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Pinpoint Test U : The Generic Function Module (GFM) (Cd Player) Does Not Respond To The Diagnostic Scan Tool: Notes

WARNING: This page is about a different car, the 2015 Lincoln MKZ. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Power Distribution/SJB for schematic and connector information.

Refer to Audio System/Navigation - Without Touchscreen for schematic and connector information.

Normal Operation and Fault Conditions 

The GFM communicates on the HS-CAN3. Diagnostic messages are sent/received between the DLC and the diagnostic scan tool through the HS-CAN2 circuits at the DLC, and are translated through the GWM to the HS-CAN3.

Possible Sources 

Visual Inspection and Diagnostic Pre-checks 

Verify BCM fuse 33 (20A) is OK.

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