Electrical Compass Zone Selection and Calibration: Notes

NOTE:

You should do this procedure any time the electrical compass unit is replaced.
You should do this procedure in an open area away from buildings, power lines, other vehicles, and any other sources of strong magnetic fields.
If you see "--" and the CAL indicator is shown in the audio display, the electrical compass unit is self-calibrating.
The electrical compass unit may need to be manually calibrated after exposure to a strong magnetic field. If the electrical compass unit seems to be continually showing the wrong direction, and is not self-calibrating, do the following.