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Pinpoint Test B: The Compass Is Inaccurate

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Always set the zone and calibrate the compass before replacing an inaccurate compass.
  1. B1 CHECK THE COMPASS ACCURACY 
    • Position the vehicle and observe the compass display as follows:
      COMPASS DISPLAY REFERENCE TABLE

      Direction Compass Display
      North N
      Northeast NE
      East E
      Southeast SE
      South S
      Southwest SW
      West W
      Northwest NW
    • Does the compass display as indicated? 
    • Yes  : The compass is OK. The concern may have been caused by an incorrect zone setting, or the compass was out of calibration.
    • No  : INSTALL a new compass module. REFER to Auto-Dimming Interior Mirror in REAR VIEW MIRRORS -- FUSION, MILAN & MKZ article. SET the zone. REFER to COMPASS ZONE ADJUSTMENT  in this service information. CALIBRATE the compass. REFER to COMPASS CALIBRATION  in this service information. TEST the system for normal operation.
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