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  #1  
Old 05-01-2011, 08:11 AM
izak izak is offline
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Default obd connection not working?

Hello everyone. Im glad to join and be part of all this, I've been reading your post and have found alot of usefull info. But I wanted to know if anyone has ran into this minor prob. I just bought a 02 ranger 4.0 SOHC 4x4. The problem is that when I connect my obd2 reader into the plug nothing happens, not even a "there are no fault codes" thing. The check engine is not on but because I had just bought the truck I thought I would plug it in and see if there where any stored codes, but Im at a lost, it doesnt communicate with the truck. can you guys shine some light on this or should I take to the dealer?

thanks
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Old 05-01-2011, 08:26 AM
mossyoak03 mossyoak03 is offline
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Default Re: obd connection not working?

Your fuse is blown. Its the one one the side of the dash. Do u have your owner manual? Not sure which number it is
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Old 05-01-2011, 08:36 AM
Turbo Roadster Turbo Roadster is offline
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Default Re: obd connection not working?

Should be number 17 also powers cig lighter.
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Old 05-01-2011, 08:51 AM
mossyoak03 mossyoak03 is offline
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Default Re: obd connection not working?

Ya 17 sounds right its a 20 amp fuse
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  #5  
Old 05-01-2011, 11:54 AM
izak izak is offline
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Default Re: obd connection not working?

YOU GUYS ROCK!!!!!!!!!! that was it. man I will love this forum. Great welcome to the ranger club. I knew this was better then the dakota I Had.
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  #6  
Old 05-01-2011, 12:13 PM
STL STL is offline
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Default Re: obd connection not working?

If you need a owners manual CLICK HERE
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  #7  
Old 05-20-2011, 09:19 AM
izak izak is offline
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Default Re: obd connection not working?

OK so I found out why that slot did not have a fuse in it. After installing about 3 fueses and all of them blowing out after 2-3 days I started to troubleshoot and see why the hell the fuse kept going out. I found the problem, When I shift from park to drive when the shifter passes thru reverse it makes a small click sound then I see that the airbag symbol appears onm the dash, I put in a new fuse and tried it again and it happened, so my questions to everyone here is WHAT THE HELLL? why does my shifter blow out a fuse when I pass thru my reverse on the way dwn to drive.
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  #8  
Old 05-22-2011, 08:44 AM
cowboykilroy cowboykilroy is offline
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Default Re: obd connection not working?

I would start trouble shooting the back-up light system. first check for a burned out bulb, sometimes when they burn out the filament shorts to ground. maybe just replace bulbs or remove bulbs and see if that takes care of it ,if not look for a shorted wire
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Old 05-22-2011, 08:53 AM
01B3000 01B3000 is offline
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Default Re: obd connection not working?

I also remember another member on here had gotten a frayed wire around the gearshift area, everytime he's shift into reverse, or drive, it would short.
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Old 05-22-2011, 09:21 AM
mickblock mickblock is offline
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Default Re: obd connection not working?

Quote:
Originally Posted by 01B3000 View Post
I also remember another member on here had gotten a frayed wire around the gearshift area, everytime he's shift into reverse, or drive, it would short.
Copy that. When you're producing repeatable symptoms based on things like this (which essentially boils down to switch positions) then start diagnosing wire looms for insulation damage.
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  #11  
Old 03-09-2014, 06:47 AM
asilaydying333 asilaydying333 is offline
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Default Re: obd connection not working?

Alright... I have this question similar to the last guy. Except when i even so much as try to stick my fuse in slot 17, as soon as I touch the fuse to those metal contacts it blows and sparks immediately.
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  #12  
Old 03-09-2014, 09:17 PM
Saves Saves is offline
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Default Re: obd connection not working?

any time something like that happens it means there is a short circuit somewhere in that circuit. the circuit is grounding before whatever resistance is supposed to be in the circuit. this causes high current draw and blows the fuse. same thing with OP`s issue.

for OP: if the fuse is blowing exactly when the truck is shifted into reverse you need to trace all circuit paths of that fuse and see if any of its circuits would be affected or used when the truck is shifted, if not its probably something mechanical that is moving when the truck is shifted, that has rubbed through the harness and is grounding that wire.

for post right above mine^ your short circuit is constant. you need a wiring diagram for that circuit and you need to start checking everything on that fuse's circuit.
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  #13  
Old 09-19-2015, 01:36 PM
Doty Doty is offline
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Default Re: obd connection not working?

I have the same type of problem. I have a 2006 2.3lt 5 speed. It won't pass emissions due to the OBD2 port not working. I check the #17 fuse and it is good. I replaced it anyway and still won't work. Here's were it gets confusing. I pulled out my multi meter and tested the port and I have 12v at the top second to right pin, but no power to either the cig liter or aux power. Any suggestions?
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Old 09-19-2015, 03:13 PM
modelageek modelageek is offline
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Default Re: obd connection not working?

Quote:
Originally Posted by Doty View Post
I have the same type of problem. I have a 2006 2.3lt 5 speed. It won't pass emissions due to the OBD2 port not working. I check the #17 fuse and it is good. I replaced it anyway and still won't work. Here's were it gets confusing. I pulled out my multi meter and tested the port and I have 12v at the top second to right pin, but no power to either the cig liter or aux power. Any suggestions?
Doty, try fuse #29
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  #15  
Old 05-25-2016, 06:23 PM
Doty Doty is offline
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Default Re: obd connection not working?

Quote:
Originally Posted by modelageek View Post
Doty, try fuse #29
#29 isn't used on the 2.3L.
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