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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1822 (Engine Controls - Pinpoint Test JB: Secondary Ignition (Cop) Through Pinpoint Test KF: Fan Control (FC) Relays - (Except Diesel & Hybrid)) >> PINPOINT TEST JF: Integrated Ignition Coil On Plug Coils A Through J Failure >> Test Procedures

Test Procedures

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  1. JF1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 
    NOTE: Electronic ignition engine timing is entirely controlled by the PCM. Electronic ignition timing is not adjustable. Do not attempt to check base timing. You will receive false readings.
    NOTE: Pull on the suspect coil connector to determine if it is correctly seated before proceeding with the current diagnostic path. If the suspect coil connector is not seated correctly, reconnect the suspect connector until an audible click can be heard.
    NOTE: Coil letter A through J corresponds with cylinder number 1 through 10.

    Are DTCs P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358, P0359, P0360, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315 OR P2316 present? 

    Yes No
    For F-150 3.5L, GO to  JF4.
    For all others, GO to  JF2.    		 For all other DTCs, GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
    For F-150 3.5L, symptoms with out DTCs,
    GO to  JF4.
    For all others, symptoms with out DTCs,
    GO to  JF2.
  2. JF2 CHECK THE FUNCTIONALITY OF THE SUSPECT COIL DRIVER CIRCUIT 
    • Ignition OFF.
    • Suspect coil connector disconnected.
    • Remove the fuel pump fuse to disable the fuel pump.
    • Connect a non-powered test lamp between the IGN START/RUN and suspect coil driver, harness side.
    • Observe the test lamp while cranking the engine.

    Is the test lamp blinking consistently? 

    Yes No
    GO to  JF3. GO to  JF4.
  3. JF3 CHECK THE FUNCTIONALITY OF THE SUSPECT COIL 
    • Ignition OFF.
    • Carry out a visual inspection. Closely inspect the coil case and boot for carbon tracking, cracks and torn or incorrectly installed boots.
    • Remove the suspect COP from the spark plug.
    • Connect the Adjustable Ignition Spark Tester THX458 or equivalent.
    • Suspect coil connector connected.
    • Crank the engine.
    • Observe the spark tester while cranking the engine.

    Is a bluish-white spark present? 

    Yes No
    GO to PINPOINT TEST Z . INSTALL a new suspect coil. If necessary, INSTALL a new spark plug. REFER to the appropriate Engine Ignition article.
    Clear the PCM DTCs. REPEAT the self-test.
    If the concern or DTC is still present,
    GO to  JF15.
  4. JF4 CHECK THE IGNITION START/RUN SUPPLY TO THE SUSPECT COIL 
    • Ignition ON, engine OFF.
    • Suspect coil connector disconnected.
    • Measure the voltage between:
      VOLTAGE REFERENCE CHART

      (+) COP Connector, Harness Side (-) Vehicle Battery
      IGN START/RUN Negative terminal

    Is the voltage greater than 10 V? 

    Yes No
    For F-150 3.5L, GO to  JF5.
    For all others, GO to  JF6.    		 For Crown Victoria,
    Grand Marquis, and
    Town Car, GO to  JF10.
    For all others, REPAIR the open circuit.
    Clear the PCM DTCs. REPEAT the self-test.
  5. JF5 CHECK THE SUSPECT COIL GROUND CIRCUIT FOR AN OPEN IN THE HARNESS 
    • Measure the voltage between:
      VOLTAGE REFERENCE CHART

      (+) COP Connector, Harness Side (-) COP Connector, Harness Side
      IGN START/RUN GND

    Is the voltage greater than 10 V? 

    Yes No
    GO to  JF6. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  6. JF6 CHECK THE SUSPECT COIL DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS 
    • Ignition OFF.
    • PCM connector disconnected.
    • Suspect coil connector disconnected.
    • Measure the resistance between:
      RESISTANCE REFERENCE CHART

      (+) PCM Connector, Harness Side (-) COP Connector, Harness Side
      COP COP

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  JF7. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  7. JF7 CHECK THE SUSPECT COIL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      VOLTAGE REFERENCE CHART

      (+) PCM Connector, Harness Side (-) Vehicle Battery
      COP Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    GO to  JF8. REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  8. JF8 CHECK THE SUSPECT COIL DRIVER CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS 
    • Ignition OFF.
    • Measure the resistance between:
      RESISTANCE REFERENCE CHART

      (+) PCM Connector, Harness Side (-) Vehicle Battery
      COP Negative terminal

    Is the resistance greater than 10K ohms? 

    Yes No
    For F-150 3.5L, GO to  JF9.
    For all others, GO to  JF14.    		 REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test. If the concern or DTC is still present,
    GO to  JF9.
  9. JF9 CHECK THE SUSPECT COIL FOR DAMAGE 
    • PCM connector connected.
    • Connect the Adjustable Ignition Spark Tester THX458 or equivalent to the suspect coil.
    • Crank the engine.
    • Observe the spark tester while cranking the engine.

    Is a bluish-white spark present? 

    Yes No
    If necessary, INSTALL a new spark plug.
    REFER to the appropriate Engine Ignition article.
    Clear the PCM DTCs. REPEAT the self-test.    		 INSTALL a new suspect coil. REFER to the appropriate Engine Ignition article.
    Clear the PCM DTCs. REPEAT the self-test.
    If the concern or DTC is still present,
    GO to  JF15.
  10. JF10 CHECK VPWR CIRCUIT CONTINUITY BETWEEN THE SUSPECT COIL AND IGNITION COILS RELAY 
    • Ignition OFF.
    • Ignition Coils Relay connector disconnected.
    • Measure the resistance between:
      RESISTANCE REFERENCE CHART

      (+) Ignition Coils Relay Connector, Harness Side (-) Suspect coil Connector, Harness Side
      VPWR - Pin 3 IGN START/RUN

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  JF11. REPAIR the open circuit. The open is between the splice and the ignition coils relay.
    Clear the PCM DTCs. REPEAT the self-test.
  11. JF11 CHECK THE B+ AND IGN START/RUN VOLTAGE TO IGNITION COILS RELAY 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      VOLTAGE REFERENCE CHART

      (+) Ignition Coils Relay Connector, Harness Side (-)
      B+ - Pin 5 Ground
      IGN START/RUN - Pin 2 Ground

    Are the voltage greater than 10 V? 

    Yes No
    GO to  JF12. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  12. JF12 CHECK THE IGNITION COILS RELAY GND CIRCUIT FOR AN OPEN IN THE HARNESS 
    • Measure the voltage between:
      VOLTAGE REFERENCE CHART

      (+) Ignition Coils Relay Connector, Harness Side (-) Ignition Coils Relay Connector, Harness Side
      B+ - Pin 5 GND - Pin 1

    Is the voltage greater than 10 V? 

    Yes No
    GO to  JF13. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  13. JF13 CHECK THE IGNITION COILS RELAY 
    • Carry out the ignition coils relay component test. Refer to the appropriate ELECTRONIC ENGINE CONTROLS article.

    Is a concern present? 

    Yes No
    INSTALL a new Ignition Coils relay. Clear the PCM DTCs. REPEAT the self-test. GO to  JF14.
  14. JF14 TEST DIRECTION FOR PINPOINT TEST A 

    Were you directed to this pinpoint test from pinpoint test step A8? 

    Yes No
    GO to PINPOINT TEST A step 9 . GO to  JF15.
  15. JF15 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) , 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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