OPERATING INSTRUCTIONS
cylinder liners. The unburned fuel
will be carried into the lubricating
oil, causing fuel dilution.
3. Carbon deposits will form on
fuel injector tips, causing nozzle
plugging.
4. Carbon deposits will form on the
turbine wheel of the turbocharger,
reducing turbocharger ef
fi
ciency.
A CAP (cold ambient protection)
system has been added to the ECMs
used on vehicles. This software aids
in engine warm-up and helps maintain
optimum engine heat during extended
idling periods.
After
fi
ve (5) minutes of idle time
with the intake air temperature below
32 °F (0 °C), the CAP will slowly
ramp up the engine idle speed to
900 rpm (engines with automatic
transmissions) or 1400 rpm (engines
with manual transmissions). Engine
speed will increase or decrease to
an rpm that will maintain a coolant
temperature of 160 °F (71 °C).
NOTE:
The lower CAP rpm limit for engines
with automatic transmissions
minimizes the possibility of vehicle
lurch, should the operator place the
shift lever in gear without first applying
the service brakes to lower the idle
speed to 700 rpm.
The cycle described above will
continue until one or a combination of
any of the following occurs:
□
Engine load is greater than 25%.
□
Brake pedal is applied or brake
switch fault is detected.
□
Clutch pedal is depressed or clutch
pedal switch fault is detected
(manual transmission).
□
Shift selector is moved from
neutral to forward or reverse range
(automatic transmission).
□
PTO switch, also used for
electronic hand throttle, is turned
on.
□
Accelerator pedal is depressed or
accelerator pedal sensor fault is
detected.
□
Timed idle shutdown is enabled.
□
CTO (coolant temperature sensor)
fault is detected.
□
AIT (ambient air intake
temperature) sensor fault is
detected.
30
All information subject to change without notice.
(Rev. May 2004)
DDC-SVC-MAN-0057 0305
Copyright © 2003 DETROIT DIESEL CORPORATION