Woodward GECO, Technical Manual, Page: 46 / 90

GECO

Stoichiometric Manual 03554
38 Woodward
Screen 1: Fuel Control Alarms
[See Troubleshooting section for description of fault causes]
ClearAll
: Clears all alarm faults
Valve1 Limit
: Fault sets when the
CL valve commands reach their
limit without bringing the EGO
signal to its target.
Valve2 Limit
: See above
Adapt Limit
: Similar to valve limits,
sets when the adaptive shift of the
EGO1 or EGO2 targets reaches
their limit without bringing EGO3 to
its best emissions target value
Valve1 Current
: Current doesn’t
match command.
Valve2 Current
: Current doesn’t
match command.
DC Power
: Power supply voltage
out of range.
MAP Sensor: MAP Sensor
problem.
TC Upstream
: TC signal problem.
TC Downstream
: TC signal problem.
CJC sensor
: TC cold junction sensor problem.
ECU Processor
: Internal microprocessor problem.
Trigger
: Speed signal problem.
EGO1
: Signal too high or poor health value.
EGO2
: See above.
EGO3
: See above.
Screen 2: Inputs
EGO1
: ON/OFF.
EGO2
: ON/OFF.
EGO3
: ON/OFF.
TC_upstream
: Catalyst inlet temperature
ON/OFF.
TC_downstream
: Catalyst outlet
temperature ON/OFF.
MAP
: Inlet manifold temperature ON/OFF.
DP
: Diff Pressure input ON/OFF.
NGP
: Auxiliary input ON/OFF.
Screen 2: Fuel Valves
Valve 1
: ON/OFF- This turns the Valve1
output off and on
Valve 2
: ON/OFF.
Run Default: XX %
: This is the failsafe
position the valve is commanded to take if
all other control functions are lost.
Crank Default
: XX %- This is the position
the valve is commanded to take when the control recognizes the engine is
cranking.
Fuel Valves
Valve 1 ON
Valve 2 ON
Run Default +35.0%
Crk Default +0.0%
Fuel Control Alarms
ClearAll High Low
Valve1 Limit OK OK
Valve2 Limit OK OK
Adapt Limit OK OK
Valve1 Curnt OK OK
Valve2 Curnt OK OK
DC Power OK OK
MAP Sensor OK OK
Open LowExp
TC Upstream OK OK
TC Downstream OK OK
CJC sensor OK OK
Misc.
ECU Processor OK
Trigger FAULT
High Health
EGO1 OK FAULT
EGO2 OK OK
Inputs
EGO1 ON
EGO2 ON
EGO3 ON
TC_upstream ON
TC_dnstream ON
MAP OFF
DP OFF
NGP OFF