To accomplish this trick, connect your Ford scanner or Flash programming device to the diagnostic link connector (DLC). Leave the ignition key in the OFF position. While the key is off, attempt to connect with the vehicle using your tool's software. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle. Of course, the communication attempt will fail because the key is off! It will then ask you to turn the key off and on again as it again attempts to communicate with the vehicle. After this process completes the software will ask you if you want to make another attempt. Choose no to this query.

You are then asked to choose from a list of vehicles to communicate with. Typically, your choice on this page will be "all other" shown on the top of the list as the rest of the list are non-domestic vehicle models.
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The software will explain that you must provide some numbers from the actual ID label on the old PCM in order for the software to identify the vehicle you intend to communicate with. Use the actual PCM's label shown here if Figure 1 to gain the information you need. As you can see in screen shot shown in Figure 2, there are three sets of data fields you can use. You need only use one of these data fields to get the job done. I use the Tear Tag number because it is the easiest. In our example, we take the YPZ2 shown on the PCM label in figure 1 and type it into the Tear Tag data field as shown in Figure 2. - See more at: http://www.searchautoparts.com/motor....wmWtf27B.dpuf