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 configure a new module may result in incorrect operation and/or DTCs setting.

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.