GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Holden 🢒 2009 🢒 Epica 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 Audio Distortion - One or More Speakers

Audio Distortion - One or More Speakers Front

Step

Action

Yes

No

1
  1. Turn the ignition and the radio ON.
  2. Check for distorted or inoperative rear speakers using the fader and the balance controls with all the of the sources (AM, FM, tape, CD).

Are the rear speakers distorted?

Go to Step 2

Go to Step 4

2

Inspect the speaker and the door area for damage, rattles, or vibration

Is the distortion caused by anything loose or in the way of the speaker?

Go to Step 3

Go to Step 4

3

Make the necessary repairs to secure the component causing the distortion.

Is the repair complete?

System OK

--

4
  1. Remove the front speakers and disconnect the speaker connector.
  2. Using an ohmmeter, test the speaker wires for short to ground.

Does the ohmmeter show the specified value?

Go to Step 6

Go to Step 5

5

Repair the short circuit between the front speaker connector and the radio connector.

Is the repair complete?

System OK

--

6

Substitute a known good speaker for the speaker causing the distortion.

Is the distortion eliminated?

Go to Step 7

Go to Step 8

7

Replace the speaker.

Is the repair complete?

System OK

--

8

Replace the audio system.

Is the repair complete?

System OK

--

Audio Distortion - One or More Speakers Rear

Step

Action

Yes

No

1
  1. Turn the ignition and the radio ON.
  2. Inspect for distorted or inoperative rear speakers using the fader and the balance controls with all the of the sources (AM, FM, tape, CD).

Are the rear speakers distorted?

Go to Step 2

Go to Step 4

2

Inspect the speakers, the rear deck, and the trunk area for damage, rattles, or vibration.

Is the distortion caused by anything loose or in the way of the speaker?

Go to Step 3

Go to Step 4

3

Make the necessary repairs to secure the component causing the distortion.

Is the repair complete?

System OK

--

4
  1. Disconnect the rear speakers.
  2. Using an ohmmeter, test the speaker wires for short to ground.

Does the ohmmeter show the specified value?

Go to Step 6

Go to Step 5

5

Repair the short circuit between the rear speaker connector and the radio connector.

Is the repair complete?

System OK

--

6

Substitute a known good speaker for the speaker causing the distortion.

Is the distortion eliminated?

Go to Step 7

Go to Step 8

7

Replace the speaker.

Is the repair complete?

System OK

--

8

Replace the audio system.

Is the repair complete?

System OK

--