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There are two crankshaft position sensor a front and a rear. Here is the location and how to test the sensors.
See Figures 1 and 2
Fig. Fig. 1: Crankshaft position sensor (POS) location detail
Fig. Fig. 2: Backprobe terminals 2 and 3 as shown; touch the tip with a screwdriver, and then quickly pull away while measuring voltage
The voltmeter should read approximately 5 volts.
See Figures 3 and 4
Fig. Fig. 3: The Crankshaft position sensor (REF) is located next to the crankshaft damper
Fig. Fig. 4: Measure the resistance between the two terminals to check for proper operation