Inspection Procedure 1: Power Is Not Turned On When The Power Switch Is Turned On: Notes
WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When replacing the ECU, always check that the communication circuit is normal.
Fig 1: Radio And CD Player Power Supply Circuit Diagram