Operators Manual

Table Of Contents
NOTE: The Stop Engine Override Switch and the Diagnostic Request
Switch (EPA07 function only) are the same.
NOTE: Holding down the Stop Engine Override Switch will not prevent the
engine shutdown sequence. You must continue to reset the automatic
shutdown system by pressing the Stop Engine Override Switch at intervals
of approximately 15 to 20 seconds.
It takes 30 seconds from the time the automatic shutdown sequence begins until
engine shutdown. Therefore, the operator must press the override switch just prior
to engine shutdown and continue to do so until the vehicle can be brought to a stop
in a safe location.
Immediate Speed Reduction
The immediate speed reduction option will bring engine rpm back to a
predetermined speed, but will not shut down the engine.
The engine should not be restarted after it has been shut down by the engine
protection system, unless the problem has been located and corrected.
Red Stop Lamp
The conditions that will cause the RSL (Stop Engine) to come on are:
High coolant temperature
Loss of coolant
High oil temperature
Low oil pressure
Auxiliary shutdown
Whenever the AWL (Check Engine) or the RSL comes on, the DDEC 10 system
will determine where the problem is and will then store this information in its
memory.
If the malfunction is intermittent, the lights will come on and go off as the
computer senses the changing engine condition.
Diagnostic Tool
The diagnostic tool for Detroit Diesel Electronic Control (DDEC 10 and newer) is
the DiagnosticLink
®
8.x. DiagnosticLink requirements are listed earlier in the
manual under Data Recording Capability.
Once the malfunction has been corrected, the DDEC system will return the engine
to normal operation.
The air temperature in the intake system is increased with the addition of EGR.
DDEC is programmed to reduce fueling (power) for a short time to reduce air and
coolant temperatures when necessary.
Detroit Diesel Electronic Controls (DDEC) System
66 All information subject to change without notice.
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