PINPOINT TEST Z : The Transfer Case Control Module (TCCM) Does Not Respond To The Diagnostic Scan Tool: Notes
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. 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 Four Wheel Drive Systems for schematic and connector information.
Normal Operation and Fault Conditions
The TCCM communicates with the diagnostic scan tool through the HS-CAN.
Visual Inspection and Diagnostic Pre-checks
Verify BJB fuse 20 (20A) (Expedition only), fuse 27 (20A), fuse 29 (10A) and BCM fuse 37 (10A) are OK.