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Originally Posted by turboswede
Thanks for the reply. I'll check the schematic to see how the on-board one is wired. Also, I can clear the code and it works fine for a few days although the last time it also turned on the check engine light.
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The shematic is the same ..
The sw completes the led circuit and starts the code initiation to the module . The mod then sends back the flash to the neg side of the led through the designated pin /connector
http://members.aol.com/ajdalton7/ledtool.jpg