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Old 11-07-2015, 11:50 PM
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Clutch Interlock Switch

Hello everyone, I have a 2006 Jeep Wrangler SE 4cyl 2.4l. I am having some issues with my clutch interlock switch. I bought my jeep back in April 2015, so I am still getting the hang of this jeep. So recently my car was having issues starting with the clutch depressed and I ended finding out that it started without the clutch depressed so I figured that my interlock switch had giving out (since there was a recall). I took my jeep down to the dealership and they changed out my interlock switch and said that someone has bypassed the switch before me, so it is still starting without the clutch depressed. So now I have a new interlock switch, but I am still having issues with my car starting, I never know when it will start with or without the clutch depressed and it has lost power because when I go out of gear towards a stop it idles very low like it wants to stall out and it has stalled out on me once while I was driving. So finally, my question is, how can I undo the bypass that someone did on my jeep?

Thanks!

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Old 11-08-2015, 12:09 AM   #2
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The clutch bypass is just adding or removing a fuse and is covered in the owner's manual

If you don't have yours download a free one from jeep they have them for all 2004 and newer

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Old 11-08-2015, 12:13 AM
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Thanks. Do you happen to know where the fuse is located? I'll look it up though!
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Old 11-08-2015, 02:18 AM   #4
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It's under the hood in the main fuse panel near the battery. It's labeled clutch interlock.
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Old 11-08-2015, 02:28 AM   #5
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It's under the hood in the main fuse panel near the battery. It's labeled clutch interlock.
Unless it changed between the early and late model TJ's, mine was on the fuse box behind the glove box. I have a '98 4 banger with a standard tranny for what it's worth.
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Old 11-08-2015, 02:28 AM   #6
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Your low idle could also be caused by a dirty or clogged idle control valve and dirty throttle body. Also on my 06 SE I have to put some dialeletric grease on my spark plug boots to prevent them from arcing. Or shorting out and causing a misfire of a cylinder. After you sort out the clutch issue I would do a tune up with new spark plugs and wires and I would get the timing belt changed since I'm sure you don't know when it was done last and totally clean the throttle body
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Old 11-08-2015, 02:29 AM   #7
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Unless it changed between the early and late model TJ's, mine was on the fuse box behind the glove box. I have a '98 4 banger with a standard tranny for what it's worth.

Yeah my 06 is under the hood.
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Old 11-08-2015, 09:16 AM   #8
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Hopefully they just bypassed it using the fuse per the user's manual. It's possible they bypassed it by cutting wires. I would have thought the dealer would have helped you remove the fuse it that was all was done.

Go to Jeep.com and download a free owner's manual for directions on the fuse method.
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Old 11-09-2015, 12:35 AM
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Your low idle could also be caused by a dirty or clogged idle control valve and dirty throttle body. Also on my 06 SE I have to put some dialeletric grease on my spark plug boots to prevent them from arcing. Or shorting out and causing a misfire of a cylinder. After you sort out the clutch issue I would do a tune up with new spark plugs and wires and I would get the timing belt changed since I'm sure you don't know when it was done last and totally clean the throttle body
thanks! Yeah I actually did a spark plug switch and clean up today. I definitely feel like it is idling better now. As far as the interlock switch bypass, i checked the fuse box and the fuse for the switch was there so when I removed it my car wouldn't not start at all. So I added a fuse to the clutch override and my car is finally starting on first try without the clutch. I guess I might just be confused still since I was still having issues starting with the clutch with a new interlock switch. Sorry about my rant haha
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Old 11-09-2015, 12:40 AM
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Hopefully they just bypassed it using the fuse per the user's manual. It's possible they bypassed it by cutting wires. I would have thought the dealer would have helped you remove the fuse it that was all was done. Go to Jeep.com and download a free owner's manual for directions on the fuse method.
Yeah, unfortunately there are cut wires on the firewall and I'm not sure if that's where you would go to bypass it. Since the dealer added the switch they told me that it was still starting without clutch and that there was a bigger issue because someone has bypassed it so for 250$ they said they could fix the issue since someone had bypassed it so I'm thinking that someone did wire it because why would the dealer charge me 250$ for a fuse?
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Old 11-09-2015, 12:44 AM
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And now my 4wd engine light came on 🙄
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Old 11-09-2015, 09:18 AM   #12
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Check to see that you didn't bump the transfer case shifter into 4WD. That light just means you are in 4WD.

When someone has hacked the wiring, it makes finding the issue that much harder.
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Old 11-09-2015, 10:11 AM
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Check to see that you didn't bump the transfer case shifter into 4WD. That light just means you are in 4WD. When someone has hacked the wiring, it makes finding the issue that much harder.
I didn't bump it, it instantly came on with the fuse.. But yeah I figured out that someone wired something. Now I just need to find it! Thanks!
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Old 11-09-2015, 10:34 AM   #14
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Now that I think about it, when you put the fuse in to override the safety switch, I think it turns the 4WD light on if it's a non Rubi, even though it's not in 4WD. I always thought that was strange. Maybe others can confirm.
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Old 11-09-2015, 03:41 PM   #15
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Yeah my 06 is under the hood.
True for the '06. I dunno when they switched that location to the PDC under the hood, the clutch interlock switch used to be bypassed by ether inserting a fuse behind the glove box door or moving a cable connector located above the driver's side footwell.

From the '06 manual...

1. Locate the Power Distribution Center (PDC) in the
engine compartment. Refer to “Fuse Panel” in Section 7
of this manual. (See page 305 for more information.)
2. Put a 10 Amp fuse in the PDC cavity (#28) marked as
Clutch Override.
NOTE: A fuse is provided in fuseblock cavity (f19 or
f20) marked as Spare.
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Old 11-09-2015, 04:36 PM   #16
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Now that I think about it, when you put the fuse in to override the safety switch, I think it turns the 4WD light on if it's a non Rubi, even though it's not in 4WD. I always thought that was strange. Maybe others can confirm.
X2. When I install the fuse in the PDC on my '06 LJ the 4WD light does come on. My guess is that, since the owner's manual emphasizes that the bypass is only to be used off road, they included the 4WD light in the circuit as a reminder to remove the fuse after you are done wheeling. Note that there is no mention of the 4WD light coming on in the owner's manual discussion of the clutch override, so I'm not sure why they thought an owner would pick up on that intuitively.

Personally, I have been driving manual transmission vehicles since I was a wee young lad and I am used to starting my jeep without a clutch interlock, so I prefer to have the override on permanently and just live with having the 4WD light on. Since others do it differently, and especially since the interlock is meant as a safety feature, it would have been nice if Chrysler had been more clear with the instructions.
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Old 11-09-2015, 04:44 PM   #17
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Yeah, but that defeats the purpose of the light letting you know that you have it in 4WD.

If you want to defeat it without the light, you can jumper the wires on the switch.

My switch broke in the "start" position and I've left it that way. I prefer it without the interlock as well.
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Old 11-09-2015, 04:52 PM   #18
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The lawyers made the vehicle manufacturers start putting in those silly clutch interlocks back in the 70's or 80's. That was because someone got sued because some idiot didn't know they had to shift into neutral or step down on the clutch to start the engine. And of course someone got sued over a hot cup of coffee being spilled so now coffee cups from fast-food joints now have to say 'Caution coffee is hot'. We're becoming a nation of idiots without sufficient common sense to avoid injuring ourselves unless warnings or interlocks have been provided.

Personally, I think the average Jeep owner has enough common sense to know the transmission has to be in Neutral or that the clutch pedal has to be stepped on before starting the engine. So as far as I'm concerned, that clutch bypass ability doesn't need to be just a temporary thing. My first TJ's clutch interlock was bypassed the first weekend I had it home and I never looked back.
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Old 11-09-2015, 04:59 PM   #19
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Yeah, but that defeats the purpose of the light letting you know that you have it in 4WD.
That's OK, I can tell when the front axle is pulling...
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Old 11-09-2015, 05:01 PM   #20
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The lawyers made the vehicle manufacturers start putting in those silly clutch interlocks back in the 70's or 80's because someone got sued because a some idiot didn't know they had to shift into neutral or step down on the clutch to start the engine. And if course someone got sued over a hot cup of coffee spilling on someone so now coffee cups from fast-food joints now have to say 'Caution coffee is hot'. We're becoming a nation of idiots without sufficient common sense to avoid injuring ourselves unless warnings or interlocks have been provided. Personally, I think the average Jeep owner has enough common sense to know the transmission has to be in Neutral or that the clutch pedal has to be stepped on before starting the engine. So as far as I'm concerned, that clutch bypass ability doesn't need to be just a temporary thing. My first TJ's clutch interlock was bypassed the first weekend I had it home and I never looked back.
not in wranglers. Not that early. The YJ's didn't have them. And the JK's automatically override when in 4lo. So jeep still realizes there's a use for being able to start without the clutch.
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Old 11-09-2015, 05:06 PM   #21
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not in wranglers. Not that early.
The YJs didn't but all Wrangler TJs came with them. And I didn't say all vehicles or Jeeps got clutch interlocks in the 70's or 80's, that's just when it all started.
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Old 11-09-2015, 05:23 PM   #22
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Gotcha, I didn't know how much you knew about YJ's so I thought I'd throw that out there. I skipped the TJ's because my YJ lasted so long, so admittedly don't know to much about them. But I thought I'd throw out an interesting fact.
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Old 11-09-2015, 07:24 PM
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X2. When I install the fuse in the PDC on my '06 LJ the 4WD light does come on. My guess is that, since the owner's manual emphasizes that the bypass is only to be used off road, they included the 4WD light in the circuit as a reminder to remove the fuse after you are done wheeling. Note that there is no mention of the 4WD light coming on in the owner's manual discussion of the clutch override, so I'm not sure why they thought an owner would pick up on that intuitively. Personally, I have been driving manual transmission vehicles since I was a wee young lad and I am used to starting my jeep without a clutch interlock, so I prefer to have the override on permanently and just live with having the 4WD light on. Since others do it differently, and especially since the interlock is meant as a safety feature, it would have been nice if Chrysler had been more clear with the instructions.
That makes so much sense. Thanks for that, I couldn't find anything on why my 4wd light came on but knew it was because of the override. Well I figured out that someone bypassed it by cutting wires (I HAVE NO IDEA WHY) so now that I know that I have a bypassed clutch override without a fuse in the clutch override and I think I may leave it like that since I have the habit of always doing the neutral jiggle. Thanks again.

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