E 150 V8-4.6L SOHC VIN W (2004)
Information Bus: Description and Operation
PRINCIPLES OF OPERATION
Definition of Terms
Calibration Update: Some modules are designed to be flashed or reflashed with complete new software packages. This process of reflashing the module
is a calibration update.
Programmable Parameters: These are options contained within the existing software. These include items such as tire size, customer preference items and
anti-theft options. The current settings are downloaded from an existing module then uploaded to a new module. They can also be configured using the
diagnostic tool. Programming parameters is very different from updating calibrations as no software is changed only the options already contained in the
Module Programming Methods
Some modules must be programmed (configured) as part of the repair procedure. If this procedure is not followed the module will not function
correctly and may set a number of DTCs, including B2477 or P1639, which indicate that some necessary data has not been programmed into the
Modules that need programming should not be exchanged between vehicles. In most cases the parameter values or settings are unique to that vehicle,
and if not set correctly will cause concerns or faults.
WDS will automatically attempt to retrieve the module configuration information from all modules when vehicle ID is carried out. If the module does
not contain correct information, the diagnostic tool will either request "As Built" data or display a list of items that you will need to manually
configure. The diagnostic tool will program the module based on the data you enter.
For additional WDS/diagnostic tool programming procedures, refer to Programmable Module Installation (PMI).
There are three different methods that are used for module programming:
programmable module installation (PMI)
programmable parameters Some modules do not support all three methods.
Some modules do not support all three methods.
Programmable Module Installation (PMI)
The programmable module installation (PMI) method is used when a new programmable module is installed on the vehicle. It is no longer necessary
to command the diagnostic tool to gather module option content from the old module. The diagnostic tool automatically obtains any available module
option content information from the old module during the vehicle ID routine that runs when the diagnostic tool is initially connected to the vehicle. It
is important that you connect WDS to the vehicle and allow it to identify the vehicle and obtain configuration data prior to removing any modules.
Calibration update is used to install a new calibration software and strategy into a module.
If a module that has been modified using programmable parameters needs to be installed, the PMI procedure will maintain the parameters in their
altered state if WDS is able to communicate with the old module during Vehicle ID. Otherwise you may need to use programmable parameters to
return them to the altered state.
Vehicle Identification (VID) Block
Some PCMs contain a memory area called a vehicle identification (VID) block.
The PCM VID block may contain the factory settings for the PCM, unless the PCM is flashed with a new calibration, in which case some PCM
parameters may be modified.
As-Built Data Center
The As-Built Data Center maintains a record of the vehicle configuration in a database. The vehicle VIN is required to obtain this information. The
As-Built Data Center records the applicable module configurations stored in each module before the vehicle leaves the factory. The As-Built Data
Center will always reflect the original build of the vehicle as it left the factory. Only contact the As-Built Data Center when directed to do so by the