@Ricksza @Hot Cruiser @sfair
(and anyone else who chimed in)
OK, I got to yesterday. Here is the current state.
Battery Voltage:
Key off: 12.93v
Key on: 12.65v
Key on after 1 min: 12.21v
Key on after 5 min: 12.18v
ECU Ground Test:
Pin 22 BK/BR : Continuity to Battery Negative Terminal.
Pin 26 BK/YL : Continuity to Battery Negative Terminal.
Pin 42 BK/YL : Continuity to Battery Negative Terminal.
Pin 43 BK/YL : Continuity to Battery Negative Terminal.
ECU Power Test:
(I forgot to write down the value after the decimal. I will do these again tonight to get the values. It was nominally battery voltage though.)
I notice this test is looking for 12.8 volts or
HIGHER.
Key OFF
Pin 12 BR/W : 0v to Battery Negative Terminal.
Pin 27 W/BK : 12.??v to Battery Negative Terminal.
Key ON
Pin 12 BR/W : 12.?? to Battery Negative Terminal.
Pin 27 W/BK : 12.?? to Battery Negative Terminal.
Both of those ECU tests proved difficult. I was getting confusing readings sometimes. I thought I was getting an open on Pin 22 for a while. I probably did the test 10 or more times, being careful to "feel" the contact of the probe. I will redo them tonight again, especially because it is an intermittent issue I am dealing with. I kept getting ~0.29 volts(fluctuating) on pins 12 and 27 in the beginning. I "assume" I had a bad connection but it felt like solid contact with the probe. In any case i got a better contact and a good reading.
VIDEO of the symptom in action
I grabbed a short video of me turning the key on and off again a number of times. Watch the FI light on the gauge cluster in the video to see that sometimes it lights up and some times not. It lights up three of the thirteen times I turn on the key.
Next Steps
Re-Do ECU Power and ground and write down the readings.
ECU Relay Check
Fuel Pump Relay Check
Find and check the main power and ground connections.
How many ground points are on this bike? Where are they?
I am not sure yet what I should be thinking or suspecting.
I was not moving anything (wiring, plugs, etc) when I made the video.
Do I swap the ECU to test?
Do I have a bad ground?
Do I have a bad battery positive connection between the battery and the fuse box/main power in?
Can the instrument cluster be a factor?
Battery problem?
Other?