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Compass Variance
Compass variance is the difference between magnetic
north and geographic north. In some areas of the
country, the difference is great enough to cause the
compass to give false readings. If this occurs, the
compass variance must be set.
Setting the Variance
Turn the ignition on and cycle the DIC to the
Compass/Temperature mode. Press the RESET
button for approximately five seconds. The last entered
variance zone number and “VAR” will be displayed.
Press the MODE button until the proper variance
number on the map is shown. Press the RESET button to
set the new variance zone and resume normal operation.
All the display segments will be illuminated briefly to
acknowledge the change in zone number. A chime will
sound to confirm that the new zone number has been set.
Automatic Compass Calibration
The compass is self
-calibrating, which eliminates the
need to manually set the compass. When the vehicle
is new, the calibration process may not be complete.
In these cases “CAL” will be displayed, and all
segments of the compass will be illuminated where
the compass reading is normally displayed.
All Segments Illuminated
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