Additional Information
The EIST will be overruled if any of the following conditions are present:
Coolant temperature is lower than Idle Timer Low Coolant Temperature
Override Threshold (N182)
Oil temperature is lower than EIST Low Oil Temp Limit
Fuel temperature is lower than EIST Low Fuel Temp Limit
Ambient temperature is less than Idle Timer Low Ambient Temp Threshold
(N185)
Ambient temperature is greater than Idle Timer High Ambient Temp
Threshold (N184)
Engine load is greater than Idle Timer Engine Load Threshold (N183), if
enabled
DPF regeneration is in progress
The engine is in Service Mode
Figure 6.1 shows how the low coolant temperature limit and low and high ambient air
temperature limits (if enabled) will affect the EIST.
Figure 6.1 – EIST Coolant and Ambient Air Temperature Limits