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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 859 (Information Center (F250-F550)) >> Diagnostic Tests >> Information And Message Center >> Pinpoint Tests >> Pinpoint Test C: The Compass Is Inaccurate >> Pinpoint Test C: The Compass Is Inaccurate

Pinpoint Test C: The Compass Is Inaccurate

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 DEMAGNETIZE THE VEHICLE 
    • Demagnetize the vehicle. Refer to Vehicle Demagnetizing  in this article.
    • Does the compass calibrate correctly? 
    1. YES  : Go to  C2.
    2. NO  : INSTALL a new compass sensor module. SET the zone. REFER to Compass Zone Adjustment  in this article. CALIBRATE the compass. REFER to Compass Calibration  in this article. TEST the system for normal operation.
  2. C2 CHECK THE COMPASS ACCURACY 
    • Position the vehicle and observe the compass display as follows:
      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? 
    1. YES  : The compass is OK.
    2. NO  : INSTALL a new compass sensor module. SET the zone. REFER to Compass Zone Adjustment  in this article. CALIBRATE the compass. REFER to Compass Calibration  in this article. TEST the system for normal operation.
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