System Components
Touch Screen Display and Integrated Control Panel
| ITEM | DESCRIPTION |
|---|---|
| 1 | Touch Screen |
| 2 | Access Audio/Video Menu |
| 3 | Scroll up down (menu control) |
| 4 | Mode |
| 5 | Traffic/News information |
| 6 | Access Phone Menu |
| 7 | Search up/increase |
| 8 | Search down/increase |
| 9 | Access Navigation Menu |
| 10 | Tone hard key |
| 11 | Audio on/off |
| 12 | Volume |
| 13 | Access TS Home Menu |
The TS and Integrated Control Panel are located in the center of the instrument panel and are the driver's interface with the navigation system. The TS is connected to the MOST ring and communicates with the other components in the audio/infotainment system.
The screen processes its own video for system operation but receives the navigation graphics from the IAM (ROW) or the navigation computer (Japan/Asia).
The TS is a seven inch touch sensitive, 1280 X 480 pixels LCD (liquid crystal display) VGA screen.
In addition to the navigation system the TS and the ICP provides the driver with display and control of various other vehicle functions.
Integrated Audio Module (IAM)
The IAM is located in central position in the instrument panel, behind the Integrated Control Panel.
The IAM is a multi functional unit
For additional information, refer to: Audio System
The IAM is connected on the MOST ring to the other audio system components. The driver can control navigation functions by using soft keys on the TS or by voice commands.
The 40 GB hard drive is used for storing the information for satellite navigation (not applicable to Japan/Asia specification vehicles). A 10GB partition is provided for storing music files, the remaining 30GB is used for map data storage.
Hard Disc Drive
The integral hard drive for the navigation system (not applicable to Japan/Asia specification vehicles) removes the requirement of a separate navigation computer. The IAM stores the navigation map data locally within the 30GB hard drive partition. By storing the information in this way and processing it within the IAM, navigation display, route calculation speeds and accuracy are vastly improved. Map upgrades and software are loaded directly into the IAM from a Universal Serial Bus (USB) memory stick (not applicable to Japan/Asia specification vehicles).
The map images are transmitted from the IAM to the TS via a LVDS (Low Voltage Differential Signal) link cable. Turn by turn instructions are displayed in the instrument cluster using messages transmitted on the medium-speed CANbus.
The IAM communicates on the MOST ring with the rest of the audio system. If the IAM is replaced it must be configured as a new module using an approved diagnostic system.
Calibration of the IAM using an approved diagnostic system enables updates to be downloaded as new technology becomes available or any fault concerns require software updates.
Global Positioning System Antenna
The GPS antenna passes signals from the GPS satellites to the navigation computer for processing.
The GPS antenna is designed with 50 ohm output impedance. The IAM or navigation computer is fitted with 50 ohm fakra II connectors to ensure compatibility with the antenna. For optimum performance 50 ohm low loss coaxial cable is used between the antenna and IAM or navigation computer.
It is possible for the GPS antenna to lose the signal from the GPS satellites:
- In hilly or tree lined areas
- Built up areas with tall buildings
- In multi storey car parks
- In garages
- In tunnels
- On bridges
- During heavy rain or thunderstorms.
When the signal is lost the IAM or navigation computer will continue to give guidance using memory mapped data from the stored map software (or from the map DVD until the signal is restored.
Microphone
A single microphone is used for hands-free operation using the voice control system. The microphone has an integrated noise suppression system for hands-free use. The microphone is a standard directional type, hardwired to the IAM. When replacing the microphone extra care must be taken to make sure it is fitted into its securing clips for correct positioning and orientation.
TMC Antenna Amplifier
The TMC (traffic message channel) antenna amplifier is connected to the FM antenna. The TMC signals are received through the normal radio signals via the RDS (radio data system) and are routed separately from the radio signals via the TMC antenna amplifier to the Touch Screen Display unit.