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Topic: Won't start (Read 3481 times) previous topic - next topic

Re: Won't start

Reply #40 –
It's a generic drawing for that ECM. Not all sensors and connections are used in all applications, but the power pins are right.

Re: Won't start

Reply #41 –
My connections only go to 20 pins in all 3 connectors.

Re: Won't start

Reply #42 –
Quote from: oldguy –
My connections only go to 20 pins in all 3 connectors.
What does your ECM look like the illustration in kgrover's PDF?

That schematic is for an ISB engine. I think your engine is a ISM.

Re: Won't start

Reply #43 –
Yes I believe the ISM is a M11

Re: Won't start

Reply #45 –
Try this one.

Re: Won't start

Reply #47 –
When it gets back.

Re: Won't start

Reply #48 –
This is a schematic for the ISM that is in my U320, the fuel system is a CM570.

Re: Won't start

Reply #49 –
The fuel solenoid works. I'm not getting power to it with the key on. Is the fuel solenoid wired through
the ECM or direct wired.

Re: Won't start

Reply #50 –
Make sure the engine shutoff button at the rear isn't shorted out.

Re: Won't start

Reply #51 –
Check the rear stop button and it seems to be working fine and went its pushed it opens the relay
that feeds the ECU and I checked with a Tone Tracer and it looks like the ECU feeds the fuel solenoid.
It looks like I won't get the ECU until Tuesday. UPS flight problems. It was supposed to be in Point
Roberts today and I guess they don't work on weekend and the place I was to pick it up is closed
Mondays.

Re: Won't start

Reply #52 –
Looks like the fuel supply solenoid could be powered off connector C pin 16 on the ECM. So without the ECM, it wouldn't have power. That is if the second schematic I posted matches your engine.

Re: Won't start

Reply #53 –
Post 45 is the same as mine. I missed it when I tried to find it the other day. I will start looking at
it. Thanks

Re: Won't start

Reply #54 –
I think the M11's and ISM's need to see oil pressure before they will turn on the fuel.

Re: Won't start

Reply #55 –
I put in a preluber so I have oil pressure before I turn the engine over.

Re: Won't start

Reply #56 –
Quote from: oldguy –
I put in a preluber so I have oil pressure before I turn the engine over.
Also looking for rotational speed as I recall. Do you see any RPM to the silverleaf while cranking?

Curious if anything was said about the internal ECM battery?

Re: Won't start

Reply #59 –
Mine is a CUMMINS CELECT PLUS ECM 3408300