fuse box ACURA CSX 2006 Service Repair Manual

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Display does not dim or brighten with
dimmer (without navigation)
YES
NO
YES
NO
YES
NO YES
NO
23-227
AUDIO UNIT CONNECTOR E (14P)
NOTE:
 Check the vehicle battery condition first.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn the combination light switch ON and OFF to see if the symptom can be duplicated.
Go to step 3.
Operation is normal.
3. Turn the combination light switch to OFF.
4. Rotate the illumination control dial.
Operation is normal.
Go to step 5.
5. Disconnect, and check audio unit connector A (17P) for a loose or a poor connection.
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
Go to step 6.
Operation is normal.
6. Turn the ignition switch to LOCK (0).
7. Remove the audio unit (see page 23-256). 8. Turn the ignition switch to ON (II).
9. Measure the voltage between audio unit connector
A (17P) terminals No. 1 and No. 10. Rotate the dash
brightness controller buttons to see if the voltage
changes.
Substitute a known-good audio unit
(see page 23-256), and recheck. If the symptom/
indication goes away, replace the original audio
unit. If symptom is still present, substitute a known-
good center panel display and recheck. If the
symptom/indication goes away, replace the
original center panel display (see page 23-256).
Repair open in the wire between the under-
dash fuse/relay box and the gauge control
module.
Wire side of female terminals
Is it duplicated?
Does the illumination dim and brighten normally asy ou r ot at e t he d i al ?
Reconnect aud i o uni t connect or A ( 17 P), andr echeck t he sy mpt om; d oes i t st i l l appear ? Does t he v ol t age change?
08/08/21 14:10:51 61SNR030_230_0230
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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.
08/08/21 14:14:21 61SNR030_230_0269
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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
23-291
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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Navigation Unit Inputs and Outputs for Connector C (8P)
Navigation Unit Connector C (8P)TerminalNumber Wire Color Terminal Name Description Voltage (about) Symptom
23-293
1 WHT B BACK UP Continuous power
sourceBattery voltage If open: Display picture goes out (display back light
still on). NOTE: System will reboot to enter code
screen.
If short to ground: Blows fuse No. 23 (10 A) in the
under-dash fuse/relay box.
4 BLK GND Ground for navigation unit0 V If open: No effect on system.
If short to ground: No effect on system.
7 BRN BACK LT Reverse signal of select laver from
Multiplex
integrated Control
unit (A/T) or
backup light switch
(M/T)In reverse,
battery voltage:
Otherwise0V
If open: Navigation never sees the reverse signal
and back-up camera does not come on when in
reverse. Diagnostic screen Car Status, Back = 0.
If short to ground: Blows fuse No. 10 (7.5 A) in the
under-dash fuse/relay box.
(cont’d)
Wire side of female terminals
08/08/21 14:15:46 61SNR030_230_0296
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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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No picture is displayed
YES
NO
YES
NO YES
NO
YES
NO
23-338Navigation System
Symptom Troubleshooting
NAVIGATION UNIT CONNECTOR A (24P)
BBACKUP(WHT)
NAVIGATION UNIT CONNECTOR A (24P) ACC RADIO (PUR)
NOTE: Check the vehicle battery condition first.
 Make sure that the correct DVD color and version are installed.
 Check any official Honda service website for more service information about the navigation system.
 Check the connectors for poor connections or loose terminals.
 Before troubleshooting, make sure you have the navigation system anti-theft code.
1. Check the No. 23 (10 A) fuse in the under-hood fuse/relay box and the No. 35 (7.5 A) fuse in the
under-dash fuse/relay box, and reinstall the fuse if
it is OK.
Go to step 2.
Replace the fuse and recheck.
2. Turn the ignition switch to ON (II).
3. Operate the radio and listen to the audio.
Go to step 4.
Refer to audio system troubleshooting.
4. Turn the ignition switch to LOCK (0).
5. Remove the navigation unit (see page 23-355). 6. Measure the voltage between navigation unit
connector A (24P) terminal No. 24 and body ground.
Go to step 7.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between navigation unit connector A (24P) terminal No. 14 and body ground.
Go to step 9.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
Wire side of female terminals
Wire side of female terminals
IsthefuseOK? Can y ou hear t he aud i o? Is there battery voltage?
Is there battery voltage?
08/08/21 14:17:50 61SNR030_230_0341
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Display day/night mode does not work or
does not work properly System locks up or freezes constantly
YES
NO
YES
NO YES
NO
23-34823-348Navigation System
Symptom Troubleshooting (cont’d)
NOTE:
 Check the vehicle battery condition first.
 Check the connectors for poor connection or loose terminals.
 Before troubleshooting, get the navigation system anti-theft code.
 After troubleshooting, enter the navigation system anti-theft code.
 Full brightness on the instrument panel brightness control with the head lights turned on causes the
system to stay in the day mode, even when the lights
are on.
1. Make sure the instrument panel brightness control is not on full brightness. Turn the headlights on,
and adjust the dash brightness to the middle range.
2. Change the day/night mode under Set-up to AUTO, and recheck.
The system is OK at this time.
Go to step 3.
3. Go into the Diagnostic Menu and use the Car Status test to check for an ILL signal (see page 23-315).
Replace the navigation unit (see page 23-355).
Check the ILL circuit between the
navigation unit and the No. 14 (7.5 A) fuse in the
under-dash fuse/relay box. NOTE:
 Check the vehicle battery condition first.
 Make sure that the correct DVD color and version are installed.
 Check any official Honda service website for more service information about the navigation system.
1. Start the engine, and turn the ignition switch to LOCK (0), then turn the ignition switch to ON (II).
The system is OK at this time.
Check the DVD for scratches or damage, and
the navigation unit for water damage. If OK, go into
the Diagnostic Menu, and do all of the Unit Check
tests (see page 23-305). Also check for low battery
charge or poor charging system performance.
Does t he d i spl ay change t o d ay and ni ght mod es w hen t ur ni ng t he head l i ght s on and of f ?
I s t he I LL si gnal OK ? Does the system reboot?
08/08/21 14:17:52 61SNR030_230_0351
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Navigation cannot control XM radio Navigation frequently asks for anti-theft
code and/or needs GPS initialization
YES
NO
YES
NO YES
NO
YES
NO
23-35023-350Navigation System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR A (24P)
BBACKUP(WHT)
NAVIGATION UNIT CONNECTOR A (24P) ACC RADIO (PUR)
NOTE: Check the vehicle battery condition first.
 Make sure that the correct DVD color and version are installed.
 Check any official Honda service website for more service information about the navigation system.
1. Start the vehicle.
2. Make sure the anti-theft code for the navigation system is entered.
3. Go into the Diagnostic mode, and use the System Links diagnosis (see page 23- 297).
Do the troubleshooting for the voice
guidance cannot be heard (see page 23-341).
Go to step 4.
4. Substitute a known-good navigation unit (see page 23-355).
Replace the navigation unit (see page 23-355).
Replace the XM receiver (see page 23-258). NOTE:
 This is often caused by a loss of battery power, a low or poor battery condition, or a poor ground.
 Make sure that the correct DVD color and version are installed.
 Check any official Honda service website for more service information about the navigation system.
1. Measure the voltage between navigation unit connector A (24P) terminal No. 24 and body ground.
Go to step 2.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
2. Turn the ignition switch to ON (II).
3. Measure the voltage between navigation unit connector A (24P) terminal No. 14 and body ground.
Go to step 4.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
Wire side of female terminals
Wire side of female terminals
Is the X M icon red? Can t he nav i gat i on sy st em cont r ol X M r ad i o? Is there battery voltage?
Is there battery voltage?
08/08/21 14:17:52 61SNR030_230_0353
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HandsFreeLink Control Unit Inputs and Outputs
HANDSFREELINK CONTROL UNIT 28P CONNECTOR
Cavity Wire Color Connect to
23-372 HandsFreeLink System
System Description
HANDSFREELINK CONTROL UNIT 28P CONNECTOR
1 BLK Body ground to G501 (GND)
2 BLU HFL switch (HFL STRG SW)
3 LT BLU Navigation unit (HFL MUTE)
6 WHT Navigation unit (HFL/NAVI COMM4)
7 RED Navigation unit (HFL/NAVI COMM3)
8 GRY Shield for terminals No. 6, No. 7, No. 20, and No. 21 (HFL/NAVI COMM SH)
11 BLU Navigation unit (TELM SIG )
12 GRY Shield for terminals No. 13 and No. 14 (MIC SH)
13 YEL HFL-navigation microphone (MIC )
14 BRN HFL-navigation microphone (MIC )
15 WHT No. 23 (10 A) fuse in the under-dash fuse/relay box ( B)
16 PUR No. 35 (7.5 A) fuse in the under-dash fuse/relay box (ACC)
18 PNK B-CAN communication (B-CAN)
19 LT GRN Navigation unit (HFL icon)
20 BLK Navigation unit (HFL/NAVI COMM1)
21 GRN Navigation unit (HFL/NAVI COMM2)
25 PNK Navigation unit (TELM SIG )
26 GRY Shield for terminals No. 11 and No. 25 (TELM SIG SH)
27 GRN Navigation unit (MIC SIG )
28 RED Navigation unit (MIC SIG )
: 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.
Wire side of female terminals
08/08/21 14:18:38 61SNR030_230_0375
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23-374HandsFreeLink System
Circuit Diagram
UNDER-HOOD FUSE/RELAY BOX
Q1E5
WHT 15 16
ORN
RED
WHT
ACC
BAT
IGNITION SWITCH
No. 23 (10 A)
No. 2 (IG) (50 A)
BATTERY
No. 1 (BAT) (100 A)
BRN
BRN
2
GRN 3
BLK
G501 1
CABLE REEL
H1
D4
G2
B ACC
MICU
13 HFL-VOICE CONTROL SWITCH4
LIGHTS
(LEDx4)
5 PUR
UNDER-DASH FUSE/RELAY BOX
No. 35 (7.5 A)
GND 20BLUETOOTH
TRANSCEIVER
1k
HANDSFREELINK CONTROL UNIT
VOICE
CONTROL
SWITCH
HFL
BACK HFL
TALK
47 180 A
C2
No. 4 (10 A) FUSE
(In the under-hood
fuse/relay box) ORN/WHT 10
20
HFL
STRG
SW
DASH LIGHTS
BRIGHTNESS
CONTROLLER RED BRN
BRN
1
2
11
12
RED/BLK
08/08/21 14:18:39 61SNR030_230_0377
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