Expedition 4WD V8-5.4L VIN 5 (2006)
Information Bus: Testing and Inspection
Module Configuration
Principles of 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 the parameters is different from updating calibrations as no software is changed, only the options already
contained in the software.
Some modules must be programmed as part of the repair procedure. If this procedure is not followed the module does not function correctly and may
set a number of diagnostic trouble codes (DTCs), including B2477 or P1639, which indicate that some necessary data has not been programmed into
the module.
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 cause concerns or faults.
The WDS automatically attempts to retrieve the module configuration information from all modules. If the module does not contain correct
information, the diagnostic tool either requests As Built data or displays a list of items needed to manually configure the module. The diagnostic tool
programs the module based on the data entered.
For additional WDS/diagnostic tool programming procedures, refer to Programmable Module Installation.
There are 3 different methods that are used for module programming:
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programmable module installation (PMI)
-
calibration update
-
programmable parameters
Some modules do not support all 3 methods.
PMI
The 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 the
WDS to the vehicle and allow it to identify the vehicle and obtain configuration data prior to removing any modules.
Calibration Update
Calibration update is used to install a new calibration and strategy into a module.
Programmable Parameters
If a module that has been modified using programmable parameters needs to be installed, the PMI procedure maintains the parameters in their altered
state if the WDS is able to communicate with the old module during vehicle ID. Otherwise, it may be necessary to use programmable parameters to
return the parameters to the altered state.
Vehicle Identification (VID) Block
Some powertrain control modules (PCMs) contain a memory area called a VID block.
The PCM VID block may contain the factory settings for the configurable modules 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 identification number (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 always reflects 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 diagnostic tool.
Inspection and Verification
INSPECTION AND VERIFICATION
