2006 ACURA CSX fuse

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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
ProCarManuals.com
DYNOMITE -2009-

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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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DYNOMITE -2009-

Navigation Through Menus
23-362HandsFreeLink System
General Troubleshooting Information (cont’d)
Many issues result from the client not using the system
properly. Make sure the client is using the HFL buttons
and not the navigation buttons. When the HFL TALK
button is pressed, the client hears one audible tone.
When the HFL BACK button is pressed, the client hears
two audible tones. Make sure to press the HFL BACK
button to exit the HFL main menu after completing a
call and before giving any navigation commands.
The HFL system may experience a number recognition
issue, such as when a client says a set of numbers in a
group unrecognized by the system. The HFL system
understands phone numbers in specific blocks of 1, 3, 4,
7, and 10 numbers. For example, the system
understands:
1234567890
123-456-7890
1-2-3-4-5-6-7-8-9-0
The system may become confused if numbers are
stated in other blocks, as following: 1234-567-890
12-34-56-78-90
12345-67890
123-4567-890 To skip a voice prompt, press and release the HFL TALK
button while the HFL system is speaking. The system
beings listening for your next voice command.
To go back a step in a voice command sequence, press
and release the HFL BLACK button, or press the HFL
TALK button and say ‘‘Go back.’’ If you
don’t say
anything while the HFL system is listening for your
voice command, it times out and stops voice
recognition. The next time you press and release the
HFL TALK button, the HFL system begins listening from
the point it timed out.
If you’ve finished or want to stop a voice command
sequence at any time, press and release the HFL BACK
button, or press and release the HFL TALK button, wait
for the beep, and say ‘‘Cancel.’’ The next time you press
and release the HFL TALK button, the HFL system
begins from its main menu. To avoid keeping the audio
system muted, press and release the HFL BACK button
when you are finished.
NOTE: You can say multiple commands in one
sequence, like ‘‘Phone setup-pair’’ after pressing the
HFL TALK button.
08/08/21 14:18:37 61SNR030_230_0365
ProCarManuals.com
DYNOMITE -2009-

Dropped Calls
23-365
Clients may perceive dropped calls as being an HFL
system fault, but most dropped calls are from cell
phone and cell phone carrier issues. The HFL system
does not directly handle the cell phone signal. It allows
the cell phone to transmit the cell phone audio over the
vehicle’s audio system.
Before troubleshooting for dropped calls, confirm the
cell phone settings: Disable Audio Answer. If Auto Answer is enabled, incoming calls are routed to voice mail.
 Disable Always Ask/Trust, Authorize Device, or similar setting, If these settings are enabled, each
time the HFL system attempts to link to the phone, the
phone will ask if you want to connect. If you do not
allow the connection, the HFL will not operate. The
phone must be set to N ever Ask, Authorize Device,
etc. (based on the phone manufacturer and carrier)
for permission. Refer to the cell phone owner’s
manual for more information.
 Disable Flip Open to Answer. If this setting is enabled, the phone must remain open in the vehicle. If it is
closed, the incoming calls are routed to voice mail. Always confirm with the client if the number of dropped
calls is higher while using the HFL system as opposed
to using the cell phone only. Clients often confuse
problems with their phone or carrier as a problem with
the HFL system. The HFL system cannot control or
determine:
 Cellular connection quality.
 Signal strength.
 Cellular coverage.
 Ambient weather conditions that affect cellular signals.
When a client complains about dropped calls, ask
questions about when or where the calls are dropped,
such as:  Do you drive the same route on a regular basis?
 Does the call drop in the same location?
 Where do you keep your cell phone?
 Have you compared the number of dropped calls using the HFL versus making calls from the handset?
 Does your phone have an antenna that needs to be extended?
(cont’d)
08/08/21 14:18:37 61SNR030_230_0368
ProCarManuals.com
DYNOMITE -2009-

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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
ProCarManuals.com
DYNOMITE -2009-

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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
ProCarManuals.com
DYNOMITE -2009-

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23-375
3
27
HANDSFREELINK CONTROL UNIT
MIC
SIG
MIC
SIG HFL
MUTE
BRN
YEL
HFL-NAVIGATION
MICROPHONE HFL
ICON
TELEM
SIG TELEM
SIG
12 13 14
D8 D7 D9 B8 B20 B21 B9
GRY
MIC
SIG MIC
SIG HFL
MUTEHFL
ICONTELEM
SIG TELEM
SIG
GRN RED LT BLU LT GRN BLU PNK
GRY
MIC
SH
GRY
B-CAN
18
PNK
PNK
LT BLU
MICU PNK
Q6
DATA LINK
CONNECTOR
(DLC)
GAUGE CONTROL
MODULE (TACH)
CLIMATE CONTROL
UNIT
28
191125 26
Q8
UNDER-DASH FUSE/RELAY BOX
AUDIO
REMOTE
GND
A5
BRN
A 7B24
B12B10
GRY
RED WHT
6
20 HFL/NAVI
COMM2
B23
BLK GRN
21B11
GRY8
HFL/NAVI
COMM1
HFL/NAVI
COMM3HFL/NAVI
COMM4HFL/NAVI
COMM SH
HFL/NAVI
COMM2
HFL/NAVI
COMM1 HFL/NAVI
COMM3
HFL/NAVI
COMM4HFL/NAVI
COMM SH MIC
SIG SH
TELEM
SIG SH
MIC MIC
NAVIGATION UNIT
12


ORN
MOONROOF
SWITCH
3 *: 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.
: CAN line
: Shielding
*
*
*
*
*
08/08/21 14:18:40 61SNR030_230_0378
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Cavity Wire Test condition Test: Desired resultPossible cause if result is not obtained
Cavity Wire Test condition Test: Desired resultPossible cause if result is not obtained
23-388HandsFreeLink System
Control Unit Input Test/Replacement
B
A
WHT PUR
PNK
BLK
1. Remove the center console (see page 20-92).
2. Remove the console lower box (see page 20-95).
3. Disconnect the 28P connector (A) from the HandsFreeLink control unit (B).
4. Inspect the connector and socket terminals for a good pinfit to be sure they are all making good contact.
 If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
 IftheterminalslookOK,gotostep5.
5. Reconnect the connector and make these input tests at the connector.  If any test indicates a problem, find and correct the cause, then recheck the system.
 If all the input tests prove OK, go to step 6.






1 BLK Under all conditions Check for voltage to ground:
There should be less than 0.5 V.Poor ground (G501)
An open in the wire
15 WHT Under all conditions Check for voltage to ground: There should be battery voltage.Blown No. 23 (10 A) fuse in the
under-hood fuse/relay box
An open in the wire
16 PUR Ignition switch ON (II) Check for voltage to ground: There should be battery voltage.Blown No. 35 (7.5 A) fuse in the
under-dash fuse/relay box
An open in the wire
6. Disconnect the 28P connector again, and make this input test at the connector.  If the test indicates a problem, find and correct the cause, then recheck the system.
 If the input test proves OK, the HandsFreeLink control unit must be faulty, replace it.
18 PNK Under all conditions Check for continuity between No. 18 terminal and the driver’s under-dash
fuse/relay box connector Q (16P)
terminal No. 6:
There should be continuity.An open in the wire
Driver’s under-dash fuse/relay
box connector Q (16P)
disconnected Check for continuity to ground:
There should be no continuity.
Short to ground
Wire side of female terminals
08/08/21 14:18:43 61SNR030_230_0391
ProCarManuals.com
DYNOMITE -2009-