sat nav ACURA CSX 2006 Service Repair Manual

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Overview
Speed-sensitive volume compensation (SVC)Contents Audio output
Left front CH Right front CH Right rear CH Left rear CH
23-6 Audio System
System Description
The audio unit acts as the processor for all audio functions. Select audio functions from the audio unit, the audio
remote (on the steering wheel), or by using the navigation voice control system. The audio display provides the
current audio status. For vehicles with navigation, additional audio information is available by touching the audio
button on the navigation audio screen (See the owner’s manual and the navigation system manual for more details.).
The XM receiver passes its signal to the audio unit. In addition, it communicates with the audio unit via the GA-Net bus.
Any open connections in the GA-Net bus circuit causes audio and navigation functions to appear inoperative.
For vehicles with navigation, pressing the open/close switch on the navigation display panel allows access to the CD
slot and PC card.
A security signal is daisy-chained between the audio and vehicle components for integration into the vehicle’s security
system.
Some audio systems are equipped with speed-sensitive volume compensation (SVC). The navigation or audio unit
receives the vehicle speed pulse (VSP) from the ECM/PCM. The system processes the speed input and increases the
navigation or audio system volume level as the vehicle speed increases to compensate for the various interior noises
that occur at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four
settings: SVC OFF, LOW, MID and HIGH that can be adjusted using the navigation or audio unit. The SVC comes from
the factory with the MID setting as the default.
To change the audio unit SVC setting, press the tune folder sound knob repeatedly until the SVC is displayed, rotate
the knob to adjust the SVC to the desired setting (SVC OFF, LOW, MID, or HIGH).
To change the navigation unit SVC setting, press the AUDIO button, and then select the SOUND icon on the navigation
display. Press the navigation display to select the desired setting (OFF, LOW, MID, HI).
The navigation system allows voice control for the audio, XM, PC card, and CD player. The GA-Net (audio unit)
communicates the voice control commands. When using the navigation TALK/BACK button, the audio is muted on all
speakers and you hear navigation sound on the front channels. When using the navigation or route guidance (RG), the
front speakers provides the navigation sound and the rear speakers continue to play. For more information, see the
navigation section. The outline of the interruption function is shown in this table.
Navigation
TALK/BACK Buttons Navigation voice
output Navigation voice
output Muted Muted
Route guidance Navigation voice outputNavigation voice
output Audio Audio
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GA-Net Bus Configuration
System Diagram (With navigation)
23-7
Reverse signalGPS 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
The GA-Net bus passes audio and navigation commands throughout the navigation and audio components.
These commands include navigation touch screen and hard button signals, audio/XM selections by voice, and XM
station and music title names. Because the entire bus is daisy chained between components (see diagram), 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
audio accessory must maintain the continuity of the GA-Net bus by installing the Y cable included with the accessory
kit.
(cont’d)
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Audio GlossaryItem Definition
23-9
GA-Net The GA-Net allows the audio unit to communicate with all the audio and
navigation components in a vehicle. If there is an open in the GA-Net or
components, components or the entire audio and navigation system may
appear inoperative.
GB (Gigabyte) A unit of memory or disk storage equal to billion bytes (1000 million bytes).
HDD Abbreviation for hard disc drive. They are sensitive to heat and it is not
recommended that they be used in the PC card slot for playing audio files.
Hertz (Hz) The unit of frequency equal to one cycle per second (cps). One kilohertz (kHz)
equals 1,000 cps; one megahertz (MHz) equals 1 million cps.
Integrated amplifier A component that combines a pre amp and a power amp into a single unit. A
receiver combines an integrated amp and a tuner into a single unit.
Jewel case The hard plastic case that contains a compact disc or DVD. Always use a jewel
case to prevent scratches on the underside of a CD or DVD.
LCD (Liquid Crystal Display) A type of digital display that changes reflectance or transmittance when an electrical field is applied to it.
Memory Circuitry or devices that hold information in electrical or magnetic form, such
as the AM/FM radio presets.
MB (Megabyte) One million bytes. Written as 1 MB. Megabytes are used as a measure of digital
storage space. For example, a CD can hold 650 MB.
Mic An abbreviation for microphone. For vehicles with navigation, the microphone
accepts navigation voice commands to control audio and navigation functions.
MP3 music files MP3 is an audio coding format. MP3 is a popular audio compression format on
the Internet and computers. CDs and PC Cards with these files can be played on
some vehicle’s audio system.
Mute When the navigation gives guidance, the front speakers are muted (no music).
When you use the voice control system, all of the speakers are muted.
Noise Unwanted random sounds like buzzing, hiss, pops, static, whine, etc.
PC card The slot used for playing MP3 and WMA music files. The PC Card is usually a
combination of a small flash card in a PCMCIA adaptor that slides into the slot.
The ATA, SD, and compact flash types of cards have been tested up to 1 GB.
PCMCIA A computer standard for the slot that the PC card slides into. Another term for
the PC card slot.
Processor The part of an audio device that performs tasks/calculations. In the audio unit
the processor handles muting to allow the navi to speak its voice commands,
and the decoding/playback of the sound files etc.
Radio A head unit that combines a tuner, a preamplifier, and often a power-amplifier.
Route guidance (RG) Spoken voice used for turn-by-turn navigation from the audio speakers.
SCF (Cold Start Fix) screens These screens are displayed if the system requires a GPS initialization. The vehicle should be moved outside into an open area away from buildings/power
lines.
Stereo A recording of at least two channels where you can hear sound or music from
the left or right side.
SD (Secure Digital) card This compact type of memory card allows for fast data transfer and has built-in security functions. SD cards have a small write-protection switch on the side.
Shield A metallic foil or braided wire layer surr ounding conductors which are
designed to prevent electrostatic or electromagnetic interference (noise) from
external sources such as buzzing, or popping sounds heard on the speakers.
Speaker (Loudspeaker) A device that converts electrical energy into acoustical energy (sound).
Speed-sensitive volume
compensation (SVC) The SVC increases the audio volume to compensate for increased interior noise
when the vehicle drivers at freeway speeds.
Subwoofer A loudspeaker made to reproduce the lowest audio frequencies, about 25 Hz to
125 Hz.
(cont’d)
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NAVIGATION UNIT CONNECTOR E (14P) (with
navigation)
Cavity Wire Color Connect to NAVIGATION UNIT/AUDIO UNIT CONNECTOR G (3P)
Cavity Wire Color Connect to
23-14Audio System
System Description (cont’d)
E2 LT BLU XM receiver
(SAT SYS ACC)
E3 BRN Shield for terminals No. 9 and No. 10
(BUS SH GND)
E4 GRY Shield for terminals No. 5, No. 6, No. 13, and No. 14
(SAT SH GND)
E5 WHT XM receiver (SAT R )
E6 RED XM receiver (SAT L )
E7 BLU XM receiver ( B)
E9 BLU XM receiver (SAT BUS (GA-NET))
E10 PNK XM receiver (SAT BUS (GA-NET))
E11 BLK XM receiver (GND)
E13 BLK XM receiver (SAT R )
E14 GRN XM receiver (SAT L )
: The shielded wires have a heat-shrunk tube insulating the outside of the wire. The color of the
insulating tube, typically black or dark gray, may
not match the color of the wire listed on the
schematic. G1 AM/FM antenna amplifier (RF
IN)
G2 Shield for terminal No.1 (RF SH)
G3 AM/FM antenna amplifier (SWD B)
Wire side of female terminals Terminal side of female terminals
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XM RECEIVER CONNECTOR A (14P)
Cavity Wire Color Connect to XM RECEIVER CONNECTOR B (2P)
Cavity Wire Color Connect to
23-18Audio System
System Description (cont’d)
A1 BLU Navigation unit ( B)
A2 LT BLU Navigation unit
(SYS ACC)
A3 BRN Shield for terminals No. 9 and No. 10 (GA-NET BUS SH)
A5 WHT Navigation unit (SAT R )
A6 RED Navigation unit (SAT L )
A9 BLU Navigation unit (GA-NET BUS )
A10 PNK Navigation unit (GA-NET BUS )
A11 BLK Navigation unit (GND)
A13 BLK Navigation unit (SAT R )
A14 GRN Navigation unit (SAT L )
: The shielded wires have a heat-shrunk tube insulating the outside of the wire. The color of
the insulating tube, typically black or dark gray,
may not match the color of the wire listed on the
schematic. B1 Satellite signal antenna
(SAT/TER)
B2 Shield for terminal No. 1 (GND SH)
Wire side of female terminals Terminal side of female terminals
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23-22Audio System
Circuit Diagram (cont’d)
GND
2
B2 1
BUS
GND B1
E13
R SAT A13
SAT
R E5 A5
E14
L SAT A14
BUS SH GA-NET
A3
GA-NET
E10 A10
BUS GA-NET
A9
E9
E11 A11
A1
B E7
E2
ACC SYS SYS
ACC A2 A6
E4
SAT SH
GND
SAT
L E6
XM ANTENNA LEAD
BRN*
PNK
BLU
BLK
BLU
LT BLU RED GRN BLKWHT GRY*
AUDIO UNIT or NAVIGATION UNIT XM RECEIVER
E3
BRN*
BUS SH GA-NET XM ANTENNA
BUS GA-NET
BUS
GA-NET
B
L
SATSAT
LRSAT SAT
R
(With navigation)
:GA-NET
: Shielding
*: The shielded wires have a heat-shrunk tube
insulating the outside of the wire. The color
of the insulating tube, typically black or dark gray,
may not match the color of the wire listed on the
schematic.
SAT/TER
GND SH
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XM radio preset memory is lost (with
navigation)
YES
NO
YES
NO YES
NO
YES
NO
23-71
XM RECEIVER CONNECTOR A (14P)
B(BLU)
XM RECEIVER CONNECTOR A (14P) GND (BLK)NOTE: Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
 If you can only tune to channel 000, 001, 174, and 247, make sure the navigation unit is set to channel mode
(see owners manual), if it is set to channel mode, call
XM Satellite Radio customer support, and check the
account activation status.
1. Turn the ignition switch to ON (II).
2. Turn on the navigation unit, and set each of the XM radio channel preset buttons.
Go to step 3.
Go to step 7.
3. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
4. Test all of the XM radio channel preset buttons for proper recall operation.
System is normal at this time. Check
connections at the navigation unit.
Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Disconnect XM receiver connector A (14P). 7. Measure the voltage between XM receiver
connector A (14P) terminal No. 1 and body ground.
Go to step 8.
Repair open in the wire between the
navigation unit and the XM receiver.
8. Reconnect XM receiver connector A (14P).
9. Measure the voltage between XM receiver connector A (14P) terminal No. 11 and body ground.
Substitute a known-good navigation unit
(see page 23-155), and recheck. If the symptom/
indication goes away, replace the navigation
unit.
Repair open in the wire between the XM
receiver connector and the navigation unit.
Wire side of female terminals
Wire side of female terminals
Do each of t he X M r ad i o channel pr eset but t ons set pr oper l y ?
Do the preset buttons recall the set radio stations? Is there battery voltage?
Is t her e l ess t han 0.1 V ?
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Poor or no sound with XM radio (Audio unit
does display XM channels) (with navigation)
YES
NO XM receiver connector Wire color
YES
NO
23-72 Audio System
Symptom Troubleshooting (cont’d)
XM RECEIVER CONNECTOR A (14P)
NOTE:
 Check the vehicle battery condition first.
 Check the XM radio reception in an open area. Poor reception/interference can be caused by nearby tall
buildings, mountains, or high-voltage power lines.
 Check the connectors for poor connections or loose terminals.
 If you can only tune to channel 000, 001, 174, and 247, make sure the navigation unit is set to channel mode
(see owners manual), if it is set to channel mode, call
XM Satellite Radio customer support, and check the
account activation status.
1. Turn the ignition switch to ON (II).
2. Turn on the navigation unit and select XM radio.
3. Check for an error message on the display.
Go to error code list (see page 23-27).
Go to step 4.
4. Turn the ignition switch to LOCK (0).
5. Disconnect navigation unit connector E (14P) and XM receiver connector A (14P). 6. Check for continuity between XM receiver
connector A (14P) and body ground according to
the table.
A5 WHT
A6 RED
A13 BLK
A14 GRN
Short to body ground in the wire(s) between
the navigation unit and the XM receiver. Replace
the affected shielded harness.
Go to step 7.
Wire side of female terminals
Ar e t her e any messages d i spl ay ed ? Is there continuity?
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Global Positioning System (GPS) Limitations Muting LogicLCD Unit Limitations
23-91
The GPS cannot detect the vehicle’s position during the
following conditions: Metallic window tinting above the GPS antenna.
 When only three satellite signals are received (Four satellite signals are required for accurate positioning).
 When driving near high tension power lines.
 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.
 When the satellite control centers are experiencing problems.
The accuracy of the GPS is reduced during these
instances:  Metallic window tinting above the GPS antenna.
 When only three satellite signals are received (Four satellite signals are required for accurate positioning).
 When driving near high tension power lines.
 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.
 When the satellite control centers are experiencing problems. Whenever the navigation system is giving guidance,
the front speakers are muted. When the voice control
system is being used, all of the speakers are muted.
 In cold temperatures, the display may stay dark for the first 2 or 3 minutes until it warms up.
 When the display is too hot because of direct summer sunlight, it will remain dark until the temperature
drops.
 When the humidity is high and the interior temperature is low, the display may appear cloudy.
The display will clear up after some use.
 Fingerprints on the touch panel may sometimes be noticeable because of the panel’s low-reflection
coating. Clean the screen with a soft damp cloth. You
may use a mild cleaner intended for eye glasses or
computer screens. To avoid scratching the panel, do
not rub too hard, or use abrasive cleaners, or shop
towels.
 The touch panel consists of a touch sensitive resistive membrane covering the display. Unlike previous
systems, you must actually touch the display to
activate it. Never use hard or sharp implements to
operate the screen because you risk damaging the
sensing membrane. If a touch switch does not
function immediately, shift your finger slightly, and
touch it again.
(cont’d)
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Symptom DuplicationService Precautions
System Initialization
23-92 Navigation System
General Troubleshooting Information (cont’d)
 If you can duplicate the symptom, compare it to a
known-good vehicle. Only use a vehicle of the same
model, same year, same trim, and same software
version. If you can duplicate the symptom in the
known-good vehicle, then it is a characteristic of the
system.
 When the symptom can be duplicated, follow the self- diagnostic procedures and the appropriate
troubleshooting procedures.
 When the symptom does not reappear or only reappears intermittently, ask the client about the
conditions when the symptom occurred.
– Try to establish if outside interference may be the cause.
– Try to duplicate the symptom under the same conditions the client experienced.
– Vibration, temperature extremes, and moisture (dew, humidity) are factors that are difficult to
duplicate.
– Inspect the vehicle for aftermarket electronic devices (vehicle locators, radar detector amps, etc.)
that may be hidden.
When troubleshooting navigation system problems,
ensure that the known-good vehicle is the same
software version year and model as the vehicle being
serviced. Mixing incompatible navigation DVDs or
other system components can delay the
troubleshooting process by creating effects unrelated to
the original problem.  If you need to replace the navigation unit, inform the
customer that personal information in the navigation
system may be lost. If possible, have the client record
their personal information before the unit is replaced
On ’07-08 models you can back-up the navigation
data and transfer it to a new navigation unit. See save
users memory (see page 23-150).
 Before disconnecting the battery, make sure you have the anti-theft codes for the audio and the
navigation system, and write down the audio presets.
Also obtain any PGM-FI or transmission DTCs and
freeze frame date (which are lost when the ECM/PCM
loses power).
 When the battery is disconnected, the internal GPS clock is reset to 0:00. The clock will reset to the
correct time after the system finishes GPS
initialization.
 After reconnecting the battery, you have to wait to get the initial signal from the satellite. It will take from 10
to 45 minutes.
 Before returning the vehicle to the client, enter the audio and navigation anti-theft security code, then
enter the audio presets.
 Adjust the setup clock settings (time zone and daylight savings) in the navigation system.
If the navigation system loses power (like the battery
was disconnected), the navigation system requires
initialization. Once completed, your system is ready to
use.
This initialization requires the following:  Entering the 4-digit anti-theft security code to unlock the system
 GPS initialization (may not be needed depending of the length of time the system was without power)
 Map matching to align the GPS to a location on the map
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