Nissan Repair Questions? Ask a Mechanic for Answers ASAP
How is the engine running without a functional crankshaft position sensor?
Anyhow, what engine is this and what model Nissan is it?
Normally the ECM supplies the crankshaft position sensor with 5 volts. If there is no voltage, check again at the pin at the ECM. If still nothing it could be a faulty ECM but first check all of the ECM fuses.
I see from your other post you mention a crank sensor and a knock sensor. Now that makes more sense a knock sensor cause like I said, the engine shouldn't run with a faulty crank sensor.
I believe the knock sensor produces it's own signal, there is no so-called juice going to it, so it's probably a bad sensor.
Here, this is right out of the repair manual, "Knock sensor detects engine knocking, converts knocking vibration into voltage signal and transmits signal to the ECM. Information is used by ECM to adjust ignition timing accordingly to eliminate detonation.".