Rear window defrost relay location on 2002 Altima

All the fuses and relays are listed here. Looks like they may be controlled by the Body Control Module?

Fuse Box Diagram Nissan Altima (L31; 2002-2006)

https://fuse-box.info > nissan > nissan-altima-l31-2002-...

Instrument Panel. The fuse box is located behind the cover below and to the left of the steering wheel.

There might be some help here. You can change the word 'windows' for 'moon roof'.

https://www.google.com/search?q=2006+nissan+altima+power+windows+not+working

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System Description NEEL0216 MODELS WITHOUT POWER DOOR LOCKS NEEL0216S01 The rear window defogger system is controlled by the rear window defogger timer. The rear window defogger operates only for approximately 15 minutes. The rear window defogger switch is integral to the air control. Power is supplied at all times
to rear window defogger relay terminal 5
through 20A fuse [No. 25, located in the fuse block (J/B)]. With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 5, located in the fuse block (J/B)]
to rear window defogger relay terminal 1, and
to rear window defogger timer terminal 1. Ground is supplied to air control (rear window defogger switch) terminal 8 and rear window defogger timer terminal 4 through body grounds M14 and M68. With the rear window defogger switch (located in air control) ON, ground is supplied
to rear window defogger timer terminal 3
through air control (rear window defogger switch) terminal 8. Rear window defogger timer terminal 2 then supplies ground to the rear window defogger relay terminal 2. With power and ground supplied, the rear window defogger relay is energized. Power is supplied
through terminal 3 of the rear window defogger relay
to rear window defogger terminal +. Rear window defogger terminal - is grounded through body ground R102. With power and ground supplied, the rear window defogger filaments heat and defog the rear window. When the system is activated, the rear window defogger indicator illuminates in the air control. Power is supplied
from rear window defogger relay terminal 3
to air control (rear window defogger switch) terminal 4. Air control terminal 8 is grounded through body grounds M14 and M68. MODELS WITH POWER DOOR LOCKS NEEL0216S02 The rear window defogger system is controlled by the smart entrance control unit. The rear window defogger operates only for approximately 15 minutes. The rear window defogger switch is integral to the air control. Power is supplied at all times
to rear window defogger relay terminal 5
through 20A fuse [No. 25, located in the fuse block (J/B)] and
to smart entrance control unit terminal 49
through 7.5A fuse [No. 28, located in the fuse block (J/B)]. With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 5, located in the fuse block (J/B)]
to rear window defogger relay terminal 1 and
to smart entrance control unit terminal 27. Ground is supplied to air control (rear window defogger switch) terminal 8 and smart entrance control unit terminals 43 and 64 through body grounds M14 and M68. With the rear window defogger switch (located in air control) ON, ground is supplied
to smart entrance control unit terminal 14
through air control (rear window defogger switch) terminal 1. Smart entrance control unit terminal 37 then supplies ground to the rear window defogger relay terminal 2. With power and ground supplied, the rear window defogger relay is energized. Power is supplied
through terminal 3 of the rear window defogger relay
to rear window defogger terminal +.
Rear window defogger terminal - is grounded through body ground R102. With power and ground supplied, the rear window defogger filaments heat and defog the rear window. When the system is activated, the rear window defogger indicator illuminates in the air control. Power is supplied
from rear window defogger relay terminal 3
to air control (rear window defogger switch) terminal 4. Air control (rear window defogger switch) terminal 8 is grounded through body grounds M14 and M68

2002 Nissan/Datsun Altima 3.5L SFI DOHC 6cyl

The Fuel Filter is located: Under hood, driver side, rear engine area, passenger side of master cylinder, mounted in fuel line

It is located in the SJB smart junction box , it's a fuse / relay center / microprocessor ! Fuse # F2.10 30 amp . location -behind left side dash panel . Also check the accessory relay . Top relay left side , same location SJB .
Visual Inspection Chart Mechanical Electrical

• Door window regulator and motor
• Door glass top run
• Door window glass

• Loose, corroded connectors
• Circuitry
• Window control switch
• Battery junction box (BJB) fuse(s):
  • 1 (60A)
  • 3 (60A)
  • 11 (50A)
• Smart junction box (SJB) fuse(s):
  • 7 (20A)
  • 27 (10A)
  • 30 (10A)
• SJB circuit breaker 10 (30A)
• SJB rear window defrost relay 1
• Relay center box 1 rear window defrost relay 2
• Delayed accessory relay
• Battery saver relay
• Rear window defrost grid

this relay is located as part of the switch itself. when you replace the switch you are replacing the relay.

the rear defrost relay location.
its here.
$4 too look...
https://suzukipitstopplus.com/Products/1173-2001-swift-service-manual.aspx

or look at alldata.com
any time.

Yes, there should be a timing mechanism that shuts the defroster off after a certain time. Are you sure you are giving it enough time? Usually about 10 or 15 minutes when most defrosters turn off automatically. Try contacting a dealer service or tech rep about the system- how long it should stay on, how to diagnose, where such parts are located, etc.

check radiator -thermosate-hoses -heater core far as the rear defrost window it works off of voltage maybe have somebody to look at this for you

the switch is protected by a fuse and it activates the relay which handles the high current needed to operaate the back window. You should have a light that comes on when the switch is turned on.

it's behind dash panel, center.

two locations, one under dash and one under hood. without your manual, thats about all I can help you with