LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2005 >> Excursion 5.4 L, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Handles, Locks, Latches And Entry Systems >> Diagnosis And Testing >> Locks, Latches and Entry Systems - Module Controlled >> Pinpoint Tests >> Pinpoint Test C: The Doors Do Not Lock/Unlock Using The Remote Keyless Entry (RKE) Transmitter
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test C: The Doors Do Not Lock/Unlock Using The Remote Keyless Entry (RKE) Transmitter

NOTE: All RKE transmitters must be present to begin diagnosis of the RKE system.
NOTE: Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.
  1. C1 CHECK FOR THE CORRECT RKE TRANSMITTERS 
    • Check that the correct RKE transmitters are used with the vehicle.
      • Make sure the RKE transmitters are ones provided with the OEM system and not from an aftermarket system, or a dealer-installed system that may have been installed on the vehicle.
    • Are all the correct RKE transmitters present? 
    • Yes  : GO to C2.
    • No  : The system cannot be tested without the correct RKE transmitters. INFORM the customer that all the correct RKE transmitters need to be present to proceed with diagnosis of the system.
  2. C2 CHECK THE OPERATION OF THE RKE TRANSMITTER WITH THE KEY IN THE OFF POSITION 
    • Key in OFF position.
    • Check the operation of the RKE transmitter.
    • Does the system operate correctly now? 
    • Yes  : The system is operating as designed. INFORM the customer of the correct vehicle operation.
    • No  : GO to C3
  3. C3 CHECK THE POWER DOOR LOCK SYSTEM FOR CORRECT OPERATION 
    • Verify the door lock/unlock operation by actuating the driver DOOR LOCK CONTROL SWITCH .
    • Do all the doors lock and unlock correctly? 
    • Yes  : GO to C4.
    • No  : To diagnose the inoperative door locks, Go to PINPOINT TEST A .
  4. C4 CHECK FOR THE COMPLETE FUNCTIONALITY OF THE RKE TRANSMITTER(S) 
    • Check all the RKE transmitter buttons for correct operation.
    • Do any of the other buttons (panic button) operate correctly? 
    • Yes  : REPLACE the inoperative RKE transmitter. REPROGRAM all RKE transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING  in this article. INFORM the customer that any RKE transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to C5.
  5. C5 MAKE SURE THE RKE TRANSMITTER SIGNAL IS BEING RECEIVED 
    • Connect the diagnostic tool.
    • Enter the vehicle security module function tests, RKE transmitter test or program RKE transmitter.
    • Monitor the RKE transmitter identification code (TIC) through the diagnostic tool menus.
    • NOTE: The vehicle must be electronically unlocked prior to using any diagnostic tools (through the RKE transmitter or DOOR LOCK CONTROL SWITCH ). Verify the RKE transmitter signal is being received. Using a diagnostic tool, press a button on the RKE transmitter while observing the diagnostic tool.
    • Does the TIC show up on the diagnostic tool screen when a button is pressed on the RKE transmitter? 
    • Yes  : GO to C6.
    • No  : GO to C7.
  6. C6 CHECK IF THE RKE TRANSMITTERS ARE PROGRAMMED 
    • Enter the vehicle security module function tests, RKE transmitter test or program RKE transmitter.
    • Monitor the RKE transmitter TIC/DATA through the diagnostic tool menus.
    • Verify the RKE transmitters are programmed to the vehicle.
    • Does the TIC displayed under current RKE transmitter match any of the TICs stored in memory? 
    • Yes  : GO to C8.
    • No  : PROGRAM all of the RKE transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING  in this article. INFORM the customer that any RKE transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
  7. C7 CHECK THE RKE TRANSMITTER BATTERY 
    • RKE transmitter battery removal:
      • Using a thin coin, open the RKE transmitter.
      • Do not clean off any grease from the battery terminals on the back surface of the circuit board.
      • Remove the battery.
      • Verify the correct battery is used (CR2032).
    • Measure the RKE transmitter battery voltage.
    • Is the RKE transmitter battery voltage greater than 2.5 volts? 
    • Yes  : GO to C9.
    • No  : INSTALL a new battery (be sure the battery is seated correctly). DO NOT reprogram the RKE transmitters (faulty or dead batteries do not erase TICs from memory). CLEAR the DTCs. TEST the system for normal operation.
  8. C8 CHECK IF THE RKE TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE VEHICLE SECURITY MODULE 
    • The vehicle must be electronically unlocked prior to using any diagnostic tools (through the RKE transmitter or the DOOR LOCK CONTROL SWITCH ).
    • Retrieve continuous DTCs through diagnostic tool.
    • Is continuous DTC B2425 stored in the vehicle security module? 
    • Yes  : To diagnose the RKE transmitter out of synchronization, Go to PINPOINT TEST G .
    • No  : GO to C9.
  9. C9 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE TRANSMITTER 
    • The vehicle must be electronically unlocked prior to using any diagnostic tools (through the RKE transmitter or the DOOR LOCK CONTROL SWITCH ).
    • Enter the vehicle security module function tests, RKE transmitter test or program RKE transmitter.
    • Monitor the RKE transmitter TIC/DATA through the diagnostic tool menus.
    • Using the customer's second RF device (RKE transmitter) or a known good RF device (RKE transmitter) that is correct for the vehicle, verify the RKE transmitter signal is being received by the vehicle security module.
    • Does the TIC show up on the diagnostic tool when a button is pressed on the RKE transmitter? 
    • Yes  : REPLACE the inoperative RKE transmitter. PROGRAM all RKE transmitter(s). REFER to REMOTE TRANSMITTER PROGRAMMING  in this article. INFORM the customer that any RKE transmitter(s) not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to C10.
  10. C10 CHECK THE VEHICLE SECURITY MODULE FOR CORRECT OPERATION 
    • Disconnect all vehicle security module connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all vehicle security module connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new vehicle security module. refer to MULTIFUNCTION ELECTRONIC MODULES . REPROGRAM all RKE transmitters. REFER to REMOTE TRANSMITTER PROGRAMMING  in this article. INFORM the customer that any RKE transmitters not present will need to be reprogrammed. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
scientia non olet · About LEMON Manuals