Audio System Symptom Troubleshooting - Audio unit power switch will not turn on (No information display and no sound)
  1. Measure the voltage between the audio unit connector A (24P) terminal No. 12 and body ground.
Is there less than 0.1 V?
YES -
  • With navigation system: Go to Step 11 .
  • Without navigation system: Substitute a known-good audio unit, and recheck. If the symptom/indication goes away, replace the original audio unit. ■
NO -
Repair open in the wire between the audio unit connector A (24P) terminal No. 12 and body ground (G401). ■
  1. Disconnect audio/navigation switch panel 24P connector.
  1. Turn the ignition switch to ON (II).