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Crank position and cam position on the 3.5L is "HALL EFFECT" sensor.. the sebsor sports 3 wires,, PWR, GND, SIGNAL...

key on,,, the blade toggles the sensor to send a 0-5-0-5-0-5-0-5 volt square wave to PCM..

Best way to inspect is with a scope where you can watch wave form toggle to see that sensor good,, after verifying sensor has needed power & ground
 
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