Thread: Fuel enable circuit 229-Polarity

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  1. #1 Fuel enable circuit 229-Polarity 
    97gpl36
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    Default 03-08-2012
    Hey guys,I,m wanting to switch out the pcm on my 97 GT,I have an extra 97 pcm from a regal that has the same service numbers.
    The problem is that the buick pcm has the security enabled and my gt has no factory security.
    Does anyone know what the polarity is on pin 70 in blue harness when fuel is enabled?
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  2. #2 Re: Fuel enable circuit 229-Polarity 
    BillBoost37
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    Default 03-09-2012
    While I don't have your answer, typically the pcm uses ground to control relays.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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