Testing Automotive ECUs

Wow Del, you have some neat stuff. You might be able to use a LCD screen and a DPS to convert the signals plus a lifetime of code.

A scope is a great tool. I think of that when I see everyone guessing about an ignition problem. It is best to use a probe rated at least 600V on the primary. Stay away from the secondary. A cheap clamp-on timing light can be modified by adding a BNC connector to coil wires of clamp CT. That will provide #1 reference.