Detroit Diesel MBE 900 Operator's Manual page 54

LOSS OF VEHICLE CONTROL
To avoid injury from the loss of
vehicle control, do not use cruise
control under these conditions:
□ When it is not possible to
keep the vehicle at a constant
speed (on winding roads, in
heavy traffic, in traffic that
varies in speed, etc.).
□ On slippery roads
(wet pavement, ice-or
snow-covered roads, loose
gravel, etc.).
NOTICE:
When descending a hill with
Cruise Control OFF, do not allow
the engine to exceed 2500 rpm
under any conditions. Failure to
observe this precaution can result
in overspeeding and serious engine
damage.
It cannot limit vehicle speeds on
down grades if available engine
braking effort is exceeded, nor can it
maintain speed on upgrades if power
requirements exceed engine power
capability.
Engine speed and power are varied
under Cruise Control to maintain the
All information subject to change without notice. (Rev. 04/08)
DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION
MBE 900 ENGINE 2007 OPERATOR'S GUIDE
set vehicle speed. The vehicle speed
must be above Min. Cruise Set Speed
and below Max. Cruise Set Speed. It
is recommended that Max Cruise Set
Speed be set to the default to allow
proper operation of other features
such as Fuel Economy Incentive and
PasSmart. The Vehicle Speed Limit
should be used to limit vehicle throttle
speed.
When the SPD CNTL is in the ON
position, Cruise Control is engaged by
momentarily contacting the SET/CST
Switch. As a check after each engine
start, DDEC looks for a one time
activation of the clutch (if equipped)
and service brake before DDEC
allows Cruise Control to be enabled.
The MCM must also recognize that
the Cruise Enable Switch has changed.
If the Cruise Enable Switch is off, it
needs to be turned on. If the Cruise
Enable Switch is on, it must be turned
off then on for cruise to operate.
Holding the switch in the SET/CST
position allows the vehicle to slow to a
lower speed. Toggling the switch will
result in a one mile-per-hour (1.6 kph)
decrease in vehicle speed. If Cruise
Control has been disabled, toggling
the RSM/ACC Switch restores the
vehicle to the previously set cruise
speed.
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