DDEC V SYSTEM
When the Cruise Control Switch
is in the ON position, Cruise
Control is engaged by momentarily
contacting the Set/Coast Switch to
the ON position. 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 ECU 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 ON 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 Resume/Accel Switch restores the
vehicle to the previously set cruise
speed.
Using either the brake or the clutch
will disable Cruise Control.
Engine Brakes
Engine brakes are enabled by a
dash-mounted On/Off switch with a
separate intensity switch to select low,
medium or high braking power.
LOSS OF VEHICLE CONTROL
To avoid injury from loss of
vehicle control, do not activate
the Engine Brake system under
the following conditions:
On wet or slippery pavement,
unless the vehicle is equipped
with ABS (anti-lock braking
system) and you have had
prior experience driving
under these conditions.
When driving without a trailer
(bobtailing) or pulling and
empty trailer.
If the tractor drive wheels
begin to lock or there is
fishtail motion after the
Engine Brake is activated.
Deactivate the brake system
immediately, if this occurs.
The engine brakes will only operate
when the Accelerator Pedal is fully
released. Disengaging the clutch
will prevent the engine brakes from
operating.
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All information subject to change without notice. (Rev. 01/04)
6SE484
0401
Copyright © 2004 DETROIT DIESEL CORPORATION