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Re: Snap-On smog analyzer and Chevy Cavalier
Posted to Emissions Forum on 12/21/2006 1 Reply

Tam,

I have both the Snap-On Smog Machine and OTC 4000 Enhanced Scanner, and neither will power up unless pin 16 connected to 12 volts.

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I'd GUESS the SPx OBDII interface is powered by the Smog Mac... Login to read more.

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