July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Diagnostic Circuit Schematic
WARNING: This page is about a different car, the 1995 GMC Sonoma and 1995 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Fuel Injection Diagnostic Circuit Schematic (2.2L With PCM)