LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 561 (Anti-Theft System - Pats - (Except Hybrid)) >> Diagnosis And Testing >> Passive Anti-Theft System (PATS) - Pinpoint Tests >> Pinpoint Test C: Unprogrammed PATS Key >> Pinpoint Test C: Unprogrammed Pats Key

Pinpoint Test C: Unprogrammed Pats Key

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The PCM disables the engine for 1 second every time DTC B1601 is set. The ignition must remain in the RUN position for at least 1 second before an attempt is made to start the vehicle with any encoded ignition key. Check the PCM PID ANTI diagnostic for this unprogrammed key timeout status.
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 passive anti-theft system (PATS) ignition key may cause vehicle starting concerns 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 problem if they are too close to the key during engine start. If a problem occurs, turn the ignition to the OFF position 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 an approved encoded ignition key (encoded ignition keys from Huf, Rotunda, or Strattec are approved encoded ignition keys).
  1. C1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) 
    • Enter the following diagnostic mode on the diagnostic tool: CLEAR the PCM DTCs.
    • Key in OFF position.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: RETRIEVE the PCM DTCs.
    • Is DTC B1601 retrieved? 

    Yes  : GO to C2.

    No  : The system is OK. CHECK all the customer's encoded ignition keys by attempting to start the vehicle with each key to verify all other encoded ignition keys are programmed.

  2. C2 CHECK FOR PROGRAMMED ENCODED IGNITION KEYS - MONITOR THE PCM PID NUMKEYS 
    • Enter the following diagnostic mode on the diagnostic tool: PCM PID.
    • Monitor the PCM PID NUMKEYS.
    • Does the PCM PID NUMKEYS display 8? 

    Yes  : ERASE and REPROGRAM the key codes. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CLEAR the DTCs. REPEAT the self-test.

    No  : GO to C3.

  3. C3 CHECK THE NUMBER OF PROGRAMMED ENCODED IGNITION KEYS AVAILABLE 
    • Verify there are at least 2 currently programmed encoded ignition keys available with the vehicle.
    • Are at least 2 currently programmed encoded ignition keys available with the vehicle? 

    Yes  : GO to C4.

    No  : CUT a new encoded ignition key so that at least 2 encoded ignition keys are available. PROGRAM the encoded ignition keys. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . GO to  C5.

  4. C4 VERIFY THE PCM PID SPARE_KY INDICATES YES 
    • Monitor and record PID/DATA.
    • Monitor the PCM PID SPARE KY.
    • Does the PCM PID SPARE_KY indicate ENABLE? 

    Yes  : Spare key programming is enabled. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CLEAR the DTCs. REPEAT the self-test.

    No  : ENABLE the PCM PID SPARE_KEY. REFER to KEY PROGRAMMING SWITCH STATE CONTROL . CLEAR the DTCs. REPEAT the self-test.

  5. C5 CHECK THE ENCODED IGNITION KEYS FOR CORRECT OPERATION 
    • Key in OFF position.
    • Turn the ignition switch to RUN for 3 seconds using the first encoded ignition key.
    • Key in ON position.
    • Turn the ignition switch to RUN for 3 seconds using the second ignition key.
    • Start the vehicle using the second encoded ignition key.
    • Does the vehicle start? 

    Yes  : The system is OK. If there are additional keys that need to be programmed, REFER to KEY PROGRAMMING USING TWO PROGRAMMED KEYS .

    No  : GO to C6.

  6. C6 RETRIEVE THE DTCS - CHECK FOR DTC B1601 
    NOTE: When a new PCM is installed, the encoded ignition keys must be reprogrammed.
    • Enter the following diagnostic mode on the diagnostic tool: CLEAR the PCM DTCs.
    • Key in OFF position.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: RETRIEVE the PCM DTCs.
    • Is DTC B1601 retrieved? 

    Yes  : GO to C7.

    No  : If DTCs other than PATS PCM DTCs are retrieved, REFER to MULTIFUNCTION ELECTRONIC MODULES .

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

  7. C7 CHECK THE PCM FOR CORRECT 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 - 2.3L or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) . REPROGRAM the encoded ignition keys. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . 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.

scientia non olet · About LEMON Manuals