Acura CSX. Manual — part 627
SNR9A0DJ10300000000FAAT12
SNR9A0DJ10300000000FAAT13
−
−
−
−
−
−
−
−
Radio preset memory is lost
Volume does not change
YES
NO
YES
NO
YES
NO
YES
NO
23-221
23-221
NOTE: If only the XM stations are lost, go to XM radio
preset memory is lost (see page 23-248).
1. Set each of the radio station preset buttons.
Go to step 2.
• With navigation: Replace the navigation unit
(see page 23-355).
• Without navigation: Replace the audio unit
(see page 23-256).
2. Turn the ignition switch to LOCK (0) for 1 minute,
then turn it back to ON (II).
3. Test the preset buttons for proper recall operation.
System is normal at this time. Check the
connections at the navigation unit or audio unit.
• With navigation: Replace the navigation unit
(see page 23-355).
• Without navigation: Replace the audio unit
(see page 23-256).
NOTE:
• Check the vehicle battery condition first.
• Check the connectors for poor connections or loose
terminals.
• Set the fader and balance positions to the center.
1. Listen for sound from the speakers.
Go to step 2.
Go to audio system sound is weak or
distorted, or no sound is heard from speaker(s)
(see page 23-206).
2. Operate the volume knob to see if the volume
changes.
Operation is normal.
• With navigation: Replace the navigation unit
(see page 23-355).
• Without navigation: Replace the audio unit
(see page 23-256).
Do each of the buttons set pr oper ly?
Do the pr eset buttons r ecall the set r adio stations?
Is the sound nor mal?
Does the volume change?
08/08/21 14:10:49 61SNR030_230_0224
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*05
SNR9A0DJ10300000000FAAT14
−
−
−
−
−
−
−
−
Volume does not increase with speed (with
navigation)
YES
NO
YES
NO
YES
NO
YES
NO
23-222
Audio System
NAVIGATION UNIT CONNECTOR A (24P)
VSP (BLU)
NOTE:
• Check the vehicle battery condition first.
• Check the connectors for poor connections or loose
terminals.
1. Verify the SVC mode setting in the navigation unit
sound set-up.
Change the setting to Mid and retest
(see page 23-164).
Go to step 2.
2. Do the self-diagnostic function for the vehicle
speed pulse indication (see page 23-190).
Substitute a known-good navigation unit
(see page 23-355), and retest. If the symptom/
indication goes away, replace the original
navigation unit.
Go to step 3.
3. Test-drive the vehicle at highway speeds, and
monitor if the volume increases.
Intermittent failure, the system is OK at this
time.
Go to step 4.
4. Remove the navigation unit (see page 23-355) and
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.
5. Drive the vehicle, and have an assistant measure
voltage at navigation unit connector A (24P)
terminal No. 15.
Replace the navigation unit (see page 23-355).
Repair open or shorts in the wire between
navigation unit connector A (24P) terminal No. 15
and ECM/PCM connector A (44P) terminal No. 29. If
no opens or shorts are found, Update the ECM/
PCM (see page 11-227) if it does not have the latest
software or substitute a known-good ECM/PCM
(see page 11-228).
Wire side of female terminals
Is the SV C set to of f ?
Does the self -diagnostic f unction indicate a V SP
signal?
Do the volume incr ease?
Is ther e a 0
5 V Pulse?
08/08/21 14:10:49 61SNR030_230_0225
−
*10
SNR9ANKJ10300000000FAAT15
−
−
−
−
−
−
−
−
Volume does not increase with speed
(without navigation)
YES
NO
YES
NO
YES
NO
YES
NO
23-223
AUDIO UNIT CONNECTOR A (17P)
VSP (BLU)
NOTE:
• Check the vehicle battery condition first.
• Check the connectors for poor connections or loose
terminals.
1. Test-drive the vehicle at highway speeds, and
monitor if the volume increases.
Intermittent failure, the system is OK at this
time.
Go to step 2.
2. Verify the SVC mode setting in the audio unit
sound set-up.
Change the setting to Mid, and retest
(see page 23-164).
Go to step 3.
3. Do the self-diagnostic function for the vehicle
speed pulse indication (see page 23-190).
Substitute a known-good audio unit
(see page 23-256), and retest. If the symptom/
indication goes away, replace the original audio
unit.
Go to step 4.
4. Remove the audio unit (see page 23-256) and
disconnect audio unit connector A (17P).
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
5. Drive the vehicle, and have an assistant measure
voltage at audio unit connector A (17P) terminal
No. 13.
Replace the audio unit (see page 23-256).
Repair open or shorts in the wire between
audio unit connector A (17P) terminal No. 13 and
ECM/PCM connector A (44P) terminal No. 29. If no
opens or shorts are found, Update the ECM/PCM
(see page 11-227) if it does not have the latest
software or substitute a known-good ECM/PCM
(see page 11-228).
Wire side of female terminals
Do the volume incr ease?
Is the SV C set to of f ?
Does the self -diagnostic f unction indicate a V SP
signal?
Is ther e a 0
5 V Pulse?
08/08/21 14:10:49 61SNR030_230_0226
SNR9A0DJ10300000000FAAT16
SNR9A0DJ10300000000FAAT17
−
−
−
−
−
−
−
−
Volume is too high or too low when driving
at freeway speeds
Radio tuner does not change stations
YES
NO
YES
NO
YES
NO
YES
NO
23-224
23-224
Audio System
NOTE:
• Check the vehicle battery condition first.
• Check the connectors for poor connections or loose
terminals.
1. Test-drive the vehicle at highway speeds, and
monitor volume level.
Go to step 2.
Intermittent failure, the system is OK at this
time.
2. Change the SVC mode setting in sound set-up to
Mid (see page 23-164).
• With navigation: Replace the navigation unit
(see page 23-355).
• Without navigation: Replace the audio unit
(see page 23-256).
Improper SVC setting for customers sound
taste.
1. Check the audio information on the display panel.
Go to step 2.
Go to power switch will not turn ON (see page
23-202).
2. Operate the tuning knob to see if the radio station
changes.
Intermittent failure: the tuning knob is OK at
this time.
• With navigation: Replace the navigation unit
(see page 23-355).
• Without navigation: Replace the audio unit
(see page 23-256).
Is the volume level too high, or too low?
Is the volume level still too high, or too low?
Does the audio inf or mation display pr oper ly?
Does the r adio station change?
08/08/21 14:10:50 61SNR030_230_0227
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