Operation and maintenance manual

Section 110-0030
SM 2121 Rev 1 11-03
3
Engine - Engine and Mounting
engine. The fault should be diagnosed and corrected at
the earliest opportunity.
7. Stop Engine Light - When the 'Stop Engine' light
comes on, the computer has detected a major
malfunction in the engine that requires immediate
attention. It is the operators responsibility to shut down
the engine to avoid serious damage.
8. Diagnostic Request/Stop Engine Override
Switch - Operates as a diagnostic request switch
when:
a - the engine is not running and ignition is 'On'.
b - the engine is idling and not in an engine protection
condition.
Pressing and releasing the switch will flash out the
engine codes. Pressing the switch a second time will
stop the engine codes flashing.
Note: Inactive codes are displayed on Check Engine
Light and active codes are displayed on Stop Engine
Light. Code 25 means no codes present.
Operates as a Stop Engine Override Switch when the
engine is in a rampdown protection mode for any of the
following:
Low Coolant Level
High Coolant Temperature
Low Oil Pressure
High Oil Temperature
9. Diagnostic Test Point - Plug in connector for
diagnostic data reader (DDR).
Operation
Numbers in parentheses refer to Fig. 2.
The machine is equipped with the DDEC engine
protection system, which records the stop engine
malfunction in ECM (1). The stop engine and check
engine lights illuminate when the engine protection
system is initiated. The engine will immediately reduce
to 70% of the available torque. Rampdown then
commences over a 30 second period and reduces the
engine to 40% of the available torque.
SM - 1840
Fig. 2 - DDEC Components
1 - Electronic Control Module (ECM)
2 - Programmable Read Only Memory (PROM)
3 - Electronic Unit Injectors (EUI)
4 - Batteries
5 - Electronic Foot Pedal
6 - Check Engine Light
7 - Stop Engine Light
8 - Diagnostic Request/Stop
Engine Override Switch
9 - Diagnostic Test Point
8
6
7
5
3
1,2
4
P
12
STOP
9