SLEEVE 7G3375 - Caterpillar

Many programmable parameters affect 3126B HEUI Engine operation. These parameters may be changed using Electronic Service Tools. The parameters are stored in the ECM, not the Personality Module. Most parameters can be read. However, passwords protect parameters from unauthorized changes.There are two categories containing various parameters, System Configuration Parameters and Customer Specified Parameters.System Configuration Parameters can be altered only with the proper Factory passwords using an Electronic Control Analyzer Programmer (ECAP) or Caterpillar Electronic Technician (ET).Customer Specified Parameters can be changed using an Electronic Service Tool only with the proper customer passwords. Refer to Passwords for more details on how to receive and use factory and customer passwords. For details on how to read and change parameters using an ECAP, refer to Special Instruction SEHS8886 (if using the NEXG4522 Truck Engine Functions Service Program Module). For details on how to read and change parameters using a CAT ET, refer to the Caterpillar Electronic Technician, Getting Started Manual, included with the software.System Configuration Parameters
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 (FLS)
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 (FTS)
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 using an incorrect personality module for the engine. Each power rating family and emission certification has a different code associated with it.When a personality module is replaced (using flash programming), 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