64 2 ENGINE AND VEHICLE FEATURES
• When the coolant temperature is above 112 °C
(234 °F ), the red EN GINE lamp will flash, an
audible alarm will sound, and DTC 322 will be
set. If the vehicle ha s the warn ing protection
feature enabled, the engine will shutdown after
30 seconds.
Fuel reduction is calibrated to a maximum of 30%
before standard engine warning or optional EWPS is
engaged. A DTC is stored in the ECM memory when
a warning or shutdown occurs.
NOTE: Coolant temperature compensation is
disabled in emergency vehicles that require 100%
power on demand.
Idle Shutdown Timer (IST)
The IST feature allows the ECM to shutdown the
engine when an extended idle condition occurs.
The IST ca n be programme d for the customer to
automatically shut the engine down for idle times that
range from 2 to 120 minutes.
The red ENGINE lamp will illuminate before eng in e
shutdown. The lamp will flash for 30 seconds to warn
the operator engine shutdown is approaching. Idle
time is measured from the last clutch or brake pedal
transition. The engine must be out of gear for the IST
to work.
For additional information and resets for engine
shutdown timer, see “IST System” in Section 7 (page
497).
Electronic Fan (EFAN)
Engine electronics allow for the operation of an
electronic fan or an air fan solenoid. For additional
information, see “EFAN Con trol” in Section 7 (page
398).
Radiator Shutter Enable (RSE)
The R SE keeps the engine warm during cold weather
operation. The RSE enables faster warm-up of the
cab and faster windshield defrosting. For additional
information, see “RSE” in Section 7 (page 514).
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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