Join Date: Apr 2012
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check the codes. if unable to communicate with pcm it sounds like a pcm power or ground issue. on these, the starter signal also runs through the pcm, if i'm not mistaken. there should be a pcm relay and probably 2 fuses. i would look up the wiring diagram for the pcm power and ground paths and check for your 2 powers and probably 3 or so grounds at the pcm. if keyed power is missing, follow the path. check the relay and the 2 or so fuses and power source.
the problem may even be as simple as a bad connection at one of the pcm connectors. if no comm, check that first
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