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Home >> Lincoln >> 2021 >> Nautilus Base, FWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Passive Anti-Theft System (Pats) - Vehicles With: Phone As A Key >> Diagnosis And Testing >> Passive Anti-Theft System (PATS) >> Pinpoint Tests >> Pinpoint Test B: BLUETOOTH Antenna #5, #6, #7, #10 Circuit Faults- Multiple Diagnostic Codes

Pinpoint Test B: BLUETOOTH Antenna #5, #6, #7, #10 Circuit Faults- Multiple Diagnostic Codes

  1. Refer to REMOTE KEYLESS ENTRY AND ALARM for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RFA U200E:11 Control Module Output Power B: Circuit Short To Ground Sets when the RFA module detects a short to ground with bluetooth antennas #5, #6, #7, and #10
    RFA U200E:15 Control Module Output Power B: Circuit Short To Battery Or Open Sets when the RFA module detects a short to battery or open with bluetooth antennas #5, #6, #7, and #8
    RFA B1591:29 Antenna #5: Signal Invalid Sets when the RFA module detects an invalid signal from bluetooth antenna #5
    RFA B1591:31 Antenna #5: No Signal Sets when the RFA module detects an invalid signal from bluetooth antenna #5
    RFA B1591:45 Antenna #5: Program Memory Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #5
    RFA B1591:49 Antenna #5: Internal Electronic Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #5
    RFA B1591:57 Antenna #5: Invalid/Incompatible Software Component Sets when the RFA module detects an invalid signal from bluetooth antenna #5
    RFA B1592:29 Antenna #6: Signal Invalid Sets when the RFA module detects an invalid signal from bluetooth antenna #6
    RFA B1592:31 Antenna #6: No Signal Sets when the RFA module detects an invalid signal from bluetooth antenna #6
    RFA B1592:45 Antenna #6: Program Memory Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #6
    RFA B1592:49 Antenna #6: Internal Electronic Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #6
    RFA B1592:57 Antenna #6: Invalid/Incompatible Software Component Sets when the RFA module detects an invalid signal from bluetooth antenna #6
    RFA B1593:29 Antenna #7: Signal Invalid Sets when the RFA module detects an invalid signal from bluetooth antenna #7
    RFA B1593:31 Antenna #7: No Signal Sets when the RFA module detects an invalid signal from bluetooth antenna #7
    RFA B1593:45 Antenna #7: Program Memory Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #7
    RFA B1593:49 Antenna #7: Internal Electronic Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #7
    RFA B1593:57 Antenna #7: Invalid/Incompatible Software Component Sets when the RFA module detects an invalid signal from bluetooth antenna #7
    RFA B1596:29 Antenna #10: Signal Invalid Sets when the RFA module detects an invalid signal from bluetooth antenna #10
    RFA B1596:31 Antenna #10: No Signal Sets when the RFA module detects an invalid signal from bluetooth antenna #10
    RFA B1596:45 Antenna #10: Program Memory Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #10
    RFA B1596:49 Antenna #10: Internal Electronic Failure Sets when the RFA module detects an invalid signal from bluetooth antenna #10
    RFA B1596:57 Antenna #10: Invalid/Incompatible Software Component Sets when the RFA module detects an invalid signal from bluetooth antenna #10

    Possible Sources 

    • Wiring, terminals or connectors
    • Bluetooth Antenna #5 Exterior Front Door Handle RH
    • Bluetooth Antenna #6 Exterior Rear Door Handle LH
    • Bluetooth Antenna #7 Rear Exterior Antenna
    • Bluetooth Antenna #10 Floor Console Antenna
    • RFA module

    Visual Inspection and Pre-checks 

    • If the selection is available on the scan tool (Body>Security>Phone as a Key Functions), make sure the passive entry/passive start feature is enabled. If disabled, the vehicle only starts with the key in the backup starting location.

  2. B1 VERIFY DTC (DIAGNOSTIC TROUBLE CODE) IS STILL PRESENT

    • Turn off mobile device bluetooth.

    • Using a diagnostic scan tool, clear the RFA module Diagnostic Trouble Codes (DTCs)

    • Using a diagnostic scan tool, carry out the RFA module self-test

    Are any antenna related Diagnostic Trouble Codes (DTCs) present? 

    Yes  GO to  B2
    No  The system is operating correctly at this time. The concern may have been caused by invalid signal from the bluetooth.

  3. B2 CHECK THE BLUETOOTH ANTENNA VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect RFA module C3860.

    • Disconnect the suspect antenna.

    • Ignition ON.

    • Measure:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-8
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-8
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-3
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-3
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  B3

  4. B3 CHECK THE BLUETOOTH ANTENNA VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-8
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-8
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-3
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-3
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B4
    No  REPAIR the circuit.

  5. B4 CHECK THE BLUETOOTH ANTENNA VOLTAGE SUPPLY AND GROUND CIRCUITS FOR AN OPEN

    • Measure:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-8
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-2

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-8
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-2

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-3
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-2

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-3
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-2

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-1
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-1
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-1
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-1
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  B5
    No  REPAIR the circuit.

  6. B5 CHECK THE BLUETOOTH ANTENNA LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition ON.

    • Measure the suspect antenna:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-2
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-2
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-2
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-2
      GFD620822Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  B6

  7. B6 CHECK THE BLUETOOTH ANTENNA LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure the suspect antenna:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B7
    No  REPAIR the circuit.

  8. B7 CHECK THE BLUETOOTH ANTENNA LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

    • Measure:

      Bluetooth Antenna #5 

      Positive Lead Measurement / Action Negative Lead
      C693-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-1

      Bluetooth Antenna #6 

      Positive Lead Measurement / Action Negative Lead
      C799-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-11

      Bluetooth Antenna #7 

      Positive Lead Measurement / Action Negative Lead
      C4863-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-12

      Bluetooth Antenna #10 

      Positive Lead Measurement / Action Negative Lead
      C3871-2
      GFD620821Courtesy of FORD MOTOR COMPANY
      		 C3860-3

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new bluetooth antenna. REFER to: Exterior Front Door Handle . REFER to: Exterior Rear Door Handle . REFER to: Bluetooth Rear Exterior Antenna . REFER to: Bluetooth Floor Console Antenna . TEST the system for normal operation. If the concern is still present, GO to  B8
    No  REPAIR the circuit.

  9. B8 CHECK FOR CORRECT RFA (REMOTE FUNCTION ACTUATOR) MODULE OPERATION

    • Disconnect and inspect the RFA module connector C3860.

    • 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 RFA module 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 service articles: TSB, GSB, SSM, or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RFA module. REFER to: Remote Function Actuator (RFA) Module .
    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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