Nissan Repair Questions? Ask a Mechanic for Answers ASAP
do you have a factory or aftermarket alarm?
Have you tried removing or unplugging the alarm control unit?
Likely a black box under the drivers side of the dash?
There is no way for me to know with an aftermarket alarm, there are tons of aftermarket variants. A factory alarm is a completely different story as I have detailed wiring diagrams and experience with those.
In most cases when a customer has an aftermarket alarm issue and no wiring diagrams to provide us for reference then we will REMOVE the aftermarket alarm to bring it back to factory wiring to fix the issue.
if the aftermarket alarm was for sure using fuel cut at the pump and you were uncomfortable disconnecting, you could bypass the alarm system running a new power wire from the relay to the pump.