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OBD II Fuse?

 
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Old 11-12-2010, 04:56 PM
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OBD II Fuse?

My Scangauge II stopped working the other week. (lost power) I figured there was a bad connection at the cable or the SG unit so I disconneted it. Now I go to plug my tuner in to reflash the pcm and it doesn't power up. So it would seem I lost power or have a bad connection at a pin on the OBD port. The scangauge works fine on another vehicle so its a problem with the port.

Is there a fuse for the ODB II port?

I checked the PCM fuse and its ok. The owners manual is vague.

04' F-250 6.8l
 
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Old 11-12-2010, 05:00 PM
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Yes, the cigarette lighter fuse.
 
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Old 11-12-2010, 05:11 PM
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I'll check the cig lighter fuse.

The shop manual I have says fuse #3 (20A) only problem is I don't have a fuse in location 3. The 20A in the #4 is good.
 
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Old 11-12-2010, 05:25 PM
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Fuse #12, 20 Amp. According to the Owner's Manual.
 
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Old 11-12-2010, 05:36 PM
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Fuse 12 would be the horn.

It should be fuse 3.
Does the power outlet work?
 
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Old 11-12-2010, 05:42 PM
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2002-2004 uses a different fuse panel than other model years. What I posted is correct.
 
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Old 11-12-2010, 05:47 PM
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This is from the service manual for a 2004.
 
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Old 11-12-2010, 05:48 PM
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Ok, I thought it was the same as my 01.
 
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Old 11-12-2010, 06:08 PM
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The service manual I have is older than my truck I have to get one for my 04'.

Fuse #12 was blown and I blew right past it when looking in the manual. I don't use the cig lighter so never had to deal with it before.

Thanks all.
 
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Old 07-30-2018, 11:04 PM
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THIS BEFORE ALL ELSE!

REMOVE ALL PHONE/TABLET CHARGERS AS WELL AS OTHER LIGHTER SOCKET POWERED DEVICES!!! Experience!!!
 
 
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