Crank but no start code: P0335

I'm not very tech savvy. If the files aren't right let me know and I will try again.

Thanks for the help with this.

 

I looked them over, from what I can see they look fine but you also said the truck ran that day too albeit not very well.
I will say with the Pico in most cases it's better to set your timebase longer, do your capture, and then zoom in instead of setting a short timebase.
I attached a capture file from my truck.

I think when you get back to it I'd clear the codes, see what comes back, and then we can proceed based on that.
Really would like to see what the signals look like when it doesn't start.

 

So my buddy decided to take the Tacoma to a dealer and have them diagnose it. The dealer states,

"Replace the internal Transmission and engine wiring Harness. It is leaking transmission fluid through the connector and pushing it through the engine wiring harness wire and insulation causing it to deteriorate. NE-(white) wire for crankshaft position sensor circuit is shorted to body ground also and is part of the same harness. These wire harnesses would need to be replaced before further troubleshooting."

So I think the dealers troubleshooting makes sense mostly. If the NE-(white) wire is shorting to ground that would interfere with the signal to the ECM, However, I don't really see why a transmission connector leaking fluid would matter unless it was causing pins in the plug to ground out together(something ford E40D transmissions are known for) after all there are wires in the transmission fluid connected to the shift solenoids.

Also the dealer wants to replace the whole harness, but couldn't a new wire NE-(white) be run into the harness? I imagine a dealer would not want to break into the harness though.

 

I have seen oil get into harnesses and it can cause some weird issues, I can't see it getting from the transmission harness to the engine harness though as there are no intermediate connectors (I would think there would be oil in the PCM connectors too if that were the case). Typically transmission case connectors leaking will cause transmission issues before they will affect engine operation.

I had a Chevy HHR that kept killing O2 sensors and we couldn't figure out why but there was always traces of oil in the connector, by the 3rd one I did a little more investigating and found an intermediate connector that was full of oil with green dye. Well the only obvious place for that to come from was the A/C pressure sensor, sure enough it was leaking. Replaced the pressure sensor and O2 sensor, cleaned up all the connectors good, and it hasn't failed again.

Dealers typically won't repair harnesses, they will only replace them.

That really doesn't explain the other codes either unless someone was unplugging stuff.