5

Sound break-up or poor sound quality / Possible DTC: 09:Er21

Troubleshooting hints

• Speaker malfunction (e.g., foreign material penetration, damage)

• Improper speaker installation

• Audio unit malfunction

• Audio amplifier malfunction (with Bose)

• Door trim and/or package trim vibration

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 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 button 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.)

  (See AUDIO 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.)

  (See AUDIO 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 suspect speaker pointed upward?

Yes

Go to 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 penetration or damage to the speaker?

Yes

Repair or replace the suspect speaker.

No

Go to the next step.

8

• 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 package trim. Repair or replace the suspect trim if necessary.

9

• 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.)

  (See AUDIO 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.)

  (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)

• Noise occurs from two or more speakers.

No

Replace the speaker.

(See DOOR SPEAKER REMOVAL/INSTALLATION.)

(See REAR SPEAKER REMOVAL/INSTALLATION.)

(See CENTER SPEAKER REMOVAL/INSTALLATION.)