NAVIGATION SYSTEM (for HDD) SYSTEM DESCRIPTION


  1. NAVIGATION SYSTEM OUTLINE


    1. Vehicle position tracking methods


      1. 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.

        Tech Tips

        *: GPS (Global Positioning System)

        A00DQDDE02
        Operation Description
        Vehicle Position Calculation The navigation receiver assembly calculates the current vehicle position (direction and current position) using the direction deviation signal from the gyro sensor and running distance signal from the vehicle speed sensor and creates the driving route.
        Map Display Processing The navigation receiver assembly processes the vehicle position data, vehicle running track, and map data from the map data.
        Map Matching The map data from the map data is compared to the vehicle position and running track data. Then, the vehicle position is matched with the nearest road.
        GPS Correction The vehicle position is matched to the position measured by the GPS. Then, the measurement position data from the GPS unit is compared with the vehicle position and running track data. If the position is very different, the GPS measurement position is used.
        Distance Correction The running distance signal from the vehicle speed sensor includes error caused by tire wear and slippage between the tires and road surface. Distance correction is performed to account for this. The navigation ECU automatically offsets the running distance signal to make up for the difference between it and the distance data of the map. The offset is automatically updated.

        Tech Tips

        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 radio wave cannot be received. When only autonomous navigation is used, the mapping accuracy may slightly decline.

        A00DS32E02

    2. Autonomous navigation

      This method determines the relative vehicle position based on the running track determined by the gyro and vehicle speed sensors.


      1. Gyro sensor

        Calculates the direction by detecting angular velocity. It is located in the navigation receiver assembly.

      2. Vehicle speed sensor

        Used to calculate the vehicle running distance.

    3. GPS navigation (satellite navigation)

      This method detects the absolute vehicle position using radio waves from a GPS satellite*.

      Tech Tips

      *: GPS satellites were launched by the U.S. Department of Defense for military purposes.

      A00DS20E01
      Number of Satellites Measurement Description
      2 or less Measurement is impossible The vehicle position cannot be obtained because the number of satellites is not enough.
      3 2-dimensional measurement is possible The vehicle position is obtained based on current longitude and latitude (this is less precise than 3-dimensional measurement).
      4 3-dimensional measurement is possible The vehicle position is obtained based on current longitude, latitude and altitude.

    4. 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 data and the vehicle position is set onto the most appropriate road.

      A00DR52E02

  2. TOUCH SCREEN OUTLINE


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

      A00DUVME01

  3. DISC PLAYER OUTLINE


    1. A disc player uses a laser pickup to read digital signals recorded on discs. By converting the digital signals to analog, music and other content can be played.

      CAUTION:

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

      Note


      • Do not disassemble any part of the disc player.

      • Do not apply oil to the disc player.

      • Do not insert anything but a disc into the disc player.

    2. Usable discs


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

        A00DU2R

    3. Precautions for handling discs

      Note


      • Copy-controlled CDs cannot be used.

      • Some CD-Rs and CD-RWs are not playable as a result of: 1) the type of recording method used, 2) the type of disc, 3) scratches, 4) contamination, or 5) the disc being in the vehicle for an extended amount of time, leading to deterioration.

      • CD-Rs and CD-RWs that have not been finalized cannot be played.

      • PAL or SECAM color television standard discs cannot be played (only NTSC discs can be played).

      • DualDiscs that mate DVD recorded material on one side with CD digital audio material on the other cannot be played.

      • When handling a disc, be careful not to put fingerprints, stains or scratches on the disc.

      • When holding a disc, pinch the center hole and edge of the disc with your fingers with the printed side upward.

      • If a disc is ejected by pressing the eject button and left partially ejected for an extended period of time, the disc may become deformed and unusable.

      • A disc may not be able to be ejected or the player may become damaged if: 1) cellophane tape, stickers, CD-R labels or rental CD labels are attached; or 2) residue from removed tape, stickers or labels remains.

      • Avoid direct sunlight when storing discs as they may become deformed and unusable.

      • Do not use uniquely-shaped discs as they may damage the player.

      • Do not use discs where part of the recording surface is transparent or translucent. If used, the disc may be unable to be properly inserted, ejected or played.

      Tech Tips


      • Just as condensation fogs the vehicle windows during wet or cold weather, condensation may also form inside the player. If condensation forms, disc skipping or playback stoppage may occur. Ventilate or dehumidify the vehicle for a while before using the player.

      • If the player vibrates severely due to driving on a rough road, the disc may skip.

    4. Cleaning

      Note

      Do not use lens cleaner when cleaning the player, as it may damage the pickup part of the player.


      1. A00DQ2N

        To clean dirty discs, use a dry, soft cloth such as those used for glasses with plastic lenses.

        Lightly wipe radially from the center of the disc.

        Note


        • Pressing the disc roughly with your hand or scrubbing with a hard cloth may scratch the disc surface.

        • Using record spray, antistatic agents, alcohol, benzene, thinner or other solvents, or chemical cloths on a disc may damage the disc, making the disc unusable.

  4. MP3/WMA OUTLINE

    Tech Tips

    Some audio and visual systems do not support the WMA format.


    1. Playable MP3 file standards

      Compatible standard MP3 (MPEG1 LAYER3, MPEG2 LSF LAYER3)
      Compatible sampling frequency

      • MPEG1 LAYER3: 32, 44.1, 48 (kHz)

      • MPEG2 LSF LAYER3: 16, 22.05, 24 (kHz)
      Compatible bit rate

      • MPEG1 LAYER3: 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 (kbps)

      • MPEG2 LSF LAYER3: 64, 80, 96, 112, 128, 160 (kbps)

      • Compatible with VBR
      Compatible channel mode Stereo, joint stereo, dual channel, monaural

    2. Playable WMA file standards

      Compatible standard WMA Ver. 7, 8, and 9
      Compatible sampling frequency 32, 44.1, 48 (kHz)
      Compatible bit rate

      • Ver. 7, 8: CBR48, 64, 80, 96, 128, 160, 192 (kbps)

      • Ver. 9: CBR48, 64, 80, 96, 128, 160, 192, 256, 320 (kbps)

      • Compatible with playback of channel 2 only

    3. ID3 tag and WMA tag


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

        Tech Tips

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

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

    4. Usable media


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

        Note


        • 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 may not be playable.

        • If there are fingerprints or scratches on the disc, the disc may not be playable or the CD may skip.

        • Some CD-Rs and CD-RWs deteriorate if they are left in the cabin for a long time.

        • Keep CD-Rs and CD-RWs in a storage case that is non-transparent.

    5. Usable media format


      1. Usable media format

        Disc format CD-ROM Mode 1, CD-ROM XA Mode 2 Form 1
        File format ISO 09660 Level 1 and Level 2 (Joliet, Romeo)

        Tech Tips


        • As for MP3/WMA files written in any format other than those above, the contents of the files may not be playable or the file names or folder names may not be displayed correctly.

        • 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.

        • 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, root folders and folders that do not contain MP3/WMA files)
        Maximum number of files on a disc 255 (Including non-MP3/WMA files)

    6. 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".

        Note

        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 speakers may result.

  5. "BLUETOOTH" OUTLINE


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

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

      Tech Tips

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

    3. Handsfree function


      1. The "Bluetooth" built into the navigation receiver assembly and a "Bluetooth" compatible cellular phone* can be connected using a "Bluetooth" wireless connection. This enables use of the handsfree function on the cellular phone even though 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.


        • *: Some versions of "Bluetooth" compatible cellular phones may not function.

        A00DUGLE01
        Text in Illustration
        *1

        Navigation Receiver Assembly

        ("Bluetooth" Receiver Antenna Built in)

        		 *3 Cellular Tower
        *2 "Bluetooth" Compatible Cellular Phone - -

    4. "Bluetooth" audio function


      1. The "Bluetooth" built into the navigation receiver assembly and a "Bluetooth" compatible portable audio player* 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.

        *: 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

        "Bluetooth" specifications Ver. 1.1, or higher (Recommended: Ver. 2.0 + EDR or higher)
        Following 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

        Tech Tips

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

  6. RADIO DESCRIPTION


    1. Radio frequency band


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

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    2. A00DTK0E06
      Text in Illustration
      *1 FM (Stereo)
      *2 FM (Monaural)
      *3 AM

      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.

    3. Radio reception problems

      Tech Tips

      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. A00DU2AE10
        Text in Illustration
        *1 Phasing
        *2 Ionosphere

        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. A00DTJAE10
        Text in Illustration
        *1 Multipath

        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. A00DU3VE09
        Text in Illustration
        *1 Fade Out

        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 much more difficult to deflect.

    4. Noise problem

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

      Radio Frequency Noise Occurrence Condition Presumable Cause
      AM Noise occurs in a specified area Foreign noise
      AM Noise occurs when listening to an intermittent broadcast An identical program transmitted from multiple towers can cause noise where the signals overlap
      AM Noise occurs only at night Music beat from a distant broadcast
      FM Noise occurs while driving in a specified area Multipath or phasing noise resulting from a change in FM frequency

      Tech Tips

      If the noise does not match the examples above, refer to the descriptions about phasing and multipath.

  7. AUTOMATIC SOUND LEVELIZER (ASL) FUNCTION OUTLINE


    1. The ASL function automatically adjusts the sound volume in order to enable clear audio quality even when vehicle noise increases (as vehicle speed increases, the volume is turned up, etc.).

      Vehicle speed signals are received from the combination meter assembly and used by ASL control.

  8. DIAGNOSTIC FUNCTION OUTLINE


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

    2. Diagnostic trouble codes are allocated to each component on the AVC-LAN and AVC-LAN plus. Using this code, the component can be displayed in the diagnostic function.

  9. DIAGNOSIS DISPLAY DETAILED DESCRIPTION

    Tech Tips


    • This section contains a detailed description of displays in diagnostic mode.

    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.


    1. Service Menu Screen

      A00DU2CE01

      Tech Tips

      Some items may be grayed out or not displayed based on the device settings.

    2. Failure Diagnosis Screen

      A00DTCGE01

      Tech Tips

      Some items may be grayed out or not displayed based on the device settings.


      1. System Check Mode Screen

        A00DQ8LE01

        • *1: Device Name List No. 1

          Tech Tips


          • Device Name List No. 1 displays some of the devices that make up the navigation system.

          • 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 -

        • *2: Check Result

          Tech Tips

          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 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 of the device.

        • *3: Memory Clear

          Tech Tips


          • Present and past DTCs and registered connected device names are cleared.

          • Data is cleared by pressing the "Memory CLR" switch for 3 seconds.


        • *4: Recheck

          Tech Tips


          • A system check will be performed again after the memory is cleared.

          • The Recheck switch will dim during a system check.


        • *5: Device Name List No. 2

          Tech Tips


          • Device Name List No. 2 displays some of the devices that make up the navigation system.

          • The names of the components from Device Name List No. 2 are shown in the following table.

            Name Component Connection Method
            MIC Microphone amplifier Vehicle wire harness
            AUX Stereo jack adapter Vehicle wire harness

      2. Unit Check Mode Screen

        A00DPXVE01
        Screen Description
        Display Content
        *1: Device name Target device
        *2: Past DTC Diagnostic memory results and stored DTCs are output.
        *3: Present DTC DTCs output in the service check are output.
        *4: DTC DTC (Diagnostic Trouble Code)
        *5: Timestamp The time and date of past DTCs are displayed (the year is displayed in 2-digit format)
        *6: Diagnosis clear switch

        Present and past DTCs and registered connected device names are cleared.

        Data is cleared by pressing the "Code CLR" switch for 3 seconds.

    3. Function Check/Setting Screen

      A00DTRSE01

      Tech Tips

      Some items may be grayed out or not displayed based on the device settings.


      1. Microphone&Voice Recognition Check Screen

        A00DQNNE01
        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.
        *4: Play switch Plays the recorded voice.
        *5: Recording indicator Comes on while recording.

        Tech Tips


        • The microphone is active at all times when this screen is displayed.

        • While recording or playing, the switches other than the stop switch cannot be pushed.

        • When no recording is present, the play switch cannot be pushed.

        • Recording will stop after 5 seconds or when the stop switch is pushed.

      2. GPS Information Screen

        A00DR47E01

        • *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.


        • *2: Receiving condition

          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.

        • *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.

        • *4: Position information

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

        • *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

        A00DQ82E01
        Vehicle Signal
        Display Content
        *1: SPD SPD signal condition is displayed.
        Sensor Signal
        Display Content
        *2: Gyro sensor

        Gyro sensor output condition is displayed.

        1.2 to 1.8 V

        Tech Tips

        The signals from the vehicle sensors are updated once per second and if any have changed, the screen is updated.

      4. Vehicle Signal Check Mode Screen

        A00DSZFE02
        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.

        Tech Tips


        • Only items sending vehicle signals will be displayed.

        • The input signals from the vehicle are updated once per second and if any have changed, the screen is updated.