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Inspection and Verification

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: If equipped with the fire suppression system, refer to FIRE SUPPRESSION SYSTEM for important safety warnings.
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Washer fluid level
    • Fuel level
    • Engine coolant level
    • Engine oil level
    • Accessory drive belt
    • Door/decklid closures
    • Instrument cluster
    • Message center switches
    • Circuitry
  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 (DLC) 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 switch 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 or CAN circuit fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
    • No response/not equipped for the instrument cluster, refer to INSTRUMENT CLUSTER .
    • No response/not equipped for the lighting control module (LCM), refer to MULTIFUNCTION ELECTRONIC MODULES .
    • 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, refer to the INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) INDEX  or the LIGHTING CONTROL MODULE (LCM) DTC INDEX .
  8. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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