Immediate Speed Reduction; Red Stop Lamp; Diagnostic Tool; Flashing Malfunction Codes - Detroit Diesel MBE 900 Operator's Manual

DDEC VI SYSTEM

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 (Stop Engine) come on,
the DDEC computer 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 DDEC VI is
DDDL 7.0. which requires at least a
48
DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION
Pentium II computer with at least 256
MB of RAM.
Once the malfunction has been
corrected, the DDEC system will
return the engine to normal operation.
The temperature of air in the intake
system is increased with the addition
of an EGR. DDEC is programmed
to reduce fueling (power) for a
short time to reduce air and coolant
temperatures when necessary. DDEC
will store an information code that
this event occurred, but no corrective
action is required as this action
is designed to maintain operation
without a noticeable affect on vehicle
performance.
Flashing Malfunction Codes —
All malfunction codes are four digits.
The malfunction code recorded in the
computer memory will remain until it
is erased by a technician.
The flashing malfunction code can
also be obtained by the operator.
To support flashing codes, a Stop
Engine Override/Diagnostic Request
Switch must be configured and the
AWL (Check Engine) and RSL (Stop
Engine) must be hard-wired. The CPC
cannot flash these lamps if they are
not hard-wired.
The flashing code feature may be
activated by satisfying one of the
following conditions:
All information subject to change without notice. (Rev. 04/08)