July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

REPLACE ECM
1. Clear DTC.
2. Turn the ignition switch OFF.
3. Disconnect the battery negative terminal and wait for 1 minutes.
4. Connect the battery negative terminal.
5. Turn the ignition switch ON.
6. Check DTC.
  OK: P0604 is not present.
NG: REPLACE ECM

OK: CHECK FOR INTERMITTENT PROBLEMS