User Manual

DDEC IV SYSTEM
Engine Protection
The DDEC engine p rot ection
system monitors all engine sensors
and electronic components, and
recognizes system malfunctions. If
a critical fault is detected, the CEL
and SEL illuminate. The malfunction
codes are logged into the ECM's
memory.
The standard parameters which are
monitored for engine protection
are: low coolant level, high coolant
temperature, low oil pressure, and
high oil temperature
This system features a 30-second,
stepped-power shutdown sequence
or an immediate speed reduction
without shutdown in the event a major
engine malfunction occurs, such as
low oil pressure, high oil or coolant
temperature, or low coolant level.
PERSONAL INJURY
To avoid injury from engine
shutdown in an unsafe situation,
ensure the operator knows how
to override the stop engine
condition on a DDEC-equipped
unit.
NOTICE:
Engines equipped wi th the
power-down/shutdown option have
a system override button or switch
to allow engine operation for a
short period of time. Using the
override button so the engine does
not shutdown in 30 seconds but
operates for an extended period
may result in engine damage
Idle Shutdown Timer
The DDEC engine may also have
an optional 1 to 100 minute idle
shutdown system. The purpose of
this system is to conserve fuel by
eliminating excessive id ling and to
allow for a turbocharger cool-down
period. To activate the shutdown, the
transmission must be in neutral with
the vehicle parking brakes set and the
engine in idle or fast-idle m ode.
Cruise Control
Cruise Control is available with
any DDEC engine. Cruise Control
maintains a set vehicle or engine
speed setting. The driver/operator
has switches to set, activate and
deactivate the system. See Figure
6. A slight pressure on the brak e or
clutch deactivates the system, as well.
The minimum speed at which cruise
control can be used is programmable.
24 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION