Ford 2003 Mustang Workshop Manual page 13

NOTE: Powertrain calibration information is limited to a maximum of five characters per line on the
Vehicle Certification Label. Because of this, calibration identification consisting of more than five
characters will wrap to the second line on the VC label.
Powertrain calibration information is printed in the lower right corner of the Vehicle Certification Label.
Only the base calibration information is printed. Revision levels will not appear, however, this
information can be found in the On Line Automotive Service Information System (OASIS). For the
current model year, Ford Motor Company is using three different protocols which describe powertrain
base calibration. These protocols are designed to provide worldwide standardization for vehicle
calibration. If the electronic calibration strategy has been used since 1998 and carried into the current
model year, protocol 1 will be used. Refer to Protocol 1 below. If the electronic calibration strategy has
been used since 1999 and is carried into the current model year, protocol 2 will be used. Refer to
Protocol 2 below. For new electronic calibration strategies introduced since the 2000 model year, use
protocol 3. Refer to Protocol 3 below.
Protocol 1
Item
1 Model year (model year in which calibration strategy was first introduced)
2 Engine code
3 Engine revision level
Protocol 2
Item
1 Model year (model year in which calibration strategy was first introduced)
2 Engine code
3 Transmission code
4 Emission standard (designates the specific country emission standard)
Description
Description