Check Engine Oil Pressure Switch

In Diesel Engine Mode, the oil pressure switch is pressure good during ECU Wake-Up before Engine Start; engine operation alarms only and electric operation does not activate.

The system is in Diesel Engine Mode AND the oil pressure switch = pressure good during the ECU Wake-Up prior to Engine Start (The ECU is turned on to check the Engine Coolant Temperature to determine PreHeat time).

Engine Operation: Alarm only Electric Operation: Will not activate in electric operation.

Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.