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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 13 (ENGINE CONTROLS - PINPOINT TESTS (DIESEL))PINPOINT TESTS L: ENGINE OIL TEMPERATURE (EOT) SENSORTEST PROCEDURE
2021 Ford Edge SE, 4WD

Test Procedure

2021 Ford Edge SE, 4WDSECTION Test Procedure
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, 2018 Ford Transit-150, and 2018 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
  1. L1 CHECK FOR DTCS 

    Are DTCs P0195, P0196, P0197, P0198 or P1184 present? 

    Yes No
    GO to  L2. For symptoms without DTCs, GO to  L2.
    For all others, RETURN to SYMPTOM CHARTS for further direction.
  2. L2 CHECK SENSOR CONNECTIONS 
    • Inspect the EOT sensor circuitry at the sensor and PCM. Inspect for damaged, loose or pushed-out pins, and loose or poorly crimped wires.

    Is a concern present? 

    Yes No
    REPAIR as necessary.
    Clear the PCM DTCs. REPEAT the self-test.    		 GO to  L3.
  3. L3 CHECK FOR A OPEN 
    • Ignition OFF.
    • EOT Sensor connector disconnected.
    • For Transit,
    • PCM-E connector disconnected.
    • Measure the resistance between:
      (+) PCM-E Connector, Harness Side (-) EOT Sensor Connector, Harness Side
      EOT EOT
      SIGRTN SIGRTN
    • For all others,
    • PCM-B connector disconnected.
    • PCM-E connector disconnected.
    • Measure the resistance between:
      (+) PCM-E Connector, Harness Side (-) EOT Sensor Connector, Harness Side
      EOT EOT
    • Measure the resistance between:
      (+) PCM-B Connector, Harness Side (-) EOT Sensor Connector, Harness Side
      SIGRTN - Pin 44 SIGRTN

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  L4. REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.
  4. L4 CHECK THE EOT SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between:
      (+) EOT Sensor Connector, Harness Side (-)
      EOT Ground

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  L5. REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.
  5. L5 CHECK THE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) EOT Sensor Connector, Harness Side (-)
      EOT Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. GO to  L6.
  6. L6 CHECK THE EOT SENSOR OPERATION 
    NOTE: Strict observance of posted speed limits and attention to driving conditions are mandatory when carrying out the road test. Failure to follow these instructions may result in personal injury.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.