P1682 - L83 Gen 5 swapped engine.

Hello All,
I little info - I have a 1997 Jeep TJ with a 2016 L83 Gen V engine using a Current Performace Stocker Series Harness.

The engine has ran fine for about a year after the swap. About 2 months ago, started the Jeep, drove about four blocks and the engine shut off. It will crank and not start. It will start with starting fluid. The engine has a new high pressure fuel pump, new MAF sensor, and new camshaft position sensor. I don't think any of these things are the issue. I did think water intrussion may be an issue because the jeep hood is louvered and we had pretty bad rain for a few days. That's just speculation.
The DTCs are:
P0113 Intake Air Temp (permanent)
P1682 Ignition Switch Circuit 2
P2228 Barmetric Pressure Sensor Circuit Low Voltage (permanent)
P0507 Idle Speed High (permanent)

As stated, I am using a Current Performance harness with a tuned e92 ECM from a 2016 Silverado. I tested the harness for continuity, even taking it off of the vehicle and going through the entire loom. The harness has continuity throughout. I swapped an HPI harness (new) onto the engine and the same codes and crank/no start condition persists.

After reinstalling the Current Performance Harness, I went through another diagnostic procedure.
I verified there is fuel at the fuel rail. I tested the fuel for water, and it has clean fuel.
I used a spark plug tester to verify spark at the coils and there is spark.
Also, as a test, I hot wired the fuel pump jumping the relay and the crank/no start persists.
There is 12.65 volts at all fuses both sides, I have backprobed all the relays and they have 12v (12.65) at the feed and device sides. 
I verified that the 12v constant from the starter to the ECM is good. The 12v crank/run supply is good.
In reference to the Current Performace fuse block (attached image)
The ECM Ign 1 - Key on/run has 12v across fuse.
The ECM Ign2 - Key on/run has 12v across fuse
MAF 5v refrence reads 1.4 volts both at the sensor and backprobed at the X2 connector
MAP 5v reference reads 1.4 volts both at the sensor and X2 connector.

At the ECM: All tested at run/ key on. I have attached the Mitchell diagrams for the X connectors at the e92 ECM.
X1 connector has 12v constant, all power outputs are reading 12 volts. This one seems to be working.
At the X2 and X3 connectors there is ground present. At the X2 connector there is sensor voltage present although lower than 5v.
At the X3 connector, I can verify ground at key on, but I get no reading either with a meter or test light at any of the pins.

In short, at pins 66-72 (fuel inj CTRL) on the X3 what signal should I be looking for? Is it internittent only when the crank is spinning and triggering the crank sensor? X3 doesn't seem to be producing any signal,trigger, volt, at key on/run.

I cannot find any fault in the wiring harness or 12v supply and the ground trigger from the X1 to the starter relay is working (it cranks). What other steps should I perform to verify a bad ECM?
To me is seems like the injectors are not firing/ no pulse. I can only try to verify this at the ecm side because the injector harness runs under the intake manifold.
Thanks in advance. Any steps to verify a bad ecm would be appreciated. I am definately chasing my tail on this one.