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2008 - MX-5 - Body and Accessories

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



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


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 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

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

No

Replace the speaker.

(See DOOR SPEAKER REMOVAL/INSTALLATION.)

(See REAR SPEAKER REMOVAL/INSTALLATION.)

(See CENTER SPEAKER REMOVAL/INSTALLATION.)




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