Road Speed Limiting
Road speed limiting limits the speed to the maximum vehicle speed programmed by the customer.
Cruise Control
The ECM controls the cruise control feature. The cruise control system functions similarly for all
electronic engines. Maximum and minimum allowable cruise control speeds will vary based on model. To
operate cruise control, see appropriate truck model Operator’s Manual.
Engine Fuel Pressure (EFP) Monitor
The EFP monitors fuel pressure and indicates when the fuel filter needs to be serviced. For additional
information, see “EFP Sensor” in Section 7 (page 406).
Traction Control
Traction control is a system that identifies when a wheel is going faster than the other wheels during acceleration.
When a traction control condition occurs, a datalink message is sent to the ECM to limit fuel for the
purpose of reducing engine torque.
Vehicles must have a transmission and an Antilock Braking System (ABS) that supports traction control.
Diamond Logic® Engine Brake
International® now offers an optional engine brake. See “Diamond Logic® Engine Brake” in Section 1 (page 53) for feature description.
Diamond Logic® Exhaust Brake
International® now offers an optional integrated exhaust brake. This feature uses VGT to assist in braking.
The EWPS safeguards the engine from undesirable operating conditions to prevent engine damage and
to prolong engine life. The ECM will illuminate the red ENGINE lamp and sound the warning buzzer when
the ECM detects:
• High coolant temperature.
• Low oil pressure.
• Low coolant level (3–way system only).
When the protection feature is enabled and a critical engine condition occurs, the on-board electronics
will shut the engine down. An event logging feature will record the event in engine hours and odometer
readings. After the engine has shutdown, and the critical condition remains, the engine can be started
for a 30 second run time.
Coolant Temperature Compensation and EWPS
Coolant temperature compensation reduces fuel delivery when the engine coolant temperature is
above cooling system specifications.
The reduction in fuel delivery begins when engine coolant temperature reaches approximately 107 °C
(225 °F). A reduction of 15% will be achieved as the temperature reaches approximately 110 °C (230 °F).
When the engine coolant temperature is above 110 °C (230 °F), the red ENGINE lamp is illuminated and
an audible alarm sounds. After the alarm sounds, the engine will shutdown.
• When the coolant temperature is above 109 °C (228 °F), the red ENGINE lamp will be illuminated
and DTC 321 will be set.
• When the coolant temperature is above 112 °C (234 °F), the red ENGINE lamp will flash, an audible alarm will sound, and DTC 322 will be set. If the vehicle has the warning 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 can be programmed 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 engine 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 Control” in Section 7 (page 398).
Radiator Shutter Enable (RSE)
The RSE 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).
