Detroit Diesel DD15 EuroIV Operator's Manual page 35

Excessive Idling
Never allow the engine to idle for more than 30 minutes. Excessive idling can
cause oil to leak from the turbocharger.
Changing the Idle Speed
The idle speed range of the DD Platform engine is 600 to 900 rpm if the parameters
in the CPC are set to the default range. Change the idle speed as follows:
1. Turn the cruise control switch to the ON position.
2. To increase the idle speed, push the RSM/ACC switch until the idle reaches
the desired rpm.
3. To decrease the idle speed, push the SET/CST switch until the idle reaches
the desired rpm.
Shutting Down the Engine after High Load Operation
If the engine has been running at full output or the coolant temperature has been
high, idle the engine for five minutes without load. If any of the following
conditions occur, shut down the engine immediately:
NOTICE: A engine running at full output or with high coolant temperature
after a high load operation should idle for five minutes without load. Shutting
down without idling may cause damage to the turbocharger.
• The oil pressure swings back and forth or falls sharply.
• Engine power and rpm fall, even though the accelerator pedal remains steady.
• The exhaust pipe gives off heavy smoke.
• The coolant and/or oil temperature climb abnormally.
• Abnormal sounds suddenly occur in the engine or turbocharger.
Emergency Running Mode
The engine is equipped with an electronic motor control system which monitors the
engine as it is running.
NOTICE: To prevent possible serious engine damage, have any faults
corrected without delay by an authorized service location.
As soon as an engine fault is detected, it is evaluated and one of the following
measures is initiated.
• In conjunction with any dashboard or instrument panel display, the code for the
electronic control unit reporting the fault can be read immediately on the display.
• If the fault is serious enough to impair normal operation, the electronic control
unit switches over to a "limp home" mode. The limp home speed is dependent on
engine control parameters and could be as low as 1000 rpm. This allows you to
safely move the vehicle to a service location or a safe stopping area.
All information subject to change without notice.
DDC-SVC-MAN-0175 Copyright © 2014 DETROIT DIESEL CORPORATION
DD Platform EuroIV Operators Manual
35