Audio System Symptom Troubleshooting - Poor AM or FM radio reception or interference (with premium audio system)
  1. Measure the voltage between the AM/FM antenna 3P connector terminal No. 3 and body ground.
Is there battery voltage?
YES -
Go to Step 15 .
NO -
Go to Step 10 .
  1. Turn the ignition switch to LOCK (0).
  1. Remove the audio unit.
  1. Disconnect audio unit connector E (5P).