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SERIES 50 OPERATOR'S GUIDE
Data Recording Capability
DDEC Reports is a data recording
capability that is standard on all DDEC
IV engines. DDEC Reports contains
information on driver activities,
engine performance and critical
incidence reporting. The information
can be extracted with Detroit Diesel
Diagnostic Link
®
2.1 (DDDL 2.1)
or later software. To perform the
extraction, at least a 486 computer
with a 16-MB RAM is required.
DDEC IV Operation
NOTE:
This engine is equipped with DDEC
software. This software generally
assures optimal engine performance.
The installation of software upgrades
may cause minor changes in features
and engine performance.
Since the DDEC system is electronic,
a battery is required to operate the
computer. The system operates at 12
or 24 volts. However, in the event of a
power supply malfunction, the system
will continue to operate at reduced
voltage. When this occurs, the CEL
will come on.
The engine will only operate at
reduced rpm until the battery voltage
reaches a point where the ECM will
no longer function and the engine
shuts down.
Should the CEL come on for any
reason, the vehicle can still be
operated and the driver can proceed
to the required destination.
This
condition should be reported to an
authorized Detroit Diesel distributor
or dealer.
NOTICE:
When the SEL comes on, the
computer has detected a major
malfunction in the engine that
requires immediate attention.
It is
the operator's responsibility to
shut down the engine to avoid
serious damage.
The engine can be configured to
give a warning only, to ramp down
(reduce power) or to shut down.
Ramp down will reduce engine rpm
to a pre-determined speed, but will
not shut down the engine. With
the 30-second shutdown option, the
engine will begin a 30-second, stepped
power-down sequence until it shuts
down completely.
Stop Engine Override can be supplied
in case the vehicle is to operate in a
critical location.
NOTE:
The Stop Engine Override switch and
the Diagnostic Request switch are the
same.
All information subject to change without notice.
(Rev. 01/ 04)
27
6SE550 0401
Copyright © 2004 DETROIT DIESEL CORPORATION