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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1870 (Electrical Compass - Electronic Compass) >> Diagnosis And Testing >> Electronic Compass >> Pinpoint Tests >> Pinpoint Test B: The Compass Is Inaccurate >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The compass display (located in the Front Display Interface Module (FDIM)) receives battery voltage from the Smart Junction Box (SJB) fuse 14 (10A). The compass module (integral to the interior rear view mirror) provides vehicle directional inputs to the Instrument Cluster (IC), which sends the compass information to the FDIM  over the Medium Speed Controller Area Network (MS-CAN). The FDIM  displays the compass direction according to the information that has been provided by the compass module to the IC  .

This pinpoint test is intended to diagnose the following: 

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