Found this spliced wire under the hood, what is it for? - Diesel WK - JeepForum.com

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post #1 of 22 Old 06-08-2012, 04:46 PM Thread Starter
r_unda
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Found this spliced wire under the hood, what is it for? - Diesel WK

About two month ago I bought this 07 WK diesel. I was looking under the hood today and found this cut wire. Anyone knows for what it is for? Anyone has a WK diesel wire diagram?





Everything looks like it is working fine but would like to know what it is for.

Thanks!


My Jeep isn't getting older, it's getting newer part by part

2011 WK2 HEMI 4x4 Overland
2007 WK CRD 4x4 Limited GDE Tuned
1998 TJ SE
1973 CJ5 - YJ OME 2.5" lift, 33" tires
1951 Willys truck
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post #2 of 22 Old 06-08-2012, 05:47 PM
TurboDiesel
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hmmm thats weird
no idea what it would be for
doesnt even look like there is enough slack to make it tight lol

2008 CRD // GDE Eco // DPF delete // 3" intercooler // OME HD // 265 dirtytracs etc.
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post #3 of 22 Old 06-08-2012, 06:06 PM
terrasmak
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Test lead and hook it up

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post #4 of 22 Old 06-08-2012, 06:14 PM
nostaw22
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Call a dealer and ask... They may be able/willing to print you out a diagram if you visit the dealership.

JW

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2007 WK CRD - DashHawk, for towing the XJ
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post #5 of 22 Old 06-08-2012, 07:15 PM
terrasmak
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On mine, it is connected. Hook a test lead to it and see what happens

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post #6 of 22 Old 06-08-2012, 08:03 PM
Tango.
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That is the FCM front-control-module and there was some kind of a recall for them. Maybe the recall was cut the purple wire?

I would NOT hook it back up if it was my vehicle. I would cap the wire off.

I do have the WK diesel wire diagrams. The wire diagrams don't help much as in "what is this wire for".... the are more geared toward "how is this wired" so you can look up a part and see how it is wired. So you might have to look at half the wire diagrams before you got to that wire.

PM me if you are interested in the diagrams.
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post #7 of 22 Old 06-08-2012, 08:04 PM
suzieque
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it seems "VT/WT" color combo is used in many places on the vehicle. can you count the total wires on that plug? is it 16 total wires?

couple options are:
1) passenger door ajar light/switch - try driving away with the passenger side door slightly open, should be some light on the dash that says its open
2) transfer case neutral light - have a look at your manual and figure out how to change the transfer case in neutral, I've never had a need to do this, but I believe a light comes on near the handle.

2008 WK "S" Limited bright metallic silver exterior, light graystone interior, 5 speed W5J400 transmission, June 18/2008 build, C213RE rear differential with 3.73 axle ratio, C200FE front differential with 3.73 axle ratio, 245/60R18 Goodyear Fortera tires (stock summer tires), NV245 transfer case, GT2056V turbo, 3.0L CRD (OM642.980)
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post #8 of 22 Old 06-08-2012, 09:05 PM
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Mine is not cut.
Best I can do is it's connector C104, that looks like position 7 Circuit G6 20VT/GY (Diesel) Oil Pressure Sensor Signal

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post #9 of 22 Old 06-08-2012, 10:01 PM
Tango.
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wookie has it ...

G6 20VT/GY OIL PRESSURE SENSOR SIGNAL
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post #10 of 22 Old 06-08-2012, 11:38 PM
suzieque
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Is violet with a white stripe? Or is it violet with a grey stripe? Looks violet with white stripe to me. Certainly don't want the oil pressure sending unit cut.

2008 WK "S" Limited bright metallic silver exterior, light graystone interior, 5 speed W5J400 transmission, June 18/2008 build, C213RE rear differential with 3.73 axle ratio, C200FE front differential with 3.73 axle ratio, 245/60R18 Goodyear Fortera tires (stock summer tires), NV245 transfer case, GT2056V turbo, 3.0L CRD (OM642.980)
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post #11 of 22 Old 06-08-2012, 11:49 PM Thread Starter
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Quote:
Originally Posted by TangoTango View Post
wookie has it ...

G6 20VT/GY OIL PRESSURE SENSOR SIGNAL
Everything makes sense now.

Long story sorry guys.

Back when I just purchased the WK I had the oil pressure light coming on, I took it to back to the dealer. The WK was there for about 3 weeks and they could not fix the problem. I took the jeep home (they said I could drive it without a problem). I was doing the oil change and noticed that the oil filter cap was broken (The tapered extension and O-ring boss wasn't there). When to the dealer got a new cap and this fixed the problem. You can read about it here: http://www.jeepforum.com/forum/f67/c...07/index3.html

While I was doing the oil change I looked around the engine and noticed that the oil pressure sensor wires were spliced into the wires that are going directly to the computer under the battery. I didn’t think much about it then since I was excited that I fixed the problem by replacing the cap and I was able to finally drive my WK plus the sensor was still working (it was still sending the low pressure signal with the broken cap).

Anyways, I wonder what they bypassed, should I be worry? Everything looks to be working fine.

The shop that worked on it for the oil pressure light was Love Jeep Pre-owned in Corpus Christi. So if you have a Diesel near the Corpus Christi Area don’t take it there. The guys up front are really nice and helpful but I guess their tech don’t know how to work on the diesel WK.

My Jeep isn't getting older, it's getting newer part by part

2011 WK2 HEMI 4x4 Overland
2007 WK CRD 4x4 Limited GDE Tuned
1998 TJ SE
1973 CJ5 - YJ OME 2.5" lift, 33" tires
1951 Willys truck
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post #12 of 22 Old 06-09-2012, 09:38 AM Thread Starter
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Quote:
Originally Posted by suzieque View Post
Is violet with a white stripe? Or is it violet with a grey stripe? Looks violet with white stripe to me. Certainly don't want the oil pressure sending unit cut.
It is violet with a grey stripe

My Jeep isn't getting older, it's getting newer part by part

2011 WK2 HEMI 4x4 Overland
2007 WK CRD 4x4 Limited GDE Tuned
1998 TJ SE
1973 CJ5 - YJ OME 2.5" lift, 33" tires
1951 Willys truck
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post #13 of 22 Old 06-09-2012, 09:51 AM Thread Starter
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Here is what I was talking about. I removed the battery to take a better look at the wires.


Here is the violet with gray wire. One of the oil pressure sensor wires is connected to the violet with gray wire going in to the computer with some type of resistor.


And here are other two spliced wires. One is gray with pink stripe and the other one is bright green. The remaining two wires from the oil pressure sensor are connected to them going into the computer.


I guess they thought that there was something wrong with the oil pressure sensor wire loom. Not crazy but I would have tried other things before starting to cut wires! Maybe like changing the oil and filter!! He would have noticed the broken cap!!

My Jeep isn't getting older, it's getting newer part by part

2011 WK2 HEMI 4x4 Overland
2007 WK CRD 4x4 Limited GDE Tuned
1998 TJ SE
1973 CJ5 - YJ OME 2.5" lift, 33" tires
1951 Willys truck
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post #14 of 22 Old 06-09-2012, 07:25 PM
p3busman
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Would have been nice if they would have used heat shrink splice connectors, to help keep moisture away from the wire.
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post #15 of 22 Old 06-09-2012, 08:14 PM
SSF556
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I would be a little pissed if a Jeep dealer did splicing in my Jeep....

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