Pinpoint Test L: Module Internal Fault
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
The TCCM and ATCM monitor the internal circuitry and memory for errors. If a fault is detected multiple times, a DTC is set.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition TCCM U3000: 04 Control Module: System Internal Failures This DTC sets if an internal error is detected while the clutch is on. INSTALL a new TCCM, REFER to: Transfer Case Control Module (TCCM) . . TCCM U3000: 49 Control Module: Internal Electronic Failure This DTC sets if voltage level vary across different internal circuit. INSTALL a new TCCM, REFER to: Transfer Case Control Module (TCCM) . . Possible Sources
- TCCM
- ATCM
- L1 INSTALL A NEW SUSPECT MODULE
- Ignition ON.
- Using a diagnostic scan tool, perform the ATCM self-test.
Is the ATCM detects internal electronic failure?
Yes CLEAR the DTC. CYCLE the ignition. CARRY OUT the ATCMKOEO self-test. RETRIEVE and RECORD all DTCs. Road test the vehicle, if the DTC returns, REFER to: All Terrain Control Module (ATCM) - Vehicles With: Center Console . . REFER to: All Terrain Control Module (ATCM) - Vehicles Without: Center Console . No The repair is complete.