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Home >> Ford >> 2020 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission External Controls - 6-Speed Automatic Transmission - 6F35) >> Diagnosis And Testing >> External Controls >> Pinpoint Tests >> Pinpoint Test M : DTC U0155

Pinpoint Test M : DTC U0155

WARNING: This page is about a different variant/trim than selected.
  1. Refer to Module Communications Network for schematic and connector information.

    Normal Operation and Fault Conditions 

    The IPC, GSM and TRCM use information contained in messages on the HS-CAN.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    GSM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information This DTC sets if the TRCM and/or the GSM does not receive some or all of an expected message from the IPC.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
    • BJB fuse 13 (7.5A)
    • IPC

  2. M1 CHECK THE COMMUNICATION NETWORK

    • Ignition ON.

    • Using the diagnostic scan tool, perform the network test.

    Does the IPC module pass the network test? 

    Yes  For GSM, GO to  M2 For TRCM, GO to  M4
    No  To diagnose the module does not respond to the scan tool, REFER to: Communications Network .

  3. M2 CHECK FOR GSM (GEAR SHIFT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    NOTE: If a GSM self-test is performed, the driver door must be closed and locked. A false P166B and/or P081F DTC sets if the driver door is opened or unlocked during the self-test.

    • Clear all DTCs.

    • Using the diagnostic scan tool, perform the GSM self-test.

    Is DTC U0155 present? 

    Yes  GO to  M3
    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.

  4. M3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE GSM (GEAR SHIFT MODULE) SELF-TEST

    • Check for DTCs from the self-test.

    Are any non-network GSM DTCs present? 

    Yes  REFER to the DTC Chart - GSM  and diagnose those DTCs first.
    No  GO to  M6

  5. M4 CHECK FOR TRCM (TRANSMISSION RANGE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Clear all DTCs.

    • Using the diagnostic scan tool, perform the TRCM self-test.

    Is DTC U0155 present? 

    Yes  GO to  M5
    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.

  6. M5 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE TRCM (TRANSMISSION RANGE CONTROL MODULE) SELF-TEST

    • Check for DTCs from the self-test.

    Are any non-network TRCM DTCs present? 

    Yes  REFER to the DTC Chart - TRCM  and diagnose those DTCs first.
    No  GO to  M6

  7. M6 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

    • Using the diagnostic scan tool, perform the IPC self-test.

    • Check for DTCs from the self-test.

    Is DTC U3000:49 present? 

    Yes  REFER to: Instrumentation, Message Center and Warning Chimes .
    No  GO to  M7

  8. M7 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0155 SET IN OTHER MODULES

    • Using the diagnostic scan tool, perform the self-test for all modules.

    • Retrieve the DTCs from all modules.

    Is DTC U0155 present in the PCM or SCCM? 

    Yes  CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new IPC. Refer to IPC Guided Routine Testing .
    No  If the reporting module is the GSM, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) . If the reporting module is the TRCM, INSTALL a new TRCM. REFER to: Transmission Range Control Module (TRCM) .
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