2005 E40 ECM Pinout

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Dec 16, 2019 | 09:14 AM

MTBSully

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Melting Slicks

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From: Portsmouth, NH

2005 E40 ECM Pinout

Anyone have a pinout for the E40 ECM on my 2005 corvette? Specifically the C3 gray plug on the top? I pinned the ECU for flex fuel and want to double check my work as I started the car last night and dash is reading "oil pressure XXX". Want to double check that is is not affected by that connector.

Dec 16, 2019 | 10:45 AM

Dutch08

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From: Atlanta - - - - - Save the manuals

Dec 16, 2019 | 01:24 PM

4SUMERZ

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From: Eastern

I only have the 2006/2007Service manual, and thus I'm not sure if the pinouts are the same. I have attached the 2007 ECM connectors/pinouts. The ECM C2 connectors shows it as GY, so I've attached it. You can have a look to see if it is like yours.

Attached Images

2007 ECM connectors.pdf (161.4 KB, 2135 views)

Dec 16, 2019 | 03:05 PM

schpenxel

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St. Jude Donor '15

2006/7 aren't the same ECM.

Dec 16, 2019 | 03:07 PM

schpenxel

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St. Jude Donor '15

This is from a GTO but should be close if not the same.

Last edited by schpenxel; Dec 16, 2019 at 03:08 PM.

Dec 17, 2019 | 08:13 AM

MTBSully

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Melting Slicks

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From: Portsmouth, NH

Quote:

Originally Posted by schpenxel

This is from a GTO but should be close if not the same.

Hmm, not sure if thats accurate for the vettes. Mine seems to have different pin locations

Dec 17, 2019 | 08:25 AM

schpenxel

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St. Jude Donor '15

Quote:

Originally Posted by MTBSully

Hmm, not sure if thats accurate for the vettes. Mine seems to have different pin locations

Ah, crap. Ok, I'll try to pull it off the GM service software I have, let me see if I can find it there

Last edited by schpenxel; Dec 17, 2019 at 08:27 AM.

Dec 17, 2019 | 08:35 AM

schpenxel

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St. Jude Donor '15

Here ya go... this one is straight from GM's service software.

Attached Images

2005 C6 E40 ECM Connector Views.pdf (433.5 KB, 3583 views)

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Dec 17, 2019 | 06:09 PM

MTBSully

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Melting Slicks

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From: Portsmouth, NH

Quote:

Originally Posted by schpenxel

Here ya go... this one is straight from GM's service software.

You da man. That matches up perfectly with the pic I have of the pins in mine. Looks like oil pressure signal isnt on that connector. I wonder if the sensor just went bad.

Thanks!

Dec 17, 2019 | 07:37 PM

#10

4SUMERZ

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It's possible that the oil pressure sensor went bad. A thread on here yesterday asking how to get to it to replace.
https://www.corvetteforum.com/forums...re-sender.html

Dec 17, 2019 | 09:29 PM

#11

MTBSully

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Quote:

Originally Posted by 4SUMERZ

It's possible that the oil pressure sensor went bad. A thread on here yesterday asking how to get to it to replace.
https://www.corvetteforum.com/forums...re-sender.html

Yeah I suppose its possible. Car hasnt been started since October. I verified oil pressure at the turbo oil feed, and the lifters seemed very quiet, so I am sure it has pressure. Just seems strange it would go bad suddenly

Dec 18, 2019 | 09:07 AM

#12

schpenxel

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St. Jude Donor '15

Happens all the time. They’re cheap, I’d just replace it and see what happens. Those things fail pretty often

Dec 18, 2019 | 06:05 PM

#13

MTBSully

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Quote:

Originally Posted by schpenxel

Happens all the time. They’re cheap, I’d just replace it and see what happens. Those things fail pretty often

Yeah I'll give it a shot. Always alarming to see no oil pressure on the dash haha

Dec 18, 2019 | 11:35 PM

#14

schpenxel

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St. Jude Donor '15

Ah. Yeah they usually fail at max pressure so hopefully yours is just an odd case.

Dec 19, 2019 | 11:12 AM

#15

MTBSully

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Melting Slicks

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From: Portsmouth, NH

Quote:

Originally Posted by schpenxel

Ah. Yeah they usually fail at max pressure so hopefully yours is just an odd case.

Mine says "oil pressure XXX" which i believe means there is no signal at all from the sensor. Same thing happened when i did my cam swap on my z06 a few years ago and bumped the sensor off re-installing my intake manifold. If there really was no oil pressure Im sure it would read "oil pressure 0psi" and I would have a very loud valvetrain haha

Dec 20, 2019 | 10:22 AM

#16

schpenxel

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St. Jude Donor '15

Quote:

Originally Posted by MTBSully

Ah, yeah that does sound like it's not connected at all then.. still not a bad idea to try a sensor while you're at it but yeah I'm sure you have pressure or you'd know it by now

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