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NO.5 BROKEN SOUND OR POOR SOUND QUALITY

id0903a1803400

5 | Broken sound or poor sound quality/09:Er21
TROUBLESHOOTING HINTS
• Speaker malfunction (e.g., any foreign material. broken). • Improper speaker installation. • BOSE amplifier unit malfunction. • Vibration of door trim and/or package trim.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Are there a broken sound or poor sound quality from all speakers? | Yes | Go to the next step.
No | Go to the Step 5.
2 | • Inspect the sound while adjusting the sound volume. • Is there a broken sound or poor sound quality between "15" and "20"? | Yes | Go to the next step.
No | The system is normal.
3 | • Inspect the BASS/TREE. • Is there a poor sound quality at "+3--3" of "BASS/TREB"? Note • When press the AUDIO CONT button for a few seconds, BASS/TREB is set at "0". | Yes | Go to the next step.
No | If there is a broken sound at "+6--6" of BASS/TREB with the maximum volume, the system is normal.
4 | • Attempt to duplicate the symptom on the other vehicle. • Is the sound better than the customer's vehicle? | Yes | Replace the BOSE amplifier unit.
No | The system is normal.
5 | • Identify the speaker with a broken sound by adjusting BAL/FADE. • Is the suspect speaker installed upward? | Yes | Go to the Step 7.
No | Go to the next step.
6 | • Inspect the speaker installation condition. • Is the speaker installed properly? | Yes | Go to the next step.
No | Install the speaker properly.
7 | • Remove the speaker. • Is there any foreign material or damage on the speaker? | Yes | Repair or replace the suspect speaker.
No | Go to the next step.
8 | • Inspect the sound again. • Is there broken sound? | Yes | Go to the next step.
No | Inspect the vibration from the door trim and/or package trim. Repair or replace the suspect trim as necessary.
9 | • Replace with the speaker known to be good. (e.g., swap right and left speaker.) • Does the broken sound appear at the same location? | Yes | Replace the BOSE amplifier unit.
No | Replace the speaker.