2006 ACURA CSX radio

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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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Navigation Function
Function Diagram
Vehicle Speed Pulse
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STEERING BUTTONSHANDSFREELINK
CONTROL UNIT
AUDIO UNIT
LCD
SWITCH
Destination
DVD-ROM
YAW RATE SENSOR 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
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
GA-Net bus
USB ADAPTER UNIT
XM RECEIVER MICROPHONE
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,
microphone, voice control switch, 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 output shaft (countershaft)
speed sensor, then it processes the signal and transmits it to the speedometer and other systems.
(cont’d)
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ÎGA-Net Bus Configuration
Muting Signal Logic
23-282Navigation System
System Description (cont’d)
Navigation unit
Accessory
(CD changer etc.)
XM receiver
USB Adapter
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.
The audio muting logic is orchestrated by the navigation unit. The navigation unit determines what audio source has
priority to use the speakers.
The priority of the audio sources is as follows:
HandsFreeLink has the highest priority, followed by, navigation, and finally the radio/CD player. The priority is passed
by HandsFreeLink to the navigation unit by dedicated mute wires. The navigation mute signal is passed to the stereo
amplifier.
The navigation unit temporarily disables the voice control buttons, but allows guidance to be heard. In addition, the
navigation unit suppresses the output from the XM receiver, disc pl ayer, or other audio accessories.
When the navigation system sends out a voice route guidance command, the rear speakers are muted, and the
navigation voice is heard in the front speakers.
When the navigation voice control system and HandsFreeLink is use, the rear speakers are muted, and the navigation
voice prompts are heard from the front speakers.
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Navigation Unit Inputs and Outputs for Connector A (24P)
Navigation Unit Connector A (24P) TerminalNumber Wire Color Terminal Name Description Voltage (about) Symptom
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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.
12 BLK RADIO GND (Ground)Ground for display
unit 0 V
If open: No change to display.
If short to ground: No change to display.
13 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.
15 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.
24 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
08/08/21 14:15:46 61SNR030_230_0294
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23-296Navigation System
Circuit Diagram
A10 A9
BRN10
BRN
3 CABLE REEL
A5 A29
D1 CABLE REEL GRN
RED/BLK
BACKTALK
5
GRY
GPS
H1
H2
VSP BLU
A15
PNK BLU NAVIGATION UNIT
HFL-VOICE CONTROL SWITCH
8
GRN 680
10 k
2.2 k
GPS
ANTENNA
No. 14 (7.5 A) FUSE
(In the under-dash
fuse/relay box) DASH LIGHTS
BRIGHTNESS
CONTROLLER
AUDIO
REMOTE
GND VSP
GPS
XM
RECEIVER A3BRN K-LINE
MICU
A14
PUR
Q14 Q4
GRNA4
A3
LT BLU
Q8 Q1
WHT
WHT
UNDER-DASH FUSE/RELAY BOX A1
A13
A24 C1
C7
WHT B
BACK UP
BACK
LT
B
BACK UP
SCTY
RADIO
ACC
RADIO
G2 RED
GRY
ILL
ILL
RED
ORN ACC HOT in ACC (I)
and ON (II)
ACC
BAT
IGNITION
SWITCH
C2
WHT
BRN
No. 23
(10 A)
UNDER-HOOD FUSE/RELAY BOX
BATTERY
H1
D4 No. 2
(IG)
(50 A)
E15
No. 35
(7.5 A) No.14(7.5A)FUSE
(In the under-dash
fuse/relay box)
DASH LIGHTS
BRIGHTNESS
CONTROLLER
GPS
SH
GA-NET
BUS
GA-NET
BUS
GA-NET
BUS SH *:
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.
:GA-NET
:Shielding
28 27
D9
RED
D7 D8
GRN
MIC
GND MIC
SIG MIC
SIG
MIC
GND
MIC
SH MIC MIC
21
GRY BRN YEL
14 13
12
MIC SH MIC MIC
GRY
B10 8
HFL/NAVI
COMM SH
GRY GRY
B24 RED 7
21 20
GRN
B11
B23
BLK HFL/NAVI
COMM1
HFL/NAVI
COMM2
HFL/NAVI
COMM3
B12 WHT 6
HFL/NAVI
COMM4
HFL
SWITCH
A10 A9
BRNE3
E10
PNK BLU E9
USB
ADAPTER
UNIT A3BRN
GA-NET
BUS
GA-NET
BUS
GA-NET
BUS SH GA-NET
BUS
GA-NET
BUS
GA-NET
BUS SH
PNK BLU
A12
G504
G505 BLK
BLK
GND RADIO
GNDHFL/NAVI
COMM1
HFL/NAVI
COMM2
HFL/NAVI
COMM3
HFL/NAVI
COMM4 HFL/NAVI
COMM SH
NAVI
GUIDE
No. 1 (BAT) (100 A)
ECM/PCM
(VEHICLE
SPEED SIGNAL)
YEL AC
SI
RED AC
SO
CLIMATE
CONTROL
UNIT
BLUAC
CLK
D5
D6
D12
C4 ORN
MOONROOF
SWITCH MIC
ADPTHFL-NAVIGATION
MICROPHONE
3
* *
*
**
*
*
08/08/21 14:15:47 61SNR030_230_0299
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Start-up procedure and Diagnostic Menu System Links
23-297
System Diagnostic Mode
Return System LinksHelp
Exit Diag
ReturnReturn
Navi.ECUSelect Diagnosis Items Self- Diagnosis Mode
Detail Information & Setting
(Navi will check internal function. connections, etc.
Perform this test with vehicle stopped and engine running.)
(Individual Diagnostic screens to confirma specific diagnostic screen.)
XM
Error
History
Yaw
Sensor Car Status
ECU Info. Hard Key
DVD Mic
HFL
Press any icon if you want to see details. GPS Ant. R. Camera
Display Radio
A/C
Start the vehicle, and at the disclaimer screen use the
navigation display hard buttons as described below:
Make sure the battery is in good condition, then press
and hold the three buttons MAP/GUIDE, MENU, and
CANCEL, for about 3 seconds. The display screen goes
directly to the Select Diagnosis Items menu shown
below.
 Self-Diagnosis Mode (runs the automatic diagnosis of the navigation system)
 Detail Information & Setting (allows you to manually diagnose the navigation system) 1. By selecting Self-Diagnosis Mode from the
navigation screen main menu. The message at the
bottom of the screen flashes indicating the
diagnostic is running. Make sure you enter the
audio anti-theft code.
NOTE: The system cannot complete a full diagnosis unless the engine is running.
 DTC 2703 can be stored when the ignition switch is at ACCESSORY (I). With the ignition switch is
in ACCESSORY (I), the climate control unit is
turned off and the navigation unit loses
communication and stores DTCs. Therefore,
there is a possibility that the system is normal
even DTC 2703 is stored. Check system links with
the engine running, and if it shows normal, the
system is OK at this time.
2. Select the icon you want to diagnose. Push in the select the icon to see the details of that diagnostic
function.
(cont’d)
08/08/21 14:15:48 61SNR030_230_0300
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••••••
••• •••
••• •••
••• ••• •••
••• •••
••• •••
Icon Color Information
Icon Icon Color
GREEN REDYELLOW WHITEGRAY
23-299
DisplayResult of
Connection
under the
Display
diagnosis menu
is OK. Result of
Connection
under the
Display
diagnosis menu
is NG. Executing (Not
completed)
Radio Result of
Connection
under the Radio
diagnosis menu
is OK. Result of
Connection
under the Radio
diagnosis menu
is NG. Executing (Not
completed)
XM Result of
Connection
under the XM
diagnosis menu
is OK. Result of
Connection
under the XM
diagnosis menu
is NG. Executing (Not
completed)
GPS Ant. All result of Antenna and
Receiver in NAVI
ECU is OK.Any result of
Antenna and
Receiver in NAVI
ECU is OK. Executing (Not
completed)
R-Camera Result of Connection
under the R-
Cammera
diagnosis menu
is OK. (optional)Result of
Connection
under the R-
Cammera
diagnosis menu
is NG. (optional)Result of the
Connection
under the R-
Cammera
diagnosis menu
is NG. (optional)Executing (Not
completed)
A/C Result of
Connection
under the Aircon
diagnosis menu
is OK. Result of
Connection
under the Aircon
diagnosis menu
is NG. Executing (Not
completed)
HFL Result of
Connection
under the HFL
diagnosis menu
is OK. Result of
Connection
under the HFL
diagnosis menu
is NG. Executing (Not
completed)
: DTC 2703 can be stored when the ignition switch is in ACCESSORY (I). With the ignition switch in ACCESSORY (I), the climate control unit is turned off and the navigation unit loses communication and
stores DTCs. It is possible that the system is normal with DTC 2703 stored. Check the system links with the
engine running, and if it shows normal, the system is OK at this time.
(cont’d)
08/08/21 14:16:38 61SNR030_230_0302
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Factory diagnostic screen In Line DiagDetailed Information & Settings
23-301
In Line Diag
123
456
789
0 Return
Navi ECU
Display XXXXCorrect PIN
GPS Antenna
RR Camera RadioXM
HFL A/C
Exit Diag
Start Diag
BACK
Delete Done
KA
Select Diagnosis Items
Self- Diagnosis Mode
Detail Information & Setting
(Navi will check internal function. connections, etc.
Perform this test with vehicle stopped and engine running.)
(Individual Diagnostic screens to confirma specific diagnostic screen.)
NOTE: If the vehicle left the factory in the factory
diagnostic mode, or if the navigation unit is replaced
you will see this screen every time you turn on the
ignition.
When a navigation unit is powered up for the first time
at the factory or after replacement with a new or
remanufactured navigation unit, the factory diagnosis
screen (In Line Diag) appears. Normally the factory
does the steps necessary to verify proper operation and
terminate the factory diagnostic.
Until the proper confirmation sequence is done, the
screen appears every time the vehicle is started.
Follow the steps below to prevent the screen from
showingupinthefuture:
 Press and hold the buttons (MENU, MAP/GUIDE, and CANCEL) for about 3 seconds. The Select Diagnosis
items screen appears.
 Press and hold the MAP/GUIDE button for 5 10 seconds. A screen with a Complete button,
appears.
 Press complete, then Return, and then shut the key off for 5 seconds. Do not disconnect the battery
during this period as the unit is saving the setting to
the SRAM memory. The In Line Diag should not
appear again.
 Restart the vehicle, and confirm normal operation by completing the TQI of the Navigation System Service
Bulletin. These section allows you to run a specific diagnostic
and allows additional setting choices for some screens
that are not shown when selecting an icon from the
System Links screen.
When you select the menu item Detail Information &
Setting menu, the main diagnosis menu is displayed.
(cont’d)
08/08/21 14:16:39 61SNR030_230_0304
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