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  1. #1

    2006 4-tec GTX 155hp P0600 fault and checking the circuits. Please Help

    I have a P0600 fault in communication system.


    I need to check circuits 2-10 & 2-11 or a 1-10 & 1-11. I see this everywhere on the internet and it is the white/red and white/black wire communication loop.


    Do I check this circuit to see if it is grounded or check it for vlotage or check a loop for resistance?


    Is the best approach to check each sensor individually or should the fault system find bad sensors?

    I replaced MPEM because this 2-10 and 2-11 had continuity to ground at the ECM connection.





    Thank you


  2. #2

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    Quote Originally Posted by coreyb66 View Post
    I have a P0600 fault in communication system.


    I need to check circuits 2-10 & 2-11 or a 1-10 & 1-11. I see this everywhere on the internet and it is the white/red and white/black wire communication loop.


    Do I check this circuit to see if it is grounded or check it for vlotage or check a loop for resistance?


    Is the best approach to check each sensor individually or should the fault system find bad sensors?

    I replaced MPEM because this 2-10 and 2-11 had continuity to ground at the ECM connection.





    Thank you
    My shop manual is showing two possible faults for the code P0600.
    First one is.....Communication problem detected by ECM. (Possible Fault)....Damaged circuit wires, damaged connector, damaged ECM output pins. Diagnostic connector cap not connected. Fault detected when the engine is stopped. (Action)....Connect diagnostic connector cap.

    Second one is....Communication problem - ECM message missing. (Possible Fault)....Damaged circuit wires, damaged connector or damaged ECM output pins. Fault detected when the engine is stopped. (Action)....Check system circuits B-10 and B-11.

    It doesnt say what to check for...so im not sure if this is any help too you.

  3. #3
    boost junkie skidoochris's Avatar
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    do you have the right gauge cluster for your ecu?

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