VID Block & As Built Data For A Replacement PCM

A new PCM will contain latest strategy and calibration level for a particular vehicle. However, VID block will be blank and will need programming. Two procedures are available: Automatic Data Transfer from old PCM to new PCM and As Built Data or Manual Data Entry into new PCM:

Automatic Data Transfer - performed if old PCM is capable of communicating. This is done by the use of a scan tool to retrieve data from old PCM before removing it from vehicle. Stored data can now be downloaded to new PCM after it has been replaced.
As Built Data Or Manual Data Entry - must be performed if PCM is damaged and/or incapable of communicating. Remove and replace old PCM. See POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article. Using scan tool, select and execute MODULE/PARAMETER REPROGRAMMING, referring to manufacturer user manual.

Make certain that all parameters are included:

Failure to properly program tire size in revolutions per mile, (rev/mile = 63,360 divided by the tire circumference in inches) axle ratio, axle size, ABS system (4WBS or RWABS) 4x4/4x2, and/or manual/electronic shift on the fly (MSOF/ESOF) may result in DTCs P1635, P1639.
You will need As Built Data to perform this procedure. If you are unable to obtain As Built Data from Mazda's Electronic Service Information website, you will need to contact Mazda Technical Assistance Hotline.