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International Automotive Technicians Network
Re: 91 P-30 no communication with pcm
Posted to HD/Fleet Forum on 3/14/2008

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Hi Matt,

Find someone with a Tech 1 or a Mastertech. Tech 2 software begins in 1992. Also, have you checked for continuity, opens or shorts (to ground and to voltage) on the wires between the DLC a... Login to read more.