Sound Balance Test

Do this test to identify a faulty channel or speaker.

1. Insert the audio Diagnostic CD (07AAZ-SDBA100) into the audio-navigation unit or 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 (07AAZ-SDBA100) into the audio-navigation unit or the audio unit of a known-good vehicle

6. Set the bass and treble to the center position

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 sounds made by the two vehicles are very similar, go to Frequency Sweep Test.
If the sound does not have as much bass, check the subwoofer and its circuit.
If the sound does not have enough hiss, check the tweeters and their circuits.