Audio System Symptom Troubleshooting - Audio system information does not display on the center display unit (without navigation system)
  1. Check for continuity between the terminals of the audio unit connector B (20P) according to the table.
    From terminal
    To terminals
    B16 (BLK)
    B6 (RED), B7 (GRN)

Is there continuity between any of the terminals?
YES -
Repair short in the wire(s) between the audio unit and center display unit (replace the appropriate shielded harness).■
NO -
Substitute a known-good center display unit, and recheck. If the symptom/indication goes away, replace the original center display unit. If the symptom is still present, substitute a known-good audio unit, and recheck. If the symptom/indication goes away, replace the original audio unit. ■