Finally Installed NewEngine, Error codes

[Jmrec100]

I just finished putting in my new - used engine. Getting error codes PO200 and PO200P . Injector problems. Says Injector circuit open. Where do I start? HOw do I check the "injector circuit"?

I have another set of injectors from another old engine I can install. How do I check them before installing them? Is there a resistance check I can do?

[Jmrec100]

I am getting the PO200 error codes which means injectors. I am going to get a noid light and check each injector there. Is there a resistance or another test I can do?

Also, here's the readings I get from my code reader:

Misfire; Ready
Fuel: Ready
CCM: Ready
Cat: Not Ready
HCN: N/A
Evap: Not Ready
2Air: N/A
AC: N/A
O2S: Not Ready
HO2S: Not Ready
EGR: N/A

the O2S and HO2S. How do I check that? Is it related to the injector fails? And the EVAP? Where's that and what is it?

I'm going to pull each injector one by one. If no change then that's the bad one? or ones if more than a single one. I rented the noid lights. After find which one or ones failed, I can check the circuits?

[Jmrec100]

HELP ANYONE !!!
Rather interesting situation. I did exchange for a 2nd YARDPCM. Installed it and curiously same result as the first YARD PCM. The car will start but will not stay running.
It acts like it get a fuel start up injection but not a continual signal to pump fuel? Does this seem possible problem in both Used YARD PCM's? But the car will start and run with my ORIGINAL PCM just with the injector Noid light problem. The #1 and #2 injector circuits fail and the trouble codes P200 show up. When I put in Both YARD PCMs, no NOID light test failure. All injectors light up. And NO trouble codes. But the car won'
t stay running. How weird is this? Wrong programming? Or same bad problem in the 2nd YARD PCM?
Here's what happens now with the 2nd YARD PCM. I turn the key to on, then start position. It cranks, starts and RUNS the engine for about 2 seconds. Then it dies. I turn key completely OFF, it starts, runs and dies in 2 seconds, the same way. Now if I leave it in the on position when it dies and try to start it, It will NOT START. When I turn it to the off (just to the accessories on position and start it, It does the same thing- starts and runs for about 2 seconds and dies. Turn off, go to crank - Starts and runs for 2 seconds, then dies. Seems there is a circuit not closing on start to keep the fuel pump energized. Is that an inductor circuit that is still in the PCM? I have the new PCM coming tomorrow but could there be something else I'm missing. Weird the the ORIGINAL PCM Runs the car but the injectors #1 and #2 fail. I get the trouble codes with the ORIGINAL PCM - P200 and P200P (pending). Bad injector circuit.

I see no check engine light with the 2 YARD PCM's I put in. So probably no trouble codes. I will check now and report back. Help anyone?