Variance

Variance is the difference between magnetic North and geographic North. In some areas of the world, the difference between magnetic and geographic North is great enough to cause false readings.

IMPORTANT: Remove the Driver Information Center (DTC) before you degauss the vehicle.

If you install a new compass, use the following procedure in order to calibrate the compass:
1. Turn the ignition switch to the RUN position.
2. Depress and hold both the US/MET and the ON/OFF or the MODE buttons for approximately 10 seconds, or until the display reads CAL or C.
3. Drive the vehicle in a complete circle 3 consecutive times. The symbol turns off when the compass is calibrated. The compass will then function normally.

Use the following procedure in order to set the variance for the vehicle's particular locations. On vehicles with a MODE switch, the display must be in the COMP/TEMP mode before setting the variance.

World Magnetic Variation Map:

1. Determine the location on the zone map.
2. Note the zone number.
3. Press and hold both the US/MET and the ON/OFF or the MODE switches.

The display will turn off.
4. After approximately 5 seconds, the variance setting appears on the display (w/o trip computer).

With the trip computer, only a number is revealed at the present zone.
When the variance setting appears, release both of the buttons.

5. Press the ON/OFF or the MODE switch in order to enter the geographical zone number. The compass is now adjusted for variance.
6. Press the MODE button (w/ trip computer) or the ON/OFF button (w/o trip computer) in order to return to the main screen. This action will save the setting.

Due to the nature of the magnetic detection devices in the module, the compass may occasionally show false directions even when operating properly. Since the circumstances that give rise to these false readings may vary, some general knowledge of how the compass works is helpful in determining why false readings occur. Such perceived malfunctions may be the result of special circumstances, or a true system malfunction. Regardless of the problem, the first step in diagnosing the compass system is recalibration. If the problem persists after recalibration, review the following information regarding compass system functions for help in determining if the system is operating properly.