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Inspection and Verification

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern by inspecting the vehicle and observing the message center (if equipped), the TPMS indicator and the tire pressure sensors.
    2. NOTE: If the tire pressure is adjusted to the cold placard pressure, the TPMS light may not immediately turn off. For additional information, Go To PINPOINT TEST F .
  2. Inspect to determine if one of the following mechanical or electrical concerns apply:
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Tire pressure
    • Non-OEM wheels installed (aftermarket rims)
    • TPMS sensor damaged or missing
    • Spare tire installed as a road wheel
    • Power distribution box (PDB):
      • fuse(s) 35 (10A)
      • 41 (15A)
    • Connectors or connections
    • Ground integrity
    • Harness routing
    • Wire chafing
    • Circuitry open/shorted
    • TPMS module missing or damaged
  3. If the inspection reveals an obvious concern(s) that can be readily identified, repair as required.
  4. If the concern remains after the inspection, connect the scan tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
    • check the connections to the vehicle.
    • check the ignition switch position.
    • verify that the battery voltage is between 10 and 16 volts. Refer to BATTERY & CHARGING SYSTEM
  5. If the scan tool still does not communicate with the vehicle, refer to the scan tool manual.
  6. Carry out the DATA LINK DIAGNOSTIC TEST. If the scan tool responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE COMMUNICATIONS NETWORK .
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the TPMS module.
  7. If the DTCs retrieved are related to the concern, refer to TIRE PRESSURE MONITOR MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX  to continue diagnostics.
  8. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART  to continue diagnostics.
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