Operation and Maintenance Manual

18 SEBU8180-01
Safety Section
Engine Electronics
Uncontrolled electrical circuit paths can result in
damage to the crankshaft bearing journal surfaces
and to aluminum components.
Engines that are installed without engine-to-frame
ground straps can be damaged by electrical
discharge.
To ensure that the engine and the engine electrical
systems function correctly, an engine-to-frame
ground strap with a direct path to the battery must be
used. This path may be provided by way of a direct
engine ground totheframe.
The connections for the grounds should be tight and
free of corrosion. The engine alternator must be
grounded to the negative “-” battery terminal with
a wire that is adequate to handle the full charging
current of the alternator.
The power supply connections and the ground
connections for the engine electronics should always
be from the isolator to the battery.
Engine Electronics
SMCS Code: 1000; 1400; 1900
i02652709
• Derate
• Shutdown
The following monitored engine operating conditions
have the ability to limit engine speed and/or the
engine power:
• Engine Coolant Temperature
• Engine Oil Pressure
• Engine Speed
• Intake Manifold Air Temperature
The Engine Monitoring package can vary for different
engine models and different engine applications.
However, the monitoring system and the engine
monitoring control will be similar for all engines.
Note: Many of the engine control systems and display
modules that are available for Caterpillar Engines
will work in unison with the Engine Monitoring
System. Together, the two controls will provide the
engine monitoring function for the specific engine
application. Refer to the Troubleshooting for more
information on the Engine Monitoring System.
Tampering with the electronic system installation
or the OEM wiring installation can be dangerous
and could result in personal injury or death and/or
engine damage.
Electrical Shock Hazard. The electronic unit injectors
use DC voltage. The ECM sends this voltage
to the electronic unit injectors. Do not come in
contact with the harness connector for the electronic
unit injectors while the engine is operating.
Failure to follow this instruction could result in
personal injury or death.
This engine has a comprehensive, programmable
Engine Monitoring System. The Electronic Control
Module (ECM) has the ability to monitor the engine
operating conditions. If any of the engine parameters
extend outside an allowable range, the ECM will
initiate an immediate action.
The following actions are available for engine
monitoring control:
• Warning