Principles of Operation: Notes

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:

• B2477 - sets when a body/chassis module is not configured or is configured incorrectly.
• 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.
• P0602, P0605 and/or P1639 - sets when the PCM vehicle identification (VID) block is not configured.
• U0300 - sets when the configuration between 2 or more modules do not match.
• U2050 and/or U2051 - sets when a valid strategy/calibration is not present.

The following are the 3 different methods of configuration:

• Programmable module installation (PMI)
• Module reprogramming ("flashing")
• Programmable parameters

Some modules do not support all 3 methods.