Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NAVIGATION / MULTI INFO DISPLAY
NAVIGATION SYSTEM - SYSTEM DESCRIPTION
| NAVIGATION SYSTEM OUTLINE |
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)
| Operation | Description |
| Vehicle Position Calculation | The multi-media module receiver assembly calculates the current vehicle position (direction and current position) using the direction deviation signal from the gyro sensor and driving distance signal from the vehicle speed sensor and creates the driving route. |
| Map Display Processing | The multi-media module receiver assembly processes the vehicle position data, vehicle driving track and map data from the hard disc. |
| Map Matching | The map data from the hard disc is compared to the vehicle position and driving 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 GPS measurement position data is compared with the vehicle position and driving track data. If the position is very different, the GPS measurement position is used. |
| Distance Correction | The vehicle speed signal includes error caused by tire wear and slippage between the tires and road surface. Distance correction is performed to account for this. The multi-media module receiver assembly automatically offsets the signal to make up for the difference between the distance signal and distance data of the map. The offset is automatically updated. |
- 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 multi-media module receiver assembly and the vehicle speed signal.
Gyro sensor
Used to calculate the direction by detecting angular velocity. It is located in the multi-media module receiver assembly.
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.
| Number of Satellites | Measurement | Description |
| 2 or less | Measurement is impossible | Vehicle position cannot be obtained because the number of satellites is not enough. |
| 3 | 2-dimensional measurement is possible | 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 | Vehicle position is obtained based on the current longitude, latitude and altitude. |
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 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 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.
| DVD (Digital Versatile Disc) PLAYER OUTLINE |
The DVD player can only play DVD videos that have any of the following marks:
The following products may not be playable on your player.
Precaution for use of discs
- NOTICE:
| "Bluetooth" OUTLINE |
| *a | Multi-media Module Receiver Assembly (Built-in "Bluetooth" receiver antenna) | *b | Portable Audio Player ("Bluetooth" compatible type) |
| *c | Cellular Phone ("Bluetooth" compatible type) | *d | Cellular Tower |
"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
The "Bluetooth" built-in multi-media module receiver assembly and a "Bluetooth" compatible cellular phone* 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.
*: Some versions of "Bluetooth" compatible cellular phones may not function.
Compatible hands-free devices
| Required "Bluetooth" specifications | Ver. 1.1 or higher (Ver. 2.1+EDR or higher recommended) |
| Compatible profiles | HFP (Hands Free Profile) Ver.1.0 or higher (Ver.1.5 or higher 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 DUN (Dial-Up Networking Profile) Ver.1.1 or higher*3 |
| Maximum number of hands-free devices that can be registered (including audio devices) | 5 |
- HINT:
- The amount of remaining battery charge displayed on the multi-media module receiver assembly may be different from that of the "Bluetooth" device.
| CONNECTED SERVICES OUTLINE (w/ Connected Services) |
The following services are available by connecting the navigation system to Toyota's portal site via the internet using a cellular phone.
- HINT:
Failure to do so may cause problems such as the search engine cannot be selected and the screen does not transfer to the next screen even when "Online search" is selected.
| EXPORT / IMPORT MEMORY POINT FUNCTION OUTLINE |
This function allows memory points stored in the multi-media module receiver assembly to be registered to another multi-media module receiver assembly.
Memory points stored in the multi-media module receiver assembly can be exported to a USB device.
Data exported to a USB device can be imported to another multi-media module receiver assembly using a USB device.
| RDS-TMC FUNCTION OUTLINE (w/ RDS-TMC Function) |
This system has a function which allows the reception of traffic information from Radio Data System Traffic Message Channel (RDS-TMC) stations based on FM-multiple broadcasting.
It assists the driver to avoid areas with traffic congestion. It also helps to improve traffic flow and road safety.
RDS-TMC Function List
Using RDS-TMC station based on FM-multiple broadcasting or TPEG information* that is received, traffic events near the current position or the cursor position can be viewed as a list.
Using TPEG information that is received, traffic prediction information relevant to the area around the current position or the cursor position can be viewed.
Using TPEG information that is received, the location available spaces of a parking lot can be checked. The parking lot can also be set as a destination.
- HINT:
- The following is information regarding the RDS-TMC function that utilizes TPEG information:
| VEHICLE CUSTOMIZATION OUTLINE |
Customization of functions can be performed on the multi-display screen. Refer to the owner's manual for further information on customizable items for the navigation system.
- HINT:
| COMMUNICATION SYSTEM |
MOST Network Outline
Navigation system components communicate with each other via the MOST network.
The MOST network uses a shielded twisted pair of wires for its communication lines.
The master unit of the MOST network is the multi-media module receiver assembly.
MOST communication lines connect each slave unit centering around the master unit to form a MOST network ring.
The master unit sends a wake-up signal to activate each slave unit connected to the MOST network.
- HINT:
- If a short or open circuit occurs in the MOST circuit, communication will be interrupted and the system will not operate normally.
AVC-LAN Outline
Components of the navigation system communicate with each other via the AVC-LAN.
The AVC-LAN uses a twisted pair of wires for its communication lines.
The master unit of the AVC-LAN is the multi-media module receiver assembly.
- HINT:
| DIAGNOSTIC FUNCTION OUTLINE |
The navigation system has a diagnostic function (the result will be displayed on the master unit or the intelligent tester).