no spark
 

if you can solve this, you're better the three shops that looked at it with no idea on how to fix. 2015 xg750 no spark, no power to the fuel pump fuse, cannot access the ECM though the speedo, when you try to go into diagnostic mode the speedo goes right back to milage, new ECM was installed, no power or signal to the coil all wires tested only wire that show any thing is the number one wire shows ground, all lights and starter work engine good 150 psi each cylinder. what did they not think of, or what do I test next.

If you have power to the lights etc when you turn the key on, but fuel pump doesn't start ( you can't hear it ) and nothing happens when you push the starter button, then I would think there is something wrong with the kill switch circuit or one of the safety switches, clutch engaged, side stand switch. Something like that could/would case your symptoms.

turns over fine

Give me some time to think about this. The 2015 did not display Codes in speedo. Have doctors appointments today but I will dig the manual out and take a look.
I question any shop that jumps to replacing ECM as a trouble shooting step.
3 2015's parked here now one mine and two of a friends None have ever displayed this issue.

The 750 Street is an odd ball to most dealers and you are lucky if an Indy even heard of one.
Some dealerships do not even have the locking tools to work on them.
Have you or anyone else check the Crank sensor ?

Pull both plugs. ground the them try to start engine check for any spark.


https://cimg4.ibsrv.net/gimg/www.hdf...5fb6148877.jpg

did not understand your last sentence. (Pull both plugs. ground the them try to start engine check for any spark.)

Your spark plugs. They could be getting power but out of time.
No spark can be caused by a few things.
Also when installing plugs in a Street if you are not careful and use a Good plug socket that hold the spark plug you can crush the gap when installing it.
I have the 2015 service manual and some experience with the Street model. Will try yo help you figure this out. It is hard on line but willing to try.

no spark, no power to any of the coil wires and no power to the fuel pump fuse if I jump it to a live circuit the pump will come on but still no spark.
plugs have been out and grounded the whole time.

You need to check the Kill switch on right grip. Has any work been done one the bars. The bike will still turn over with kill switch in shut down But it will not start.
Also Pull each fuse and inspect. Not uncommon to have a corroded connection .

Don't know if it applies to the Street bikes, but in general if the ECM does not detect compression in the cylinder (as with the spark plug out) it won't send power to the plug wires. You need to use an inline spark tester.