NAVIGATION SYSTEM (for DVD) 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)

        A00JXDAE02
        Operation Description
        Vehicle Position Calculation The display and navigation module display calculates the current vehicle position (direction and current position) using the direction deviation signal from the gyro sensor and the running distance signal from the vehicle speed sensor and creates the driving route.
        Map Display Processing The display and navigation module display processes the vehicle position data, vehicle running track and map data from the map disc.
        Map Matching The map data from the map disc 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 using GPS. Then, the GPS measurement position data is compared with the vehicle position and running track data. If the position is widely 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 display and navigation module display 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 decrease.

        A00JZ3DE02

    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 display and navigation module display.

      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.

      A00JU2NE02
      Text in Illustration
      *a Current longitude/latitude/altitude is determined using the radio wave arrival time from 4 satellites. *b GPS
      Number of Satellites Measurement Description
      2 or less Measurement is impossible The vehicle position cannot be obtained because the number of satellites is insufficient.
      3 2-dimensional measurement is possible The vehicle position is obtained based on the 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 the 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 on the map disc and the vehicle position is set onto the most appropriate road.

      A00JV3QE03

  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.

      A00JUOKE01

  3. DVD (Digital Versatile Disc) PLAYER OUTLINE (Navigation Map)


    1. The navigation module board uses a laser pickup to read the digital signals recorded on a DVD.

      CAUTION:

      Because the navigation system uses an invisible laser beam, do not look directly at the laser pickup. Be sure to only operate the navigation system as instructed.

      Note


      • Do not disassemble any part of the navigation module board.

      • Do not apply oil to the navigation module board.

      • Do not insert anything but a DVD into the navigation module board.

  4. DVD (DIGITAL VERSATILE DISC) PLAYER OUTLINE


    1. The DVD player can only play DVD videos, DVD audio and video CDs that have any of the following marks:

      A00K299

      1. Precaution for use of discs

        Note


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

        • Keep the discs away from dirt. Be careful not to damage the discs or leave fingerprints on them.

        • Hold discs by the outer edge and center hole with the label side up.

        • 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.

        • Do not use odd-shaped CDs because these may cause player malfunctions.

        • Do not use discs whose recording portion is transparent or translucent because they may not be able to be inserted, ejected or played normally.

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

    2. Cleaning

      Note

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


      1. A00JW52

        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.

        Note


        • Pressing on the disc by hand or rubbing the disc with a hard cloth may scratch the disc surface.

        • The use of solvents, such as record spray, antistatic agents, alcohol, benzine and thinner, or a chemical cloth may cause damage to the disc, making the disc unusable.

  5. CD (COMPACT DISC) PLAYER OUTLINE


    1. 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 other content.

      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.

      Note


      • Do not disassemble any part of the CD player.

      • Do not apply oil to the CD player.

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

    2. 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:

        A00JYF3

    3. Precautions for use of discs

      Note


      • Copy-protected CDs cannot be played.

      • CD-Rs and CD-RWs may not be able to 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.

      • Unfinalized CD-Rs and CD-RWs cannot be played.

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

      • Keep the discs away from dirt. Be careful not to damage the discs or leave fingerprints on them.

      • Hold discs by the outer edge and center hole with the label side up.

      • 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.

      • If discs have adhesive tape, stickers, CD labels or any traces of such labels attached, the discs may not be able to be ejected or player malfunctions may result.

      • Keep the discs away from direct sunlight. (exposure to direct sunlight may cause deformation of the disc, making the disc unusable).

      • Do not use odd-shaped CDs because these may cause player malfunctions.

      • Do not use discs whose recorded portion is transparent or translucent because they may be unable to be properly inserted, ejected or played.

      Tech Tips


      • 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.

      • The CD may skip if the player experiences strong vibrations when the vehicle is driven on rough roads or similar uneven surfaces.

    4. A00JW52

      Cleaning

      Note

      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.

        Note


        • Pressing on the disc by hand or rubbing the disc with a hard cloth may scratch the disc surface.

        • The use of solvents, such as record spray, antistatic agents, alcohol, benzine and thinner, or a chemical cloth may cause damage to the disc, making the disc unusable.

  6. MP3/WMA OUTLINE


    1. Playable MP3 file standards

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

      • MPEG1 LAYER3: 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, 144, 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 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 do not play.

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

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

        • Keep CD-Rs and CD-RWs in an opaque case.

    5. Usable media format


      1. Usable media format

        Disc format CD-ROM Mode 1, CD-ROM XA Mode 2 Form 1
        File format ISO 9660 Level 1 and Level 2 (Joliet, Romeo)

        Tech Tips


        • 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.

        • 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 number of directory levels 8 levels
        Maximum number of characters for 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 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.

  7. "BLUETOOTH" OUTLINE

    A00JVA6E01
    Text in Illustration
    *a Radio Receiver Assembly ("Bluetooth" Receiver Antenna Built-in) *b "Bluetooth" Compatible Portable Audio Player
    *c "Bluetooth" Compatible Cellular Phone *d Cellular Tower

    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" function built into the radio 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.

    4. "Bluetooth" audio function


      1. The "Bluetooth" function built into the radio 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 radio receiver assembly.

        *: Some versions of "Bluetooth" compatible audio players may not be able to operate using the "Bluetooth" function, or music may play, but functions available using the radio receiver assembly may be limited.

      2. Compatible "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 or higher

        • 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 radio receiver assembly may be different from that of the portable player.

  8. RADIO DESCRIPTION


    1. Radio frequency band


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

        A00JZYKE12
    2. A00K1CAE08
      Text in Illustration
      *a FM (Stereo)
      *b FM (Monaural)
      *c 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. A00JZMXE12
        Text in Illustration
        *a Phasing
        *b 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. A00K14AE12
        Text in Illustration
        *a 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. A00K169E11
        Text in Illustration
        *a 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 specified area Foreign noise
      AM Noise occurs when listening to intermittent broadcast Identical program transmitted from multiple towers can cause noise where signals overlap
      AM Noise occurs only at night Beats from distant broadcast
      FM Noise occurs while driving in specified area Multipath or phasing noise resulting from change in FM frequency

      Tech Tips

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

  9. 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 for ASL control.

  10. COMMUNICATION SYSTEM


    1. MOST Network Outline

      A00JWFLE01

      1. Navigation system components communicate with each other via the MOST network.

      2. The MOST network uses a shielded twisted pair of wires for its communication lines.

      3. The master unit of the MOST network is the navigation ECU (display and navigation module display).

      4. MOST communication lines connect each slave unit centering around the master unit to form a MOST network ring.

      5. The master unit sends a wake-up signal to activate each slave unit connected to the MOST network.

        Tech Tips

        If a short or open circuit occurs in the MOST circuit, communication is interrupted and the system does not operate normally.

    2. AVC-LAN OUTLINE

      A00K20JE01

      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 display and navigation module display.

        Tech Tips


        • The display and navigation module display has enough resistance (60 to 80 Ω) necessary for communication.

        • If a short or open circuit occurs in the AVC-LAN circuit, communication is interrupted and system does not operate normally.

  11. DIAGNOSTIC FUNCTION OUTLINE


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

  12. DIAGNOSIS DISPLAY DETAILED DESCRIPTION

    Tech Tips


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

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


    1. Service Menu Screen

      A00K0J3E01

      Tech Tips

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

    2. Failure Diagnosis Screen

      A00JX10E01

      Tech Tips

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


      1. System Check Mode Screen

        A00K07UE03

        • *1: The node position number for devices connected to the MOST network.

          Tech Tips

          MOST node position numbers are provided for devices connected to the MOST network.


        • *2: 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
            EMVN Display and navigation module display -
            AMP Stereo component amplifier assembly Communication line for MOST network
            AUDIO Radio receiver assembly Communication line for MOST network
            RSE Television display assembly Communication line for MOST network
            CAMERA-C Parking assist ECU Communication line for AVC-LAN
            USB BOX Multi-media interface ECU Communication line for AVC-LAN

        • *3: Check Result

          Tech Tips

          Result codes for all devices are displayed.

          Result Meaning Action
          OK Device does not respond with DTC -
          MOST MOST communication error Perform "MOST Line Check" to check connection of each device on MOST network
          EXCH Device responds with replace-type DTC Look up DTC in "Unit Check Mode" and replace device
          CHEK Device responds with check-type DTC Look up DTC in "Unit Check Mode"
          NCON Device was previously present, but does not respond in diagnostic mode

          - Check power supply wire harness of device

          - Check AVC-LAN of device
          NRES Device responds in diagnostic mode, but gives no DTC information

          - Check power supply wire harness of device

          - Check AVC-LAN of device

        • *4: 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.


        • *5: Recheck

          Tech Tips


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

          • The Recheck switch dims during a system check.


        • *6: 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
            VTR Video (video adaptor) terminal Vehicle wire harness
            MIC Telephone microphone assembly Vehicle wire harness
            AUX No. 1 stereo jack adapter assembly Vehicle wire harness

      2. Unit Check Mode Screen

        A00K0I4E03
        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 service check are output.
        *4: DTC DTC (Diagnostic Trouble Code)
        *5: Timestamp Time and date of past DTCs are displayed (year is displayed in 2-digit format)
        *6: Diagnosis clear switch Pushing this switch for 3 seconds clears diagnostic memory data of target device (responses to diagnostic system check result and displayed data are cleared)

      3. MOST Line Check Screen

        Tech Tips


        • The inspection is performed at the time the screen changes from "System Check Mode" to "MOST Line Check".

        • The master unit checks the connection of each device on the MOST network.

        A00JUMFE01

        • *1: The node position number for devices connected to the MOST network.

        • *2: Device Name List

          Tech Tips


          • Device Name List displays some of the devices that make up the navigation system.

          • The names of the components from Device Name List are shown in the following table.

            Name Component
            EMV-M Display and navigation module display
            AMP Stereo component amplifier assembly
            AUDIO Radio receiver assembly
            RSE Television display assembly

        • *3: Check Result

          Tech Tips


          • The master unit displays the check result on the screen based on the response information from each slave unit.

          • Result codes for all devices are displayed.

            Result Meaning
            OK There was response for connection check during MOST line check
            NCON There was no response for connection check during MOST line check

          • The device name and result will not be displayed if there is no system registration record and no response for the connection check during the MOST line check even if the device is connected to the MOST network.

    3. Function Check/Setting Screen

      A00JWTUE04

      Tech Tips

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


      1. Microphone&Voice Recognition Check Screen

        A00JUILE02
        Screen Description
        Display Content
        *1: Microphone input level meter Monitors microphone input level every 0.1 sec. and displays results in 8 different levels
        *2: Recording switch Starts recording
        *3: Stop switch Stops recording
        *4: Play switch Plays 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, switches other than the stop switch cannot be pushed.

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

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

      2. GPS Information Screen

        A00JYNUE02

        • *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

          Screen Description
          Display Content
          T System is receiving GPS signal, but is not using it for location
          P System is using GPS signal for location
          - System cannot receive 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 current position is displayed

        • *5: Date information

          Screen Description
          Display Content
          Date Date/time information obtained from GPS signal is displayed in Greenwich Mean Time (GMT)

      3. Vehicle Sensors Screen

        A00JWANE02
        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

        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

        A00K11ME01
        Screen Description
        Display Content
        Battery Battery voltage is displayed
        IG Ignition switch ON/OFF state is displayed
        PKB Parking brake 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 are displayed.

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