Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Do you have access to a diagnostic code reader?
I would check the condition of the throttle body and the blade to make sure they are clean and can move, the blade should be able to moved manually from open to closed and return under sprung load to it's resting position.
When the ignition is switched on, you should be able to see the blade move as the ecu tests it's function.
The throttle body is quite common to fail on these, in the absence of any codes to work from, this would be my first inspection, symptoms would be no throttle response.
As for the battery light, this could be due to low idle and we would need to wait for the throttle to be working before we looked at this system.