LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Controls - Pinpoint Tests (Diesel)) >> Pinpoint Test C: Crankcase Ventilation Sensor >> Test Procedure

Test Procedure

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK FOR DTCS 

    Are DTCs P04DB, P04E2 or P04E3 present? 

    Yes No
    GO to C2  . RETURN to ENGINE CONTROLS - SYMPTOM CHARTS (DIESEL) , Symptom Charts for further direction.
  2. C2 CHECK THE CRANKCASE VENTILATION SENSOR FOR DAMAGE 
    • Ignition OFF.
    • Inspect the crankcase ventilation sensor connector for damaged or corroded pins.
    • Inspect the crankcase ventilation sensor for misalignment and incorrect installation.
    • Inspect the crankcase ventilation sensor for damage.
    • Inspect the turbocharger inlet surface for debris, or dirt that could cause an incorrect connection.

    Is a concern present? 

    Yes No
    REPAIR as necessary.
    REFER to the appropriate Engine Emission Control article.
    CLEAR the DTCs. REPEAT the self-test.    		 GO to C3  .
  3. C3 CHECK THE VOLTAGE TO THE CRANKCASE VENTILATION SENSOR 
    • Crankcase Ventilation Sensor connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-) Crankcase Ventilation Sensor Connector, Harness Side
      VBPWR - Pin 1 SIGRTN - Pin 3

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  C7. GO to C4  .
  4. C4 CHECK FOR AN OPEN 
    • Ignition OFF.
    • PCM-E connector disconnected. Measure the resistance between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-) PCM-E Connector, Harness Side
      VBPWR - Pin 1 VBPWR - Pin 14
      SIGRTN - Pin 3 SIGRTN - Pin 4

    Are the resistances less than 5 ohms? 

    Yes No
    GO to C5  . REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.
  5. C5 CHECK THE CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-)
      VBPWR - Pin 1 Ground
      SIGRTN - Pin 3 Ground

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  C10. REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.
  6. C6 CHECK FOR A SHORT TO VOLTAGE 
    • Measure the voltage between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-)
      VBPWR - Pin 1 Ground
      SIGRTN - Pin 3 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. GO to  C10.
  7. C7 CHECK THE CRNKCSVT CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • PCM-E connector disconnected.
    • Measure the resistance between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-) PCM-E Connector, Harness Side
      CRNKCSVT - Pin 2 CRNKCSVT - Pin 75

    Is the resistance less than 5 ohms? 

    Yes No
    GO to C8  . REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.
  8. C8 CHECK THE CRNKCSVT CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-)
      CRNKCSVT - Pin 2 Ground

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to C9  . REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.
  9. C9 CHECK THE CRNKCSVT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) Crankcase Ventilation Sensor Connector, Harness Side (-)
      CRNKCSVT - Pin 2 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. GO to C10  .
  10. C10 CHECK THE CRANKCASE VENTILATION SENSOR FOR CORRECT OPERATION 
    • Ignition OFF.
    • Crankcase Ventilation Sensor connector connected.
    • PCM-E connector connected.
    • Ignition ON, engine OFF.
    • Access the PCM and monitor the CC_VENTHOSE_V (VOLT) PID.
    • Record the CC_VENTHOSE_V PID value.
    • Crankcase Ventilation Sensor connector disconnected.

    Does the PID value change? 

    Yes No
    INSTALL a new Crankcase Ventilation sensor. REFER to the appropriate Engine Emission Control article.
    Clear the PCM DTCs. REPEAT the self-test.    		 GO to C11  .
  11. C11 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Visually inspect for:
      • pushed out pins.
      • corrosion.
    • Connect all the PCM connectors and make sure they seat correctly.
    • Carry out the PCM self-test.
    • Verify the concern is still present.

    Is the concern still present? 

    Yes No
    INSTALL a new PCM.
    REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .    		 The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
scientia non olet · About LEMON Manuals