relay, way assume there is one?
did you SCAN it yet ? got PCI comm errors. or door module errors?
why not post symptoms and ask for help.
that works not guessing... in 99% of all cases.
WJ jeep covers all this in the FSM book, or at alldata.com
ending the guessing game. fast.
chapter 8 is wiring in the jeep book.
next is power window . 8N- page 33 is there. theory of ops.
are all windows dead, or just one, must I ask>?
FSM chapter 8w-60 -2 shows,
it has 2 modules
the driver module DDM and passenger module, fuses and motors.
now the bad news.
the BCM brain, sees what buttons you press, then the BCM
sends a digital message stream to the MODULES
the modules then do as they are told. via the PCI network.
(that is how it all works with min words)
so what does the shop do.
well he scans first. (after checking all fuse)
PDC fuse 12 , 50 amps. (first if all windows are dead)
now on page 4 they show RHD and export models with no brain
that is , just door switches that go to motor direct, and again
not one relay, in this system..
BCM top left
PCI bus below it.
driver door module getting commands. (serial)
look ma' no switches or relays. (usa cars)
what is inside the module is a jeep secret.
the BCM does the magic where by you command driver window down and it does so automatically. this is software doing that in the BCM. a big clue if your jeep has this BCM system. show above.
ill now quote the FSM book
The most reliable, efficient, and accurate means to
diagnose the power window system requires the use
of a DRB scan tool and the proper Diagnostic Procedures
manual. The DRB scan tool can provide confirmation
that the PCI data bus is functional
, that all
of the electronic modules are sending and receiving
the proper messages on the PCI data bus
, and that
the power window motors are being sent the proper
hard wired outputs by the door modules for them to
perform their power window system functions.
if you dont have this option DDM ?
then the fuse is blown
or the switches are bad, super easy to diagnose, ask. how.