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Old 02-01-2013, 12:54 PM   #1
metrocpa1
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help! - part of the wiring harness

Car: 2003 325iT manual trans M54

I'm cleaning my engine and replacing some things; needed to take the intake off to get to everything easier. While doing so, I ripped the wires from one of the plugs (part of the wiring harness). It's mounted on the drivers side rear of the engine, just below the starter. I checked on realoem and I can't even find it...or figure out what this is for.

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two questions I'm hoping someone can help me with:

1) can you tell me what holes of the plug the wires go into? Red, Yellow and Brown. The plug holes are marked 1, 2 and 3 but I don't know the order. Have a photo?

2) If I can't fix it myself, what does this control? Is it really needed?

Trying to avoid the purchase of an entirely new wiring harness if I can avoid it.

Help is appreciated!!!

Scott
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Old 02-18-2013, 01:55 PM   #2
metrocpa1
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Any insight on this? I'm going to have to "guess" or get a whole new wiring harness
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Old 02-18-2013, 02:06 PM   #3
xxxxxbrianxxxxx
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doesit still run if it does then it could be abs or traction control but i hope someone can help you i dont know much on the 325
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Old 02-18-2013, 03:10 PM   #4
dslboomer
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Quote:
Originally Posted by metrocpa1 View Post
2) If I can't fix it myself, what does this control? Is it really needed?

Trying to avoid the purchase of an entirely new wiring harness if I can avoid it.

Help is appreciated!!!

Scott
Ha-ha, You think BMW put a stuff there for no reason?

I think it is a connector for the crank shaft position sensor.
I can not find actual listing by the pin numbers, but normally three wire sensor connector has following scheme:
Power: red: pin 3
Signal: yellow: pin 2
Ground: Brown or black: pin 1

Compare above with camshaft sensor connectors because they are basically same type.

Last edited by dslboomer; 02-18-2013 at 03:10 PM.
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Old 02-18-2013, 03:15 PM   #5
RKiepper
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If its wiring that goes below where the starter is, I'm gonna say its the oil level sensor...

If its not that, then the fuel pressure regulator sensor.
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Old 02-18-2013, 03:16 PM   #6
cyberkaa
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Yes, that's the crank position sensor.

You can repair the harness. You'll need to buy the weather sealed bushing contacts and possibly a new plug housing if you can't extract the old contacts.
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