P1121 causes and cures

I replaced the water valve 6 months ago and finally got all the air out. Had a P1121 code then also.
I have a P1121 code again = along with a few others that do not seem to be related. My FFD indicates that the "tank outlet temperature" is 113 and does not change each time I redo the tests. I have done cold and hot tests. The coolant temp appears to get to ~180°F fairly fast from cold (40-50°F). What it should be relative to the coolant temperature. I exercised water valve #3 and hear it running. I do not hear 4 or 5 when I turn them on.
Questions:
1. Is the "Tank" referred to = the thermos?
2. If so does a constant 113 indicate a problem with the sensor?
3. Would a problem with the sensor trigger a P1121, all other things being nominal?
3. Where can I find a verbose description of "tank outlet temperature", "water valve #3", "water valve #4", water valve #5", etc.

 

Yeah, been there saw that, have it saved on my 'puter.. I think I have read every post on 5 sites related to P1121. Everything seems to keep changing. I reset all the DTCs (I think) and I am waiting for another round. The C1242 is a mystery. I reset some relays and swapped a couple. I can't understand how the IG2 has an open connection if the car starts and runs fine = since that is a direct line to the injectors. The other codes seem to be related to IG2 also. If I get 113 for a tank temp again, it has to be that sensor, right? Though I think there is actually another code (maybe P1116) specifically for that, but I have never seen that. Maybe that is just for open or short. I should get a tank temp close to the cooler temp, correct? I don't know what failure mode would yield 113.
Is there a way to run the valve with Techstream? There are 3 valves (3, 4, 5), but I have no idea what they are for.

 

I do have multiple printed pages and saved files.
Here is my files.
I have activated all 3 water flow valves. I can hear #3 when I do it. But have no idea about #4 or #5. Do they actually exist? What/where are they? HOWEVER, after I activate them, I have no idea how to observe the results, like temp changes, etc. So it is a little difficult to run through the workup. But I am also chasing C1242. The reason I reset everything is because it seemed like every time I looked at it, things changed for no apparent reason.

I would like to find a tutorial on how to use TS as it is still mostly a mystery to me. Even saving results doesn't work for me most of the time.
thanks for your help

 

New scan. This only showed up as a P1121. The others are known. No C1242.
tank temp is 55. Sounds like the valve isn't working, but that is really low, like about ambient.
What do you think.

 

I just did that TS test. C1242 did not show this time, so I am not trying to work that now.
Maybe it needs more time to come back.
Maybe because I swapped those 2 relays out.

I have no idea how to access the connectors on the ECM. I assume it is the one located behind the glove box.
I have no Idea, other than draining the coolant and taking the system apart, how to check for blockage.

I just saw something that indicated that the 3 water valves listed #3, #4, #5, on the detail DTC are the same unit, just different positions.
If so, what does turning them on/off do? Is it a step function or is it separate?

Does that scan tell you anything?
Why is the coolant temp so low?
What position is the valve in if the voltage shows 4.5V? == workup indicates it is #5 at that voltage. Does that mean it is trying to connect to the tank?
If that is correct, then the valve isn't working or there is a clog.
Previously, when I turned #3 on/off I heard it operate. I heard nothing when I turned #4, or #5 on/off.