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Can anyone tell me where this wire goes.

1136 Views 12 Replies 7 Participants Last post by  Tomvw
Can anyone tell me where this wire goes. This is a picture of the coil pack wires of a 2001 Passat with 1.8L Turbo. I have been working on a crank but no start condition and I noticed that this wire is unattached. It is brown and on the wires going to the 1st coil pack I believe on the number one cylinder. I don't have a schematic yet so I can't look it up. Auto part Engine Vehicle Car Hood
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I thought is was a ground but when I went to connect it to the valve cover I got sparks so I was a little unsure about it since I don't have a schematic.
I just want to be sure I went out and took a couple more pictures at different angles. I circled the ground connections already in place in green and the one in question in red Auto part Engine Vehicle Fuel line Automotive engine part
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The brown wire is only on the coil pack cable for the 1st plug it is not on any other of the coil pack harnesses. I unplug the cable from the harness on both ends and ohm it out. I don't know what pin it was either 1 or 4 but it had about 40 meg ohm of resistance between the wire which is brown and the pin. the wire is single and not in with the other wires. I have been looking at u tube videos trying to see if any other 1.8t have a similar wire. It is definitely part of the cable assembly and it looks like it is original equipment.
I figured it out the wire is connected to the red wire in the harness I cut the casing and looked mystery solved for that but now I still have to figure out why it will crank but not start
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