can range from warning panel indicators to automatic reduction in engine power
followed by automatic engine shutdown. The DDEC
®
system activates an
instrument panel indicator to provide a visual warning of a system malfunction or
operating status. The DDEC
®
system has the ability to perform diagnostics for
self-checks and continuous monitoring of system components.
Cruise Control
For added driver convenience and comfort, DDEC® features a cruise control
option. It can be operated in any gear above 1100 rpm or road speed faster than 32
kph (20 mph), up to the rated engine speed. It can also be programmed to hold the
road speed at or below the maximum vehicle speed. For information on operating
the cruise control, Refer to section "How to Operate the Cruise Control and Fast
Idle".
Data Recording
The DDEC
®
has the ability to extract detailed data on vehicle use and performance
using DDEC
®
Reports software. This detailed data (or DDEC
®
Data) is stored in
the CPC and contains information on performance such as fuel economy, idle time,
and time in top gear. Critical incidents such as detailed diagnostic data records and
hard braking events are also stored. DDEC
®
Data can be downloaded using DDEC
®
Reports software to produce reports.
DDEC
®
Protection System
The DDEC
®
protection system monitors all sensors, electronic components, and
recognizes system malfunctions. If a critical fault is detected, a warning indicator
will illuminate. The malfunction codes are logged into the control unit's memory.
This system has a stepped-power shutdown sequence and an immediate speed
reduction without shutdown feature, either of which can be triggered by a major
engine malfunction, such as low oil pressure, high coolant temperature, or low
coolant level. Engines equipped with the power down/shutdown option have a Stop
Engine Override to allow engine operation for a short period of time. Extending the
engine run time during an engine shutdown can cause equipment damage.
Engine Brake
The engine brake is enabled by a cab mounted ON/OFF control with an intensity
selection to select (HI/MED/LO) braking power. For more information on engine
brakes Refer to section "Engine Brake System". For information on how to operate
the engine brakes, Refer to section "How to Operate the Engine Brakes".
Detroit Diesel Electronic Controls System
38
All information subject to change without notice.
Copyright © 2020 DETROIT DIESEL CORPORATION
DDC-SVC-MAN-0217
