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 or the audio-navigation 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 or the audio-navigation 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 sounds made by the two vehicles are very similar, go to the FREQUENCY SWEEP TEST .
   • 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.