Honda Ridgeline. Manual — part 527
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Symptom
Diagnostic procedure
Also check for
23-74
Navigation System
Symptom Troubleshooting Index (cont’d)
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Address cannot be found or system gives poor
routing
See ‘‘Answering client
questions about navigation
coverage’’ in general
troubleshooting
Verify proper operation and
system limitations using the
navigation system manual
The wrong colored DVD or
version is installed
Database limitations
(address not in database)
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
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 them. Enter a
destination, and allow the
system to route to it. After the
trip, the Previous Destinations
button will be selectable
See Owner’s Manual for more
details
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 function
Time is not correct
Reset Time Adjustment in set-
up
The wrong colored DVD or
version is installed
The map will not display the Southern portion
of the U.S. or the Northern parts of Canada
North American coverage is
different for U.S./Canada
markets. See the version
diagnostic screen (see page
23-133) for details on coverage
differences
The wrong colored DVD or
version is installed
The DVD is scratched or dirty
See ‘‘DVD Handling and
Cleaning’’ (see page 23-68)
Navigation unit
The wrong DVD was installed and now the
system does not function properly
See ‘‘Precaution client Sneak
Previews’’ (see page 23-70)
Install the correct version
DVD
Check on-line for service
bulletins or other service
information for the
navigation system
A POI cannot be found
See ‘‘How to answer client
questions about navigation
coverage’’ (see page 23-70)
The DVD is scratched or dirty
A specific city cannot be found
See ‘‘How to answer client
questions about navigation
coverage’’ (see page 23-70)
The DVD is scratched or dirty
An In Line Diagnosis screen appears every
time vehicle is started
See factory diagnostic screen
‘‘In Line Diag’’ (see page
23-110)
SJC8AN1J36100000000CAAT00
Overview
23-75
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 a driver to a desired destination.
The navigation unit’s GPS receiver receives signals from the 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.
Signals from the system’s yaw rate sensor (inside the navigation unit) detects turns, and the 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, audio, and
climate control functions. The voice control switches (TALK and BACK buttons on the steering wheel) activate the
voice control system. The microphone on the ceiling 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 used (TALK button pressed), all of the speakers are muted.
The 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 line can affect the navigation system operation.
The clock on the audio 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 Users Guide in the glove box covers all of the system functions and settings. Use this as a resource
when evaluating a customer concern.
(cont’d)
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System Diagram
23-76
Navigation System
System Description (cont’d)
CD CHANGER
XM RECEIVER
NAVI VOICE SIGNAL
MICROPHONE
REVERSE SIGNAL
GPS ANTENNA
AUDIO UNIT
DVD ROM
NAVIGATION UNIT
GPS
RECEIVER
YAW RATE
SENSOR
REARVIEW CAMERA
(OPTION)
GRAPHIC/
COLOR
SIGNAL
(RGB)
GA NET
ECU
BUS
CLIMATE
CONTROL UNIT
PC CARD SLOT
(Factry Use Only)
PCM
(VEHICLE SPEED
PLUSES) (VSP)
ILLUMINATION
(Day/Night Mode)
UART
CLIMATE BUS
B CAN
BUS
ILLUM.
CANCEL
NAVIGATION TALK&
BACK BUTTONS
GA NET
DISPLAY
BUS
SAT/LAND
ANTENNA
CLOCK
(set by navi)
AUDIO
GA NET
BUS
AUDIO
GA NET
BUS
CD
Open/Eject
ILLUM. for
BUTTONS
XM
AUDIO
AM/FM
ANTENNA
FRONT SPEAKER
NAVIGATION VOICE OUTPUT
NAVIGATION DISPLAY
UNIT
05
03
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Navigation Function
Function Diagram
Vehicle Speed Pulse
23-77
GA Net bus
AUDIO UNIT
MICROPHONE
XM RECEIVER
LCD
SWITCH
Destination
DVD ROM
GPS tuning
GPS RECEIVER
NAVIGATION UNIT
GPS ANTENNA
Reception of radio
wave from satellite
Data pcocess
concerning map
and vehivle position
Perception of
vehicle position
PCM
(VEHICLE SPEED
PULSE)
Detection of
travel distance
Detection of
vehicle position
Detection of
direction change
Correction of
map matching
Map scroll
Change of reduced
scale of map
Guide
processing
NAVIGATION
DISPLAY
VOICE
PROMPTS
YAW RATE
SENSOR
CD
CHANGER
Audio
guidance
STEERING
WHEEL
BUTTONS
DISTANCE
DETECTION
CIRCUIT
NAVIGATION UNIT
PCM
Sensor power
The navigation system is composed of the navigation unit, the PCM (vehicle speed signal), the GPS antenna,
microphone, voice control switch, audio unit, CD changer, XM receiver, climate control unit, and the navigation
display.
These units communicate with each other on the GA-Net bus.
The vehicle speed pulse is sent by the PCM. The 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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