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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2732 (Engine Controls - Pinpoint Test DL: Cylinder Head Temperature (CHT) Sensor Through Pinpoint Test DX: Engine Coolant Temperature (ECT) Sensor - (Except Diesel & Hybrid)) >> Pinpoint Test DR: Camshaft Position (CMP) Sensor >> Test Procedure

Test Procedure

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
  1. DR1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 

    Are DTCs P0340, P0341, P0344, P0345, P0346, P0349, P0365, P0366, P0369, P0390, P0391, or P0394 present? 

    Yes No
    GO to  DR2. For all others, GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
  2. DR2 DTCS P0340, P0341, P0344, P0345, P0346, P0349, P0365, P0366, P0369, P0390, P0391 AND P0394: CHECK IF THE ENGINE STARTS 
    • Attempt to start the engine.

    Does the engine start? 

    Yes No
    GO to  DR3. RETURN to SYMPTOM CHARTS for further direction.
  3. DR3 CLEAR AND ATTEMPT TO RETRIEVE THE DTC 
    NOTE: If DTCs P0340, P0341, P0344, P0345, P0346, P0349, P0365, P0366, P0369, P0390, P0391, or P0394 are present, ignition, alternator noise, RFI and CKP concerns should be considered.
    NOTE: For vehicles with variable camshaft timing (VCT), concerns with the engine oil level, oil filter, oil contamination, or the VCT system may cause camshaft positioning errors.
    • Ignition ON, engine OFF.
    • Clear the PCM DTCs.
    • Ignition ON, engine running.
    • Increase engine speed to greater than 1,500 RPM for 10 seconds. Repeat this 3 times.
    • Retrieve the continuous memory DTCs.

    Are DTCs P0340, P0341, P0344, P0345, P0346, P0349, P0365, P0366, P0369, P0390, P0391 or P0394 present? 

    Yes No
    GO to  DR4. GO to PINPOINT TEST Z .
  4. DR4 CHECK THE GENERATOR FOR EXCESSIVE ELECTRICAL NOISE 
    NOTE: If the generator/regulator is electrically noisy, the noise decreases when the B+ connector is disconnected.
    • PCM connector connected.
    • CMP Sensor connector connected.
    • Ignition ON, engine running.
    • Monitor the generator for an audible electric noise.
    • Ignition OFF.
    • Generator/regulator B+ connector disconnected.
    • Ignition ON, engine running.
    • With the engine running, determine if the generator is still noisy.

    Does the noise remain constant when the B+ connector is disconnected? 

    Yes No
    For Fusion 2.5L,
    Fusion 3.0L,
    Focus,
    Escape/Mariner,
    Milan, and
    Transit Connect, GO to  DR17.
    For all others, GO to  DR5.    		 REFER to the appropriate Charging System article to DIAGNOSE the generator is noisy symptom.
  5. DR5 CHECK FOR DTCS 

    Are DTCs P0340, P0341, P0344, P0345, P0346 or P0349 present? 

    Yes No
    For DTCs P0340 or P0344, GO to  DR6.
    For DTCs P0341 or P0346, GO to  DR30.
    For DTCs P0345 or P0349, GO to  DR11.    		 Unable to duplicate or identify the concern at this time.
  6. DR6 DTCS P0340 AND P0344: CHECK THE CMP SENSOR RESISTANCE 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • CMP Sensor connector disconnected.
    • Measure the resistance between:
      (+) CMP Sensor Connector, Component Side (-) CMP Sensor Connector, Component Side
      CMP SIGRTN
      CMP VRSRTN
      TERMINAL RESISTANCE REFERENCE

      Vehicle Minimum Resistance (ohms) Maximum Resistance (ohms)
      Edge, Flex, Fusion 3.5L, MKS, MKT, MKX, MKZ, Taurus 586 2,033
      F-150 4.6L 1,978 5,590
      F-150 5.4L 205 579
      All others 250 1,000

    Is the resistance within specification? 

    Yes No
    GO to  DR7. INSTALL a new CMP sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  7. DR7 CHECK THE CMP CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Harness Side (-) Vehicle Battery
      CMP Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    GO to  DR8. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  8. DR8 CHECK THE CMP AND SIGRTN OR VRSRTN CIRCUITS FOR AN OPEN IN THE HARNESS 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • Measure the resistance between:
      (+) PCM Connector, Harness Side (-) CMP Sensor Connector, Harness Side
      CMP CMP
      SIGRTN SIGRTN
      VRSRTN VRSRTN

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  DR9. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  9. DR9 CHECK FOR A SHORT IN THE HARNESS BETWEEN THE PCM AND THE CMP SENSOR 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Measure the resistance between:
      (+) CMP Sensor Connector, Harness Side (-) CMP Sensor Connector, Harness Side
      CMP SIGRTN
      CMP VRSRTN
    • Measure the resistance between:
      (+) CMP Sensor Connector, Harness Side (-) Vehicle Battery
      CMP Negative terminal
      SIGRTN Negative terminal
      VRSRTN Negative terminal

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  DR10. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  10. DR10 CHECK THE CMP SENSOR OUTPUT 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • Generator/regulator B+ connector connected.
    • CMP Sensor connector disconnected.
    • Ignition ON, engine running.
    • Digital multimeter (DMM) on low voltage AC scale.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Component Side (-) CMP Sensor Connector, Component Side
      CMP SIGRTN
      CMP VRSRTN
    • Run the engine at approximately 2,500 RPM.

    Is the voltage greater than 0.25 V? 

    Yes No
    For Crown Victoria,
    E-Series,
    Explorer 4.0L,
    Explorer SportTrac 4.0L,
    F-150 4.6L 2V,
    Focus,
    F-Series Super Duty 6.8L,
    Grand Marquis,
    Mountaineer 4.0L,
    Mustang 4.0L,
    Mustang 5.4L,
    Ranger,
    Town Car, and
    Transit Connect, GO to  DR32.
    For all others, GO to  DR31.    		 INSTALL a new CMP sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  11. DR11 DTCS P0345 AND P0349: CHECK THE CMP2 SENSOR RESISTANCE 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • CMP2 Sensor connector disconnected.
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Component Side (-) CMP2 Sensor Connector, Component Side
      CMP2 SIGRTN
      CMP2 VRSRTN
      CMP2 VRSRTN2
      TERMINAL RESISTANCE REFERENCE

      Vehicle Minimum Resistance (ohms) Maximum Resistance (ohms)
      Edge, Flex, Fusion 3.5L, MKS, MKT, MKX, MKZ, Taurus 586 2,033
      F-150 205 579
      All others 250 1,000

    Is the resistance value(s) within specifications? 

    Yes No
    GO to  DR12. INSTALL a new CMP2 sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  12. DR12 CHECK THE CMP2 CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP2 Sensor Connector, Harness Side (-) Vehicle Battery
      CMP2 Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    GO to  DR13. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  13. DR13 CHECK THE CMP2 AND SIGRTN, VRSRTN, OR VRSRTN2 CIRCUITS FOR AN OPEN IN THE HARNESS 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • Measure the resistance between:
      (+) PCM Connector, Harness Side (-) CMP2 Sensor Connector, Harness Side
      CMP2 CMP2
      SIGRTN SIGRTN
      VRSRTN VRSRTN
      VRSRTN2 VRSRTN2

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  DR14. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  14. DR14 CHECK FOR A SHORT IN THE HARNESS BETWEEN THE PCM AND THE CMP2 SENSOR 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Harness Side (-) CMP2 Sensor Connector, Harness Side
      CMP2 SIGRTN
      CMP2 VRSRTN
      CMP2 VRSRTN2
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Harness Side (-) Vehicle Battery
      CMP2 Negative terminal
      SIGRTN Negative terminal
      VRSRTN Negative terminal
      VRSRTN2 Negative terminal

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  DR15. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  15. DR15 CHECK FOR A SHORT BETWEEN THE CMP AND THE CMP2 CIRCUITS 
    • CMP Sensor connector disconnected.
    • CMP2 Sensor connector disconnected.
    • Measure the resistance between:
      (+) PCM Connector, Harness Side (-) PCM Connector, Harness Side
      CMP CMP2

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  DR16. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  16. DR16 CHECK THE CMP2 SENSOR OUTPUT 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • Ignition OFF.
    • Generator/regulator B+ connector connected.
    • CMP2 Sensor connector disconnected.
    • Ignition ON, engine running.
    • DMM on low voltage AC scale.
    • Measure the voltage between:
      (+) CMP2 Sensor Connector, Component Side (-) CMP2 Sensor Connector, Component Side
      CMP2 SIGRTN
      CMP2 VRSRTN
      CMP2 VRSRTN2
    • Run the engine at approximately 2,500 RPM.

    Is the voltage greater than 0.25 V? 

    Yes No
    GO to  DR31. INSTALL a new CMP2 sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  17. DR17 CHECK FOR DTCS 

    Are DTCs P0340, P0341, P0344, P0345, P0346, P0349, P0365, P0366, P0369, P0390, P0391 or P0394 present? 

    Yes No
    For DTCs P0340, P0344, P0365 or P0369, GO to  DR18.
    For DTCs P0341, P0346, P0366 or P0391, GO to  DR30.
    For DTCs P0345, P0349, P0390 or P0394, GO to  DR24.    		 Unable to duplicate or identify the concern at this time.
  18. DR18 DTCS P0340, P0344, P0365 AND P0369: CHECK THE VOLTAGE TO THE CMP SENSOR 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • CMP Sensor connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Harness Side (-) Vehicle Battery
      VPWR Negative terminal
      VBPWR Negative terminal

    Is the voltage greater than 10 V? 

    Yes No
    GO to  DR19. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  19. DR19 CHECK THE PWRGND OR SIGRTN CIRCUIT FOR AN OPEN CIRCUIT IN THE HARNESS 
    • Ignition OFF.
    • Measure the voltage between:
      (+) Vehicle Battery (-) CMP Sensor Connector, Harness Side
      Positive terminal PWRGND
      Positive terminal SIGRTN

    Is the voltage greater than 10 V? 

    Yes No
    GO to  DR20. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  20. DR20 CHECK THE CMP CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Harness Side (-) Vehicle Battery
      CMP Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    GO to  DR21. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  21. DR21 CHECK FOR AN OPEN CIRCUIT BETWEEN THE PCM AND CMP SENSOR 
    • Ignition OFF.
    • CMP Sensor connector disconnected.
    • Measure the resistance between:
      (+) CMP Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      CMP CMP

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  DR22. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  22. DR22 CHECK THE CMP CIRCUIT FOR A SHORT TO PWRGND OR SIGRTN IN THE HARNESS 
    NOTE: The measurement may be taken at the PCM or CMP connector, whichever is easier to access.
    • Measure the resistance between:
      (+) CMP Sensor Connector, Harness Side (-) CMP Sensor Connector, Harness Side
      CMP PWRGND
      CMP SIGRTN

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  DR23. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  23. DR23 CHECK THE CMP SENSOR FOR CORRECT OPERATION 
    NOTE: For vehicles with 2-pin CMP sensors, measure the circuits listed in the table that apply to 2-pin sensors. For vehicles with 3-pin CMP sensors, measure the circuits listed in the table that apply to 3-pin sensors. Refer to connector end views at beginning of pinpoint test.
    • PCM connector connected.
    • Connect a 5 amp fused jumper wire between the following:
      Point A CMP Sensor Connector, Harness Side Point B CMP Sensor Connector, Component Side
      VPWR VPWR
      VBPWR VBPWR
      SIGRTN SIGRTN
      PWRGND PWRGND
    • Ignition ON, engine running.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Component Side (-) Vehicle Battery
      CMP Negative terminal

    Does the voltage switch between LOW (less than 2 volts DC) and HIGH (greater than 8 volts DC)? 

    Yes No
    GO to  DR32. INSTALL a new CMP sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  24. DR24 DTCS P0345, P0349, P0390 AND P0394: CHECK THE VOLTAGE TO THE CMP2 SENSOR 
    • CMP2 Sensor connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP2 Sensor Connector, Harness Side (-) Vehicle Battery
      VBPWR Negative terminal

    Is the voltage greater than 10 V? 

    Yes No
    GO to  DR25. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  25. DR25 CHECK THE SIGRTN CIRCUIT FOR AN OPEN CIRCUIT IN THE HARNESS 
    • Ignition OFF.
    • Measure the voltage between:
      (+) Vehicle Battery (-) CMP2 Sensor Connector, Harness Side
      Positive terminal SIGRTN

    Is the voltage greater than 10 V? 

    Yes No
    GO to  DR26. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  26. DR26 CHECK THE CMP2 CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) CMP2 Sensor Connector, Harness Side (-) Vehicle Battery
      CMP2 Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    GO to  DR27. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  27. DR27 CHECK FOR AN OPEN CMP2 CIRCUIT IN THE HARNESS 
    • Ignition OFF.
    • CMP2 Sensor connector disconnected.
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      CMP2 CMP2

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  DR28. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  28. DR28 CHECK THE CMP2 SIGNAL CIRCUIT FOR A SHORT TO GROUND AND SIGRTN 
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Harness Side (-)
      CMP2 Ground
    • Measure the resistance between:
      (+) CMP2 Sensor Connector, Harness Side (-) CMP2 Sensor Connector, Harness Side
      CMP2 SIGRTN

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  DR29. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  29. DR29 CHECK THE CMP2 SENSOR FOR CORRECT OPERATION 
    • PCM connector connected.
    • Connect a 5 amp fused jumper wire between the following:
      Point A CMP2 Sensor Connector, Harness Side Point B CMP2 Sensor Connector, Component Side
      VBPWR VBPWR
      SIGRTN SIGRTN
    • Ignition ON, engine running.
    • Measure the voltage between:
      (+) CMP2 Sensor Connector, Component Side (-) Vehicle Battery
      CMP2 Negative terminal

    Does the voltage switch between LOW (less than 2 volts DC) and HIGH (greater than 8 volts DC)? 

    Yes No
    GO to  DR31. INSTALL a new CMP2 sensor. REFER to the appropriate Electronic Engine Controls article .
    CLEAR the DTCs. REPEAT the self-test.
  30. DR30 DTCS P0341, P0346, P0366 AND P0391: INSPECT THE HARNESS 
    • Ignition OFF.
    • Check the harness for routing, alterations, incorrect shielding, or electrical interference from other systems.
    • Check the CMP connector for damage or corrosion.

    Is a concern present? 

    Yes No
    REPAIR as necessary.
    CLEAR the DTCs. REPEAT the self-test.    		 GO to  DR31.
  31. DR31 CHECK THE VARIABLE CAMSHAFT TIMING (VCT) SYSTEM 
    NOTE: Only diagnose the bank indicated by the DTC.
    • Check the VCT system for correct operation.

    Is a concern present? 

    Yes No
    REPAIR as necessary.
    CLEAR the DTCs. REPEAT the self-test.    		 GO to  DR32.
  32. DR32 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 and 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) , Programming the VID Block for a Replacement PCM. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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