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Old 03-04-2014, 08:32 PM   #1 (permalink)
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Default OBDII Sensor is not receiving power

Hey y'all, need some advice. My check engine light came on this morning, and when I went to plug the reader into the plug, I found that the OBDII has no power. I checked all the fuses on the drivers side dash, but none were blown. What else can cause this? Thanks.
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Old 03-05-2014, 09:28 AM   #2 (permalink)
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Possibly one of the pins has become dislodged/jammed/moved/pushed in. Have a look inside both connectors to check if any pins are abnormal.

Also you can use a multimeter to check if in fact there is no voltage present. Google for an OBD2 pinout to see which pins are power.
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Old 03-05-2014, 10:07 AM   #3 (permalink)
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16 is +12v, 4 & 5 are ground.
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Old 03-05-2014, 12:45 PM   #4 (permalink)
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I'd first grab another Scanner to try on the chance that the plug on the one you used is connector finicky or the unit is simply broken.
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Old 03-05-2014, 08:13 PM   #5 (permalink)
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Thanks for the replies y'all...I wasn't able to take a voltmeter to it today, but I did try another scanner. It too failed to receive power. Upon physically checking the plug, nothing seemed jammed or broken, but tomorrow I'll take the voltmeter, use your info Fordem, and see what it says. I'll keep ya updated. Thanks again!
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Old 03-10-2014, 03:41 AM   #6 (permalink)
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So I managed to a voltmeter to it this past weekend. The two grounds you stated Fordem were fine after using an external 12 source; however, the main unit is still not receiving power. I checked all the fuses again and even briefly disconnected the battery, then reconnected, but nothing seems to work. Does anybody have any other suggestions before I'm forced to take it to the dealer?
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Old 03-10-2014, 04:25 AM   #7 (permalink)
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Here is the wiring diagram in PDF format.
Hope it helps.
Attached Files
File Type: pdf WIRING.pdf (67.2 KB, 86 views)
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Old 03-10-2014, 09:32 PM   #8 (permalink)
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Thanks Pinky, I'll see if I can't track the problem down.
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