the outer edge and center hole with the label side up.
   
7. 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.
   
8. 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.
   
9. Keep the discs away from direct sunlight. (Exposure to direct sunlight may cause deformation of the disc, making the disc unusable.)
   
10. Do not use odd-shaped CDs because these may cause player malfunctions.
    
11. Do not use discs whose recording portion is transparent or translucent because they may not be inserted, ejected or played normally.
    
12. Use only 4.7 in. (12 cm) CDs.
    
13. Do not use 3 in. (8 cm) CDs either with or without adaptors.
    

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 surfaces.
   

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 solvents such as record spray, antistatic agents, alcohol, benzine, thinners 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 text information called an 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 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 text information called a 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 have been 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. Standards 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 non-MP3 or non-WMA files are saved with an extension of ".mp3" or ".wma", those files may be wrongly recognized as MP3 or WMA files and played. A loud noise may occur and damage to the speakers 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 extension module and a "Bluetooth" compatible cellular phone*1 can be connected using a "Bluetooth" wireless connection. This enables the use of the hands-free function on the cellular phone even if the phone is 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.
   

2. Compatible hands-free devices
   

   Required "Bluetooth" specifications	Ver. 1.1 or higher (Ver. 2.1+EDR recommended)
   Compatible profiles	HFP (Hands Free Profile) Ver.1.0 or higher (Ver.1.5 recommended)*1 OPP (Object Push Profile) Ver.1.1 or higher*1 PBAP (Phone Book Access Profile) Ver.1.0 or higher*1 MAP (Message Access Profile) Ver.1.0 or higher*2 SPP (Serial Port Profile) Ver.1.1 or higher*3
   Maximum number of hands-free devices that can be registered (including audio devices)	4

   1. *1:This profile is necessary when using the hands-free function.
      
   2. *2:This profile is necessary when using the message function.
      
   3. *3:This profile is necessary when using the Entune system function.
      

   HINT:

   The amount of remaining battery charge displayed on the radio and display receiver assembly may be different from that of the "Bluetooth" device.

"Bluetooth" audio function

1. The "Bluetooth" built-in extension module 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 extension module.
   *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 extension module may be limited.
   

2. Compatible "Bluetooth" audio devices
   

   Required "Bluetooth" specifications	Ver. 1.1 or higher (Ver. 2.1+EDR recommended)
   Compatible profiles	A2DP (Advanced Audio Distribution Profile) Ver. 1.0 or higher (Ver. 1.2 recommended) AVRCP (Audio/Video Remote Control Profile) Ver. 1.0 or higher (Ver. 1.4 recommended)
   Maximum number of audio devices that can be registered (including hands-free devices)	4

   HINT:

   The amount of remaining battery charge displayed on the radio and display receiver assembly may be different from that of the "Bluetooth" device.

Entune is a service that enables the Entune applications and content from a cellular phone to be displayed on and operated from the extension module screen. As "Bluetooth" communication is used for the communication between a cellular phone and the extension module, before using the Entune service on the navigation system, the cellular phone needs to be registered with the navigation system as a "Bluetooth" device. For details regarding Entune operations, each of the applications and compatible phones, refer to http://www.toyota.com/entune/.

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 broadcast cannot. FM stereo has the smallest service area, and is prone to pick up static and other types of interference such as noise.
   

   Text in Illustration

   *a	FM (Stereo)
   *b	FM (Monaural)
   *c	AM

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.
   

   Text in Illustration

   *a	Phasing
   *b	Ionosphere





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.
   

   Text in Illustration

   *a

   Multipath





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.
   

   Text in Illustration

   *a

   Fade Out

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

"HD Radio" system is a radio system that broadcasts in the IBOC (In-Band On-Channel) form that the iBiquity Co. has developed. By expanding the bandwidth per channel of conventional FM/AM bands, digital audio and data signals are additionally transmitted.
"HD Radio" Technology manufactured under license from iBiquity Digital Corporation. U.S. and Foreign Patents. "HD Radio" and the HD and HD Radio logos are proprietary trademarks of iBiquity Digital Corp.
The information for the music currently being listened to is stored in the system and transmitted to the "iPod" connected to the system. The information transferred to the "iPod" can be used for purchasing the music through "iTunes" music store.

Satellite Digital Audio Radio Service (SDARS) is a satellite digital radio broadcast provided by Sirius XM Radio Inc. The broadcast (pay-type) is performed through satellites and terrestrial repeater networks. Several unique channels are available, and even if a vehicle changes locations, the same information can be received without breaks. Information such as song names, broadcast station names, etc. can be received. Also, traffic information can be received and displayed on the navigation screen.

NOTICE:

To receive audio-visual pay-type broadcasts, the customer must enter into a pay-type contract with XM Satellite Radio Inc. After entering into a contract, registration of an 8-digit XM Radio ID is necessary. Also, if parts are replaced, the XM Radio ID must be reregistered.

The Radio Broadcast Data System (RBDS) is broadcast through conventional FM radio broadcasts. Information such as song names, traffic information, broadcast station names, etc. can be received.

The No. 1 stereo jack adapter assembly is equipped with a USB terminal. Connecting a USB device or "iPod" to the No. 1 stereo jack adapter assembly allows music files to be played. Not only is it possible to play music from a USB device with audio functions, is also possible to play MP3 or WMA music files that are stored on a USB device. In addition, "iPod" control software is installed, allowing file selection from playlists and operation using shuffle mode.

HINT:

Operation through the controls of a USB device or "iPod" cannot be performed while it is connected.

USB audio system compatible model

1. USB device
   The following device formats can be used:
   

   Compatible USB device formats

   USB communication format: USB 2.0 HS (480Mbps) and 2.0 FS (12Mbps) File format: FAT16/32 (Windows) Class: Mass storage class

   MP3 and WMA files written in any format other than those listed above may not play correctly, and their names and folder names may not be displayed correctly.
   Items related to standards and limitations are as follows:
   
   1. Maximum directory hierarchy: 8 levels
      
   2. Maximum number of folders in device: 3000 (including the root folder)
      
   3. Maximum number of files in device: 9999
      
   4. Maximum number of files per folder: 255
      

2. "iPod"
   "iPhone", "iPod", "iPod classic", "iPod nano" and "iPod touch" are trademarks of Apple Inc., registered in the U.S. and other countries.
   The following "iPod", "iPod nano", "iPod classic", "iPod touch" and "iPhone" devices can be used with this system.
   Made for
   

   1. "iPod touch" (4th generation)
      
   2. "iPod touch" (3rd generation)
      
   3. "iPod touch" (2nd generation)
      
   4. "iPod touch" (1st generation)
      
   5. "iPod classic"
      
   6. "iPod with video"
      
   7. "iPod nano" (6th generation)
      
   8. "iPod nano" (5th generation)
      
   9. "iPod nano" (4th generation)
      
   10. "iPod nano" (3rd generation)
       
   11. "iPod nano" (2nd generation)
       
   12. "iPod nano" (1st generation)
       
   13. "iPhone 4"
       
   14. "iPhone 3GS"
       
   15. "iPhone 3G"
       
   16. "iPhone"
       

   HINT:

   Depending on differences between models or software versions etc., some models might be incompatible with this system.

The Automatic Sound Levelizer (ASL) function automatically adjusts the audio system volume level in order to compensate for increased vehicle noise (vehicle noise tends to increase as vehicle speed increases). The ASL adjusts the volume level based upon vehicle speed signals that it receives from the combination meter assembly.

AVC-LAN Outline

1. Components of the navigation system communicate with each other via the AVC-LAN.
   

2. The AVC-LAN uses a twisted pair of wires for its communication lines.
   

3. The master unit of the AVC-LAN is the radio and display receiver assembly.
   

   HINT:

   1. The radio and display receiver assembly has the resistance (60 to 80 Ω) necessary for communication.
      
   2. If a short or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the system will not operate normally.
      

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