Rlowman2016

I have a code for a p0354 coil b primary/ secondary circuit. I replaced coil pack plugs wires same code. I used my test light at the 4 wire connector at the coil and the red/ light blue wire for cylinders 1 and 5 had a faint green light indicating that it's barely grounded. This happened with the key in my bedroom and ignition off. If I unhook the wire harness from the computer it shows its no longer grounded. I narrowed it to the computer or harness. Can y'all help me determine witch of the 2 it is?

Rlowman2016

So it's the ecm if I get the computer ignition cylinder and Pat's key do I still need to reprogram the computer even though I got the Pat's key that's programed for it?