SHAFT 5I7695 - Caterpillar

Overview
These engines are equipped with a high pressure fuel system. The fuel injection pump and the fuel lines deliver fuel to an electronic unit injector in each cylinder. A solenoid on each injector meters the amount of fuel that is delivered by the injector. An Engine Control Module (ECM) sends signals to two pressurizing assemblies on the pump and to the injector solenoids in order to control the injection of fuel.Electronic Control System
The electronic control system consists of the ECM, the engine sensors, and the vehicle interface. The ECM is a computer that controls the operation of the engine. The flash file is the software for this computer. The flash file contains the operating maps. The operating maps define the following characteristics of the engine:
Horsepower
Torque curves
Engine speed (rpm)Refer to Troubleshooting, "System Overview" for additional information on the electronic control system.Vehicle Interface
The ECM interfaces with the vehicle via software and an electrical connector on the ECM. The software can be configured. This allows the electrical connector to support a variety of vehicles and applications.The vehicle provides inputs to the electrical connector on the ECM in order to indicate the status of switches. The ECM must be correctly configured in order to interpret the inputs. Refer to Troubleshooting, "Programmable Input Parameters" for additional information on configuring the inputs.The ECM provides outputs for the vehicle via the electrical connector in order to control lamps, solenoids, and other devices. The ECM must be correctly configured in order for the outputs to match the vehicle's configuration. Refer to Troubleshooting, "Programmable Output Parameters" for additional information on configuring the outputs.