Module Programming Methods: Notes

Some modules must be programmed as part of the repair procedure. If this procedure is not followed, the module will not function correctly and may set a number of diagnostic trouble codes (DTC)s, 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 Worldwide Diagnostic System (WDS) automatically attempts to retrieve the module configuration information from all modules. If the module cannot communicate, the diagnostic tool either requests the As-Built data or displays a list of items that need to be manually configured. The WDS programs the module based on the data entered.

For diagnostic tool information, refer to the GENERAL PROCEDURES .

There are 3 different methods that are used for module programming:

• programmable module installation (PMI)
• calibration update
• programmable parameters

Some modules do not support all 3 methods.