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Audio Glossary
Item Definition
23-167
NOTE: All items may not apply to this vehicle. See the owner’s manual for more information.
Active noise cancellation The active noise cancellation system cancels some of the vehicle noise. This occurs in the 1,500 2,400 rpm range. Microphones detect the low frequency
sound, and the system outputs a canceling sound from the audio speaker.
AM (Amplitude Modulation)
Amplifier A device that increases the level of a signal by increasing the current or voltage.
Antenna A device used to send or receive electromagnetic waves thr ough the air.
ATA (PC Card) A type of card that has been tested for use in playing WMA, and MP3 music files in the PC Card slot. Sizes of up to 1 GB have been tested.
Audio remote switch The switches on the steering wheel that control the audio system.
Auxiliary jack Allows the customer to use a portable audio device to i nput audio recordings.
Balance A control that changes the relative volume of the left and right channels.
Band A range of frequencies between two definite limits. Bands are assigned by the Federal Communications Commission for specific uses.
Bass An adjustment for the low frequency sounds of around 160 Hz and below.
Byte A unit of storage for computer files and memory. A CD holds approximately 700 million bytes.
Cassette Audio or video magnetic tape container having two reels. Customers can insert it for play back
Compactflash Astandardforsmall-size(3x4cm),memorycardsusedinmobilecomputers, PDAs, digital cameras. Compact flash memory cards are available in size of
32 MB up to 4 GB or more and can be played in the audio PC slot. Sizes above
1 GB have not been tested.
CD (Compact Disc) A 4.5-inch plastic disc containing digital audio recording that is played optically on a laser equipped player. Never use discs with a paper label. In a hot vehicle,
labels can curl up and jam the unit.
CD (audio disc) changer CD player that can store and play more than one CD. Two types are available. Some units accept CDs fed into the changer one at a time, and others accept a
magazine (with CDs stacked in a container).
CD player A com ponent designed to play compact disc recordings using a laser optical
pickup. The signal from a CD player usually requires amplification.
Decibels (db)
Distortion Inexact repr oduction of an audio signal caused by playing music at levels the
audio system cannot handle.
Dolby (noise reduction) A processing system developed by Dolby Laboratories that reduces the background noise on recording media. The result is a cleaner playback from the
audio system.
DUET A serial data communication line used for sub display.
DVD (Digital Versatile Disc) A 4.5-inch CD-like format used for storing movies with digital audio and video features. The DVD-A format is a DVD format designed for DVD audio systems.
Some vehicles can play DVD and DVD-A formats.
Equalizer A device that changes the relative volume of individual frequency bands to suit personal tastes of the listener.
Fader The control that adjusts the relative volume levels of front and rear speakers in a four-speaker system.
Format To prepare a PC Card to receive files this function is done on a PC. Always choose either FAT or FAT32, as the NTFS format is not accepted by the system.
Pick the default sectors for the format method selected.
FM (Frequency Modulation) The form of modulation used for radio and television sound transmission in most of the world. Less prone to interference than AM. The FM broadcast band
in North America covers roughly 87.7 to 107.9 MHz.
(cont’d)
The type of transmission used in the standard radio broadcast band from 530 to 1710 kHz.
A method of measuring sound or radio signal strength received by the audio unit antenna.
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Radio preset memory is lost Volume does not change
YES
NO
YES
NO YES
NO
YES
NO
23-22123-221
NOTE: If only the XM stations are lost, go to XM radio
preset memory is lost (see page 23-248).
1. Set each of the radio station preset buttons.
Go to step 2.
With navigation: Replace the navigation unit (see page 23-355).
Without navigation: Replace the audio unit (see page 23-256).
2. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
3. Test the preset buttons for proper recall operation.
System is normal at this time. Check the
connections at the navigation unit or audio unit.
With navigation: Replace the navigation unit (see page 23-355).
Without navigation: Replace the audio unit (see page 23-256). NOTE:
Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
Set the fader and balance positions to the center.
1. Listen for sound from the speakers.
Go to step 2.
Go to audio system sound is weak or
distorted, or no sound is heard from speaker(s)
(see page 23-206).
2. Operate the volume knob to see if the volume changes.
Operation is normal.
With navigation: Replace the navigation unit (see page 23-355).
Without navigation: Replace the audio unit (see page 23-256).
Do each of t he but t ons set pr oper l y ?
Do the preset buttons recall the set radio stations? I s t he sound nor mal ?
Does t he v ol ume change?
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Volume does not increase with speed (with
navigation)
YES
NO
YES
NO
YES
NO YES
NO
23-222Audio System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR A (24P)
VSP (BLU)
NOTE: Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
1. Verify the SVC mode setting in the navigation unit sound set-up.
Change the setting to Mid and retest
(see page 23-164).
Go to step 2.
2. Do the self-diagnostic function for the vehicle speed pulse indication (see page 23-190).
Substitute a known-good navigation unit
(see page 23-355), and retest. If the symptom/
indication goes away, replace the original
navigation unit.
Go to step 3.
3. Test-drive the vehicle at highway speeds, and monitor if the volume increases.
Intermittent failure, the system is OK at this
time.
Go to step 4. 4. Remove the navigation unit (see page 23-355) and
disconnect navigation unit connector A (24P).
NOTE: Eject all the discs before removing the navigation unit to prevent damaging the CD player’s load
mechanism.
Remove the PC card before removing the navigation unit.
5. Drive the vehicle, and have an assistant measure voltage at navigation unit connector A (24P)
terminal No. 15.
Replace the navigation unit (see page 23-355).
Repair open or shorts in the wire between
navigation unit connector A (24P) terminal No. 15
and ECM/PCM connector A (44P) terminal No. 29. If
no opens or shorts are found, Update the ECM/
PCM (see page 11-227) if it does not have the latest
software or substitute a known-good ECM/PCM
(see page 11-228).
Wire side of female terminals
Is the SVC set to off?
Does t he sel f -d i agnost i c f unct i on i nd i cat e a V SPsi gnal ?
Do t he v ol ume i ncr ease? Is there a 0 5 V Pulse?
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Volume does not increase with speed
(without navigation)
YES
NO
YES
NO
YES
NO YES
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23-223
AUDIO UNIT CONNECTOR A (17P)
VSP (BLU)
NOTE: Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
1. Test-drive the vehicle at highway speeds, and monitor if the volume increases.
Intermittent failure, the system is OK at this
time.
Go to step 2.
2. Verify the SVC mode setting in the audio unit sound set-up.
Change the setting to Mid, and retest
(see page 23-164).
Go to step 3.
3. Do the self-diagnostic function for the vehicle speed pulse indication (see page 23-190).
Substitute a known-good audio unit
(see page 23-256), and retest. If the symptom/
indication goes away, replace the original audio
unit.
Go to step 4. 4. Remove the audio unit (see page 23-256) and
disconnect audio unit connector A (17P).
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
5. Drive the vehicle, and have an assistant measure voltage at audio unit connector A (17P) terminal
No. 13.
Replace the audio unit (see page 23-256).
Repair open or shorts in the wire between
audio unit connector A (17P) terminal No. 13 and
ECM/PCM connector A (44P) terminal No. 29. If no
opens or shorts are found, Update the ECM/PCM
(see page 11-227) if it does not have the latest
software or substitute a known-good ECM/PCM
(see page 11-228).
Wire side of female terminals
Do t he v ol ume i ncr ease?
Is the SVC set to off?Does t he sel f -d i agnost i c f unct i on i nd i cat e a V SPsi gnal ? Is there a 0 5 V Pulse?
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Volume is too high or too low when driving
at freeway speeds Radio tuner does not change stations
YES
NO
YES
NO YES
NO
YES
NO
23-22423-224Audio System
Symptom Troubleshooting (cont’d)
NOTE:
Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
1. Test-drive the vehicle at highway speeds, and monitor volume level.
Go to step 2.
Intermittent failure, the system is OK at this
time.
2. Change the SVC mode setting in sound set-up to Mid (see page 23-164).
With navigation: Replace the navigation unit (see page 23-355).
Without navigation: Replace the audio unit (see page 23-256).
Improper SVC setting for customers sound
taste. 1. Check the audio information on the display panel.
Go to step 2.
Go to power switch will not turn ON (see page
23-202).
2. Operate the tuning knob to see if the radio station changes.
Intermittent failure: the tuning knob is OK at
this time.
With navigation: Replace the navigation unit (see page 23-355).
Without navigation: Replace the audio unit (see page 23-256).
I s t he v ol ume l ev el t oo hi gh, or t oo l ow ?
I s t he v ol ume l ev el st i l l t oo hi gh, or t oo l ow ? Does the audio inf ormation display properly?
Does t he r ad i o st at i on change?
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General Operation
Anti-theft Feature
Symptom Diagnosis
Self-Inertial Navigation LimitationsGlobal Positioning System (GPS) Limitations
23-266Navigation System
General Troubleshooting Information
Refer to the navigation system manual for the
navigation system operating procedures.
The navigation system and audio unit have a coded
theft protection circuit. Make sure you have the anti-
theft security code before:
Disconnecting the battery.
Disconnecting the navigation unit connector A (24P) and C (8P).
Removing the No. 23 (10 A) fuse from the under-hood fuse/relay box.
After service, reconnect power to the navigation unit,
and turn the ignition switch to ON (II). Enter the 4-digit
anti-theft security code, then select Done.
If the code cannot be found, use the interactive Network
(iN) to look it up. You can view the serial number in one
of the ECU Info diagnostic screens (see page 23-305).
Alternatively, you can find the serial number on the
underside label which is located on the navigation unit
in the trunk.
When replacing the navigation unit, be sure to give the
customer the new anti-theft security code.
Certain circumstances and system limitations will result
in occasional vehicle positioning errors. Some client’s
may think this indicates a problem with the navigation
system when, in fact, the system is normal. Keep the
following items in mind when interviewing client’s
about symptoms of the navigation system.
The limitations of the self-inertial portion of the
navigation system (the yaw rate sensor and the vehicle
speed signal) can cause discrepancies between the
vehicle’s actual position and the indicated vehicle’s
position (GPS vehicle position). The following circumstances may cause vehicle
positioning errors:
Moving the vehicle with the engine stopped and the vehicle stopped, such as by ferry or tow truck, or if
the vehicle is spun on a turn table.
Tire slippage, changes in tire rolling diameters, and some driving situations may cause discrepancies in
travel distances. Examples of this include:
– Continuous tire slippage on a slippery surface
– Driving with snow chains mounted
– Abnormal tire pressure
– Incorrect tire size
– Frequent lane changes across a wide highway
– Continuous driving on a straight or gently curving highway
– Very bumpy roads
Tolerances in the system and map inaccuracies sometimes limit how precisely the vehicle’s position
is indicated. Examples of this include:
– Driving on roads not shown on the map (map matching is not possible)
– Driving on a road that winds in one direction, such as a loop bridge, an interchange, or a spiral parking
garage
– Driving on a road with a series of sharp hair-pin turns
– Driving near a gradual highway exit or transition
– Driving on one of two close parallel roads
– Making many 90 degree turns
The GPS cannot detect the vehicle’s position or
elevation during the following instances: For the first 5 to 10 minutes after reconnecting the battery (this process can take as long as 45 minutes).
When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, inside
parking structures or large trucks.
When the GPS antenna is blocked by metallic window tinting or by an object placed above it in the
vehicle. The GPS antenna requires a clear
unobstructed view of the sky.
When there is no satellite signal output (signal output is sometimes stopped for sate llite servicing).
When the satellite signals are blocked by the operation of some electronic aftermarket accessories
including, but not limited to non-OEM in-dash
entertainment units (radio, CD players/changers,
radar detectors and theft recovery systems) and cell
phones placed near the navigation system.
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Map MatchingObtaining A Navigation DVD
23-269
Something is interfering with the system’s ability to
acquire its location. Check the following:
* The vehicle must be in an open area with a clear
* Remove sources of GPS interference like metallic
* Check GPS antenna cable connection.
* Restart the engine and repeat the GPS acquire view of the sky.
window tint above antenna, or electrical items
near antenna(see owner’s manual for details).
procedure. If the problem persists, see your dealer.
If this procedure is not necessary, the system proceeds
directly to the Disclaimer screen. During initialization,
the system searches for all available GPS satellites, and
obtains their orbital information. During this procedure
the vehicle should be out in the open with a clear view
of the sky.
If the navigation system finds the satellites properly,
this box clears, and changes to the Disclaimer screen. If
within 10 minutes the system fails to locate a sufficient
number of satellites to locate your position, the
following screen appears.
It this screen appears, turn off the engine, then restart
the vehicle and move it to a different location. If the
disclaimer screen appears, the GPS initialization is
complete.
NOTE:
The average acquiring time is less than 10 minutes, but it can take as long as 45 minutes.
If the system is still unable to acquire a signal, follow the instructions on the screen. If this screen appears
again, go to troubleshooting for the GPS icon is white
or not shown (see page 23-341).
Skip to a CSF screen by pushing the MENU and INFO buttons at the same time and can move to an System
Links screen.
This part of the initialization matches the GPS
coordinates with a road on the map screen. To do this
part of the procedure, make sure that the navigation
system is displays a map, and drive the vehicle on a
mapped road shown on the map screen. Do not enter a
destination at this time. When the name of the current
road you are driving on, appears at the bottom of the
screen, the entire procedure is complete. Your system
is now ready to use. If the Navigation DVD is lost or damaged, or you need a
yearly
updated DVD, you have two ways to purchase
one. You can either call 888-549-3798, or order on-line
at www.acura.com.
Both methods require a credit card. The DVD cannot be
ordered through the parts system. The following DVDs
will not work in this navigation system:
Earlier model navigation DVDs (black, orange, light blue label and the older versions with a white label)
Map software programs manufactured by other companies
DVD movies, or DVDs containing audio recordings
Update DVDs are available for purchase usually in the
fall of each year. They may contain the following: Enhanced maps and points of interest (POI) coverage
Fixes for minor software bugs
Additional features
NOTE: Map matching must be done any time the DVD is removed or replaced.
Always order navigation DVDs on an as-needed basis. During a typical model year, each color DVD may
undergo a half a dozen software only version
upgrades to fix minor issues on some or all models
the DVD supports. This is normal. Usually only the
letter at the end of the version number changes,
while the database (maps and POIs) remain
unchanged.
Never promise your customer future free updates.
There are no free programs for updating the
navigation DVD. Update DVDs are generally available
for purchase each fall. The online DVD order site
provides information when an update for a particular
color DVD is available.
Damaged discs are not covered by warranty unless they have been damaged by the navigation system.
(cont’d)
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Overview
23-279
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 customer concern.
The Comm.Bus connects the HFL and the navigation unit.
If a POI phone number is available, the navigation unit sends the phone number (on the calcurate route to screen) to
the HandsFreeLink control unit for dialing.
(cont’d)
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