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Pinpoint Test L: U0294:87

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  1. Normal Operation and Fault Conditions 

    The RGTM and the PCM communicate through the CAN. Messages are exchanged between the modules for the purposes of determining what functions are carried out.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RGTM U0294:87 Lost Communication With Powertrain Control Monitor Module: Missing Message Sets by the RGTM if expected data messages received from the PCM over the CAN are missing.

    Possible Sources 

    • Network communication concern
    • RGTM
    • PCM

  2. L1 VERIFY THE CUSTOMER CONCERN

    • Ignition ON.

    • Verify there is an observable symptom present.

    Is an observable symptom present? 

    Yes  GO to  L2
    No  CLEAR the DTC. The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

  3. L2 CHECK THE COMMUNICATION NETWORK

    • Using a diagnostic scan tool, carry out the network test.

    Does the PCM pass the network test? 

    Yes  GO to  L3
    No  REFER to: Controller Area Network (CAN) Module Communications Network . REFER to: Ethernet Module Communications Network .

  4. L3 CARRY OUT THE PCM (POWERTRAIN CONTROL MODULE) SELF-TEST

    • Using a diagnostic scan tool, carry out the PCMKOEO and KOER self-tests.

    Are any non-network Diagnostic Trouble Codes (DTCs) present? 

    Yes  DIAGNOSE all non-network DTCs. REFER to the PCM DTC Chart in the appropriate Electronic Engine Control article .
    No  GO to  L4

  5. L4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RGTM (REAR GATE TRUNK MODULE) SELF-TEST

    • Review the results from the RGTM self-test.

    Are any non-network Diagnostic Trouble Codes (DTCs) present? 

    Yes  DIAGNOSE all non-network DTCs. REFER to the DTC Chart(s) .
    No  GO to  L5

  6. L5 RECHECK THE RGTM (REAR GATE TRUNK MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, clear the RGTM Diagnostic Trouble Codes (DTCs).

    • Ignition OFF.

    • Ignition ON.

    • Wait 10 seconds.

    • Using a diagnostic scan tool, carry out the continuous memory self-test.

    • Check the RGTM Diagnostic Trouble Codes (DTCs).

    Is DTC U0294:87 still present? 

    Yes  GO to  L6
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

  7. L6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

    • Disconnect and inspect all PCM connectors.

    • Repair:

      • corrosion (install new connectors or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect all the PCM connectors and make sure they seat and latch correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    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 PCM REFER to: Powertrain Control Module (PCM) . REFER to: Powertrain Control Module (PCM) . REFER to: Powertrain Control Module (PCM) (303-14 Electronic Engine Controls). REFER to: Powertrain Control Module (PCM) . REFER to: Powertrain Control Module (PCM) . REFER to: Powertrain Control Module (PCM) .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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