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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 747 (Engine Controls - Pinpoint Tests - 6.0L Diesel (99P E-Series & 99P F450/550)) >> Pinpoint Test P: Misfire/Injector Driver Circuit Operation >> Test Procedure

Test Procedure

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  1. P1 PRELIMINARY DIAGNOSIS 
    • Perform a visual inspection.
    • Retrieve and record any continuous and on-demand DTCs.
    • Clear the DTCs.
    • Perform the Injector Electrical Self-Test (Click Test). Refer to DIAGNOSTIC METHODS - 6.0L DIESEL .

    ARE ANY DTCS RETRIEVED? 

    Yes No
    For DTCs P0261, P0264, P0267, P0270, P0273, P0276, P0279 or P0282, Go to  P2. Unable to duplicate condition. CHECK for loose connections, damaged or corroded pins. WIGGLE harness attempting to recreate fault. REFER to SYMPTOM CHARTS - 6.0L DIESEL if a driveability concern exists.
    For DTCs P0262, P0265, P0268, P0271, P0274, P0277, P0280 or P0283, Go to  P4.
    For DTCs P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308, Go to  P7.
    For DTCs P0263, P0266, P0269, P0272, P0275, P0278, P0281 or P0284, Go to  P15.
  2. P2 DIAGNOSTIC TROUBLE CODES (DTCs) P0261, P0264, P0267, P0270, P0273, P0276, P0279 OR P0282 
    • Possible causes:
      • open circuit
      • coil to coil short
      • fuel injector
      • FICM connector loose
      • FICM
    • Key off.
    • Disconnect the suspect fuel injector.
    • Visually inspect the suspect injector pins.
    • Measure the resistance between the suspect fuel injector pins, component side as follows:
      • Pins 1 and 2 - 0.2 to 3.0 ohms
      • Pins 3 and 4 - 0.2 to 3.0 ohms
      • Pins 1 and 3 - greater than 10,000 ohms
      • Pins 1 and 4 - greater than 10,000 ohms
      • Pins 2 and 3 - greater than 10,000 ohms
      • Pins 2 and 4 - greater than 10,000 ohms

    ARE THE RESISTANCES WITHIN SPECIFICATIONS? 

    Yes No
    Go to  P3. INSTALL a new fuel injector.
  3. P3 CHECK THE FUEL INJECTOR CIRCUITS FOR AN OPEN 
    • Disconnect the FICM.
    • Measure the resistance between the suspect fuel injector pins 1, 2, 3 and 4, harness side and the FICM connector pins, harness side.

    ARE THE RESISTANCES LESS THAN 5 OHMS? 

    Yes No
    INSTALL a new FICM. REPAIR the circuit in question.
  4. P4 DIAGNOSTIC TROUBLE CODES (DTCs) P0262, P0265, P0268, P0271, P0274, P0277, P0280 OR P0283 
    • Possible causes:
      • circuit short to voltage
      • circuit short to ground
      • fuel injector
      • FICM
    • Key off.
    • Disconnect the suspect fuel injector to induce opposite DTC.
    • Perform the Injector Electrical Self-Test.

    IS DTC P0261, P0264, P0267, P0270, P0273, P0276, P0279 OR P0282 INDICATED? 

    Yes No
    INSTALL a new fuel injector. Go to  P5.
  5. P5 CHECK THE FUEL INJECTOR CIRCUITS FOR A SHORT TO GROUND 
    • Key off.
    • Disconnect the FICM.
    • Measure the resistance between the suspect injector pins 1, 2, 3 and 4, harness side and ground.

    ARE THE RESISTANCES GREATER THAN 10,000 OHMS? 

    Yes No
    Go to  P6. REPAIR the circuit in question.
  6. P6 CHECK THE FUEL INJECTOR CIRCUITS FOR A SHORT TO VOLTAGE 
    • Key on, engine off.
    • Measure the voltage between the suspect injector pins 1, 2, 3 and 4, harness side and ground.

    IS ANY VOLTAGE INDICATED? 

    Yes No
    REPAIR the circuit in question. INSTALL a new FICM.
  7. P7 CHECK FOR CONTINUOUS MEMORY FAULT DTCs 
    • Check for continuous memory DTCs.

    ARE DTCS P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 PRESENT? 

    Yes No
    Visually inspect for valve train, piston or any other base engine concerns. REPAIR as necessary. REFER to the appropriate ENGINE article.
    If OK, REFER to the PERFORMANCE DIAGNOSTIC PROCEDURES to continue diagnostics.    		 Go to  P8.
  8. P8 PERFORM KOEO SELF-TEST AND INJECTOR ELECTRICAL SELF-TEST 
    • Perform the KOEO and Injector Electrical self-tests.

    ARE ANY DTCS PRESENT? 

    Yes No
    Go to DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS . Go to  P9.
  9. P9 CHECK FOR KOER CODES 
    • Perform the KOER self-test.

    ARE ANY DTCS PRESENT? 

    Yes No
    Go to DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS . Go to  P10.
  10. P10 CHECK FUEL PRESSURE 

    IS THE FUEL PRESSURE WITHIN SPECIFICATION? 

    Yes No
    Go to  P11. REPAIR as necessary.
  11. P11 CHECK FOR FUEL AERATION 

    IS THE FUEL AERATED? 

    Yes No
    REPAIR as necessary. Go to  P12.
  12. P12 CHECK FOR OIL AERATION 

    IS THE OIL AERATED? 

    Yes No
    CHANGE the oil and RETEST. If the oil is aerated, REPAIR as necessary. REFER to the appropriate ENGINE . Go to  P13.
  13. P13 PERFORM THE INJECTOR ENHANCED DIAGNOSTICS 

    IS A WEAK CYLINDER IDENTIFIED? 

    Yes No
    If all four cylinders on one bank are identified, CHECK the following:
    • Oil rail check valve for restriction
    • Fuel inlet check valve
    • FICM
    • Compression/head gaskets
    • Fuel contamination

    If individual cylinders are identified, CHECK the following:

    		 Go to  P14 CHECK THE CRANKCASE PRESSURE.
    If multiple or individual cylinders are identified, CHECK the following:
    • Dual mass flywheel
    If individual cylinders are identified, CHECK the following:
    • Wiring to injector (should have already been seen with code)
    • Injector hold-down bolt tightness
    • Injector copper gasket presence
    • Faulty injector
    If the two rear cylinders are identified on either bank as weak, CHECK the following:
    • AWA fitting in oil rail
    • Compression/head gasket
    Any individual cylinder concern can be seen in the conditions listed above.
    If any two adjacent cylinders are identified as weak, CHECK the following:
    • Compression/head gasket
  14. P14 CHECK THE CRANKCASE PRESSURE 

    IS THE CRANKCASE PRESSURE ABOVE SPECIFICATION? 

    Yes No
    REPAIR as necessary. REFER to the appropriate ENGINE article. INSTALL a new PCM.
  15. P15 DTCs P0263, P0266, P0269, P0272, P0275, P0278, P0281 OR P0284 

    ARE ANY CONCERNS PRESENT? 

    Yes No
    REPAIR as necessary. REFER to the appropriate ENGINE article. Go to  P16.
  16. P16 PERFORM A VISUAL INSPECTION 
    • Perform a visual inspection for the following mechanical concerns:
      • pushrods
      • rocker arms
      • valves
      • valve springs

    ARE ANY OF THE ABOVE CONCERNS PRESENT? 

    Yes No
    REPAIR as necessary. REFER to the appropriate ENGINE article. Go to  P17 CHECK THE FUEL SYSTEM PRESSURE.
  17. P17 CHECK THE FUEL SYSTEM PRESSURE 

    IS THE FUEL PRESSURE WITHIN SPECIFICATION? 

    Yes No
    Inspect the fuel injector and O-rings. If the fuel injector and O-rings are OK, INSTALL a new fuel injector. REPAIR as necessary.
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