Front power windows work intermittently, fuses are good and it has a new main switch.

You say the driver window works? wouldn't be a main fuse or fusible link then -driver door locks and window wouldn't work either. Each door has a module inside (computer) . The driver door has a circuit breaker power feed an a fuse DDM fuse 10amp located in rear junction block circuit breaker is located in under hood maxi fuse block. The circuit breaker also feeds battery voltage to the other door modules too. PDM - passenger door module fuse 10amp located in the instrument panel fuse box and the RDM - rear door module RDM fuse 10amp located in the rear fuse box - under the back seat.

Each power window is connected to a permanent magnet motor. The motor raises or lowers the glass when the door module applies voltage to the motor. The direction the motor turns depends on the polarity of the supply voltage provided by the associated door module. The 2 front doors have their own separate modules. The rear seat contains a single module, which controls both of the rear power windows.
A serial digital communications link, called the simple bus interface, is used for communications between door modules and the driver's door power window switches. The use of serial digital communications allows the use of a single wire to convey switching information between the power door lock switch and the driver's door module (DDM). The serial communication is also used in order to transmit switching information from the DDM to the other 2 door modules.
The door modules apply battery voltage of the correct polarity to the respective window motor when any local, or power door lock switch, UP switch is operated, driving the window up. Battery voltage is applied to the respective window motor in the opposite polarity when any local, or power window switch, DOWN switch is operated, driving the window down.

Driver Door Module (DDM)
The driver's door module (DDM) directly controls the driver's door window motor and the express down window feature. The DDM sends window UP/DOWN messages received from the power door lock switch to the passenger door module (PDM) and to the rear door module (RDM) over the simple bus interface (SBI) line. The DDM also contains a class 2 data link which communicates with the other vehicle system modules. The left front power door locks and the outside power mirror are also controlled through the DDM.
Passenger Door Module (PDM)
The passenger door module (PDM) controls the passenger's door window motor. The PDM controls the passenger's door window directly from the right front power window switch or from instructions over the simple bus interface (SBI). The right front power door locks and the outside power mirror are also controlled through this module.
Rear Door Module (RDM)
The rear door module (RDM) controls both of the rear door window motors. The RDM controls the rear windows directly from the rear door window switches or from instructions over the simple bus interface (SBI).

There is no separate fuse for power windows:
https://www.2carpros.com/questions/nissan-altima-2006-nissan-altima-windows-and-locks

https://oards.com/causes-of-power-windows-not-working/

Checking the fuse is only half the job - use a test light to ensure there is power on both ends of the fuse, then check the power is reaching the motor (switched on).

If power is reaching the motor the problem must be with the ground and then a wiring diagram would be an advantage.
The ground circuit can be complex due to the requirement for self parking and intermittent wipe and 5 wipes after washing the screen. The basic wiper switch is usually two independent switches in tandem. When in the off position the wiper motor grounds through the self parking switching and the main switch...

[PDF]mini body control module - BMW-Planet.com

www.bmw-planet.com/lib/mini/BODY%20CONTROL.pdf

Always check ALL the fuse that supply power to the BC1. ... the heated rear windowand optional heated front screen until the voltage level exceeds 12.2 ... Convenience Opening and Closing of windows and sunroof ..... intermittent wipe, slow, and fastspeeds. .... Road speed has no influence over wiper speed 1 (Slow).

On the actuating motor their is a small solenoid switch that needs to be sprayed with an electrical contact cleaner. It is also a thermal switch that will shut off power if something is binding the closing or opening of the window, and will come back on after about three minutes after it cools down.The best check is to slam the door pretty hard and see if that makes it work. That will pinpoint the problem as being in the door.

Bruce, ur best bet would be to replace the main control switch. change that switch and most likely all will be good. find urself a used main control (window) switch in the front or between front seats. buying used will be a hard find but still u will save money on that.

I hope this work out for u.

Either the master switch or a partial open in the wires in the hinge area.

Has the window motor been replaced? This is a classic symptom of defective window motor. Next time this happens hit the door panel, if the window starts working again that confirms the problem is the motor. This is not fool proof but in most cases the motor will restart, hit the panel down low a few times.

check all fuses and relays first if good check main controll switch on driver door remove passenger door cover remove plug to window switch get a test lite check to see if you have power to pass door window switch have friend move passenger window up and down from main switch on driver door while you check for power on pass window switch plug.if you have no power the main switch on driver could be bad. good luck j.f

If you are certain the fuse is good, then the problem is a bad connection, possibly at the master switch console