Shown on:
Name Description Value
Units (*=user
selected)
Explanation
Eng.
tab
Ves.
tab
X DemandSensor2
Mechanical demand
sensor B
0–100 Percent
This is a dual Hall‑effect sensor used only on mechanical
engines. It is mounted on the throttle and shift bracket. The
magnet is mounted on the throttle lever.
X DesiredPhi Equivalence ratio target 0.85–1.40 Ratio
The ratio of the ideal air/fuel ratio to the actual air/fuel ratio. This
can vary with engine demand, from 0.85 to 1.40. 1.0 =
stoichiometric, <1 = lean, >1 = rich.
X ECT
Engine coolant
temperature
Variable ºC (ºF)* The engine block water temperature.
X EGT Exhaust gas temperature Variable ºC (ºF)* Exhaust gas temperature after water sprayer.
X EngineSerialNumber Engine serial number – –
This will display the engine serial number, as programmed into
the PCM at the time the engine is manufactured.
X ESCDutyCycleProbe
Duty cycle of the electronic
shift actuator
Positive value =
forward shift
0 = neutral/
stationary
Negative value =
reverse shift
Status
This indicates the position the shift actuator is reporting.
NOTE: When the forward shift is complete, the value will likely
return to zero. However, the actuator will maintain a negative
value in reverse to ensure that the clutch stays engaged.
X ESTOP Emergency stop 0 or 1 Status
The status of the emergency stop switch: 1 for E‑stop active or 0
for E‑stop not active.
X FuelLevel1 Fuel level 1 0–100 Percent
The tank level reading from Tank 1 on the 6‑pin SmartCraft boat
harness.
X FuelLevel2 Fuel level 2 0–100 Percent
The tank level reading from Tank 2 on the 6‑pin SmartCraft boat
harness.
X FuelRate_J1939 Fuel flow rate Engine dependent L/h (gph)*
The calculated volume of fuel being delivered to the cylinders by
the fuel injectors.
X GuardianCause
Guardian power reduction
cause
Variable Text
When the engine goes into Guardian mode, the value in this field
shows the cause.
X GuardianLatchedPwrLim Guardian available power 0–100 Percent This is the current percentage of power allowed by the PCM.
X IAT Intake air temperature Engine dependent ºC (ºF)* The temperature of the air in the induction system.
X IdleRPMSetPt_BDR Engine speed target Engine dependent RPM
The idle speed (RPM) that the PCM wants, based on a
programmed value in the calibration.
X InjMPW Fuel injector pulse width Engine dependent ms
Injector pulse width displayed for each cylinder, in numerical
order, showing the time that the injector is open at that time.
These numbers fluctuate rapidly as the engine runs in the
various RPM ranges.
These numbers refresh constantly and provide good clues for
what’s going on with the fuel delivery for each cylinder. This
number is what the PCM is commanding based on the current
calculations being performed within the program. It does not
know if the fuel is actually making it to the cylinder.
CDS G3—Live Data
Page 3C-4 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018
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