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HOMESERVICE MANUALSFORD2005CROWN VICTORIA SPECIAL EDITIONREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSANTI-THEFT SYSTEMDIAGNOSIS AND TESTINGPASSIVE ANTI-THEFT SYSTEM (PATS) - PINPOINT TESTSPINPOINT TEST B: PATS IGNITION KEY TRANSPONDER SIGNAL IS NOT RECEIVED
2005 Ford Crown Victoria Special Edition

Pinpoint Test B: PATS Ignition Key Transponder Signal Is Not Received

2005 Ford Crown Victoria Special EditionSECTION Pinpoint Test B: PATS Ignition Key Transponder Signal Is Not Received
NOTE: Large metallic objects, electronic devices on the key chain that can be used to purchase gasoline or similar items, or a second key on the same key ring as the PATS ignition key may cause vehicle starting problems and record DTCs under certain conditions. If a fault cannot be identified, examine the customer's key ring for such objects or devices. If present, inform the customer that they need to keep these objects from touching the PATS ignition key while starting the engine. These objects and devices cannot damage the PATS ignition key, but can cause a momentary concern if they are too close to the key during engine start. If a concern occurs, turn ignition OFF and restart the engine with all other objects on the key ring held away from the ignition key. Check to make sure the encoded ignition key used by the customer is a Ford-approved encoded ignition key. (Rotunda and Strattec are the only approved encoded ignition keys.)
  1. B1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) 
    • Key in ON position.
    • Clear the continuous PCM DTCs.
    • Key in OFF position.
    • Key in ON position.
    • Retrieve PCM continuous DTCs.
    • Is DTC B1600 retrieved? 

    If no PATS DTCs are retrieved, the system is OK.

  2. B2 CHECK WITH A NEW ENCODED IGNITION KEY 
    NOTE: Check to make sure both the keys and the new encoded ignition keys are Ford-approved, encoded PATS ignition keys and the correct part number for this model year. Unapproved PATS keys do not always operate correctly over different temperature ranges. (Rotunda and Strattec are the only approved encoded ignition keys.)
    • Cut a new encoded ignition key.
    • Program the new encoded ignition key. Refer to SPARE KEY PROGRAMMING  in this article.
    • Clear PCM continuous DTCs.
    • Key in OFF position.
    • Key in ON position.
    • Retrieve PCM continuous DTCs.
    • Is DTC B1600 present? 

    If no PATS DTCs are retrieved, the system is OK.

  3. B3 INSTALL A NEW PATS TRANSCEIVER 
    • Key in OFF position.
    • Install a new PATS transceiver. Refer to PASSIVE ANTI-THEFT SYSTEM (PATS) TRANSCEIVER  in this article.
    • Key in ON position.
    • Clear the continuous DTCs.
    • Key in OFF position.
      • NOTE: Do not use the encoded ignition key that was programmed in Step  B2.
    • Turn the ignition to RUN using an existing customer encoded ignition key.
    • Retrieve PCM continuous DTCs.
    • Is DTC B1600 retrieved? 
    • Yes  : GO to  B4.
    • No  : The system is OK.
  4. B4 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all the PCM 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 PCM. REFER to ELECTRONIC ENGINE CONTROLS .

      PROGRAM the encoded ignition keys. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT  in this article. 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.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.