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Discussion Starter #1
Is it possible to pull CEL codes with wires already plugged into the EEC Test box? Every example I've seen, the box itself has nothing in it.



 

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you have to either jumper the correct wires together or run a ground wire from the Self Test Input to the negative pole on the battery. I tried jumpering the STI to the GND on the Self test and that didnt work. So straight to the negative battery terminal for me works every time.

Give that a try and see what you get.

The STI is the single cable that comes loose from that connector cover.
 

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Discussion Starter #3
That worked, thanks for the help Jowens
 
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