System Configuration Parameters affect emissions or rated power of the engine. They are programmed at the factory and would normally never need to be changed through the life of the engine. System Configuration Parameters must be reprogrammed if an ECM is replaced, but not if the Personality Module is replaced (unless the engine rating changes). Proper values for these parameters are stamped on the Engine Information Plate, located on the valve cover or intake manifold. Factory Passwords are required to change these parameters. The following is a description of the System Configuration Parameters.
Full Load Setting
Number representing fuel system adjustment made at the factory to “fine tune” the fuel system. The correct value for this parameter is stamped on the Engine Information Plate. A new ECM must have this parameter programmed to avoid generating a Diagnostic Code 253-02 Check Customer Or System Parameters (56).
Full Torque Setting
Similar to Full Load Setting. This parameter must be programmed or a Diagnostic Code 253-02 Check Customer Or System Parameters (56) will be generated.
Personality Module Code
This code prevents use of incorrect personality module for this engine. Each power rating family and emission certification has a different code associated with it. When a personality module is replaced (either using a personality module chip or if flash programmed), this code (stored in the ECM) must match the one in the introduced personality module or the engine will only operate at low idle and a Diagnostic Code 253-02 Check Customer Or System Parameters (56) will be generated.
When rerating the engine, programming this code to “0” will prompt the ECM to read and match its stored code to the Personality Module Code. This code does not need to be programmed when a personality module is replaced, as long as the new module is of the same family and emission year.
If the Personality Module is of a different family, then pistons, injectors, etc may need to be changed and the Engine Information Plate must also be changed to reflect the new rating.
Some vehicle systems, such as the cooling system or transmission may also require changes when uprating an engine. Please contact the local OEM dealer for further information.
Engine Serial Number
This number should be programmed to match the engine serial number stamped on the Engine Information Plate. A new ECM is delivered with the engine serial number programmed to 0XX00000.