The request/inhibit regen switch (
Fig. 7.5
), located
on the dash, can have three selectable positions:
•
request regeneration;
•
default (either automatic regeneration or inhibit
state);
•
inhibit regeneration.
NOTE: The regen switch can start a parked
regen only when at least one of two conditions
exists: either the DPF light is lit, or the engine
software calls for it. If neither of those conditions
exist, the regen switch cannot cause a regen-
eration to happen.
The function of the switch will vary by the engine
make and model in the vehicle. See the engine op-
eration manual for switch operation details.
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
•
low oil pressure
•
auxiliary shutdown
Stop Engine Override Switch
In the event that the vehicle is operating in a critical
location when a shutdown is initiated, a Stop Engine
Override (SEO) switch can be used to override the
09/25/2006
f610814a
Fig. 7.4, Malfunction Indicator Lamp (MIL)
f610848
03/09/2012
RGEN
Fig. 7.5, Request/Inhibit Regen Switch
Engines and Clutches
7.3
