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AlvinC
AlvinC, Ford Technician
Category: Ford
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Experience:  With Ford 20+years as Dealership Technician Ford Senior Master Technician Gas and Diesel
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1004 ford taurus SHO: No spark from coil pack

Resolved Question:

1004 ford taurus SHO 3.2 Won''t start. No spark from coil pack. Power to coil ok on 1 wire. New coil and ignition control module. Computer self check is 111. Checked most connectors and cleaned.
Submitted: 6 years ago.
Category: Ford
Expert:  AlvinC replied 6 years ago.
Customer Have you verified that the camshafts are turning and the timing belt is not stripped?Please reply and we will know where to go from here,Al
AlvinC, Ford Technician
Category: Ford
Satisfied Customers: 1241
Experience: With Ford 20+years as Dealership Technician Ford Senior Master Technician Gas and Diesel
AlvinC and 6 other Ford Specialists are ready to help you
Customer: replied 6 years ago.
Have compression, Car was stopping suddenly, and would not start for 15 mins. or more.Now it won't start at all. I was an electrical repairman for G.M for 18 years, but Ford has me stumped with this coilpack B.S. Like I said, There is power to the coil pack 12 volts, but no sparkout the towers.
Paul
Expert:  AlvinC replied 6 years ago.
Paul, Generally on Ford's when you have a stall then have to wait for a restart with no spark it is caused by a ignition module breaking down. Yours is located on the intake opposite the throttle body. Do you have access to a scan tool. If you have a ignition fault there shoul be a code stored should a code or codes 211-220,Al
Customer: replied 6 years ago.
Reply to AlvinC's Post: Al;
I replaced the control module and the coilpack. I don't have a scan tool but I know how to do the KOEO test which gave me code 111 which supposedly means everything checks out OK.I don't have a repair manual yet so I have no clue which connectors to check since I suspect corrosion on a ground feed somewhere between the controller and the coil. Possibly, maybe something with the position sensor. How do I manually check this out?
Customer: replied 6 years ago.
AL;
Is there a schematic somewhere on the internet that shows the circuits between the control module and the coil pack? A lot of circuits are very low voltage and subject to corrosion at the numerous connectors mostly used for assembly purposes. Which ones are the test points?
Expert:  AlvinC replied 6 years ago.

Paul, Here is the test procedure from the Ford shop manual.

graphic

graphic

1994 PCED On Board Diagnostics I ASECTION 8A: Ignition System Diagnostic Procedures


AA: Remote Mounted ICM No Start


AA1 WERE TESTS IN EEC QUICK TEST COMPLETED

Were all tests accomplished according to EEC Quick Test procedures?

Yes No
GO to AA2 . REFER to Section 2A , Diagnostic Routines.

AA2 CHECK FOR GOOD BATTERY

Is battery voltage greater than 12 volts DC with the key on?

Yes No
GO to AA3 . SERVICE battery.

AA3 CHECK FOR SPARK AT COIL DURING CRANK

  • Using an Air Gap Spark Tester (D81P-6666-A) or a Neon Bulb Spark Tester (D89P-6666-A) or equivalent, check for spark during crank at coil wire.

Was spark present during crank?

Yes No
GO to AA9 . GO to AA4 .

AA4 CHECK FOR ICM POWER

  • Key off.
  • Connect DI diagnostic harness to EEC breakout box, connect B- lead to negative post of battery, and connect ICM tee to ICM and vehicle harness.
  • Do not connect B+ lead of DI diagnostic harness to battery.

    CAUTION: Do not connect PCM to EEC breakout box when it is used with DI diagnostic harness.

  • Make sure PIP OPEN/NORMAL/SPOUT OPEN switch on DI diagnostic harness is in the NORMAL position.
  • Use DI overlay on breakout box.
  • DVOM on 40 volt DC scale.
  • Key on.
  • Measure voltage between J5 (ICM PWR) and J7 (B-) at breakout box.
Is voltage greater than 10 volts DC?
Yes No
GO to AA5 . SERVICE power open to ICM in harness or connector.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA5 CHECK FOR PIP SIGNAL

  • DVOM on 40 volt AC scale.
  • Crank engine and measure voltage between J15 (PIP) and J7 (B-).

Is voltage between 3.0 and 8.5 volts AC?

Yes No
GO to AA6 . GO to AA11 .

AA6 CHECK FOR SPOUT SIGNAL

  • Crank engine and measure voltage between J10 (SPOUT) and J7 (B-).

Is voltage between 3.0 and 8.5 volts AC?

Yes No
GO to AA7 . GO to AA18 .

AA7 CHECK COIL PWR AT COIL

  • Key off.
  • Connect diagnostic harness coil tee to vehicle harness; do not connect diagnostic harness to coil.
  • Key on.
  • DVOM on 40 volt DC scale.
  • Measure voltage between J2 (COIL PWR) and J7 (B-).
Is voltage greater than 10 volts DC?
Yes No
GO to AA8 . SERVICE power open to coil in harness or connector.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA8 CHECK FOR COIL- SIGNAL

  • Key off.
  • Connect B+ lead of DI diagnostic harness to positive post of battery.
  • Connect 12 volt incandescent test lamp between J1 (B+) and J3 (COIL-).
  • Key on.
  • Crank engine.
Did test lamp flash brightly?
Yes No
REPLACE coil.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA27 .

AA9 CHECK FOR SPARK AT ALL WIRES

  • Using an Air Gap Spark Tester (D81P-6666-A) or Neon Bulb Spark Tester (D89P-6666-A) or equivalent, check for spark at all wires.
Was spark present at all plugs during crank?
Yes No
GO to AA10 . SERVICE distributor cap, rotor, plugs or plug wires. REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA10 CHECK PLUGS

  • Remove and check plugs for damage, wear, carbon deposits and proper plug gap.
Are plugs OK?
Yes No
Not an Ignition problem, REFER to Section 2A Diagnostic Routines. SERVICE plugs.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA11 CHECK FOR CMP POWER AT CMP SENSOR

  • Connect diagnostic harness CMP sensor tee to CMP sensor and vehicle harness.
  • DVOM on 40 volt DC scale.
  • Key on.
  • Measure voltage between:
    • J22 (CMP PWR) and J7 (B-) if 8 pin CMP sensor connector
      or
    • J27 (CMP PWR) and J7 (B-) if 4 pin CMP sensor connector.
Is voltage greater than 10 volts DC?
Yes No
GO to AA12 . SERVICE power to CMP sensor in harness or connector.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA12 CHECK FOR PIP FROM CMP SENSOR

  • Turn switch on diagnostic cable to PIP OPEN.
  • DVOM on 40 volt AC scale.
  • Crank engine and measure voltage between:
    • J34 (PIP A) and J7 (B-) if 8 pin CMP sensor connector or
    • J13 (PIP) and J7 (B-) if 4 pin CMP sensor connector.
Is voltage between 3.0 and 8.5 volts AC?
Yes No
GO to AA13 . CHECK CMP sensor wiring, if OK REPLACE CMP sensor.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA13 CHECK PIP WITH ICM DISCONNECTED

  • Key off.
  • Turn switch on diagnostic cable to NORMAL.
  • Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.
  • Crank engine and measure voltage between:
    • J34 (PIP A) and J7 (B-) if 8 pin CMP sensor connector or
    • J13 (PIP) and J7 (B-) if 4 pin CMP sensor connector.
Is voltage between 3.0 and 8.5 volts AC?
Yes No
REPLACE ICM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA14 .

AA14 CHECK PIP WITH PCM DISCONNECTED

  • Disconnect PCM.
  • Crank engine and measure voltage between:
    • J34 (PIP A) and J7 (B-) if 8 pin CMP sensor connector or
    • J13 (PIP) and J7 (B-) if 4 pin CMP sensor connector.
Is voltage between 3.0 and 8.5 volts AC?
Yes No
REPLACE PCM.

REMOVE all test equipment. RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA15 .

AA15 CHECK PIP A TO PCM FOR SHORT HIGH

  • Key off.
  • Disconnect diagnostic harness CMP sensor tee from CMP sensor only; leave CMP sensor tee connected to vehicle harness.
  • DVOM on 40 volt DC scale.
  • Key on.
  • Measure voltage between:
    • J34 (PIP A) and J7 (B-) if 8 pin CMP sensor connector or
    • J13 (PIP) and J7 (B-) if 4 pin CMP sensor connector
Is voltage less than 0.5 volt DC?
Yes No
For Systems B and F: GO to AA16 .

For all other systems, SERVICE PIP between CMP sensor and PCM or ICM in harness for short low.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

For Systems B and F: SERVICE PIP A between CMP sensor and PCM in harness for short high.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

For all other systems, SERVICE PIP between CMP sensor and PCM or ICM in harness for short high.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA16 CHECK PIP B TO ICM FOR SHORT HIGH

  • Key on.
  • Measure voltage between J41 (PIP B) and J7 (B-).
Is the voltage less than 0.5 volt DC?
Yes No
GO to AA17 . SERVICE PIP B between CMP sensor and ICM in harness for short high.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA17 CHECK PIP IN HARNESS FOR SHORT LOW

  • Key off.
  • DVOM on 20K ohm scale.
  • Measure resistance between J41 (PIP B) and J7 (B-).
Is resistance greater than 10K ohms?
Yes No
SERVICE PIP A between CMP sensor and PCM in harness for short low.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

SERVICE PIP B between CMP sensor and ICM in harness for short low.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA18 CHECK FOR SPOUT IN HARNESS

  • Turn switch to SPOUT OPEN position on diagnostic harness.
  • Crank engine and measure voltage between J10 (SPOUT) and J7 (B-).

Is voltage between 3.0 and 8.5 volts AC?

Note: Engine may start, continue diagnostics.

Yes No
REPLACE ICM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA19 .

AA19 CHECK FOR SPOUT HIGH

  • Key off.
  • Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.
  • Turn switch to NORMAL on diagnostic harness.
  • DVOM on 40 volt DC scale.
  • Measure voltage between J10 (SPOUT) and J7 (B-), with key on.

Is voltage less than 0.5 volt DC?

Yes No
GO to AA21 . GO to AA20 .

AA20 CHECK FOR SPOUT SHORT HIGH IN HARNESS

  • Key off.
  • Disconnect PCM.
  • Measure voltage between J10 (SPOUT) and J7 (B-) with key on.
Is voltage less than 0.5 volt DC?
Yes No
GO to AA23 . SERVICE SPOUT between PCM and ICM in harness for short high.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA21 CHECK FOR SPOUT SHORT LOW

  • Key off.
  • DVOM on 20K ohm scale.
  • Measure resistance between J10 (SPOUT) and J7 (B-).

Is resistance greater than 10K ohms?

Yes No
GO to AA23 . GO to AA22 .

AA22 CHECK FOR SPOUT SHORT LOW IN HARNESS

  • Disconnect PCM.
  • Measure resistance between J10 (SPOUT) and J7 (B-).
Is resistance greater than 10K ohms?
Yes No
GO to AA23 . SERVICE SPOUT between PCM and ICM in harness for short low.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA23 CHECK FOR PIP OPEN IN HARNESS

  • Key off.
  • DVOM on 40 volt AC scale.
  • Disconnect PCM.
  • Crank engine and measure voltage between Pin 56 (PIP) of PCM harness connector and J7 (B-).

Is voltage between 3.0 and 8.5 volts AC?

Yes No
GO to AA24 . GO to AA26 .

AA24 CHECK IGN GND AT PCM

  • Key off.
  • Reconnect diagnostic harness ICM tee to ICM.
  • DVOM on 200 ohm scale.
  • Measure resistance between Pin 16 (IGN GND) of PCM harness connector and J7 (B-) at the breakout box.
Is resistance less than 5.0 ohms?
Yes No
REPLACE PCM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA25 .

AA25 CHECK FOR IGN GND AT CMP SENSOR

  • Connect diagnostic harness CMP sensor tee to CMP sensor and vehicle harness.
  • Measure resistance between:
    • J35 (IGN GND) and J7 (B-) if 8 pin CMP sensor connector or
    • J19 (IGN GND) and J7 (B-) if 4 pin CMP sensor connector.
Is resistance less than 5.0 ohms?
Yes No
SERVICE IGN GND between PCM and CMP sensor in harness for open.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

SERVICE IGN GND wire or REPLACE CMP sensor. IGN GND open in CMP sensor.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA26 CHECK PIP A AT CMP SENSOR

  • Turn switch from NORMAL to PIP OPEN position.
  • Connect diagnostic harness CMP sensor tee to CMP sensor and vehicle harness.
  • Crank engine and measure voltage between:
    • J34 (PIP A) and J7 (B-) if 8 pin CMP sensor connector or
    • J13 (PIP) and J7 (B-) if 4 pin CMP sensor connector.
Is voltage between 3.0 and 8.5 volts AC?
Yes No
SERVICE PIP open in harness between PCM and CMP sensor.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

SERVICE PIP wire or REPLACE CMP sensor. PIP open in CMP sensor.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA27 CHECK FOR COIL- OPEN IN HARNESS

  • Key off.
  • Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.
  • Disconnect B+ lead of DI diagnostic harness from battery.
  • DVOM on 200 ohm scale.
  • Measure the resistance between J3 (COIL-) and J4 (ICM COIL-).
Is resistance less than 5.0 ohms?
Yes No
GO to AA28 . SERVICE open coil- between ICM and coil in harness.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA28 CHECK FOR COIL- SHORT HIGH IN HARNESS

  • DVOM on 40 volt DC scale.
  • Key on.
  • Measure voltage between J3 (COIL-) and J7 (B-).
Is voltage less than 5.5 volts DC?
Yes No
GO to AA29 . SERVICE coil - short high in harness between coil and ICM. Coil may be damaged.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA29 CHECK FOR COIL- SHORT LOW IN HARNESS

  • Key off.
  • DVOM on 20K ohm scale.
  • Measure resistance between J3 (COIL-) and J7 (B-).
Is resistance greater than 10K ohms?
Yes No
GO to AA30 . SERVICE coil - short low in harness between coil and ICM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

AA30 CHECK GND AT ICM

  • Key off.
  • DVOM on 200 ohm scale.
  • Measure resistance between J9 (GND) and J7 (B-).
Is resistance less than 5.0 ohms?
Yes No
REPLACE ICM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

GO to AA31 .

AA31 CHECK GND AT CMP SENSOR

  • Connect diagnostic harness CMP sensor tee to the CMP sensor and vehicle harness.
  • Measure resistance between:
    • J28 (GND) and J7 (B-) if 8 pin CMP sensor connector and PUSH START system or
    • J26 (GND) and J7 (B-) if 8 pin CMP sensor connector and CCD system or
    • J26 (GND) and J7 (B-) if 4 pin CMP sensor connector.
Is resistance less than 5.0 ohms?
Yes No
SERVICE open GND in harness between CMP sensor and ICM.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory.

RERUN Quick Test.

SERVICE GND wire or REPLACE sensor. GND open in CMP sensor or connector.

REMOVE all test equipment.

RECONNECT all components.

CLEAR Continuous Memory. RUN Quick Test.

Expert:  AlvinC replied 6 years ago.
Paul, I have added the ignition system schematics,Al
Customer: replied 6 years ago.
Thanks Al;
I will run the tests that i have equipment to do.
If I can't get it to spark, the whole deal is either going to the ford shop or the junk yard. probably the latter.

Paul

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