WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
Crankshaft position sensor
Crankshaft position sensor output voltage fluctuates while crankshaft is revolving
34 crankshaft position sensor signals per crankshaft revolution