This is what I suggest: First, I don't suspect that all coils went bad at the same time, so either we have a wiring issue, or the ECM is bad.
Although we have 12v at each coil, it does no good unless a ground is provided to complete the circuit. The ground comes from the ECM. When that circuit is completed, the ignition coils fire.
I need you to check a couple of other things now. Again, I'm finding it hard to believe that all three ground paths for the coils failed at the same time, but it's possible. So, I am suspecting that either the connector at the ECM is loose, corroded, or damaged in some way. Or the crankshaft position sensor has failed.
If you have a live data scanner, check to see if there is an RPM signal when cranking the engine. If you don't have one but the car has a tachometer, watch to see if it is moving a little when cranking.
If it is, then on the coils, check to see if there is a ground path being provided while the engine is cranking. You will do this on the opposite wire from power. Basically, you are checking to see if there is continuity to ground via the ECM.
If that fails, we need to go to the ECM. The ECM is located behind the right side of the dash. There will be several wires going to it. Inspect the three wires identified in the schematic below. (Pic 1)
When you locate the ECM (see pic 3) there will be 5 connectors on it. We are looking for connector E11, which is approximately center. See pic 2 below. With the battery disconnected, inspect the wiring to that connector, check the connector for damage, and remove that connector and inspect the internal connectors.
If that all checks good, then we need to confirm the wires between the ECM and the coils aren't damaged. You will check them for continuity from end to end.
If the wires are good, the coils have power, the crankshaft position sensor is good, and we are still not getting a ground path from the ECM, chances are it is bad.
Let me know what you find or if you have other questions.
Please let me know how the crankshaft position sensor was checked as well. You indicated checking it in the first post as well as the fuel pressure reading you got. Do this prior to all the work I just listed.
See pics below.
Images (Click to enlarge)
Saturday, January 1st, 2022 AT 10:33 PM