2006 ACURA CSX radio

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Seek Stop Test
23-7823-78 Audio System
Sound Quality Diagnosis (cont’d)
8. Compare the client’s vehicle’s sound quality results
to the known-good vehicle’s results.
 If the sound quality in the customer’s vehicle is comparable to the sound quality in the known-
good vehicle, then the client’s vehicle is
operating as designed.
 If the sound quality is not comparable, check these items in order.
– Loose or improperly installed speakers or other hardware that may become excited by
the vibrations generated by the speakers
– Poor power or ground to the stereo amplifier (Type S model)
– Damaged speaker(s)
– Faulty amplifier (Type S model)
– Faulty navigation unit
– Faulty audio unit Do this test to check the performance of the audio unit’s
AM and FM reception. Refer to symptom
troubleshooting: audio sound weak or distorted, or no
sound is heard from speakers (display is normal)
(see page 23-39) before continuing with this test.
NOTE:
 Window tint, aftermarket theft-recovery devices and other aftermarket accessories may reduce radio
reception.
 Changes in cloud cover and other atmosphere conditions will affect the ab ility of the navigation unit
or audio unit to receive radio signals.
1. Park the client’s vehicle in an open area away from buildings or other obstructions.
2. Park a known-good vehicle (same year, model, and trim level) next to the client’s vehicle, facing the
same direction.
3. Start the engine in the client’s vehicle, and turn on the radio.
4. Set the FM receiver to 87.7 MHz.
5. Press the Seek button and record the first station that the navigation unit or audio unit locks onto.
6. Press the Seek button repeatedly, and write down each station that the navigation unit or audio
unit locks onto until the station recorded in step 5 is
reached again.
7. Set the AM receiver to 530 kHz.
8. Press the Seek button, and record the first station that the navigation unit or audio unit locks
on to.
9. Press the Seek button repeatedly, and write down each station that the navigation unit or audio
unit locks onto until the station recorded in step 8 is
reached again.
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23-79
10. Turn the ignition switch to LOCK (0).
11. Start the engine in the known-good vehicle, andthen perform steps 4 thru 10 on the known-good
vehicle.
12. Compare the number of stations received in steps 6 and 9 in the client’s vehicle with the number of
stations received in the known-good vehicle.
 If the number of stations received is the same, or within 10 %, the audio unit’s tuner performance
is OK. The problem may be atmospheric
conditions, multi path interference, or other
obstructions to the radio signal.
 If the client’s vehicle receives fewer stations by at least 10 %, go to step 2 of poor AM or FM radio
reception of interference (see page 23-29).
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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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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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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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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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Navigation Unit Inputs and Outputs for Connector A (17P)
Navigation Unit Connector A (17P) TerminalNumber Wire Color Terminal Name Description Voltage (about) Symptom
23-113
1 RED ILL ( )
Ground for
illumination light With full dash
lights brightness,
0VIf open: When brightness = Auto, night mode for the
display is inoperative when lights on.
If short to ground: No change to display.
9 BLK RADIO GND (Ground)Ground for display
unit 0 V
If open: No change to display.
If short to ground: No change to display.
10 GRY ILL ( ) (Illumination
positive)Parking light on
signal from dash
and console lights Light on =
battery voltage,
Lights off = 0 VIf open: When brightness = Auto, night mode for the
display is inoperative when lights on.
If short to ground: Blows fuse No. 14 (7.5 A) in
under-dash fuse/relay box.
13 BLU VSP (Vehicle speed
pulse)Vehicle speed
pulse signal from
ECM/PCM Pulses 0 5 V:
Average 2.5 V,
when movingIf open: No vehicle speed pulses.
Diagnostic screen Car Status, VSP Navi = 0.
If short to ground: No vehicle speed pulses.
Diagnostic screen Car Status, VSP Navi = 0.
17 WHT B ( B power
source)Continuous power
source
Battery voltage If open: Screen completely off (no backlight visible).
If short to ground: Blows fuse No. 23 (10 A) in the
under-hood fuse/relay box.
(cont’d)
Wire side of female terminals
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23-118 Navigation System
Circuit Diagram
AC CK AC SO AC SI
BLU
BACK-UP LIGHT SWITCH (MT)
 
K-LINE
MICU
A14
PUR
Q14 Q4
GRNA4 A6
LT BLU
Q8 Q1
WHT
UNDER-DASH FUSE/RELAY BOX
ORN
BRN10
BRN
3 CABLE REEL
B6 D5 ORN 3
A29
2 1
D4 CABLE REEL GRN
RED/BLK
BACKTALK
5
GRY
GRY*
D3 BRN
D1
D2
YEL
GPS
H1
H2 G504
GND
C4
BLK
VSP
BLU
A13
ILL
ILL
F2 F4
RED YEL F3A1
A10
GRY
RED A17
C1 C7
BRN NAVIGATION UNIT
VOICE CONTROL SWITCH
8
GRN 680
10 k
2.2 k
ECM/PCM
(VEHICLE
SPEED SIGNAL)
GPS SH
GND GPS
ANTENNA
MIC SH
GND MIC
GND
MIC
SIG
NA VI
GUIDE
No. 23 (10 A)
FUSE (In the
under-hood
fuse/relay box)
MIC
ADPT
DASH LIGHTS
BRIGHTNESS
CONTROLLER
No. 14 (7.5 A) FUSE
(In the under-dash
fuse/relay box)
No.14(7.5A)FUSE
(In the under-dash
fuse/relay box)
DASH LIGHTS
BRIGHTNESS
CONTROLLER
B
BACK UP BACK
LT
No. 35
(7.5 A)
FUSE B
RADIO
SCTY
RADIO
ACC
RADIO
AUDIO
REMOTE
GND
MULTIPLEX INTEGRATED
CONTROL UNIT (MICU) (AT)
CLIMATE
CONTROL
UNIT G505
RADIO
GND
A9
BLK VSP
GPS
MIC
GND MIC
SIG
MIC
ADPT
E3
BLU
PNK
E9
BUS SH
GND
XM RECEIVER BRN*
BRN*E10
A9
A10
A3
(’08 model) BUS
(GA-NET)
BUS
(GA-NET)
AUDIO
REMOTE
SWITCHBRN
1
2
5
MICROPHONE *1:
: Shielding
This 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.
G2
BUS SH
GND BUS
(GA-NET)
BUS
(GA-NET) WHT WHT
4
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