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Home › Ford › 2017 › Transit-150 Base, 3.2L Eng VIN V › Repair and Diagnosis › Engine Performance › System › Engine Controls - Pinpoint Tests (Diesel) › Pinpoint Tests L: Engine Oil Temperature (EOT) Sensor › Test Procedure

Test Procedure

  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.
    NOTE: Verify no accessories are in use (engine block or oil heaters).
    • Ignition OFF.
    • PCM-B connector connected.
    • PCM-E connector connected.
    • EOT Sensor connector connected.
    • Clear the PCM DTCs.
    • Verify the engine temperature is at ambient temperature before continuing with this test. A soak period of 8 hours may be required.
    • Ignition ON, engine OFF.
    • Access the PCM and monitor the EOT (TEMP) PID.
    • Access the PCM and monitor the RPM (RPM) PID.
    • Record the EOT sensor temperature value.
    • Drive the vehicle at an engine speed greater than 1, 800 RPM for at least 15 minutes. Select the appropriate gear to achieve the operating conditions.

    Does the EOT sensor temperature value change by at least 6°C (10°F) from the ignition ON value recorded? 

    Yes No
    GO to  L7. INSTALL a new EOT sensor. REFER to the Service Information, Electronic Engine Controls.
    Clear the PCM DTCs. REPEAT the self-test.
  7. L7 CHECK THE COOLING SYSTEM 
    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.
    • Drive the vehicle an additional 15 minutes at an engine speed greater than 1, 800 RPM.

    Does the EOT sensor temperature reading increase above 50°C (122°F)? 

    Yes No
    Unable to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary.
    RETURN to SYMPTOM CHARTS for further direction.    		 CHECK the thermostat for correct operation. REFER to the Service Information, Engine Cooling, Component Tests to continue diagnosis. If a concern is present, INSTALL a new thermostat. REFER to the Service Information, Engine Cooling. If a thermostat concern is not present, INSTALL a new EOT sensor. REFER to the Service Information, Electronic Engine Controls.
    Clear the PCM DTCs. REPEAT the self-test.
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