Quote:
Originally Posted by sverker
When the PCM is not pulling the signal low and if circuit is completed then you'll read 12v on the PCM side. My point is that if circuit is broken then unless PCM has a pull up, which I don't think it would have, then you should not read 12v there. If PCM is pulling the signal low then it reads 0v there for sure.
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i agree, i just went down this path myself/./ i chased a bad pcm wire...dr blue underneath the fuse box