Pinpoint Test J : U0138:00: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Wiring Diagram Four Wheel Drive Systems for schematic and connector information.
Normal Operation
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0138:00 | Lost Communication with All Terrain Control Module | Sets in continuous memory in the TCCM if data messages received from the Terrain Management module through the GWM are missing for 5 seconds or longer. |
Possible Sources
- Communication concern
- GWM concern
- TCCM
- All-Terrain Control Module