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Pinpoint Test Y: U0258:87 Or U1A00:00

  1. Y1 CHECK IF THE RTM (RADIO TRANSCEIVER MODULE) AND THE BCM (BODY CONTROL MODULE) PASS THE NETWORK TEST

    • Ignition ON.

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

    Does the RTM and the BCM pass the network test? 

    Yes  GO to  Y2
    No 

  2. Y2 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

    • Disconnect RTM C9026.

    • Disconnect BCM C2280G.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9026-2
      GFD598033Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  Y3

  3. Y3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

    • Connect BCM C2280G.

    • Ignition OFF.

    • Disconnect BCM C2280G.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9026-2
      GFD598030Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  Y4
    No  REPAIR the circuit.

  4. Y4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9026-2
      GFD598030Courtesy of FORD MOTOR COMPANY
      		 C2280G-26

    Is the resistance less than 3 ohms? 

    Yes  GO to  Y5
    No  REPAIR the circuit.

  5. Y5 CHECK FOR CORRECT RTM (RADIO TRANSCEIVER MODULE) OPERATION

    • Disconnect and inspect the RTM connector.

    • 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 the RTM connector and make sure it seats and latches correctly.

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

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RTM. REFER to: Radio Transceiver Module (RTM) . TEST the system for normal operation. If the concern is still present, GO to  Y6
    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.

  6. Y6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Disconnect and inspect all the BCM 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 the BCM 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, A guided routine is not applicable for this vehicle and market. Replace the component that was faulted through diagnosis.
    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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