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STEP
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INSPECTION
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ACTION
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1
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• Is there sound break-up 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 sound break-up or poor sound quality between "15" and "20"?
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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 between "-3 - +3" of "BASS/TREB"?
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Note
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• When the AUDIO CONT button is pressed for a few seconds, BASS/TREB is set to "0".
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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 sound break-up between "+6--6" of BASS/TREB at the maximum volume, the system is normal.
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4
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• Attempt to duplicate the symptom on another vehicle.
• Is the sound quality better than the customer's vehicle?
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Yes
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• Replace the audio unit.
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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 sound break-up by adjusting BAL/FADE.
• Is the suspect speaker pointed upward?
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Yes
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Go to Step 7.
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No
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Go to the next step.
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6
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• Inspect the speaker installation condition.
• 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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7
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• Remove the speaker.
• Is there any foreign material penetration or damage to 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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8
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• Inspect the sound again.
• Is there sound break-up?
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Yes
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Go to the next step.
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No
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Inspect for vibration from the door trim and/or package trim. Repair or replace the suspect trim if necessary.
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9
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• Replace with a speaker known to be operational. (e.g., swap right and left speakers)
• Does the sound break-up heard at the same location?
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Yes
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• Replace the audio unit.
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No
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Replace the speaker.
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