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John Rogers uses his PicoScope to pinpoint the cause of a P0335 on a 2000 Nissan Maxima with 75,627 miles, "it cranks strong with a good cadence. But, it doesn't even hint of starting." It was running 6 months ago before the owner let it sit idle during an extended trip. Is it rodents, is it timing or it is the "gap"?

I hook up my scan tool and check for codes and I have a P0335 code for Crankshaft Position Sensor. I also have no cranking rpm on my scan tool when I am physically cranking the engine over.

Typically, if any these sensors are not reading or reading correctly you will get a crank no start. There have also been issues with grounds, revised starter motors, starter motor RFI while cranking, Usually when there is a ground or starter or RFI issue the vehicle will crank erratically almost like a vehicle with a wet distributor cap. This vehicle cranks smooth. Furthermore, I have seen timing chain issues cause a P0335 no start. Time to hook up the scope.

Read the complete story at JWR Automotive Diagnostics.

Pico Demo available for Free
John mentions that the Pico "has excellent zoom and resolution qualities."  It does and you can try it yourself for free. Download the free PicoScope software, when it opens it will default to demo mode and display an injector signal on channel A. 

Demo let's you use all 4 channels, increase or decrease RPM and use all the features of the software. Visit http://aeswave.com/pico to download the Pico automotive software.