NOTE: The regen switch can start a parked
regen only when at least one of two conditions
exists: either the DPF light is illuminated, or the
engine software calls for it. If neither of those
conditions exist, the regen switch cannot cause
a regeneration to happen.
The regen-inhibit switch provides additional control
over the aftertreatment regeneration process. The
inhibit switch will stop a regeneration cycle in
progress, and prevent the start of a regeneration
cycle until the switch is no longer active. See
Fig. 7.6.
DD15 Heavy-Duty Engine
See Chapter 2 of this manual for information on the
DDEC VI operator controls. See the
Detroit Diesel
DD15 Engine Operator’s Guide
for complete details
of engine operation.
Engine Protection
An engine protection system monitors all engine sen-
sors and electronic components, and recognizes sys-
tem malfunctions. If a critical fault is detected, an
amber Check Engine warning lamp and a red Stop
Engine lamp illuminate. See Fig. 7.3.
The standard parameters that are monitored for en-
gine protection are: low coolant level, high coolant
temperature, low oil pressure, and high oil tempera-
ture.
Amber Check Engine Warning Lamp
When the amber Check Engine warning lamp comes
on for any reason, the vehicle can still be operated,
and the driver can proceed to the required destina-
tion. See Fig. 7.3. This condition should be reported
to an authorized service center as soon as possible.
Red Stop Engine Lamp
When the red Stop Engine lamp comes on, the com-
puter has detected a major malfunction in the engine
that requires immediate attention. See Fig. 7.3. It is
the operator’s responsibility to shut down the
engine to avoid serious damage.This system fea-
tures a 30-second, stepped-down power-shutdown
sequence, or an immediate emergency-running
mode, in the event that a major engine malfunction
occurs. The conditions that will cause the red Stop
Engine lamp to come on are:
•
high coolant temperature
•
loss of coolant
•
high oil temperature
09/25/2006 f610814a
Fig. 7.4, Malfunction Indicator Lamp (MIL)
f610848
10/02/2006
Fig. 7.5, Regen Switch
f610944
07/30/2009
Fig. 7.6, Regen-Inhibit Switch
Engines and Clutches
7.3
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