Pinpoint Test I: DTC U0140
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- I1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to I2.
- No : The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
- I2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the BCM module pass the network test?
- Yes : GO to I3.
- No : REFER to MODULE COMMUNICATIONS NETWORK .
- I3 RETRIEVE THE RECORDED DTCs FROM THE TBC MODULE SELF-TEST
- Check for recorded TBC module DTCs from the self-test.
- Is DTC B1317 or DTC B1318 recorded?
- Yes
: For DTC B1317, GO to PINPOINT TEST D .
For DTC B1318, GO to PINPOINT TEST E .
- No : GO to I4.
- I4 RECHECK THE TBC MODULE DTCs NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out.
- Clear the DTCs. Repeat the TBC module self-test.
- Is DTC U0140 still present?
- Yes : GO to I5.
- 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.
- I5 CHECK FOR DTC U0140 SET IN OTHER MODULES
- Clear the DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using the scan tool, retrieve the continuous memory DTCs from all modules.
- Is DTC U0140 set in the PCM?
- Yes : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . REPEAT the BCM self-test.
- No : INSTALL a new TBC module. REFER to TRAILER BRAKE CONTROL (TBC) MODULE . TEST the system for normal operation.