Part 1
Navigation System Description
Overview
The navigation system is a highly-sophisticated, hybrid locating system that uses satellites and a map database to show you where you are and to help guide you to a desired destination.
The navigation system receives signals from the global positioning system (GPS), a network of 24 satellites in orbit around the earth. By receiving signals from several of these satellites, the navigation system can determine the latitude, longitude, and elevation of the vehicle. In addition, signals from the system's yaw rate sensor and the PCM (vehicle speed pulse) enable the system to keep track of the vehicle's direction and speed of travel.
This hybrid system has advantages over a system that is either entirely self-contained or one that relies totally on the GPS. For example, the self-contained portion of the system can keep track of vehicle position even when satellite signals cannot be received. When the navigation system is on, the GPS can keep track of the vehicle position even when the vehicle is transported by ferry.
The navigation system applies all location, direction, and speed information to maps and calculates a route to the destination entered. As you drive to that destination, the system provides both visual and audio guidance.
The navigation system also uses dynamic route guidance to help avoid traffic delays and incidents. Clients need to subscribe to real-time traffic for this function to work.
This navigation system also has voice recognition that allows voice control of most of the navigation functions. The TALK and BACK buttons on the steering wheel activate the voice control. The voice control also allows control of the audio and climate functions.
The illumination signal (headlights ON) is used by the audio-navigation unit to automatically switch the display between Night and Day brightness modes. When the gauge control module brightness control is set to full brightness, the navigation system stays in the day mode, even with the headlights on.
The GA-Net II communication bus passes information back and forth between the navigation display, the audio-navigation unit, the AcuraLink control unit (XM receiver), and the audio system. The information passed on this bus is audio settings directed by the audio-navigation unit.
The Comm. Bus connects the HFL, the XM (HIP) (AcuraLink), and the audio-navigation units. This bus supports these functions:
- The audio-navigation unit receives traffic, weather, and AcuraLink message information from the AcuraLink control unit (XM receiver).
- If a POI phone number is available, the audio-navigation unit sends the phone number (on the Calculate route to screen) to the HandsFreeLink control unit for dialing.
- If vehicle problems are detected, and the client's cellular contract includes data service (the vehicle must also have an approved blue tooth phone paired and configured correctly), then the AcuraLink control unit (XM receiver) can send vehicle data to the HandsFreeLink control unit for transmitting back to the AcuraLink servers.
- The AcuraLink server can pass additional problem details back through the HandsFreeLink control unit, to the AcuraLink control unit (XM receiver), and finally to the audio-navigation unit for display.
HDD Navigation System
The Acura ZDX uses a hard disc drive (HDD) instead of a navigation DVD. The HDD system improves route calculation and POI searching time, as well as these additional functions:
- Ripping music to the HDD with on-board CD database (CDDB) information provided by Gracenote.
- Clients can save their personal pictures to the HDD and use the images as wallpaper when they are not using the navigation system.
- See the Owner's Manual or the Navigation Manual for more information.
There are two software programs that run on the audio-navigation system:
- Navigation system software - This software comes pre-loaded on the HDD and runs the navigation system. It can be updated when a client orders a navigation update disc, or as directed by any official Acura service information like a service bulletin.
- Map software - This is commonly referred to as update navigation DVD that clients can order to update their map info, POI DB, and CDDB information. This also comes pre-loaded on the HDD, but the client can choose to update it yearly.
When you order a reman HDD, the latest navigation system software is loaded on the HDD, along with the latest Map software that the client had installed on their HDD.
If a client wants to order an update, see Ordering an Update Navigation DVD.
The Gracenote CDDB is updated quarterly. Clients can visit www.acura.com and download the latest update.
The HDD shuts down to protect itself from damage, if the audio-navigation unit internal temperature is 183 °F (84 °C) or higher.
Warning of extreme temperatures in the audio-navigation unit is displayed on the navigation screen as an error message.
USB Adapter
The USB module is built into the audio-navigation unit. Clients can load images (which can be used as wallpaper), music, and the CDDB. Not all USB devices and devices functions work with the USB adapter. Please see the Owner's Manual for more information.
Multi-View Rear Camera System
Overview
The multi-view rear camera system is a functionality that provides three different view images of the rearview camera to the navigation display unit, and can be changed by user operation. The guiding lines are different according to the view mode difference. The rearview camera is connected directly to the navigation display instead of the audio-navigation unit to improve the time for the rearview image to appear on the display.
- Normal View Mode
The display shows the basic view.
- Wide View Mode
The display shows wider visibility than the normal view, which helps the driver confirm any objects approaching from right and left.
- Top Down View Mode
The display shows the view from the top angle of the vehicle, which helps the driver confirm the distance from any object behind.
When the vehicle is in R position, the rearview camera image automatically appears on the navigation display. You can change the display while the vehicle is in R position by pressing the interface dial.
ENTER:
The rearview camera image changes between the wide view, the normal view, and the top down view in this order.
CANCEL button:
Pressing and holding the CANCEL button for three seconds turns the guide lines on and off.
INTERFACE DIAL:
You can change the rearview camera image brightness by rotating the interface dial. The brightness adjustment is not affected by the screen brightness adjustment in Setup.
Basic Control
When the navigation display detects the BACK UP LIGHT signal (when the vehicle is in R position) for at least 0.5 seconds, the navigation display turns on the rearview camera. The navigation display delays for the 0.5 seconds to prevent changing the screen image too frequently because of incorrect shift lever selection.
Changing Camera Views
1. When the rearview camera image is displayed, pressing the interface dial in (ENTER) sends a signal from the audio-navigation unit, to the navigation display unit using the GA-Net BUS to change the camera angle view.
2. The navigation display unit recognizes the signal, and sends a signal to the rearview camera using the CAMERA BIT0 and CAMERA BIT1 signal lines to change the rearview camera view.
3. The rearview camera takes the digital video using the input signal, then sends the rearview image to the navigation display unit using the NTSC lines. The rearview image appears on the navigation display unit.
View Mode Memorization
Any time the audio-navigation unit loses power (battery disconnected, navigation unit disconnected, etc.) the rearview camera defaults to the normal angle view. The rearview camera will also default to this angle if you had the top down angle selected when you turned the ignition switch to LOCK (0) or pressed the engine start/stop button to select the OFF mode. If you change the rearview camera to the wide angle view, the camera will remember this view when you turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode.