NO.5 SOUND BREAK-UP OR POOR SOUND QUALITY [ENTIRE AUDIO SYSTEM]

id0903e2818300

5 | Sound break-up or poor sound quality
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Possible DTC | 09:Er21
POSSIBLE CAUSE | • Improper speaker installation • Door trim and/or package trim vibration • Audio unit malfunction • Audio amplifier malfunction (with Bose®) • Speaker malfunction (e.g., foreign material penetration, damage)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Is there sound break-up 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 sound break-up or poor sound quality between “15” and “20”? | Yes | Go to the next step.
No | The system is normal.
3 | • Inspect the BASS/TREB. • Is there poor sound quality between “-3 —+3” of the “BASS/TREB”? Note • When the AUDIO CONT/TUNE switch is pressed for a few seconds, BASS/TREB is set to “0”. | Yes | Go to the next step.
No | If there is sound break-up between “-6—+6” of the BASS/TREB at the maximum volume, the system is normal.
4 | • Attempt to duplicate the symptom on another vehicle. • Is the sound quality better than the customer’s vehicle? | Yes | Without Bose® • Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) With Bose® • Replace the audio amplifier if the following occurs: (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) ― Noise occurs from a specific speaker. • Replace the audio unit if the following occurs: (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) ― Noise occurs from two or more speakers.
No | The system is normal.
5 | • Identify the speaker with sound break-up by adjusting BAL/FADE. • Is the speaker installed properly? | Yes | Go to the next step.
No | Install the speaker properly.
6 | • Remove the speaker. • Is there any foreign material penetration or damage to the speaker? | Yes | Repair or replace the suspect speaker.
No | Go to the next step.
7 | • Inspect the sound again. • Is there sound break-up? | Yes | Go to the next step.
No | Inspect for vibration from the door trim and/or other trim. Repair or replace the suspect trim if necessary.
8 | • Replace with a speaker known to be operational. (e.g., swap right and left speakers) • Is the sound break-up heard at the same location? | Yes | Without Bose® • Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) With Bose® • Replace the audio amplifier if the following occurs: (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) ― Noise occurs from a specific speaker. • Replace the audio unit if the following occurs: (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) ― Noise occurs from two or more speakers.
No | Replace the speaker.