Test Tone Mode (TT)
Purpose: The "TT" test tone mode is available to check speaker function. Entering test tone mode automatically starts alternating high and low tones with the left front speaker (set). Pressing the TUNE rocker button selects each of the other speakers (sets). Refer to "Entering On-Board Diagnostics (OBD) Mode - AM/FM Cassette/CD or AM/FM Cassette/6 Disc CD" to enter test tone mode. For AM/FM Cassette/CD or 6 Disc CDTest Tone Mode:
If you do not hear the test tones, increase the volume using the volume knob. If either of the test tones is not heard from a particular speaker, refer to "Chart 3 - No Sound/Distorted Sound From Some Speakers." Chart 3 - No Sound/Distorted Sound From Speakers