How to Answer Client Questions About
Navigation CoveragePrecaution on Client Sneak Previews
Is my address covered by the navigation system?
Is my city covered by the navigation system?
The gas station on my corner is now a restaurant. Why
is it still incorrect in the navigation system?
FAQsWhy are some features different or missing compared
to my previous Honda vehicle?
23-97
Some clients may ask questions regarding a city,
address or POI (point of interest) covered by the
navigation system. It is better to verify a coverage
question on an actual vehicle than to disappoint your
client by promising coverage that may be incomplete or
missing in their area. The following suggestions can be
used to answer coverage inquiries from your client.
Using a current production vehicle (of the same model),
enter the client’s address (street first) to see if their area
is covered. Always enter the street first, because
sometimes their city may be included in a neighboring
township, or under some lager metropolitan city name.
If the address is shown in a later year vehicle, but not
your client’s vehicle, you might want to recommend
that your client purchase an update.
For general questions about whether a city is covered,
view the map coverage link on the DVD order site. On
the site, you enter a year and model, and then click on
the Coverage link. You then select a state or province,
and the cities are listed. Of course, this does not
guarantee that the client’s road or address is in the
system. Verifying on an actual production vehicle is
always the best guarantee that your information is
accurate.
For POI-related client questions, explain that
businesses are constantly moving, and there can be a
considerable lag in updating the m
illions of POIs in the
system. The database is updated annually, and the best
way to the verify whether the POI is accurate is verify
the inquiry on a current production vehicle.
Answers to these and other questions regarding
coverage can be found in these locations:
In the Frequently Asked Questions section of the navigation system manual.
At the on-line DVD order site, by clicking on the link (see ORDERING A DVD). Your client might request a look (or sneak preview) at
features in the latest navigation software. You should
never preview a navigation DVD in a client vehicle.
Inserting a newer DVD installs the latest software from
the DVD into the memory of the client’s navigation
system. When the original DVD is reinstalled, the newer
software remains in memory and is often incompatible
with the client’s original DVD Map and POI database, or
software.
If wishes to see the latest navigation coverage or
software features, demonstrate it on an in-stock vehicle
that already has the latest DVD version.
If, by chance, a newer version is loaded accidentally,
either by the dealer or the client, the only remedy is to
enter the navigation diagnostic mode’s Version screen
and do a forced download. Check any official Honda
service website for more information about what
patches may need reinstalling.
Hardware and software continually go through updates
and improvements. Features may change or disappear
over time based on the navigation system development.
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Symptom Diagnostic procedure Also check for
23-98
Navigation System
Symptom Troubleshooting Index
Navigation system stays on the
GPS initialization screen
Symptom Troubleshooting
(see page 23-92) Navigation unit
GPS antenna/cable is disconnected or
damaged
The wrong color DVD is installed
The DVD is damaged or dirty
Harness/fuses/switches
Vehicle position icon constantly
leaves road, moves erratically, or
is displayed very far from actual
vehicle position Symptom Troubleshooting
(see page 23-126)
Navigation unit
GPS antenna/cable
PCM (speed and fuel pulses)
Harness/fuses/switches
System always comes up in in-
line diagnostic mode Symptom Troubleshooting
(see page 23-127)
Navigation system will not accept
security code Symptom Troubleshooting
(see page 23-134)Wrong color DVD
Navigation frequently asks for
anti-theft code and/or needs GPS
initialization Symptom Troubleshooting
(see page 23-131)
Loss of voltage or poor ground (G504,
G505)
Navigation unit
Low battery voltage
Harness/fuses/switches
GPS icon is white or not shown Symptom Troubleshooting (see page 23-122) Navigation unit
Aftermarket accessories connected to
the system
The wrong color DVD is installed
The DVD is damaged or dirty
GPS antenna/cable
Harness/fuses/switches
Vehicle icon wanders across the
map when driving (does not
follow a displayed road) or map or
vehicle ICON spins Symptom Troubleshooting
(see page 23-126)
Navigation unit
GPS antenna/cable
ECM/PCM (speed signal)
No picture is displayed Symptom Tr oubleshooting
(see page 23-119) Navigation unit
The wrong color DVD is installed
The DVD is damaged or dirty
Harness/fuses/switches
Picture has lines/rolls/other issues
or is an odd color Symptom Troubleshooting
(see page 23-120) Navigation unit
The wrong color DVD is installed
The DVD is damaged or dirty
Aftermarket accessories connected to
the system
Harness/fuses/switches
Display day/night mode does not
work or does not work properly If you use the display mode
button, the auto day/night
function is disabled until you
turn the ignition switch to ON
(II)
Symptom Troubleshooting
(see page 23-128)Display brightness set to High in day
or night mode
Gauge control module
The wrong color DVD is installed
The DVD is damaged or dirty
Harness/fuses/switches
System locks up or freezes
constantly Symptom Troubleshooting
(see page 23-128) Navigation unit
The wrong color DVD is installed
The DVD is damaged or dirty
Harness/fuses/switches
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SymptomDiagnostic procedure Also check for
23-99
Voice guidance cannot be heard,
is broken up, or there is static
Symptom Troubleshooting
(see page 23-122) Volume or voice feedback setting (see
Owner’s manual)
Navigation unit
Harness/fuses/switches
Voice control does not work/
respond Symptom Troubleshooting
(see page 23-123) Navigation unit
The wrong color DVD is installed
The DVD is damaged or dirty
Microphone harness/switches
Navigation cannot control HVAC
by voice command Symptom Troubleshooting
(see page 23-130) Wrong color DVD is installed
Harness/fuses/switches
Wrong navigation unit (model code)
Navigation cannot control XM
radio Symptom Troubleshooting
(see page 23-130)Low or weak battery
Navigation cannot control audio
system Symptom Troubleshooting
(see page 23-129)Wrong color DVD
Navigation display buttons do not
work or respond properly Symptom Troubleshooting
(see page 23-121) Navigation unit
Open/short between the XM receiver
or the GA-Net bus
The wrong color DVD is installed
The DVD is damaged or dirty
Today’s Destinations button is
dim and not selectable in the
Enter destination by screen
(grayed-out) The client has not entered a group
of locations for Today’s
Destinations. This is normal. The
button is only selectable if the
client is using this functionSee Owner’s Manual
Some set-up and information
functions of the navigation
system are grayed-out and do not
work Client did not select OK from
Disclaimer screen. Refer to
System Function Diagram
(see page 23-111)
Previous Destinations button is
dim and not selectable in the
Enter destination by screen
(grayed-out) The vehicle may be new, or the
client deleted the destination.
Enter a destination, and allow the
system to route to it. After the trip,
the Previous Destinations button
will be selectable
Address cannot be found or
system gives poor routing Verify proper operation and
system limitations using the
owner’s manual
See Answering customer
question Navigation coverage
in general troubleshooting
Refer to Database limitation in
the navigation system manual
to report database errorsDatabase limitations (address not in
database)
Wrong color DVD installed
OPEN/CLOSE function of the
display does not work Symptom Troubleshooting
(see page 23-132) Navigation unit
Harness
Navigation display will not close Symptom Troubleshooting (see page 23-133) Navigation unit
Harness
Navigation display does not open
or opens part way Symptom Troubleshooting
(see page 23-133) Navigation unit
Harness
PC card will not play/card icon on
audio screen cannot be selected Symptom Troubleshooting
(see page 23-67)Navigation unit
(cont’d)
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SymptomDiagnostic procedure Also check for
23-100Navigation System
Symptom Troubleshooting Index (cont’d)
Navigation display stays on with
ignition switch in LOCK (0)
Symptom Troubleshooting
(see page 23-129) Harness/fuses/switches
Aftermarket accessory connected to
the system
DVD read error messages Symptom Troubleshooting (see page 23-127) Navigation unit
Wrong color DVD installed
Damaged DVD
Navigation system will not go
beyond the disclaimer screen and
displays the OK button See navigation display buttons do
not work or respond properly
Wrong color DVD installed
Scratched or damaged DVD
Navigation unit
The navigation anti-theft code
card is lost or missing See anti-theft feature (see page
23-90)
The vehicle icon lags behind
when the vehicle turns See self-inertial navigation
limitations (see page 23-90) Aftermarket accessories connected to
the system
GPS antenna/cable
Navigation screen is darker than
normal or takes time to brighten
when it is cold See LCD display unit limitations
(see page 23-91)
The navigation clock is off by 1 to
3 hours after replacing the
navigation unit See service precautions (see page
23-92)
Perform map matching (see page
23-94)
GPS antenna/cable
Check and adjust the clock settings
A new navigation DVD is needed See obtaining a navigation DVD (see page 23-94)
Time is not correct Reset Time Adjustment in set-up The wrong colored DVD or version is installed
The DVD is scratched or dirty See ‘‘DVD Handling and Cleaning’’ (see page 23-95)Navigation unit
The wrong DVD was installed and
now the system does not function
properly See Precaution customer Sneak
Previews (see page 23-97)
Install the correct version DVD
Check any official Honda service
website for more service information
about the navigation system
A specific city cannot be found See How to answer client questions about navigation
coverage (see page 23-97) The DVD is scratched or dirty
Refer to Database limitation in the
navigation system manual to report
database errors
The Honda Globe Screen (not the
Acura Globe Screen) appears
every time the vehicle is started Symptom Troubleshooting
(see page 23-135)
Also see the symptom The wrong DVD
was installed and now the system does
not function properly
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Overview
23-101
System Description
The navigation system is a highly sophisticated, hybrid locating system.
The navigation unit uses global positioning system (GPS) satellite signals, internal yaw and vehicle speed inputs, and
a map database to show where the vehicle is and to help guide you to a desired destination.
The navigation unit’s GPS receiver receives signals from the GPS, a network of 24 satellites in orbit ar ound the earth.
By receiving signals from several of these satellites, the navigation system can determine the latitude, l ongitude, and
elevation of the vehicle.
Signals from the system’s yaw rate sensor (inside the navigation unit) detects turns, and the ECM/PCM vehicle speed
pulse (VSP) and reverse signal enable the system to keep track of the vehicle’s speed and direction of travel. The
advantage of this hybrid system is that the system can track your position if either the GPS signal or the vehicle speed
signal is missing. For instance, when in a tunnel (no GPS), the speed signal is used to update your position on the map.
Alternately, while the vehicle is being transported on a ferry, GPS signals can show the vehicle position on the map as
it crosses the water.
The navigation system uses the location, direction, and speed information to display the appropriate map and
calculate a route to the destination entered. As you drive to a destination, the system provides both visual and audio
guidance. Audio guidance is sent to the audio unit, and an RGB graphics color signal is sent to the navigation display.
This navigation system also has voice recognition that allows voice control of most of the navigation, and audio
functions. The voice control switches (navigation TALK and navigation BACK buttons on the steering wheel) activate
the voice control system. The microphone on the ce iling receives your voice commands. For more information on this
feature, consult the navigation owner’s guide.
The illumination signal is used by the navigation unit to automatically switch the display mode between the Night and
Day display modes. When the headlights are on, the dash brightness control setting full brightness overrides the Night
display mode, and allows a daytime navigation display with the lights on.
When the navigation system is giving voice guidance commands, the front speakers are muted. When the voice
control system is being used (navigation TALK button pressed), all of the speakers are muted.
The internal GA-Net II bus passes information back and forth between the navigation display, the navigation unit, and
the audio system components. The information passed on this bus are touch button commands, audio muting signal,
audio (radio and XM), and any open in these bus lines can affect the navigation system or other audio accessory
operation.
The clock on the navigation display is set and maintained by the navigation unit. The time is automatically adjusted for
daylight savings, and time zone changes while driving. The time can be adjusted in setup.
Additional information is available about the navigation components following the System Diagram. A glossary of
terms that are used throughout this section follows the detailed information.
The Navigation System Manual in the glove box covers all of the system functions and settings. Use this as a resource
when evaluating a client concern.
(cont’d)
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Î
23-102Navigation System
System Description (cont’d)
Reverse signal
GPS antenna
AM/FM antenna Speakers
Navigation unit
Navi DVD
Navigation/Audio Display Screen
CLOCK
(Set by GPS)
Stereo Amplifier
(Premium sound
system)
Color
signal
Accessory
(MusicLink,
CD changer, etc.)
XM Receiver
XM antenna
(satellite &
terrestrial)
Auxiliary jack
assembly
Audio remote
switches
(steering wheel)
Illumination
Signal
(lighted buttons)
AM/FM
receiverCD Player
(CD, MP3, WMA)
Audio
processor
PC Card Slot (for playing audio
MP3, and WMA audio files) Navi
processor
(ECU)
GPS
receiver
Yaw rate sensor
(senses turning)
DVD player
(navi maps)
GA-Net
Audio
Audio
Section
Navigaion
Section
Illumination
(Night/Day
display mode)
ECM/PCM
(vehicle speed pulses) Microphone
(on ceiling) TALK/BACK
voice buttons
(’08 model) Climate control unit
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Î
Î
µµ
Navigation Function
Function Diagram
Vehicle Speed Pulse
23-103
STEERING BUTTONS MICROPHONE
GA Net bus AUDIO UNIT
LCD
SWITCH
Destination
DVD ROM
YAW RATE SENSOR GPS tuning
GPS RECEIVER
NAVIGATION UNIT
XM RECEIVER GPS ANTENNA Reception of radio
wave from satellite
Data pcocess
concerning map
and vehivle position
Perception of
vehicle position
ECM/PCM
(VEHICLE SPEED PULSE)
Detection of
travel distansce Detection of
vehicle position
Detection of
direction change
Correction of
map matching
Map scroll
Change of reduced
scale of map Guide
processing Audio
guidance
NAVIGATION
DISPLAY
VOICE
PROMPTS
Sensor power
NAVIGATION UNIT
ECM/PCM DISTANCE
DETECTION
CIRCUIT
The navigation system is composed of the navigation unit, the ECM/PCM (vehicle speed signal), the GPS antenna, the
microphone, the voice control switch, the XM receiver, and the climate control unit.
These units communicate with each other on the GA-Net bus.
The vehicle speed pulse is sent by the ECM/PCM. The ECM/PCM receives a signal from the countershaft speed sensor,
then it processes the signal, and transmits it to the speedometer and other systems.
(cont’d)
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ÎGA-Net Bus Configuration
23-104Navigation System
System Description (cont’d)
Navigation unit
XM Receiver Accessory
(Music Link, CD changer etc.)
The GA-Net bus passes audio and navigation commands throughout the navigation and audio components.
These commands include audio/XM selections by voice, and XM station and music title names. Because the entire bus
is daisy chained between components (see diagram below), any open or short in the GA-Net bus harness will cause
any or all of these functions to become inoperative. The addition of any factory audio accessory must maintain the
continuity of the GA-Net bus by installing the Y cable included with the accessory kit.
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