NO.5 SOUND BREAK-UP OR POOR SOUND QUALITY [ENTIRE AUDIO SYSTEM]
id0903e2818300
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5 |
Broken sound or poor sound quality |
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Possible DTC |
With M-MDS |
U3000:09 |
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Without M-MDS |
Audio unit
• 09:Er21
Car-navigation unit
• Device code 09/Error code 21
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POSSIBLECAUSE
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• Speaker malfunction (e.g., any foreign material, broken)
• Improper speaker installation
• Audio unit malfunction (with audio system)
• Car-navigation unit malfunction (with car-navigation system)
• Vibration of door trim and/or package trim
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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• Is there broken sound or poor sound quality from all speakers?
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Yes
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Go to the next step.
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No
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Go to Step 5.
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2
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• Inspect the sound while adjusting the sound volume.
• Is there broken sound or poor sound quality between “30” and “40”?
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Yes
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Go to the next step.
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No
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The system is normal.
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3
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• Inspect the BASS/TREB.
• Is there poor sound quality at “-3 —+3” of “BASS/TREB”?
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Yes
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Go to the next step.
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No
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If there is broken sound at “-6 —+6” of BASS/TREB with the maximum volume, the system is normal.
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4
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• Attempt to duplicate the symptom on the other vehicle.
• Is the sound better than the customer’s vehicle?
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Yes
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Without Bose®
• Replace the audio unit (with audio system).
• Replace the car-navigation unit (with car-navigation system).
With Bose®
• If noise occurs from the speaker of a specific channel, or the volume is minimized and the noise occurs:
• If noise occurs from the speaker of two or more channels or the volume is minimized and the noise does not occurs:
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No
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The system is normal.
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5
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• Identify the speaker with broken sound by adjusting BAL/FADE.
• Is the speaker installed properly?
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Yes
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Go to the next step.
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No
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Install the speaker properly.
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6
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• Remove the speaker.
• Is there any foreign material or damage on the speaker?
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Yes
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Repair or replace the suspect speaker.
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No
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Go to the next step.
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7
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• Inspect the sound again.
• Is there broken sound?
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Yes
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Go to the next step.
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No
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Inspect the vibration from the door trim and/or package trim. Repair or replace the suspect trim as necessary.
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8
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• Replace with the speaker known to be good. (e.g., swap right and left speakers)
• Does the broken sound appear at the same location?
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Yes
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Without Bose®:
• Replace the audio unit (with audio system).
• Replace the car-navigation unit (with car-navigation system).
With Bose®:
• If noise occurs from the speaker of a specific channel, or the volume is minimized and the noise occurs:
• If noise occurs from the speaker of two or more channels or the volume is minimized and the noise dose not occurs:
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No
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Replace the speaker.
(See TWEETER REMOVAL/INSTALLATION.)
(See REAR SPEAKER REMOVAL/INSTALLATION.) (4SD)
(See BASS-BOX REMOVAL/INSTALLATION.) (5HB/WGN)
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