Hi XXXXXX. Thank you for asking your question on Just Answer.
Here is the debug/test chart for that particular code, in a PDF file that you should be able to view on your computer and print. This should give you an idea on what needs to be done to troubleshoot this problem.
P0336 Chart
Here is the schematic from that document, in a more readable size.
I hope this helps. Please feel no pressure to accept this answer unless it actually helps you find the problem.
Take Care, Greg A.
Hi again,
I checked through the manuals and the Crankshaft Position Sensor Variation Learn procedure is not mentioned until the 2001 model year, when replacing the crankshaft position sensor. 2000 and below just says to replace the sensor.
If you have the tools, you could try reprogramming the PCM. What I would do is check out the rest of the harness going back to the PCM, from end to end.
Please let me know what you find.
Master Troubleshooter
Working with Electronics & Cars for 25+ Years