Deciphering M20B25 engine harness plug... anyone with one look inside.

[Erick]

I am currently beyond lost on this one. I'm trying to find what one of these connectors are for in the harness but I cannot touch on what it is.

It's one of the generic connectors for things such as TPS, Crank position sensor, spark plug wire signal, So on and so forth.

The connector I can't seem to figure out what it's for is close to the diagnostic port and alternator wires.... so it's obviously plugged in to something on the driver's side towards the front of the motor.

I already labeled the TPS, Crank position sensor, Spark plug signal wire, AFM, Idle Air Control, and EGT. Trick is, there's one more left.

Anyone knows what it is? Or perhaps can take a look in their car to check it out? I have a feeling is stupid obvious, but the lack of a M20B25 at the junkyard or nearby is keeping me stumped on this one.

[jlevie]

The tow in that area that you don't mention are the evap control valve (two contacts) and the oil level sensor (three contacts).

[Erick]

That's the oil level plug? Man, I couldnt remember it having a plug like that. And sorry, I was dead tired when I wrote that. When I wrote "EGT" I meant Evap.

No wonder I passed out without anything waking me up for 12 hours this night :p

[Fidhle007]

There's also a three prong pulse sensor wire up there that would plug in next to the crank sensor. It has that signal wire that wraps around one of your plug wires...

[Erick]

Yup, got that one already.

[Dyno4mance]

The last one plugs into the evap vaccume solonoid valve under the tps switch