Hello, I have the same problem. I put a 2013 engine into my 2015 and it wont crank. It does a bunch of wierd things when I turn the key on, wipers go on, lights flashing, etc...My 2013 1.8 auto needed a new engine. I've replaced the engine only, using the original harness.
After I finished hooking everything back up and filling the oil and coolant, it has a no crank issue.
There is power at the starter and if you jump the solenoid it will crank but not start.
With the key on, all lights on the dash come on, but if I turn the key to crank, the dash and display lose all power and no sounds or cranking happens.
I've checked all fuses and relays. I'm running out of things to check before I start taking everything apart again.
I'm hoping someone here can think of some ideas that I cant think of.
Thanks for any help!
I went underneath and jumped the starter and it turns over as it should. I beleive it is probably a security system / anti theft problem. Did you ever find out what was wrong with your car and how did you fix it?