Pinpoint Test K : U0140:00

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

K1 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using a diagnostic scan tool, carry out the Network Test.
Do the BCM and GWM pass the Network Test?

Yes GO to K2

No DIAGNOSE the BCM or GWM does not communicate with the diagnostic scan tool. REFER to: Communications Network .

K2 CHECK THE TBM (TRAILER BRAKE CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

Using a diagnostic scan tool, carry out the TBM self-test.

Clear the TBM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

Ignition ON.

Wait at least 10 seconds for all modules to wake up and prove out.

Using a diagnostic scan tool, carry out the TBM self-test.

Record the TBM Diagnostic Trouble Codes (DTCs).

Is DTC U0140:00 retrieved again?

Yes

GO to K3

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

K3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE TBM (TRAILER BRAKE CONTROL MODULE) SELF-TEST
- Review the recorded Diagnostic Trouble Codes (DTCs) from the TBM self-test.
Is DTC U3003:16 or U3003:17 present in the TBM?

Yes For DTC U3003:16, GO to Pinpoint Test G For DTC U3003:17, GO to Pinpoint Test F

No GO to K5

K4 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, carry out the BCM self-test.
Is DTC U3003:16 or U3003:17 present in the BCM?

Yes DIAGNOSE the BCM Diagnostic Trouble Codes (DTCs). REFER to: Body Control Module (BCM) .

No GO to K5

K5 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE GWM (GATEWAY MODULE A) SELF-TEST
- Using a diagnostic scan tool, carry out the GWM self-test.
Is DTC U3003:16 or U3003:17 present in the GWM?

Yes DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs). REFER to: Communications Network .

No GO to K6

K6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

Check the vehicle service history for recent service actions related to the BCM or TBM. If recent service history is found:
- verify the correct replacement module was installed.
  - HVBOM may be used to verify correct part fitment.
- verify the configuration of replacement module was correct.
  - re-configure the module using as-built data if prior configuration is suspect.
- verify the module was not obtained from a like vehicle and installed into customer vehicle.
  - return the swapped module to source vehicle and obtain new replacement module.

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to K7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

K7 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0140:XX SET IN OTHER MODULES

Using a diagnostic scan tool, carry out the self-test for all modules.

Retrieve the Continuous Memory Diagnostic Trouble Codes (CM DTCs) from all modules.

Is DTC U0140:xx set in 1 or more modules in addition to the TBM?

Yes	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM GUIDED ROUTINE TESTING

No	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new TBM. REFER to: Trailer Brake Control Module (TBM) .