Engine Protection - Detroit Diesel MBE 900 Technician Manual

PRELIMINARY
4.4

ENGINE PROTECTION

When the DDEC System on an MBE engine detects a problem PID or SID, it will derate
performance or shut down the engine to prevent damage.
The following active fault codes can limit the engine speed:
PID 100 indicates that the Engine Oil Pressure reads low or there is a problem with the
Engine Oil Pressure sensor data.
SID 21 indicates a problem with the Crankshaft Position Sensor data or a mismatch
between the Crankshaft Position Sensor and Camshaft Position Sensor signals.
The following active fault codes can limit the engine torque output:
PID 105 indicates that the Intake Air Temperature reads high or there is a problem with
the Intake Air Temperature data.
PID 110 indicates that the Engine Coolant Temperature reads high or very high or there is
a problem with the oil pressure sensor data.
SID 146 indicates that the EGR Temperature reads too high or too low, that the EGR Valve
is not responding; or there is a bad EGR System component.
The following conditions can limit the engine torque output to its current setting:
SID 21 indicates a problem with the Crankshaft Position Sensor data or a mismatch
between the Crankshaft Position Sensor and Camshaft Position Sensor signals.
The DDEC-ECU is reading the EGR Temperature but the EGR Temperature is not enabled
in the DDEC-ECU fuel maps.
The following conditions can shut down the engine when enabled in the DDEC-VCU:
Shutdown can be enabled if Engine Coolant Temperature reads high. The default setting is
enabled.
Shutdown can be enabled if Engine Coolant Level reads low. The default is disabled.
Shutdown can be enabled if Engine Oil Pressure reads low. The default is enabled.
NOTE:
The Low Engine Oil Level fault cannot be enabled on a DDEC system of a NAFTA MBE
engine because the engine oil level sensor is not offered in the NAFTA market.
All information subject to change without notice. (Rev. 5/05)
7SE940 0505 Copyright © 2005 DETROIT DIESEL CORPORATION
MBE EGR TECHNICIAN'S GUIDE
4-21