Woodward GECO, Technical Manual, Page: 44 / 90

GECO

Stoichiometric Manual 03554
36 Woodward
Screen 4: GECO  Stoichiometric Adaptive Air/Fuel Calibration (password
protected)
The following is an explanation of the individual screen frames:
Screen 1: Engine
Speed
: Engine rpm from magnetic pickup
(MPU) or “G-lead”. (This value defaults to
1350 if the Digital In RUN signal is used.)
MAP
: Intake manifold absolute pressure in
pounds per square inch.
DP
: Differential Pressure across the
catalyst in inches of Water differential.
DP raw
: Differential Pressure input voltage.
TC Upstream
: Pre-catalyst thermocouple
input in degrees F.
TC Downstream
: Post-catalyst
thermocouple input in degrees F.
Control1
: OPEN LOOP, CLOSED LOOP,
CL+ADAPTIVE. These are the air/fuel ratio
control modes.
Control2
: Same as Control1 except for Bank 2.
RunMode
: STOPPED, CRANKING, RUNNING. These are the start sequence
modes. Once the engine reaches idle speed, it should be in the RUNNING mode.
Run Time
: The time, in hours, since the last engine start.
Hour Meter
: The total engine run time since the control was installed.
DC Power
: Power supply voltage to the circuit board.
Engine
Speed 0 rpm
MAP 10.00 psia
DP 0.35 inH2Od
DP raw 0.00 volts
TC Upstream 1020

F
TC Downstream 1080

F
Control1 OPEN LOOP
Control2 OPEN LOOP
RunMode STOPPED
Run Time 0000:00:00
Hour Meter 0.000
DC Power 23.9 volts