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Econoline, Expedition & Navigator

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Lincoln Navigator, 2002 Ford Expedition, 2001 Lincoln Navigator, 2001 Ford RV Cutaway, and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure transmission harness connector is fully seated, terminals are fully engaged and in good condition. Repair as necessary. If items have been inspected, go to next step. If items have not been inspected, erase DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition switch to OFF position. Disconnect transmission 12-pin harness connector. Inspect condition of connector for damaged terminals, corrosion and loose wires. Repair as necessary. Connect DVOM positive lead to terminal No. 7 and negative lead to terminal No. 8 at transmission 12-pin harness connector. Turn ignition switch to ON position. If voltage is 4.75-5.25 volts, go to step  6. If voltage is not 4.75-5.25 volts, go to next step.
  3. Turn ignition switch to OFF position. Disconnect PCM 104-pin harness connector, and inspect for damaged terminals, corrosion and loose wires. Repair as necessary. Install breakout box, leaving PCM harness connector disconnected. Measure and record resistance between breakout box terminal No. 37 and transmission harness connector terminal No. 7. See Figure and Figure . Measure and record resistance between breakout box terminal No. 91 and transmission harness connector terminal No. 8. If each resistance reading is less than 5 ohms, go to next step. If any resistance reading is 5 ohms or more, repair open circuit. Remove breakout box and connect all components. Erase DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM.
  4. Ensure ignition switch is turned to OFF position and PCM 104-pin harness connector is disconnected. Using DVOM, measure and record resistance between breakout box terminal No. 37 and breakout box terminals No. 71 and 97. See Figure. Measure and record resistance between breakout box terminal No. 37 and breakout box terminals No. 51, 76, 77, 91, 103, and chassis ground. If any resistance reading is 10 k/ohms or less, repair circuits as necessary. Disconnect breakout box, reconnect all connectors. Repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM. If each resistance reading is more than 10 k/ohms, go to next step.
    5. NOTE: DTC P0712 is set if resistance is less than 597 ohms (short circuit). DTC P0713 is set if resistance exceeds 1062 k/ohms (open circuit).
  5. Install transmission tester. Set tester Bench/Drive switch to BENCH MODE. Set Solenoid Select switch to OHMS CHECK. Connect ohmmeter leads to appropriate TFT sensor terminals on tester. Measure and record resistance. Resistance should be within specification. See TFT SENSOR TEMPERATURE/RESISTANCE SPECIFICATION  table. If resistance reading is within specification for specific temperature, either warm up transmission or allow transmission to cool to check resistance at different temperatures. If resistance remains within specification, go to next step. If resistance reading is not within specification, replace solenoid body assembly. Connect all components. Erase DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM.
  6. Check continuity between BAT (-) tester terminal and both TFT sensor terminals. If continuity exists, replace solenoid body assembly. Erase all DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM. If continuity does not exist, replace PCM. RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM. If DTCs are still present, check transmission fluid condition. Check for overheat condition. See TRANSMISSION OVERHEATING in appropriate SYMPTOM DIAGNOSIS under TROUBLE SHOOTING .
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