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International Automotive Technicians Network
Re: Code 42: What happened to my Bypass?
Posted to Technical Discussion Forum on 11/28/1998

Hi again, Jim!

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I don't see this in your image. There is 1 little pulse in the EST after Bypass went low. Shouldn't we see 400mV square wave until the engine stops?

Why is that larger pulse there i... Login to read more.