BMW e92 n55 Won't Start - Any Help Appreciated!

[AndrewHA]

Hi guys.. it's been 2 weeks and I still cannot start my freshly rebuilt N55 engine. I have tried many things, but here are quick facts:


Cranks, no start. (Engine rotates).


There IS spark.


All grounds checked.


Fuses and relays checked.


This is the only code I get, nothing else in ISTA, INPA or Diagnostics scanner I have.
CODE: A738 JBE: Power Supply Interrupted


So, I've noticed that the fuel pump DOES NOT prime when the door is opened or when I try to start the car. I also CANNOT lock and unlock the doors via key or the button.


What's interesting is that I can turn on the fuel pump via EKPS module, turns on and pumps just fine, but if I try to activate via DME in INPA, it does not turn on.


What could cause these two issues? Are they related? How can I troubleshoot further?

[jclausen]

The fuel pump has a fuel pump module if I’m not mistaken

[mandd]

1. Was the eccentric shaft refitted in then Maximum stroke position? If not then the engine will not start and it will not set a fault.

2. Is the cam timing 100% perfect?

Mark.