Pinpoint Test J: DTC U0155
WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- J1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Allow at least 10 seconds for all modules to wake up and prove out.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to J2.
- 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.
- J2 CHECK THE COMMUNICATION NETWORK
- Using a scan tool, carry out the network test.
- Does the IPC pass the network test?
- Yes : GO to J3.
- No : REFER to MODULE COMMUNICATIONS NETWORK .
- J3 RETRIEVE THE RECORDED DTCs FROM THE TBC MODULE AND IPC SELF-TESTS
- Enter the following diagnostic mode on the scan tool: Self Test - TBC Module.
- Record the TBC module DTCs.
- Enter the following diagnostic mode on the scan tool: Self Test - IPC.
- Is DTC U3003:16 (or B1318) or DTC U3003:17 (or B1317) recorded?
- Yes
: For TBC module DTC B1317, GO to PINPOINT TEST D .
For TBC module DTC B1318, GO to PINPOINT TEST E .
For IPC DTCs, REFER to INFORMATION CENTER - INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
- No : GO to J4.
- J4 CHECK FOR DTC U0155 SET IN OTHER MODULES
- Clear the DTCs.
- Ignition OFF.
- Wait at least 5 seconds to allow the TBC module to sleep (power down).
- Ignition ON.
- Allow at least 10 seconds for all modules to wake up and prove out.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0155:00 or DTC U0155 set in more than one module?
- Yes : INSTALL a new IPC. REFER to INFORMATION CENTER - INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . CLEAR the DTCs. REPEAT the IPC self-test.
- No : INSTALL a new TBC module. REFER to TRAILER BRAKE CONTROL (TBC) MODULE . TEST the system for normal operation.