OK1987LT wrote:Voltage at yellow/black connection 0.8v.
Admittedly, I'm a slave to manufacturers' instructions. I accept that sometimes they can be fallible but my experience is that they are slightly
less fallible than people in general, the paradox being that
people compose the instructions.
![Crying or Very sad](https://2img.net/i/fa/i/smiles/icon_cry.gif)
Then I must contend with
my interpretation of them, all of which could lead to a loop of despair similar to the one described in RickG's signature. Nevertheless, I tend to rely on them anyway.
With that in mind, and in accordance with the attached diagram and the starting sequence description from BMW below it, 12V should be delivered to pin 10 with the ignition switch turned to On and the kill switch lever in its central position.
That is
before the starter button is even pushed and
that is how the ICU gets operating power. Under
those conditions, did you ever get a reading of 12v at the socket of pin #10 in the ICU plug?
I realize that you're likely fed up with all this right now and I actually hope that you're doing something enjoyable—if filtering through all the incoming comments, remarks and advice is not a source of enjoyment already—while the replacement ICU is winging its way toward you, so I won't hold my breath for any reason other than practice for free diving while snorkeling.
![Starter no crank 2v_jet10](https://i.servimg.com/u/f92/19/55/09/79/2v_jet10.png)
![Starter no crank Scree259](https://i.servimg.com/u/f92/19/55/09/79/scree259.png)