PINPOINT TEST AC : The Trailer Module (TRM) Does Not Respond To The Diagnostic Scan Tool: Notes
WARNING: This page is about a different car, the 2016 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 Trailer/Camper Adapter for schematic and connector information.
Normal Operation and Fault Conditions
The Trailer Module (TRM) communicates with the diagnostic scan tool through the MS-CAN.
Visual Inspection and Diagnostic Pre-checks
Verify BJB fuses 21 (30A) and 48 (40A) are OK.