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MWI NORMAL OPERATING CONDITION MWI-143 < SYMPTOM DIAGNOSIS > C D E F G H I J K L M B A O P NORMAL OPERATING CONDITION COMPASS COMPASS : Description INFOID:0000000005524681 COMPASS • The electronic compass is highly protected from changes in most magnetic fields. However, some large changes in magnetic fields can affect it. Some examples are (but not limited to): high tension power lines, • During normal operation, the compass mirror will continuously update the compass calibration to adjust for gradual changes in the vehicle's magnetic “remnant” field. If the vehicle is subjected to high magnetic influ- • If at any time the compass continually displays the incorrect direction or the reading is erratic or locked, ver- ify the correct zone variance. Symptom Chart INFORMATION DISPLAY INFORMATION DISPLAY : Description INFOID:0000000005524682 AMBIENT AIR TEMPERATURE The displayed ambient air temperature on the information display may differ from the actual temperature MWI-33, "INFORMATION DISPLAY : System Description" for details on the correction process. POSSIBLE DRIVING DISTANCE The calculated possible driving distance may differ from the actual distance to empty if the refueling amount is Symptom Cause Solution / Reference The compass display reads “C”. • Compass is not calibrated. bridges, subways, concentrations of • Compass was calibrated incorrectly or in the presence of a strong magnetic field. Perform calibration. Refer to Compass shows the wrong direction. Compass does not change direction ap- Compass does not show all the directions, The compass was calibrated but it “loses” On long trips the compass shows the Perform zone variation setting if correct |