RING-BACKUP 5599866 - Caterpillar

Example of Pulse Width Modulation (PWM) SignalsRated Fuel Position("Rated Fuel Pos" on ECAP) - this indicates the maximum allowable fuel position (longest injection pulse). It will produce rated power for this engine configuration.Reference VoltageA regulated, unchanging voltage supplied by the ECM to a sensor. The reference voltage is used by the sensor to generate a signal voltage.Remote Mounted Throttle Position SensorThis sensor measures throttle position and sends a signal to the ECM. The sensor is mounted off of the throttle assembly. The throttle is connected directly to an electronic sensor (which is not adjustable). Refer to Throttle Position Sensor.SensorA device used to detect and convert a change in pressure, temperature, or mechanical movement into an electrical signal.Service Program Module (SPM)A software program on a factory programmable computer chip, designed to adapt an Electronic Service Tool to a specific application.Short CircuitA condition where an electrical circuit is unintentionally connected to an undesirable point. Example: a wire which rubs against an metallic object until the insulation is worn through and the wire makes contact.SignalA voltage or waveform used to transmit information typically from a sensor to the ECM.Speed "burp"A sudden, brief, unwanted change in engine rpm.SubsystemAs used here, it is a part of the Electronic System that relates to a particular function, for instance throttle subsystem, etc.Supply VoltageA constant voltage supplied to a component to provide electrical power for its operation. It may be generated by the ECM, or it may be vessel battery voltage supplied by the vessel wiring.System Configuration ParametersParameters which affect power rating family or emissions.Throttle PositionThe ECM interpretation of the signal from the Throttle Position Sensor.Throttle Position SensorAn electronic sensor which is connected to an accelerator pedal or a hand lever and sends a Pulse Width Modulated Signal to the ECM.Total TattletaleTotal number of changes to all Customer Specified Parameters stored in the ECM.Warning LampUsed to warn the operator of the presence of a Caterpillar Engine Monitoring detected problem.