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Test Procedure

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. D1 PRELIMINARY DIAGNOSIS 

    Is DTC P0016, P0315, P0335 or P0336 present? 

    Yes No
    GO to  D2. For symptoms without DTCs, GO to  D2.
    For all others, GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
  2. D2 CHECK THE CKP SENSOR SIGNAL SENT TO THE PCM 
    NOTE: The battery should be fully charged and the starting system should be functioning properly.
    • Ignition ON, engine OFF.
    • Access the PCM and monitor the RPM (RPM) PID.
    • Crank the engine.

    Is the RPM greater than 150 RPM? 

    Yes No
    For DTCs P0016, P0315, P0335 or P0336. GO to  D3.
    For all others, the CKP, PCM, and harness are working properly.
    RETURN to SYMPTOM CHARTS for further direction.    		 GO to  D3.
  3. D3 CHECK FOR VOLTAGE AT THE SENSOR 
    • Ignition OFF.
    • CKP Sensor connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CKP Sensor Connector, Harness Side (-) CKP Sensor Connector, Harness Side
      VREF - Pin 1 SIGRTN - Pin 2

    Is the voltage between 4.5 - 5.5 V? 

    Yes No
    GO to  D4. GO to Pinpoint Test B .
  4. D4 CHECK FOR AN OPEN IN THE HARNESS 
    • Ignition OFF.
    • PCM-E connector disconnected.
    • Measure the resistance between:
      (+) CKP Sensor Connector, Harness Side (-) PCM-E Connector, Harness Side
      CKP - Pin 3 CKP - Pin 33

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  D5. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  5. D5 CHECK FOR A SHORT BETWEEN CIRCUITS IN THE HARNESS 
    • Measure the resistance between:
      (+) CKP Sensor Connector, Harness Side (-)
      CKP - Pin 3 Ground
    • Measure the resistance between:
      (+) CKP Sensor Connector, Harness Side (-) CKP Sensor Connector, Harness Side
      CKP - Pin 3 VREF - Pin 1
      CKP - Pin 3 SIGRTN - Pin 2

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  D6. REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  6. D6 CHECK FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CKP Sensor Connector, Harness Side (-)
      CKP - Pin 3 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.    		 GO to  D7.
  7. D7 INTERMITTENT CHECK 
    NOTE: Chafed CKP or CMP wires or other physical damage to the harness may cause an intermittent short in the CKP or CMP circuit.
    • Ignition OFF.
    • CKP Sensor connector connected.
    • PCM-E connector connected.
    • Visually check for chafed CKP and CMP wires or other physical damage to the CKP or CMP harness.

    Is a concern present? 

    Yes No
    REPAIR as necessary.
    Clear the PCM DTCs. REPEAT the self-test.    		 For DTC P0016, GO to Pinpoint Test V .
    For all others, GO to  D8.
  8. D8 CHECK THE PHYSICAL CONDITION OF THE CKP SENSOR 
    • Check the CKP sensor for damage.

    Is the CKP sensor damaged? 

    Yes No
    INSTALL a new CKP sensor. REFER to the appropriate Electronic Engine Controls article.
    Clear the PCM DTCs. REPEAT the self-test.    		 INSTALL a new CKP sensor. REFER to the appropriate Electronic Engine Controls article.
    Clear the PCM DTCs. REPEAT the self-test. If the concern or DTC is still present,
    GO to  D9.
  9. D9 CHECK THE PHYSICAL CONDITION OF THE IGNITION PULSE CRANKSHAFT SENSOR RING 
    • Check the ignition pulse crankshaft sensor ring for damage.

    Is the ignition pulse crankshaft sensor ring damaged? 

    Yes No
    INSTALL a new ignition pulse crankshaft sensor ring. REFER to the appropriate Engine article, In-Vehicle Repair, Crankshaft Rear Seal for additional information. GO to  D10.
  10. D10 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.
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