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

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

C1 CHECK FOR THE CORRECT REMOTE KEYLESS ENTRY (RKE) TRANSMITTERS
- Check that the correct RKE transmitters are used with the vehicle.
  - Make sure the RKE transmitters are ones provided with the original equipment manufacturer (OEM) system and not from an aftermarket 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.
C2 CHECK THE OPERATION OF THE RKE TRANSMITTER
- 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 behavior.
- No : GO to C3.
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 .
C4 CHECK FOR COMPLETE FUNCTIONALITY OF THE RKE TRANSMITTER(S)
- Check all the RKE transmitter buttons for correct operation.
- Does the panic button operate correctly?
- Yes : GO to C5.
- No : GO to C1.
C5 MAKE SURE THE RKE TRANSMITTER SIGNAL IS BEING RECEIVED
- Connect the diagnostic tool.
- Enter the following diagnostic mode on 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.
- 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?
- Yes : GO to C6.
- No : GO to C7.
C6 CHECK IF THE RKE TRANSMITTERS ARE PROGRAMMED
- Enter the following diagnostic mode on the diagnostic tool: 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 RKE transmitter match any of the TICs stored in memory?
- Yes : GO to C8.
- No : PROGRAM all of the RKE transmitters. REFER to REMOTE KEYLESS ENTRY TRANSMITTER PROGRAMMING . INFORM the customer that any RKE transmitters not present need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
C7 CHECK THE RKE TRANSMITTER BATTERY
- Using a thin coin, open the RKE transmitter.
- Do not clean off any grease from the battery terminal on the back surface of the circuit board.
- Verify the correct battery is being used (CR2032).
- Remove the RKE transmitter battery and measure the voltage.
- Is the voltage greater than 2.5 volts?
- Yes : GO to C9.
- No : INSTALL a new battery. Make 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.
C8 CHECK IF THE RKE TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE VEHICLE SECURITY MODULE
- Retrieve continuous DTCs via the 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.
C9 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD RKE TRANSMITTER
- Enter the following diagnostic mode on the diagnostic tool: 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 RKE transmitter or a known good RKE transmitter that is correct for the vehicle, verify the RKE transmitter signal is being received.
- 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 KEYLESS ENTRY TRANSMITTER PROGRAMMING . INFORM the customer that any RKE transmitters not present need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
- No : GO to C10.
C10 CHECK THE VEHICLE SECURITY MODULE FOR CORRECT OPERATION
- Disconnect all the vehicle security module connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the 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 . PROGRAM all the RKE transmitters. REFER to REMOTE KEYLESS ENTRY TRANSMITTER PROGRAMMING . INFORM the customer that any transmitters not present will need to be programmed. CLEAR the DTCs. REPEAT the self-test.
- 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.