Hi Guys,
Thanks for replies.
Lo Fi
Have you given the ECU some really good earths? If you can see 12v on the feed, that's the other place to check.
So, to check the earths .....
I guess I should just trace the existing earths from the ECU / D37 connector plug and make sure they are connected to chassis properly?
Is there a way of making sure or would it be a good idea to run a fresh stand alone wire from earth side of ECU D37 plug to a solid earth on chassis to check?
Setting up a test rig, I am afraid i'll fry the ECU! So to set up a rig do I simply.......
Just give it a 12v feed in the normal place as per D37 diagram ie blue/white wire space from Nigels original installation instructions (see attached).
I guess I would also need an earth, so I should connect an earth to one of the Ground connector on the D37.
If this is correct what lights should I see? I guess I should just plug into PC and see if it will connect!
Sorry if this comes across as simplistic, but as I said, I'm very much a novice.
Fridge Freezer:
Did it run on EFI before you switched to MS or is this a fresh install?
Yes it ran on efi before. The only difference is new plenum with later hotwire injectors. I got this from Nigle (Hybrid from hell)
- Is the ECU known good, programmed with the right settings (base map), and where did you get it from (just so we know what we're dealing with)
I got this from Nigle (Hybrid from hell)
- Does the ECU communicate with the laptop?
No. That is part of the problem. I can't see the ECU settings. It appeared to connect to the laptop the only single time when it started, but I only got as far as looking at the dashboard guages and the first setting 'engine constants' which was strangely blank. Then the engine stopped. I thought I had done something wrong so closed it down, hoping that the next time I got it started I would check it again, but alas, it has not started again so I cannot check it. As mentioned a single light flashes once when cranking but computer does not connect up.
- Does the fuel pump run?
Yes fuel pump runs. It primes and stops with ignition and then runs constantly when cranking. There does appear to be fuel getting to engine as plugs are wet.
FYI I did not attempt to connect into the existing system myself, it was done as a favour by friends, friend who is an automotive electrician. Unfortunately, he is not in a position to be able to check it!
Thank you both for your help. I hope my comments explain further. To be sake, I will wait for your reply LoFi as I dont want to fry ECU or do something stupid.
Thanks, D
Megasquirt D37 ECU Connection Plug Wiring.docx