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Pinpoint Test C : B10D9:87

  1. C1 RETRIEVE THE BCM DTCs FROM THE SELF-TEST

    • Using a scan tool, perform the BCM self-test.

    Is DTC C113A:11 or C113A:15 recorded? 

    Yes  GO to Pinpoint Test D .
    No  GO to  C2.

  2. C2 CHECK FOR VOLTAGE TO THE PATS TRANSCEIVER

    • Disconnect: PATS Transceiver.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C252-1
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 C252-2

    Is the voltage greater than 11 volts? 

    Yes  GO to  C4.
    No  GO to  C3.

  3. C3 CHECK THE PATS TRANSCEIVER VOLTAGE SUPPLY CIRCUIT

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C252-1
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  REPAIR the PATS transceiver ground circuit for an open.
    No  VERIFY the BCM fuse 18 (10A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short.

  4. C4 CHECK THE PATS TRANSCEIVER CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: BCM C2280B.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C252-3
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground
      C252-4
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the affected circuit.
    No  GO to  C5.

  5. C5 CHECK THE PATS TRANSCEIVER CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C252-3
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Ground
      C252-4
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  C6.
    No  REPAIR the affected circuit.

  6. C6 CHECK THE PATS TRANSCEIVER CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-37
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C252-3
      C2280B-36
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C252-4

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new PATS transceiver. Refer to Passive Anti-Theft System (PATS) Transceiver . CLEAR the DTCs. REPEAT the BCM self-test. If DTC B10D9:87 is retrieved again, GO to  C7.
    No  REPAIR the affected circuit.

  7. C7 CHECK FOR CORRECT BCM OPERATION

    • Ignition OFF.
    • Disconnect and inspect all BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect all the BCM connectors. 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 BCM. REFER to Multifunction Electronic Modules .
    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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