910103-0645 Tohatsu BOLT

Default Settings for the Caterpillar Monitoring System
Derate - This is a reduction of engine horsepower in response to an abnormal operating condition.Setpoint - This is a specific value which can activate the following responses: warning, deration and shutdown. The setpoint can be a pressure, a speed, a temperature, or a voltage.Hysteresis - This is the change in the signal from a sensor that is tolerated by the ECM. This is the difference between the setpoint that activates a response and the value that deactivates the response. For example, a warning for low voltage can activate if a value below 20 volts is detected by the ECM. The voltage must rise to 22 volts in order to clear the warning. The hysteresis is the 2 volts that are above the 20 volts.Voltage
The ECM automatically warns the operator of low system voltage. The default settings that are programmed at the factory are listed in Table 1.
Table 1
Voltage Monitoring    
Parameter     Default Setting    
Warning setpoint     20 volts    
Warning delay     10 seconds    
Hysteresis     2 volts    
Security level     No required password    If the voltage is below 20 volts for 10 seconds, a warning will occur. To deactivate the warning, the voltage must rise above 22 volts.The setpoint can be programmed to a value between 20 and 22 volts.Engine Oil Pressure
The ECM automatically performs the following functions for low engine oil pressure:
Warning
ShutdownThe strategy is based on a map of the engine oil pressure versus the engine rpm. For engines that are rated up to 1300 rpm, see Illustration 1. For engines that are rated at 1301 rpm and above, see Illustration 2. The default settings that are programmed at the factory are listed in Table 2.
Table 2
Engine Oil Pressure    
Parameter     Default Settings    
Upper oil pressure limit    
175 kPa (25 psi)    
Lower oil pressure limit    
41 kPa (5.9 psi)    
High engine speed limit     1250    
Low engine speed limit     452    
Hysteresis    
40 kPa (5.8 psi)    
Activation delay     10 seconds    
Security level     Required password    
Warning setpoint     Map    
Warning delay     4 seconds    
Shutdown setpoint     Map    
Shutdown delay     9 seconds    
Illustration 1 g00570830
Map of the engine oil pressure versus the engine rpm for engines that are rated up to 1300 rpm (Y) Engine oil pressure in kPa (X) Engine rpm (1) Hysteresis (2) Minimum engine oil pressure
Illustration 2 g00592294
Map of the engine oil pressure versus the engine rpm for engines that are rated at 1301 rpm and above (Y) Engine oil pressure in kPa (X) Engine rpm (1) Hysteresis (2) Minimum engine oil pressureIf the engine oil pressure is below the minimum pressure for four seconds, a warning will occur. To deactivate the warning, the engine oil pressure must rise above the hysteresis that is set in the map.If the engine oil pressure is below the minimum pressure for nine seconds, a shutdown will occur.The map cannot be reprogrammed.High Coolant Temperature
The ECM will automatically perform the following functions for high coolant temperature:
Warning
Derating
ShutdownThe default settings that are programmed at the factory are listed in Table 3.
Table 3
High Coolant Temperature    
Parameter     Default Setting    
Warning setpoint    
102 °C (216 °F)    
Warning delay     5 seconds    
Derate setpoint    
107 °C (225 °F)    
Derate delay