I don't agree at all that LP
A isn't auditing. Of course it's auditing, and there's no reason that I can see to call it anything else. If the contention is that it's a form of inspection, then
all auditing is a form of inspection, so the distinction is moot.
The
FMEA is not a document, it's a process. The document is a
record of the process. If, as Howard says, the idea of LPA comes up as a possible form of action during the FMEA process, then it should rightly be a part of the record.
I think this is correct, but for the wrong reason. If LPA does indeed come up during the FMEA process and is incorporated as a "recommended action" as a result, there should be a corresponding entry on the control plan.
In answer to the OP's question, you should start with
APQP (including FMEA) and work forward, which might result in using LPA as a control. If you're starting with LPA and working backwards to the FMEA, something's wrong. I understand that FMEA documents are to be considered dynamic, but if you understand the purpose of the FMEA process, you won't have much trouble with making connections between FMEA, the control plan, and any other types of process controls you might want to use. Think in terms of a
continuum where there are no barriers or endpoints until you have a conforming product and a happy customer. The control plan doesn't start when the FMEA process ends; they're both a part of a larger process, as is LPA if you choose to (or have to) use it.