7.3 help

Fabrik8 said:
It's possible that having the scan tool plugged in was reducing electrical noise just enough to make the faulty CPS get picked up properly by the ECM. Hard to say without putting an oscilloscope on those lines, but it doesn't matter because the CPS was faulty and needed replacing.
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I doubt it. The grounds, vref and comm circuits are completely separate and don't even get near one another from a brief look.

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It wasnt the cps i just replaced it. I gave the one i took out to a friend and it fixed his problem. Im not sure why scan seemed to make it work since it was an icp plug
 
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