Sound Quality Diagnosis - Sound Balance Test

Sound Quality Diagnosis - Sound Balance Test

Special Tools Required

- Diagnostic CD 07AAZ-SDBA100

Sound Balance Test

Do this test to identify a faulty channel or speaker.

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit.

2. Confirm the bass and treble are set to the center positions.

3. Play track No. 3 (pink noise) at a normal, or slightly higher than normal, volume level.

4. A static type sound should be heard through all speakers.

5. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit of a known-good vehicle.

6. Set the bass and treble to the center positions.

7. Play track No. 3 (pink noise) all the same level as was played in step 3.

8. Compare the sounds made by the two vehicles.
- If the sound does not have as much bass, check the subwoofer and circuit.

- If the sound does not have enough hiss, check the tweeters and their circuits.