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Pinpoint Test Al : The RKE Transmitter Is Inoperative

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. AL1 CHECK FOR THE CORRECT PASSIVE KEYS

    NOTE: A least 2 programmed passive keys must be present to begin diagnosis of the RKE system.

    • Check that the correct passive keys are used with the vehicle.

    Are there at least 2 correct passive keys present? 

    Yes  GO to  AL2.
    No  The system cannot be tested without the correct passive keys. INFORM the customer that at least 2 correct passive keys must be present to proceed with diagnosis of the system.

  2. AL2 CHECK THE RKE OPERATION WHEN THE RADIO TRANSCEIVER MODULE (RTM) IS IN AN AWAKE MODE

    • Open and close the driver door.
    • Press any button on the suspect passive key.

    Does the RKE feature operate? 

    Yes  GO to  AL3.
    No  GO to  AL4.

  3. AL3 CHECK THE RKE OPERATION WHEN THE RADIO TRANSCEIVER MODULE (RTM) IS IN A SLEEP MODE

    • Ignition OFF.
    • Let the vehicle sit for 10 minutes to allow the vehicle modules to go into a sleep mode.
    • Press any button on the suspect passive key.

    Does the RKE feature operate? 

    Yes  The system is operating correctly at this time.
    No  GO to  AL13.

  4. AL4 CHECK FOR RFA MODULE DTC B10AB:06 OR U201F:31

    • Ignition ON.
    • Using a diagnostic scan tool, perform the RFA module self-test.

    Is DTC B10AB:06 OR U201F:31 present? 

    Yes  For DTC B10AB:06, GO to  AL5.For DTC U201F:31, GO to  AL9.
    No  If an individual passive key has no RKE functionality, GO to  AL7.If both passive keys have no RKE functionality, GO to  AL9.

  5. AL5 RESYNCHRONIZE THE INOPERATIVE PASSIVE KEY

    • Ignition OFF.
    • Ignition ON.
    • Ignition OFF.
    • Press any button on the suspect passive key 4 times consecutively within 30 seconds.

    Does the passive key operate correctly? 

    Yes  The system is OK. The concern was caused by a passive key out of synchronization.
    No  GO to  AL6.

  6. AL6 RESYNCHRONIZE THE INOPERATIVE PASSIVE KEY USING THE SECOND PASSIVE KEY

    • Ignition OFF.
    • Press a button on the operational passive key.
    • Within 30 seconds, press a button on the suspect passive key.
    • Check the suspect passive key for correct RKE operation.

    Does the suspect passive key operate? 

    Yes  The system is OK. The concern was caused by a passive key out of synchronization.
    No  GO to  AL7.

  7. AL7 CHECK IF THE PASSIVE KEY IS PROGRAMMED TO THE VEHICLE

    • Place the suspect passive key in the backup starting location.
    • Press the START/STOP button.

    Does the ignition state change out of OFF? 

    Yes  GO to  AL8.
    No  DIAGNOSE the PATS. REFER to Anti-Theft Passive Anti-Theft System (PATS) .

  8. AL8 CHECK THE PASSIVE KEY BATTERY

    • Remove the IKT battery. Refer to the Owner Guide for battery removal instructions.
    • Do not clean off any grease from the battery terminals on the back surface of the circuit board.
    • Verify the correct battery is used (CR2032).
    • Remove the passive key battery and measure the voltage.

    Is the voltage greater than 2.5 volts? 

    Yes  REPLACE the suspect passive key. PROGRAM the new passive key. REFER to Key Programming Using Diagnostic Equipment in Anti-Theft Passive Anti-Theft System (PATS) .
    No  INSTALL a new battery (make sure the battery is seated correctly). DO NOT reprogram the passive key (weak or dead batteries do not erase passive keys from memory).

  9. AL9 CHECK FOR COMMUNICATION WITH THE RADIO TRANSCEIVER MODULE (RTM)

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

    Does the Radio Transceiver Module (RTM) pass the network test? 

    Yes  GO to  AL10.
    No  DIAGNOSE the Radio Transceiver Module (RTM) not responding to the scan tool. REFER to Module Communications Network .

  10. AL10 CHECK THE RADIO TRANSCEIVER MODULE (RTM) LIN CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Place the passive key in the backup starting location.
    • Disconnect: Radio Transceiver Module (RTM) C9047 .
    • Disconnect: RFA Module C4392C .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9047-3
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  AL11.

  11. AL11 CHECK THE RADIO TRANSCEIVER MODULE (RTM) LIN CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9047-3
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  AL12.
    No  REPAIR the circuit.

  12. AL12 CHECK THE RADIO TRANSCEIVER MODULE (RTM) LIN CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9047-3
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4392C-1

    Is the resistance less than 3 ohms? 

    Yes  GO to  AL13.
    No  REPAIR the circuit.

  13. AL13 CHECK FOR CORRECT RADIO TRANSCEIVER MODULE (RTM) OPERATION

    NOTE: The Radio Transceiver Module (RTM) is also known as the TPM module.

    • Disconnect and inspect the Radio Transceiver Module (RTM) connector.
    • 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 the Radio Transceiver Module (RTM) connector. 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 On-Line Automotive Service Information System(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 TPM module. REFER to Tire Pressure Monitoring System (TPMS) .TEST the system for normal operation. If the concern is still present, GO to  AL14.
    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.

  14. AL14 CHECK FOR CORRECT RFA MODULE OPERATION

    • Disconnect and inspect all the RFA module 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 the RFA module 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 On-Line Automotive Service Information System(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 RFA module. 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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