5
Scan Screen
The Scan Screen is accessed by pressing the
S
Can
button. This screen
provides the equivalent of over a dozen gauges in one package. The specific
gauges that give data depend on the engine model and configuration.
Press
S
Can
to switch between stopped and scanning. Near the top of
the screen is an icon that indicates the screen “mode”, Scan or Watch. An
arrow icon indicates Scan, a stop sign indicates Watch.
Note: For the Scan Line to work properly, the correct engine must be
selected. The engine type is set by pressing the
p
rog
button.
Scan Mode
The Scan Gauge Display will cycle from gauge to gauge, displaying each
one for a set amount of time. You can program the gauges displayed in this
mode, and the duration displayed, using the VMS settings and Scan Prefer-
ence Screens. (See those sections for details.)
The gauge is represented with a Title, and a numeric value. At the top of
the screen is the title of the gauge, and beside it is the numeric value.
Gauge Items
All gauge items are obtained directly from the engine and transmission,
and are digitally accurate. In general, the VMS is much more reliable and ac-
curate than the conventional dash gauges.
Most gauges are self-explanatory. Some, such as Accelerator Position,
are useful only in certain troubleshooting situations. Some duplicate the dash
gauges, but are more accurate and precise than the conventional gauge.
Others are truly unique.
Engine Coolant Temperature
When driving in hot weather and working the engine hard, we recommend
watching this gauge. Most engine experts agree that you should start “man-
aging” your temperature when it reaches about 210 degrees. From that point
on your goal should be to stabilize the temperature before it reaches 225 or
higher. (Engines models vary somewhat in their tolerance for heat. Check
your engine manual for details on your engine.)
Horsepower and Torque
These gauges shows the calculated engine output. The VMS cannot
compensate for fans, belts, and other parasitic loads on the engine, and this
value may be thrown off by a malfunction in the engine. But it does provide an
effective indicator of engine performance. Of the two, Torque is more indica-
tive of motive force and efficiency. When working the engine, try to maximize
your torque output.
At very low RPMs these values cannot be accurately calculated. Under
these conditions both of these gauges will read zero.
