Another po683 question

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Sep 29, 2021 | 06:23 PM

mattb77

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Another po683 question

Have the po683 code put a volt meter on it and have no communication from PCM to the gpcm. Curious what I should do. Only thing I can think of is to splice some new wires from PCM to GPCM
thanks
Matt

Sep 29, 2021 | 07:17 PM

bismic

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Do you mind describing the test you did and on what color wire(s), and/or connector numbers and pin numbers?

Oct 3, 2021 | 03:24 PM

mattb77

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Process

This was sent to me by my mechanic. Ford tech for over 20 years.

Oct 3, 2021 | 04:00 PM

bismic

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In that "write-up" he states that it assumes that the GPCM is working correctly. That may or may not be the case. Some GPCMs do fail.

Oct 3, 2021 | 09:20 PM

mattb77

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Right but if there is no communication from the pcm, replacing the gpcm doesn’t help. There is the problem, when I asked if I should swap the gpcm I was basically told I could throw my money away if I want to. I don’t mind swapping the part it is only $100 and will take 20 min but if that’s not the problem what’s the point. Was wondering if anyone else went through this.