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  1. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    With the whole assembly out the fans still come on and the SES light is on solid and it will turn over but no start.
  2. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    When speaking of the memcal are you talking about the small rectangular chip that is part of the assembly that plugs into the circuit board of the ECM or do you want the whole assembly unplugged from the ecm ?
  3. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    1. Disconnected the Gray ECM connector and no ses light. 2. Key On ENG/MET changes both the temp display and the LCD Dash display from English to Metric. 3. Took out MEM/CAL same symptoms fans on and SES light wont flash codes only stays lit.
  4. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Ya fuel pump kicks on for a few and the fans do come on also. Something also turns on in the center firewall area for a few seconds also. Every couple times when the key is in the run position after about 10 seconds everything starts clicking on and off and then goes back to normal, on a side...
  5. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Okay I cleaned everything and the most I am seeing is 0.01 to 0.00 ohms on the grounds. Still wont flash codes I have 2 ECM,s tried both with same result. What about the PROM/MEMCAL would that have any bearing on it ? Also when you first hook up the battery it will fire off for about 2 seconds...
  6. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Should be able to do that tommrow and will run the tests again and post the results. Thanks a lot.
  7. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    At the connector if I probe the BLK/PNK with the black lead and probe the Yellow wire with the red lead I get 12 volts/Battery voltage. This is with the connector unplugged.
  8. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    So do you want me to go between the optispark connector and the ECM Connector ? And just the yellow wire ? Or are any other readings needed ?
  9. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Yes they are A BLK/RED B PPL/WHT C YELL D BLK/PNK E F Solid Copper Wire The Opti-Sark Connector has 4 wires coming out of it these were taken from the secondary harness connector on top of the intake manifold. Not sure where the solid wire comes in as there is only 4...
  10. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    OK here are the results. Resistance Readings Red 22 Pin Connector PIN 6 1.6 Ohms PIN 17 1.6 Ohms PIN 22 1.6 Ohms Green 22 Pin Connector PIN 9 Open no reading Voltage Readings Green 22 Pin Connector PIN 6 12v always PIN 12 12n Ignition On PIN 17 12v always PIN 18...
  11. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Ok thanks will run through the test and post back later tonight with the results.
  12. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Yes I have a digi volt meter.
  13. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    yes I did and double checked it and it is seated properly.
  14. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    When I jump pins A & B together on the ALDL the SES light does not flash just stays solid and fans do come on also. The odometer is the same as they asked for the mileage when it was rebuilt. Thanks
  15. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Give me a few minutes and I will check and post right back ?
  16. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Hello everyone been away for a while. Long story short I had A1 Cardone rebuilt the CCM and I sent the ECM in also I have both in the car now and still have the Module 4 ERR but I do not have any current DTC in the CCM or the EBCM relating to Serial Communication. It did the Key relearn and it...
  17. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Thanks Ken and Hib: Any references on where to get a CCM from new/rebuilt or send in this one ? You are dusting away ? Thanks again it seems like I am actually heading in a direction finally !!!
  18. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Ready to Give Up !!!! I have laid low on this problem and tried to get my head clear as I have little time left before it gets towed to storage for the winter season. I found this article online about testing Serial Data Lines and associated grounds in which they said to hookup a DVOM to the...
  19. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Anyone have any tips on my last post still at a stand still. Gonna snow here soon would really like to get somewhere ? Thanks
  20. 1

    Help! Module 1 C41 Module 4 Err Module 9 H72

    Thank you for that I have gone through that flow chart and got the short to ground in ckt 800 I guess I just need some tips and help on how to properly find the short to ground as all tan wires have good continuity ?
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