Programming and Relearning

COMPASS CALIBRATION
The compass must be calibrated to guarantee proper operation. Calibration should take place on a level surface in an area free of large metal objects, such as other vehicles, large buildings, bridges, underground cables, railroad tracks, etc.

If the "CAL" indicator is lit, the compass should be calibrated. The vehicle will be shipped with the "CAL" light ON. Under certain conditions the "CAL" light may also come on during driving. Also, during normal driving, the compass may appear inaccurate, and the "CAL" indicator may or may not come on. In either condition, calibration is required.

Compass Calibration:

To calibrate the compass, drive in complete circles at a speed of 7-10 mph, until the "CAL" indicator is OFF (2 turns). If the "CAL" indicator is not on, prior to calibrating the compass, the "CAL" light will come on for a few seconds to indicate it has been calibrated. When the "CAL" indicator goes off, the compass is calibrated and should display correct headings (for all conditions). Verify proper calibration by checking North (N), South (S), East (E), and West (W). If the compass does not appear accurate, repeat the calibration procedure in another area.

NOTE: Drive in a small circle (try to keep steering wheel in a fixed position) between 7-10 mph, until the "CAL" light goes oft.

VARIANCE SETTING PROCEDURE

Variance Settings:

Variance is the difference between magnetic North and geographic North. To adjust the compass variance set the CMTC to Compass/Temperature mode and press both US/M and STEP buttons for up to 1 second. The symbol VAR and current variance zone number will be displayed. Press the STEP button until the variance setting for your location is displayed. After 5 seconds of inactivity, the displayed zone will be automatically set and normal operation resumed in the Compass/Temperature mode.