November 26, 201015 yr The black wire is the signal and I think it's a grey or white wire for ground right? I want to check my oxygen sensor to see how responsive it is with my digital oscilloscope What range should I be seeing? I'm guessing it should react pretty much instant on throttle changes, no?
November 26, 201015 yr try these pdf i have they might help jeff http://www.speedfreaksgarage.com/jeff/o2%20sensor%20wire%20info/2676d1090786515-o2-simulators-straight-pipes-universalo2colorcoding.pdf http://www.speedfreaksgarage.com/jeff/o2%20sensor%20wire%20info/2677d1090786537-o2-simulators-straight-pipes-makespecifico2colorcoding.pdf
November 26, 201015 yr Black is the signal wire. Ground to engine block or outer housing of the sensor. You're looking for a signal in the 0.0 to +1.0V range.
November 26, 201015 yr Author my battery was low on the phone so no flash but you can at least see the waveform. it seems to be reacting in a decent manner
November 27, 201015 yr Nice looking scope! What kind is it? Does it record (or did you record) the highest and lowest readings from the sensor?
November 27, 201015 yr Author it's a owon PDS5022S It does have that feature but it was so dark out I just wanted to get a quick reading.. heck I only checked out one injector before disconnecting everything.
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