Testing and Inspection: Module Configuration
Body Control Module: Testing and Inspection
Module Configuration
MODULE CONFIGURATION
Principles of Operation
Configurable modules accommodate a variety of vehicle options, eliminating the need for many unique modules for one vehicle line. These modules
must be configured when replaced as part of a repair procedure.
Configurable modules should not be exchanged between vehicles since the settings are unique to each vehicle. Failure to configure a new module may
result in improper operation and/or any of the following DTCs setting:
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B2477 and/or B2141 - sets when a body/chassis module is not configured or is configured incorrectly.
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P0602, P0605 and/or P1639 - sets when the PCM vehicle identification (VID) block is not configured.
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B2900 - sets when there is a VIN mismatch between the module with the B2900 and the PCM. The stored VIN in either module may be incorrect.
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U0300 and/or U0301 - sets when the configuration between 2 or more modules do not match.
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U2050 and/or U2051 - sets when a valid strategy/calibration is not present.
The following are the 3 different methods of configuration:
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Programmable module installation (PMI)
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Module reprogramming ("flashing")
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Programmable parameters
Some modules do not support all 3 methods.
Definition of Terms
The following are definitions of configuration terms:
Programmable Module Installation (PMI)
PMI is a scan tool process which configures settings in a new module. Data used for the PMI process is automatically downloaded from the original
module and stored when a scan tool session is started. If this data cannot be retrieved from the module being replaced, the scan tool may prompt for
As-Built data entry or display a list of parameter values that need to be manually selected. Some modules are reprogrammed during PMI when a
strategy/calibration update is available.
NOTE:
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It is important that the scan tool identifies the vehicle and obtains configuration data prior to removing any modules. The new module must be able
to communicate with the scan tool in order to carry out PMI.
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To carry out PMI, see PROGRAMMABLE MODULE INSTALLATION.
Module Reprogramming
Module reprogramming (also referred to as "flashing") is a scan tool process which updates the strategy/calibration in a module. Module reprogramming
is automatically carried out during PMI when a later strategy/calibration is available.
Reprogramming a module with the same level of software will not improve module operation or repair a hardware failure.
NOTE:
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Module reprogramming should be limited to circumstances where a published Technical Service Bulletin (TSB) procedure recommends doing so.
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A module cannot communicate with other modules on the communication network while being reprogrammed. Clear any network communication
DTCs which may have been set in other modules during reprogramming.
Programmable Parameters
Programmable parameters are customer preference items that may be modified by the dealer via scan tool or in some cases modified by the customer
following a procedure listed in the vehicle Owner's Literature. While I many configuration options may exist for a module, only a few of these options
are programmable parameters.
Adaptive Learning and Calibration
Some modules require a separate learning procedure to be carried out if replaced as part of a repair procedure. For adaptive learning and calibration
instructions, refer to the specific module removal and installation procedures.
Vehicle Identification (VID) Block
Some PCMs contain a memory area called a vehicle identification (VID) block. The PCM VID block commonly stores powertrain configuration items
