FLEX-HONE 4C6325 - Caterpillar

The Engine Monitoring System is not a guarantee against catastrophic failures. Programmed delays and derate schedules are designed to minimize false alarms and provide time for the operator to stop the engine.
The following parameters are monitored:
Coolant temperature
Oil pressure
Engine speed
Atmospheric pressure (Barometric pressure) The coolant temperature, oil pressure, and the engine speed can trigger an engine shutdown.
Atmospheric pressure (Barometric pressure) can trigger an engine de-rate.The atmospheric pressure sensor (Barometric pressure sensor) can de-rate the engine. Operating the engine and increasing the altitude will de-rate the engine in accordance with emission regulations. The start of the de-rate will be determined by the flash file that is installed.