Pinpoint Test V : The TELEMATIC Control Unit (TCU) Does Not Respond To The Diagnostic Scan Tool: Notes
WARNING: This page is about a different car, the 2018 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Module Communications Network for schematic and connector information.
Refer to Audio System/Navigation - Harman Revel Ultima Audio System for schematic and connector information.
Normal Operation and Fault Conditions
The TCU 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 translated through the GWM to the HS-CAN3.
Visual Inspection and Diagnostic Pre-checks
Verify BCM fuse 10 (5A) is OK.