Sounds like the ECM is having issues, or the wiring around the battery was damaged.
Okay, so the main check I need to do is with the Y/B lead on the fuel pump relay, if it does NOT have power, then the ECU is suspect correct? Because the bike cranks, the ECU does have power, so if its not giving power to the pump relay its most likely bad.This is based on a K6 1000 but it ought to be very similar.
You're right about "ignorantly used a police tahoe to jump the bike while the tahoe was running". Mistakes can be made under the stress of a breakdown and that could be the source of your current problems.
The interlock/turn signal relay is next to the fuses and is different from the fuel pump relay. There ought to be a O/W lead at the fuel pump relay. It should be battery voltage with the ignition and engine stop switches on (it also provides power to the ECM). There should also be a R/Bl lead. It should always be battery voltage. There should be a Y/B from the relay to the ECM. It should be near to battery voltage when the pump is not running and near zero when it is running, including priming. Finally there's a Y/R lead to the pump. It should be zero when the pump is not running and battery voltage when it's running. All voltage checks at the fuel pump relay should be made with the relay connected. The ECM controls the relay via the Y/B lead. You should be able to monitor it when the bike is turned on and see its state change. The ECM is suspect if it has power and is not controlling the fuel pump relay (it should have power if the bike cranks). The only thing that would prevent that is the tip-over switch and I assume that it hasn't been fiddled with.
CHEC means that the cluster isn't receiving data from the ECM. The "-" is likely related to that.
I just completed all the checks. The Y/B lead is 0 when the key is on, and kill switch is in the kill position. Once I turn the kill switch to run, then I get 12V, and it remains at 12V. This is indicating bad ECU correct?" if it does NOT have power, then the ECU is suspect correct?"
That's a misstatement. Y/B gets power from the O/W. It's voltage will be 12 V or a volt or so depending on what the ECM is doing. It will always be high if the ECM isn't working. If the ECM is working, it will be high or low depending on where you are in the prime/run procedure.
All the other leads were as you said they would be.I just completed all the checks. The Y/B lead is 0 when the key is on, and kill switch is in the kill position. Once I turn the kill switch to run, then I get 12V, and it remains at 12V. This is indicating bad ECU correct?