Honda Civic. Manual — part 149

The card may have been damaged by heat. Suggest that the customer remove
the card when exiting the vehicle.

The customer may have formatted the card using the format NTFS. Only the
formats FAT and FAT32 are accepted by the system.

Hard Disc Drive (HDD) cards may not work properly in the system and can
overheat and quit functioning, particularly in a hot vehicle. They are not
recommended.

The filing structure of the card may exceed the specification of 8 folder levels
deep, 99 folders maximum, and 999 total tracks maximum. If any of these
limitations are exceeded, the system may not properly display or play the
tracks.

SOUND QUALITY DIAGNOSIS

Special Tools Required

Diagnostics CD 07AAZ-SDBA100

Use the following tests to check sound quality.

LEFT/RIGHT CHANNEL ID

Do this test to confirm proper channel routing.

1. Insert the audio diagnostic CD (T/N: 07AAZ-SDBA100) into the navigation

NOTE:

A delay when first inserting a card is normal. The system is
reading the File Tag information for album names, artists,
and song titles, and there is no hourglass. The delay length
depends on the number of tracks and the complexity of the
folder structure. See the audio article for an explanation of
the terms used above.

NOTE:

Before beginning the following tests, write down the
customer's bass, treble, fader and balance settings, and
then set them to their center positions for testing.

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

unit or audio unit.

2. Play track No. 1 (left, both, right channel ID) at a normal, or slightly higher

than normal, volume level.

3. The voice should be audible only from the channel or channels when indicated.

If the channel ID is correct for each side, go to the PHASE TEST.

If the channel ID is not correct, check for;

Shorted speaker wire

Faulty amplifier (with premium sound system)

Faulty navigation unit

Faulty audio unit

Special Tools Required

Diagnostics CD 07AAZ-SDBA100

PHASE TEST

Do this test to confirm proper speaker phasing.

1. Insert the audio diagnostic CD (T/N: 07AAZ-SDBA100) into the navigation

unit or audio unit.

2. Play track No. 2 (phase) at a normal, or slightly higher than normal, volume

level.

3. The voice should sound centered and focused when it is in-phase.
4. The voice should sound diffused, and have less bass when it is out of phase.

If the voice changes from in-phase to out of phase as indicated by the
prompt, the phasing is correct. Go to ELECTRICAL NOISE TEST.

If the voice always sounds out of phase, phasing is not correct. Check for;

Crossed speaker wires

Faulty amplifier (with premium sound system)

Faulty navigation unit - Faulty audio unit

Special Tools Required

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

Diagnostics CD 07AAZ-SDBA100

ELECTRICAL NOISE TEST

Do this test to check for electrical noise being induced into the audio system.

1. Insert the audio diagnostic CD (T/N: 07AAZ-SDBA100) into the navigation

unit or audio unit.

2. Play track No. 4 (digital zero) at a normal, or slightly higher than normal,

volume level.

3. Operate any electrical device that may create electrical noise in the audio

system, including starting the engine.

4. Play track No. 5 (near digital zero) at a normal, or slightly higher than normal,

volume level.

5. Operate any electrical device that may create electrical noise in the audio

system, including starting the engine.

6. Play track No. 6 (SNR) at a normal, or slightly higher than normal, volume

level.

7. Operate any electrical device that may create electrical noise in the audio

system, including starting the engine.

If no abnormal noise is heard, go to INDIVIDUAL SPEAKER TEST.

If the noise is present only during the SNR track, replace the navigation
unit or audio unit.

If the noise is heard during the digital zero or near digital zero track, check
for;

Poor ground for the audio unit, amplifier, engine or battery cable

Pinched or shorted speaker or amplifier wire

Faulty amplifier (with premium sound system)

Faulty navigation unit

NOTE:

Electrical noise may be caused by outside sources that
cannot be handled by the audio system. Make sure you
remove any cell phones and/or turn off any aftermarket
device before beginning this test.

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

Faulty audio unit

Other faulty components causing excessive electrical noise (ignition
coils, alternator, door lock actuators, etc.). Disconnect any suspect
components, and then replay the tracks that were originally noisy. If
the noise is gone, check the component's circuit and the component.

Special Tools Required

Diagnostics CD 07AAZ-SDBA100

INDIVIDUAL SPEAKER TEST

Do this test to identify a faulty speaker.

1. Insert the audio diagnostic CD (T/N: 07AAZ-SDBA100) into the navigation

unit or audio unit.

2. Play track No. 30 (steady 300 Hz tone) at a normal, or slightly higher than

normal, volume level.

3. Listen to each speaker for poor sound compared to the other speakers. Use the

audio unit's fader and balance settings to help isolate the channel with the
problem.

If the sound quality produced by a specific speaker is poor, substitute it
with a known-good speaker. If the poor sound quality continues, go to the
SOUND BALANCE TEST.

If the sound quality is OK, go to the SOUND BALANCE TEST.

Special Tools Required

Diagnostics CD 07AAZ-SDBA100

SOUND BALANCE TEST

Perform this test to identify a faulty channel or speaker.

1. Insert the audio diagnostic CD (T/N: 07AAZ-SDBA100) into the navigation

unit or audio unit.

2. Confirm the bass and treble are set to the center positions.

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)