2006 ACURA CSX audio

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Poor AM or FM radio reception or
interference (with navigation)
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
23-196
Audio System
Symptom Troubleshooting
A
B
NOTE: Check the vehicle battery condition first.
 Check for aftermarket accessories plugged into the vehicle accessory power sockets (including cell
phones).
 Check the connectors for poor connections or loose terminals.
 Check the radio reception in an open area. Compare it to a known-good vehicle when ever possible.Poor
reception/interference can be caused by the
following:
– The radio station is far away.
– Atmospheric conditions are unfavorable.
– Tall buildings, mountains, or high-voltage power lines are nearby.
– Aftermarket metallic wi ndow tint.
1. Turn the ignition switch to ON (II).
2. Do the seek stop test (see page 23-255).
Multipath interference or weak station.
Operation is normal. Go to step 3.
3. Check if the radio reception/interference is the same in several locations.
Go to step 4.
Multipath interference or weak station.
Operation is normal.
4. Start the engine.
5. Check the reception/interference.
Check the antenna and radio grounds. If OK,
check the charging system and the ignition
system. Go to step 6.
6. Turn the ignition switch to LOCK (0). 7. Remove the right side C-pillar trim (see page 20-75).
8. Check the connections from the AM/FM antenna
amplifier to the window antenna.
Repair the connections, or substitute a
known-good AM/FM antenna amplifier and retest.
If the symptom/condition goes away, replace the
original AM/FM antenna amplifier (see page
23-263).
Go to step 9.
9. With the help of an assistant inside the vehicle, have the assistant shine a flashlight (A) along each
antenna wire (B). Check from the outside of the
vehicle for any breaks or openings in the antenna
wires (the light shines through).
Repair the window antenna. Go to AM/FM
antenna repair (see page 23-264), or replace the
rear window (see page 20-47) if the damaged
section is too long.
Go to step 10.
I s t he t est v ehi cl e w i t hi n 10 % of t he k now n-goodvehicle?
Is t he r ecept i on/ i nt er f er ence t he same?
I s t her e noi se ( st at i c or w hi ne) onl y w i t h t heengi ne r unni ng? Ar e t her e any l oose or d amaged connect i ons?
Ar e t her e any br eak s or cut s i n t he ant enna?
08/08/21 14:09:50 61SNR030_230_0199
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
YES
NO
23-198Audio System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR G (3P)
RF IN
NAVIGATION UNIT CONNECTOR G (3P) RF SHRF IN NAVIGATION UNIT CONNECTOR G (3P)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR RF SH
RF IN
NAVIGATION UNIT CONNECTOR G (3P)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR RF IN
RF IN
19. Turn the ignition switch to LOCK (0).
20. Disconnect navigation unit connector G (3P).
21. Check for continuity between navigation unitconnector G (3P) terminal No. 1 and body ground.
Replace the AM/FM antenna lead and/or
sublead.
Go to step 22.
22. Check for continuity between navigation unit connector G (3P) terminals No. 1 and No. 2.
Replace the antenna lead and/or sublead.
Go to step 23. 23. Check for continuity between navigation unit
connector G (3P) terminal No. 2 and the AM/FM
antenna amplifier 3P connector terminal No. 2.
Replace the antenna lead and/or sublead.
Go to step 24.
24. Check for continuity between navigation unit connector G (3P) terminal No. 1 and AM/FM
antenna amplifier 3P connector terminal No. 1.
Replace the AM/FM antenna amplifier
(see page 23-263), and recheck. If the reception is
still poor, replace the navigation unit (see page
23-355).
Replace the AM/FM antenna lead and/or
sublead.
Terminal side of female terminals
Terminal side of female terminals Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
Is there continuity?
Is there continuity? Is there continuity?
Is there continuity?
08/08/21 14:09:51 61SNR030_230_0201
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
YES
NO
YES
NO
23-200Audio System
Symptom Troubleshooting (cont’d)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR
ANT B AM/FM ANTENNA AMPLIFIER 3P CONNECTOR
ANT B
AUDIO UNIT CONNECTOR G (3P)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR ANT B
ANT B
10. Remove the audio unit (see page 23-256). Checkthat the antenna lead is properly connected.
Go to step 11.
Reconnect the connector, and recheck the
function.
11. Disconnect the antenna cable 3P connector from the AM/FM antenna amplifier (see page 23-263).
12. Turn the ignition switch to ON (II).
13. Turn on the audio unit.
14. Measure the voltage between the AM/FM antenna lead connector terminal No. 3 at the AM/FM
antenna amplifier and body ground.
Go to step 19.
Go to step 15.
15. Turn the ignition switch to LOCK (0).
16. Disconnect audio unit connector G (3P). 17. Check for continuity between the AM/FM antenna
amplifier 3P connector terminal No. 3 and body
ground.
Repair short to body ground in the wire
between the audio unit and the AM/FM antenna
amplifier.
Go to step 18.
18. Check for continuity between audio unit connector G (3P) terminal No. 3 and the AM/FM antenna
amplifier 3P connector terminal No. 3.
Substitute a known-good audio unit
(see page 23-256), and recheck.
Repair open in the wire between the audio
unit and the AM/FM antenna amplifier.
Terminal side of female terminals Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
I s i t connect ed pr oper l y ?
Is there battery voltage? Is there continuity?
Is there continuity?
08/08/21 14:09:52 61SNR030_230_0203
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
YES
NO
23-201
AUDIO UNIT CONNECTOR G (3P)
RF IN
AUDIO UNIT CONNECTOR G (3P) RF IN
RF SH AUDIO UNIT CONNECTOR G (3P)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR RF SH
RF SH
AUDIO UNIT CONNECTOR G (3P)
AM/FM ANTENNA AMPLIFIER 3P CONNECTOR RF IN
RF IN
19. Turn the ignition switch to LOCK (0).
20. Disconnect audio connector G (3P).
21. Check for continuity between audio unit connector G (3P) terminal No. 1 and body ground.
Replace the antenna lead and/or sublead.
Go to step 22.
22. Check for continuity between audio unit connector G (3P) terminals No. 1 and No. 2.
Replace the antenna lead and/or sublead.
Go to step 23. 23. Check for continuity between audio unit connector
G (3P) terminal No. 2 and the AM/FM antenna
amplifier 3P connector terminal No. 2.
Replace the antenna lead and/or sublead.
Go to step 24.
24. Check for continuity between audio unit connector G (3P) terminal No. 1 and the AM/FM antenna
amplifier 3P connector terminal No. 1.
Replace the AM/FM antenna amplifier
(see page 23-263), and recheck. If the reception is
still poor, replace the audio unit (see page 23-256).
Replace the antenna lead and/or sublead.
Terminal side of female terminals
Terminal side of female terminals Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
Is there continuity?
Is there continuity? Is there continuity?
Is there continuity?
08/08/21 14:09:53 61SNR030_230_0204
ProCarManuals.com
DYNOMITE -2009-

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Audio unit power switch will not turn on (No
information display and no sound)
(with navigation)
YES
NO
YES
NO
YES
NO YES
NO
23-202Audio System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR A (24P)
ACC RADIO
(PUR) BBACKUP
(WHT)
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. Push the power switch ON to see if the navigation unit turns ON.
Intermittent failure, the system is OK at this
time.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 23 (10 A) fuse in the under-hood fuse/relay box and No. 35 (7.5 A) fuse in the under-
dash fuse/relay box.
Go to step 5.
Replace the fuse(s), and recheck.
5. Remove the navigation unit (see page 23-355). Check that the navigation unit is properly
connected.
NOTE: Eject all the discs before removing the navigation unit to prevent damaging the CD player’s load
mechanism.
 Remove the PC card before removing the navigation unit.
Go to step 6.
Reconnect the connector, and recheck the
function. 6. Disconnect navigation unit connector A (24P)
7. Turn the ignition switch to ON (II).
8. Measure the voltage between body ground and
navigation unit connector A (24P) terminals No. 14
and No. 24 individually.
Go to step 9.
Repair open in the wire(s) between the No. 23
(10 A) fuse in the under-hood fuse/relay box and
the No. 35 (7.5 A) in the under-dash fuse/relay box
and the navigation unit.
9. Turn the ignition switch to LOCK (0).
10. Reconnect navigation unit connector A (24P).
Wire side of female terminals
Does t he nav i gat i on uni t d i spl ay oper at e pr oper l y , and d oes t he aud i o sound nor mal ?
Ar e t he f uses OK ?
I s i t connect ed pr oper l y ? I s t her e bat t er y v ol t age on bot h t er mi nal s?
08/08/21 14:09:53 61SNR030_230_0205
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
YES
NO
YES
NO
Audio unit power switch will not turn on (No
information display and no sound)
(without navigation)
23-20323-203
NAVIGATION UNIT CONNECTOR A (24P)
RADIO GND (BLK)
11. Turn the ignition switch to ON (II).
12. Measure the voltage between navigation unitconnector A (24P) terminal No. 12 and body ground.
Replace the navigation unit (see page 23-355).
Repair open in the wire between navigation
unit connector A (24P) terminal No. 12 and body
ground (G 505) (see page 22-32). 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. Push the power switch ON to see if audio unit turns ON.
Intermittent failure, the system is OK at this
time.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. 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.
Go to step 5.
Replace the fuse(s), and recheck.
5. Remove the audio unit (see page 23-256). Check that the audio unit is properly connected.
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
Go to step 6.
Reconnect the connector, and recheck the
function.
(cont’d)
Wire side of female terminals
I s t her e l ess t han 0.1 V on bot h t er mi nal s? Does t he aud i o uni t oper at e pr oper l y , and d oes t he
aud i o sound nor mal ?
Ar e t he f uses OK ?I s i t connect ed pr oper l y ?
08/08/21 14:09:53 61SNR030_230_0206
ProCarManuals.com
DYNOMITE -2009-

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YES
NO YES
NO
23-204Audio System
Symptom Troubleshooting (cont’d)
AUDIO UNIT CONNECTOR A (17P)
BBACKUP
(WHT)
ACC RADIO (PUR) AUDIO UNIT CONNECTOR A (17P)
RADIO GND (BLK)
6. Disconnect audio unit connector A (17P).
7. Turn the ignition switch to ON (II).
8. Measure the voltage between audio unit connectorA (17P) terminal No. 14 and body ground, and
between terminal No. 17 and body ground.
Go to step 9.
Repair open in the wire(s) between the No. 23
(10 A) fuse in the under-hood fuse/relay box and
No. 35 (7.5 A) in the under-dash fuse/relay box and
the audio unit.
9. Turn the ignition switch to LOCK (0).
10. Reconnect audio unit connector A (17P).
11. Turn the ignition switch to ON (II). 12. Measure the voltage between audio unit connector
A (17P) terminal No. 9 and body ground.
Replace the audio unit (see page 23-256).
Repair open in the wire between audio unit
connector A (17P) terminal No. 9 and body ground
(G505) (see page 22-38).
Wire side of female terminals Wire side of female terminals
Is there battery voltage on the both terminals?
Is t her e l ess t han 0.1 V ?
08/08/21 14:09:53 61SNR030_230_0207
ProCarManuals.com
DYNOMITE -2009-

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Audio unit power switch will not turn off
(with navigation)
YES
NO YESNO
23-205
NAVIGATION UNIT CONNECTOR A (24P)
ACC RADIO (PUR)NOTE: Check for aftermarket accessories plugged into the vehicle’s accessory power sockets.
 Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Push the power switch OFF or turn the ignition switch to LOCK (0) to see if the navigation unit
turns OFF.
Operation is normal.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Remove the navigation unit (see page 23-355).
5. Disconnect navigation unit connector A (24P). NOTE: Eject all the discs before removing the navigation unit to prevent damaging the CD player’s load
mechanism.
 Remove the PC card before removing the navigation unit. 6. Measure the voltage between navigation unit
connector A (24P) terminal No. 14 and body ground.
Check for short to power on PUR wire.
Replace the navigation unit (see page 23-355).
Wire side of female terminalsI s t he nav i gat i on uni t OF F ? Is there battery voltage?
08/08/21 14:09:53 61SNR030_230_0208
ProCarManuals.com
DYNOMITE -2009-