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Passive Anti-Theft System (PATS) - Inspection and Verification

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The new instrument cluster must be reconfigured after installation. Refer to MODULE COMMUNICATIONS NETWORK - LS .
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical and electrical damage.

    Visual Inspection Chart 

    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Large metallic objects, a second PATS key on the same key ring as the PATS key or electronic devices on the key chain that can be used to purchase gasoline or similar items
    • ignition lock cylinder
    • PATS key
    • Use of a non-PATS key
    • More than one PATS key on the customer's key chain
    • Central junction box (CJB) fuse 24 (5A)
    • Instrument cluster
    • PATS transceiver module
    • Ignition switch
    • Loose or corroded connection(s)
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition key position.
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP+, SCP-, ISO or UBP circuit fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK - LS .
    • No response/not equipped for instrument cluster, refer to INFORMATION, GAUGES & WARNING DEVICES .
    • No response/not equipped for PCM, refer to INTRODUCTION article in ENGINE PERFORMANCE .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the instrument cluster.
  7. If the DTCs retrieved are related to the concern, go to the INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
  8. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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