Originally Posted by twcustoms
There won't be any power there at key on; it uses 4 magnetic pickup coils that only generate voltage when the engine begins to turn. If you measure at the proper wires (with AC mV selected on your multimeter) you will find mV of AC voltage while cranking the engine.
You really need to disconnect the connector and measure the resistance of each of the 4 coils.
Edit: Oh, didn't see where you said you tested the Crk/Cyl sensor and it was good. So all 4 were putting out a proper voltage upon cranking? You should see the same voltage throughout the system while cranking all the way up to the ECU; if you do not then you have either a bad connection or high resistance in one of the connectors etc. etc.. You are surely testing for AC voltage across two wires correct? You should not be testing for DC anything and attaching to chassis ground. Also, to repeat myself, you should not see any voltage there upon key on, only while cranking (AC mV).
Double Edit: When you turn the key on does your check engine light turn on for a few seconds? Your sensors are all grounded through your ECU; to quickly test if you have good ECU ground connect your meter up with your red lead on the positive battery post and your black lead on any sensor's ground; you should see full battery voltage.