Chevrolet impala 2000 ユーザーズマニュアル

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.

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 will be displayed. Press the MODE button until
the proper variance number, as shown on the map, is
showing. Press the RESET button to set the new variance
zone and resume normal operation.

The display will show all the display segments for half a
second to acknowledge the change in zone number.

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.

To calibrate the compass, in an area free from large metal
objects, make three 360

_ turns. The calibration symbol

will turn off and the compass reading will be displayed.