Hi, I have a 1999 Fiat Barva and have the same problem but it is
intermittent, some times it works some times not...
I have been advised it could be one of free things...
1) Fuse not fully seated in the fusebox or dusty...
2) Problem with the with the hatchback door not connecting proberly when
closed (I beleave this is my problem)
3) Motor burn out or cables damaged (this was the advise from Fiat on my
service, when it was not working)
Hope you find what the problem is..
You need to find which connection is which, at the body connector
which feeds the tailgate connector. Simple screwdriver/12V lamp
and croc. clip ( most auto stores ) will do. Haynes or similar
manual, with wiring diagram, also useful for wire colours.
Motor should have a plus and minus feed, plus for self parking
and a switched feed.
Try energising the tailgate side, see if motor runs. If it's
reliable the the problem is likely to be fuse or tailgate
If not, it may be the motor, which when unreliable has a set
of three phosphor bronze springs that make contact to tracks on
the rotating gear that drives the shaft. It's the self parking
mechanism so that the motor keeps running until a finger
reaches a blank spot on the track switching itself off.
In theory it only needs one finger to do this, like the
early self parkers, I think the other two do the intermittent
helps. Fixed mine. Don't bend the fingers too much, they are
dished for better contact, and if pressing on the track too hard,
will soon develop a hole.
Also shaft that drives blade is ordinary (not stainless) steel.
If water get in past the O-ring, it rusts. Motor can't turn, nasty
smell, motor usually survives, and can be resuscitated.
Clean shaft with fine wet/dry until shiny again, reassemble
with silicone grease, redistribute existing grase in
gearbox, renew O-ring,put it all back together.
And of course the dreaded carbon brushes.
Of course if you are not mechanical, and it is the motor,
the local breakers yard might be a good bet.
If you have a rubber gaiter at the top/top side of the tailgate between the
car body and tail gait the gently squeeze it. If you can feel wires as
opposed to a single rear window washer water feed tube, then it is possible
that the wires that run through this bend/flex/stress point have started to
fracture. This is not an uncommon problem, epscially in older cars.
If this is the problem then you can repair them yourself although this is a
bit of a time consuming and tricky procedure. Basically you have to replace
the wires that go through the rubber boot. This means getting access to
both ends, cutting and inserting new pieces of wire.
The IMPORTANT trick is to ensure you NEVER let go of any ends. One of the
better ways to ensure this is to remove the tailgait inner plastic cover and
unplug the wires from the motor so that you have the ability to pull slack
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