Service manual

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8/14/02
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ECU MONITOR
Monitor selected ECU parameters with the vehicle
engine running or with the vehicle engine off and the
ECU powered-up. It can be operated in “Continuous”
(live) or “Hold” (snap shot) mode. You can start and
run the vehicle engine with the ECU monitor active.
While the monitor window is displayed, constant
communications between the ECU and PC are
occurring - the ECU will not power itself down after 2
minutes. The moment you click CANCEL, the two
minute power-down timing will start if no other com-
munication is attempted.
CAUTION:
When setting idle speed with the monitor, the
engine must be at operating temperature 70°C.
Using the ECU Monitor
To use the monitor, start by connecting the interface
cable to the computer and vehicle.
1. Open the Cannondale Diagnostic Tool software
on your PC.
2. Power-up the vehicle ECU.
3. Click the MONITOR ECU Parameters button.
The ECU monitor window will be displayed.
Select “Continuous” to view live data.
Select “Hold” to take a snap shot and hold the val-
ues displayed.
Click CANCEL to exit and close the monitor.
ECU Parameters (defined)
•“RPM” - displays the engine rpm
•“Throttle Position (%)” - displays the
percentage that the throttle plate is open. This
value may not be “0” when fully closed or 100%
when fully open.
•“Battery Voltage” - displays battery/ system
voltage.
•“Airbox Temperature (degC)” - air temperature
reading as measured by the airbox air pressure
sensor.
•“Airbox Pressure (kPa)” - airbox pressure
reading as measured by the ECU sensor.
•“Engine Temperature “(degC)” - engine
temperature reading as measured by the
coolant temperature sensor.
•“IACV Stepper Position” step position of the
Idle Air Control Valve (IACV). The ECU moves
or “steps” the valve between 0 - 255 depending
on the current engine and air temperature.