Automatic oil transfer issue

[spinkick63]

Have you done a drag test on that plug pin socket?

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Ok, did a little research. I assume you are referring to the friction from plug to pin. I didn't know it had a name.
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I'm not quite sure how I would do that in this case. That particular plug has 26 reasonably condensed plugs. They appear to be water-proof/resistant, so I'm not sure how I would pull a given wire from the plug. I'm open to ideas!
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I actually did have that issue on the bullet connector (blue wire) to the emergency switch. It was so loose I'm amazed the vibration of the engine running didn't knock it loose. Found that when I was tracing, checking, and confirming grounds/continuity/resistance/etc.

[panasonic]

You don't have to pull the wire/socket from the plug assembly. Just find a suitable piece of wire, paper clip, needle, ect that fits into the sockets of the plug without to much force( dont want to spread sockets to much) AND simply compare how it feels to slide the chosen tool into each socket in the plug and they should all feel the same....

I asked if you back probed that particular wire you are interested in because I have seen sockets or pins push back in plugs when connected and look/test fine when unplugged. Yes the plug is crowded with wires and have rubber weather proofing grommets but with a Tpin you can generally back probe the plug without causing any damage.

I hope you figure it out.

[spinkick63]

I tested the resistance from ECU pin to engine ground on pins 4/5 (blue/red), 17 (blue/white), and 18 (blue/green). Each measured less than 1 ohm. Of course, that was with the oil sensor assembly floats in the appropriate positions.

I sure hope there's one more something that I have missed because it seems ECU is all that is left. That's only about a $1400 "test".

You don't have to pull the wire/socket from the plug assembly. Just find a suitable piece of wire, paper clip, needle, ect that fits into the sockets of the plug without to much force( dont want to spread sockets to much) AND simply compare how it feels to slide the chosen tool into each socket in the plug and they should all feel the same....

I unintentionally did this with earlier tests so I could use alligator clips at the pins. I used push pin that fit without having to force it in.

Thanks again for your input

[spinkick63]

... simply compare how it feels to slide the chosen tool into each socket in the plug and they should all feel the same....

Went ahead and did the drag test on all 26 sockets in the plug. All were consistent in friction.