HUB-SPROCKET 8G3965 - Caterpillar

Cat Engine Monitoring System
For more information on the Cat Engine Monitoring System and Electronic Control Modules (ECM), refer to the applicable Troubleshooting manual for your specific product.The engine is equipped with a programmable Cat Monitoring System. The Electronic Control Module (ECM) monitors the operating parameters of the engine. The ECM can initiate responses if a specific engine parameter exceeds an acceptable range. Three possible responses may be available for each parameter: "", "DERATE", and "SHUTDOWN". Some of the responses are not available for some of the parameters. An ET service tool is used to perform the following activities:
Select the available responses.
Program the level for monitoring.
Program delay times for each response.The default settings for the parameters are programmed at the factory. To accommodate unique applications and sites, the parameters may be reprogrammed with an ET service tool.The screens of the ET service tool provide guidance for the programming. The following options can be programmed "ON" or "OFF": "", "DERATE", and "SHUTDOWN".The screens of the ET service tool also provide guidance for changing setpoints.The Cat Monitoring System is enabled after the engine is started. The ECM monitors the parameters to determine if the parameters exceed the setpoints.If the monitoring system initiates a warning, a deration, or a shutdown, the event is logged in to the ECM. This procedure occurs even if the parameter is programmed "OFF". If a setpoint for a parameter is exceeded, the event will be logged.Any failure of a sensor will result in disabling the corresponding portion of the monitoring system. The failure of a sensor will cause an "ACTIVE" diagnostic code for the sensor.The derating is cumulative. For example, a derating of 5 percent followed by a derating of 2 percent results in a total derating of 7 percent. If the conditions that cause the derating are not corrected, the derating will continue.Note: The maximum engine fuel temperature before alarms, derates, and shutdowns occur is 70° C (158° F).Note: The voltage for the monitoring system is not configurable. The voltage should be maintained between 18 VDC and 32 VDC.For information on programming the Cat Monitoring System and operating parameters, refer to the Troubleshooting Manual, KENR5454.