Car will not start

That is for the crankshaft position sensor, and yes it will make the car shut off. Fairly common on Nissan's, the dealer should have a big box of them. It is located at the right rear of the engine, down low.

With the engine turning over I get no spark.

Check fuse number 34, ECM relay and crankshaft position sensor and also check for power on the coils green and white wire.

Measure its resistances using an ohmmeter and inspect wiring.

Scan for codes, check fuel pressure with a gauge auto parts rent it, and try resetting security system.
Here are a couple of guides to help you:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Check fuel pressure with a gauge auto parts rent it. Here is a guide to help you:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Also, scan for codes and return with the code numbers so that I can further assist you.

Here is a link to an article from this site that features written step by step instructions and pictures explaining how to do the scan yourself. Also, I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

There was a recall for replacing the cam/ crank sensors. Call your local dealer so that they run a VIN number check or you can check it yourself.

https://vinrcl.safercar.gov/vin/

If the recall was complete then try a cam sensor. Here is what the recall letter looked like:

Nissan has determined that some 2000-2003 model year Nissan vehicles may have a defect which relates to motor vehicle safety. The engine might stop running while being driven if the crank position sensor or cam position sensor fails. This may also result in the "Service Engine Soon" light coming on or reduced engine power. If the engine stops running while driving, this could result in a crash without warning.

IDENTIFICATION NUMBER

Nissan has assigned identification number R3022 to this campaign. This number must appear on all communications and documentation of any nature dealing with this campaign.

NUMBER OF VEHICLES POTENTIALLY AFFECTED

The number of vehicles potentially affected is approximately 572,000.

DEALER RESPONSIBILITY

It is the retailer's responsibility to check Service Comm for the campaign status on each vehicle falling within the range of this voluntary safety recall which for any reason enters the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in a dealer's inventory. Federal law requires that new vehicles in dealer inventory which are the subject of a safety recall must be corrected prior to sale. Failure to do so can result in civil penalties by the National Highway Traffic Safety Administration. While federal law applies only to new vehicles, Nissan strongly encourages dealers to correct any used vehicles in their inventory before they are retailed.

Do you have injection pulse? Do you have a good hot blue spark at the plugs?

Poor spark voltage is going to be the problem here. If you have a spark the crank angel sensor is working, you are getting the signal to the ECU, you need to check coil input voltages next.

Clean out the idle air control valve and test the throttle position sensor.