Programming the VID Block for a Replacement PCM

A new PCM contains the latest strategy and calibration level for a particular vehicle. However, the VID block is blank and will need programming. There are 2 procedures available. The first is an automatic data transfer from the old PCM to the new PCM, and the second is manual data entry into the new PCM.

Automatic data transfer is carried out if the old PCM is capable of communicating. This is done by the use of a diagnostic tool to retrieve data from the old PCM before removing it from the vehicle. The stored data can then be downloaded to the new PCM after it has been installed.

Manual data entry must be carried out if the old module is damaged or incapable of communicating. Remove and install a new PCM. Using a compatible diagnostic tool, select and carry out the module/parameter programming, referring to the diagnostic tool manufacturer's instruction manual. Make certain that all parameters are included. Failure to properly program tire size in revolutions per mile, (rev/mile equals 63,360 divided by the tire circumference in inches), axle ratio, 4x4/4x2, and/or MSOF/ESOF may result in codes P1635 and P1639. You may be instructed to contact the As-Built Data Center for the information needed to manually update the VID block with the diagnostic tool. Contact the center only if the old PCM cannot be used or the data is corrupt. For Ford and L-M technicians, contact your National Hotline or the Professional Technician Society (PTS) website for As-Built data listed under the Service Publications Index. Non-Ford technicians use the Motorcraft® website at www.motorcraft.com. From the Motorcraft® homepage, use the search function to find the Module Programming or As-Built Data.

For Ford and L-M technicians, check the Programmable Module Installation link on the PTS website for quick Programmable Module data information by vehicle when using the worldwide diagnostic system (WDS) or New Generation STAR (NGS).