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 Post subject: New Guy - Glow Plug Code
PostPosted: Tue Feb 06, 2018 10:12 am 
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Joined: Tue Feb 06, 2018 10:03 am
Posts: 53
I recently picked up a 2006 Liberty CRD and also own a 2007 gas version. The CRD is in great shape and Im working out some bugs. I had a # 3 glow plug fault code. I replaced them all yesterday with new ones with the same voltage. Now its throwing a 0683 code for Glow Plugs. Im on the hunt for some tips or what the most obvious is.

The Jeep did come with a Green Diesel ECM and TCM mod with EGR delete, not that makes any difference but it sure is a fun snotty little unit.

Thanks

Dan


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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Tue Feb 06, 2018 11:08 am 
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Joined: Mon Mar 24, 2008 10:26 pm
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Location: West Coast, Canada
Check the resistance of the glow plug again. If it has ever been dropped on its way to you, it may be faulty.

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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Tue Feb 06, 2018 1:34 pm 
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Location: Central GA
P0683 - Glow Plug Control Module to PCM Communication Circuit
Code says it is a communication error!
Check all your connections and wiring closely. Check the connection on the Glow Plug Module itself.
The GP module is located right behind the battery, it is not in the Power Distribution Center where the other relays are located.

Image

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Last edited by WWDiesel on Tue Apr 24, 2018 1:48 pm, edited 1 time in total.

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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Tue Feb 13, 2018 1:38 pm 
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Joined: Tue Feb 06, 2018 10:03 am
Posts: 53
Thanks for the tips, I will check those.


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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Tue Apr 24, 2018 11:29 am 
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Joined: Tue Feb 06, 2018 10:03 am
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I tried a new glow plug module and that didnt help. This weekend the weather was nice enough that I put a new glow plug harness in. While I was in there I put on Ohm meter on each plug and they all were around 1.1 - 1.5.

I used my scan tool to reset the computer but the code came back right away. Frustrated I drove it on a couple small errands that evening, but the next morning when I started it, the check engine went out and hasnt come back.

Uh ok...whatever.


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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Sun Jul 08, 2018 1:09 am 
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Joined: Thu Jan 07, 2016 2:19 pm
Posts: 194
Location: Shelton, WA
danruesch wrote:
I tried a new glow plug module and that didnt help. This weekend the weather was nice enough that I put a new glow plug harness in. While I was in there I put on Ohm meter on each plug and they all were around 1.1 - 1.5.

I used my scan tool to reset the computer but the code came back right away. Frustrated I drove it on a couple small errands that evening, but the next morning when I started it, the check engine went out and hasnt come back.

Uh ok...whatever.


Huh, I'm still working on P0672 #2 glow plug CEL as well. I've swapped the GP Relay, tested the resistance on the GP (1.1ohm), tested the PWM signal on the harness end to GP #2 and all is well. So the GP may be "broken lite" per WolverineFW in that it sorta works sometimes. Seems the CEL light stays off longer after reset sometimes ?? Also I see the PWM signal stays on to the GPs most likely until warm up like my dodge 5.9ltr.

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 Post subject: Re: New Guy - Glow Plug Code
PostPosted: Fri Jul 13, 2018 9:22 am 
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Joined: Sat Apr 15, 2017 3:48 am
Posts: 462
Location: White River in the Bush South Africa
danruesch wrote:
I tried a new glow plug module and that didnt help. This weekend the weather was nice enough that I put a new glow plug harness in. While I was in there I put on Ohm meter on each plug and they all were around 1.1 - 1.5.

I used my scan tool to reset the computer but the code came back right away. Frustrated I drove it on a couple small errands that evening, but the next morning when I started it, the check engine went out and hasnt come back.

Uh ok...whatever.


Some of the codes will get reset only after a few Run/Stop runs after you have fixed the problem so that is probably what happened. :wink:

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