IATF IMPLEMENTATION Checklist

Practically speaking, no-one can give you what you are looking for (or think you should have). That checklist doesn't exist. Since YOUR internal audits are done by YOUR people, (you) and performed on YOUR organization's processes, requirements etc., nobody is going to have a checklist which includes those things. It's like going to the grocery store. What you want to buy, may be generically "butter", "eggs", "milk" etc., except what you might want is going to be very different to what I buy.

The best advice/answer anyone can give you here is to create your own. It's not the checklist which is important, it's the process of planning and studying the processes, requirements etc which help create the checklist which is more important to an effective internal audit.