Mazda CX 7. Manual - part 368

SYMPTOM TROUBLESHOOTING [CD PLAYER/CHANGER]

09-03G–5

09-03G

End Of Sie

NO.4 SOUND JUMPS[CD PLAYER/CHANGER]

id0903e5806200

Diagnostic procedure

End Of Sie

NO.5 CD PLAYER/CHANGER SCRATCHES ON THE CD[CD PLAYER/CHANGER]

id0903e5806300

Diagnostic procedure

End Of Sie

3

• Replace the CD known to be good.

• Does the CD player/changer load the CD?

Yes

Go to the next step.

No

Replace the audio unit.

4

• Visually inspect the CD.

— Is there any dirt, scratch or deformation 

on the CD?

— Is the CD a non-conventional disc?

— Is there a CD in MP3 recording?

Yes

Explain to the customer that the defective CD or non-
conventional disc cannot be use.

No

Replace the audio unit.

STEP

INSPECTION

ACTION

4

Sound jumps
Possible DTC:03:Er02

Troubleshooting hints

• Audio unit is malfunctioning

• Defective CD (e.g., cracked, badly bent, rough edges, scratch, dirty CD, condensation)

• Improper audio unit installation (e.g., rattle, loose)

• Inadequate tire pressure

Note

• The CD may be malfunctioning if the sound jumps on the certain CD only. Inspect the CD player/changer operation 

using the CD known to be good.

STEP

INSPECTION

ACTION

1

• Does the sound jump when the vehicle is 

stopped?

Yes

Go to the Step 6.

No

Go to the next step.

2

• Drive the vehicle.

• Does the sound jump when driving over 

uneven surfaces?

Yes

Go to the next step.

No

Go to the Step 6.

3

• Is the audio unit installed securely?

Yes

Go to the next step.

No

Install the audio unit securely.

4

• Inspect the tire pressure.

• Is the tire pressure normal?

Yes

Replace the audio unit.

No

Go to the next step.

5

• Adjust the tire pressure within specification.

• Does the sound jump when driving the 

vehicle?

Yes

Replace the audio unit.

No

Audio system is normal. Explain repairs to the customers.

6

• Replace the CD known to be good.

• Does the sound jump when driving the 

vehicle?

Yes

Replace the audio unit.

No

Audio system is normal. Explain to the customer that the CD 
is malfunctioning.

5

CD player/changer scratches on the CD
Possible DTC:03:Er02

Troubleshooting hints

• Audio unit is malfunctioning

• Deformed disc is used (e.g., out of specification (thickness), bent disc)

• Multiple CDs are inserted into the CD player at the same time

STEP

INSPECTION

ACTION

1

• Were the multiple CDs inserted into the CD 

player at the same time?

Yes

Explain to the customer to insert a CD one by one.

No

Go to the next step.

2

• Visually inspect the CD.

• Is the CD a deformed disc (e.g., out of 

specification (thickness), bent disc)?

Yes

Audio system is normal. Explain to the customer that the CD 
is malfunctioning.

No

Replace the audio unit.

1871-1U-06B(09-03G).fm  5 ページ  ２００６年３月１５日　水曜日　午前１１時４６分

SYMPTOM TROUBLESHOOTING [CD PLAYER/CHANGER]

09-03G–6

NO.6 DISC CHANGE IS INOPERATIVE[CD PLAYER/CHANGER]

id0903e5806400

Diagnostic procedure

End Of Sie

NO.7 CD PLAYER DOES NOT PLAY THE MP3-FORMATTED FILE[CD PLAYER/CHANGER]

id0903e5806500

Diagnostic procedure

6

Disc change is inoperative
Possible DTC:— 

Troubleshooting hints

• Audio unit is malfunctioning

• Improper center panel installation

• Center panel is malfunctioning

STEP

INSPECTION

ACTION

1

• Inspect the CD changer operation.

• Does the CD changer operate properly?

Yes

Go to the next step.

No

Go to the symptom troubleshooting “No.3 CD player/
changer does not play the CD/No sound”.

2

• Inspect the followings:

— Is the display shown properly when 

operating the disc change button?

— Does the radio band selection operate 

properly?

Yes

Replace the audio unit.

No

Go to the next step.

3

• Inspect the center panel installation.

• Does the CD changer change the disc 

properly after re-installing the center panel?

Yes

Install the center panel securely and properly.

No

Go to the “No.1 Audio panel switch inspection” in this 
section. Replace the center panel as necessary.

7

CD player does not play the MP3-formatted file
Possible DTC:— 

Troubleshooting hints

• CD-R/RW written format is out of specification

• MP3 and other format data are in the CD-R/RW

• File extension for MP3-formatted file is incorrect (Correct. “.mp3”, incorrect: e.g., RIFF)

• Defective CD-R/RW (e.g. dirty CD, scratch)

• MP3 applicable CD player is malfunctioning

Note

• The free-software for the MP3-formatted file in the field may cause the deterioration of sound quality, noise, or defective 

play, so that the CD player won’t play the customer made MP-3-formatted file.

• The CD player may not play the CD-R/RW properly due to the disc condition.

• If there are MP-3-formatted file and other file in the same disc, the CD player may not play the disc.

• If there are MP-3-formatted file and audio data in the same disc, the CD player loads and plays the first session of the 

data only.

STEP

INSPECTION

ACTION

1

• Inspect the written format of the recorded 

data on the CD-R/RW.

• Is the written format correct?

Yes

Go to the next step.

No

Write the CD-R/RW with the correct specification.

2

• Inspect the recorded data in the CD-R/RW.

• Is there MP3 and other format data in the 

CD-R/RW.

Yes

Replace with the CD-R/RW known to be good (MP3-
formatted file data only), then inspect the CD player 
operation.

If the CD player plays the MP3-formatted file:

• Audio system is normal. Explain to the customer that the 

CD player does not operate properly if the MP3 and 
other format data are in the CD-R/RW.

If the CD player does not play the MP3-formatted 

file:

• Replace the audio unit.

No

Go to the next step.

1871-1U-06B(09-03G).fm  6 ページ  ２００６年３月１５日　水曜日　午前１１時４６分

SYMPTOM TROUBLESHOOTING [CD PLAYER/CHANGER]

09-03G–7

09-03G

End Of Sie

NO.8 MP3-FORMATTED FILE FOLDER SELECTION IS INOPERATIVE/TRACK SEARCH IS INOPERATIVE[CD 
PLAYER/CHANGER]

id0903e5806600

Note

• ID3 is a tagging format for MP3-formatted file. ID3 allows metadata (e.g., title, artist, track number, etc.) to 

be added to the MP3-formatted file.

• There are two versions in the ID tag.

— ID3v1: This is the most widespread standard tag formats and most software is compatible with this 

version. There is a limitation on the maximum number of characters for the text data.

— ID3v2: There are a variety of version in V2, but there is no interchangeability among the versions.

Limitation on the maximum number of characters for the text data (ID3v1)

Diagnostic procedure

3

• Inspect the CD-R/RW written format.

• Is the written format within the specification 

(“.mp3” is the correct file extension)?

Yes

Replace with the CD-R/RW using the “.mp3” file extension, 
then inspect the CD player operation.

If the CD player plays the MP3-formatted file:

• Audio system is normal. Explain to the customer that the 

CD player does not operate properly if the correct file 
extension is not used.

If the CD player does not play the MP3-formatted 

file:

• Replace the audio unit.

No

Go to the next step.

4

• Visually inspect the CD-R/RW.

• Is there any dirt or scratch on the CD-R/RW?

Yes

Clean the disc or replace with the CD-R/RW known to be 
good.

No

Replace the audio unit.

STEP

INSPECTION

ACTION

8

MP3-formatted file folder selection is inoperative/track search is inoperative
Possible DTC:— 

Troubleshooting hints

• Defective CD-R/RW (e.g. dirty CD, scratch)

• Conflict of ID tag version for CD-R/RW

• Improper folder and/or music title in CD-R/RW

• The number of characters of folder/audio file name in CD-R/RW exceeds the maximum number of characters

• Improper encode in CD-R/RW

• MP3 applicable CD player is malfunctioning

Item

Maximum number of characters

Description

Title

30

Music title

Artist

30

Artist name

Album

30

Album title

Year

4

Album produced year/CD wholesale year

Genre

— Music 

category 

selection

Comment

30

Free comment

Track

3

Track number

STEP

INSPECTION

ACTION

1

• Visually inspect the CD-R/RW.

• Is there any dirt or scratch on the CD/R/RW?

Yes

Clean the disc or replace with the CD-R/RW known to be 
good.

No

Go to the next step.

2

• Inspect the ID tag version.

• Is ID tag correct?

Yes

Go to the next step.

No

Write the CD-R/RW with the correct ID tag version.

3

• Inspect folder and audio file name.

• Are all file name input correctly?

Yes

Go to the next step.

No

Use the CD-R/RW that a folder and audio file name is input 
correctly.

1871-1U-06B(09-03G).fm  7 ページ  ２００６年３月１５日　水曜日　午前１１時４６分

SYMPTOM TROUBLESHOOTING [CD PLAYER/CHANGER]

09-03G–8

End Of Sie

NO.9 CD PLAYER DOES NOT INDICATE THE MP3 TITLE TEXT[CD PLAYER/CHANGER]

id0903e5806700

Diagnostic procedure

End Of Sie

4

• Inspect the encode for the folder and audio 

file name in the CD-R/RW.

• Is the encode correct?

Note

• Unreadable characters may be displayed 

if incorrect encode is used.

Yes

Go to the next step.

No

Use the correct encode.

5

• Inspect the number of characters for the 

folder and audio file name.

• Is the number of characters within the 

maximum number of characters?

Yes

Replace the audio unit.

No

Input the folder and audio file name within the maximum 
number of characters.

STEP

INSPECTION

ACTION

9

CD player does not indicate the MP3 title text
Possible DTC:— 

Troubleshooting hints

• Defective CD-R/RW (e.g. dirty CD, scratch)

• Conflict of ID tag version for CD-R/RW

• The number of characters of folder/audio file name in CD-R/RW exceeds the maximum number of characters

• Improper encode in CD-R/RW

• MP3 applicable CD player is malfunctioning

• No title input in CD-R/RW

• Input title text by 2-bytes characters

STEP

INSPECTION

ACTION

1

• Visually inspect the CD-R/RW.

• Is there any dirt or scratch on the CD/R/RW?

Yes

Clean the disc or replace with the CD-R/RW known to be 
good.

No

Go to the next step.

2

• Inspect the display the LCD.

• Is the CD (other than MP3 compatible) 

displayed on the LCD?

Yes

Go to the next step.

No

Go to the symptom troubleshooting No.9 (Entire audio 
system).

3

• Inspect the ID tag version.

• Is the ID tag correct?

Yes

Go to the next step.

No

Write the CD-R/RW with the correct ID tag version.

4

• Is the title text input into the CD-R/RW?

Yes

Go to the next step.

No

Input the title text.

Note

• Do not input the title text by two-bytes character.

5

• Inspect the encode for the folder and audio 

file name in the CD-R/RW.

• Is the encode correct?

Yes

Go to the next step.

No

Use the correct encode.

6

• Inspect the number of characters for the 

folder and audio file name.

• Is the number of characters within the 

maximum number of characters?

Yes

Replace the audio unit.

No

Input the folder and audio file name within the maximum 
number of characters.

1871-1U-06B(09-03G).fm  8 ページ  ２００６年３月１５日　水曜日　午前１１時４６分