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Leccy window problem
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CarGuru > Open discussion > Leccy window problem 26 April 2005 22:34:54

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Leccy window problem

Mungo "two sheds" Toadfoot 24 April 2005 15:43:33
 Nissan Terrano II.

The driver's window got stuck half-way up/down a long time ago so was wedged
closed with a lump of wood. The owner happened to touch the switch today and
found that the motor was working again so I removed the lump of wood,
re-attached the window mechanism to the window, and it worked fine, up and
down a few times, until I tried to test the obstruction mechanism on the way
up when it stopped working completely again. There's power to the motor but
no amount of tapping or switch flicking would make it work again.

We've managed to get the window to close under its own power by pulling
upwards on the glass and flicking the switch on and off. It's shut now and
it's staying shut until I know why it only works when it feels like it!

Any ideas?

Oh, it is usual for these windows to keep travelling when the switch is
released until you flick the switch to the other direction? Coz thass woss
happening!

Any help greatly appreciated.

Si



Add comment
John 24 April 2005 17:11:50 permanent link ]
 "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message
news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.
Nissan Terrano II.> There's power to the motor but no amount of tapping or switch flicking > would make it work again.

If there is power to the motor when you press the switch, and nothing
happens, then the motor is faulty. Make sure you are checking across both
wires to the motor as the polarity will reverse depending on which way you
press the switch. So you might have ignition power to both motor wires
permanently (which would be normal) but the motor isn't getting an earth.

John


Add comment
Mike G 24 April 2005 17:23:53 permanent link ]
 
"Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message
news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.> Nissan Terrano II.>
The driver's window got stuck half-way up/down a long time ago so was
wedged> closed with a lump of wood. The owner happened to touch the switch today
found that the motor was working again so I removed the lump of wood,> re-attached the window mechanism to the window, and it worked fine, up and> down a few times, until I tried to test the obstruction mechanism on the
up when it stopped working completely again. There's power to the motor
no amount of tapping or switch flicking would make it work again.>
We've managed to get the window to close under its own power by pulling> upwards on the glass and flicking the switch on and off. It's shut now and> it's staying shut until I know why it only works when it feels like it!>
Any ideas?>
Oh, it is usual for these windows to keep travelling when the switch is> released until you flick the switch to the other direction? Coz thass woss> happening!

Sounds like it might have 'one touch' switches.
A quick press, and the window goes all the way up or down, unless, as you
say, switched in the opposite direction.
A longer press, and the window stops when the switch is released.
Mike.

Add comment
Mungo "two sheds" Toadfoot 24 April 2005 18:45:48 permanent link ]
 John wrote:> "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.>
Nissan Terrano II.>> There's power to the motor but no amount of tapping or switch>> flicking would make it work again.>
If there is power to the motor when you press the switch, and nothing> happens, then the motor is faulty.

That was my first thought. It works when it feels like it, it seems, and
when it does work it works properly.
Make sure you are checking across> both wires to the motor as the polarity will reverse depending on> which way you press the switch. So you might have ignition power to> both motor wires permanently (which would be normal) but the motor> isn't getting an earth.

It did nothing until we tugged on the window itself. I wonder if the brushes
are knackered? I assume the circuitry to stop the motor is inside the motor
itself somewhere?

Si


Add comment
Mungo "two sheds" Toadfoot 24 April 2005 18:49:59 permanent link ]
 Mike G wrote:>
Sounds like it might have 'one touch' switches.> A quick press, and the window goes all the way up or down, unless, as> you say, switched in the opposite direction.> A longer press, and the window stops when the switch is released.

Yes, it does have one touch switches but even with a longer press the window
still continues to move when the switch is released until it is flicked in
the opposite direction.

Do you know if this circuitry is inside the motor itself or is it in the
relay box?

When the motor decided it wasn't going to work, the relay was still clicking
and supplying power to it.

Si



Add comment
Conor 24 April 2005 20:05:37 permanent link ]
 In article <Q5mdnf8MEaClLPbfRV­nyhA@pipex.net>, Mungo "two sheds"
Toadfoot says...> John wrote:> > "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message> > news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.> >
Nissan Terrano II.> >> There's power to the motor but no amount of tapping or switch> >> flicking would make it work again.> >
If there is power to the motor when you press the switch, and nothing> > happens, then the motor is faulty.>
That was my first thought. It works when it feels like it, it seems, and > when it does work it works properly.>
Worn brushes then.



--
Conor

"Of all the things I've lost, I miss my mind the most." O.Osbourne.
Add comment
Mungo "two sheds" Toadfoot 24 April 2005 20:10:41 permanent link ]
 Conor wrote:> In article <Q5mdnf8MEaClLPbfRV­nyhA@pipex.net>, Mungo "two sheds"> Toadfoot says...>> John wrote:>>> "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message>>> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.>>>
Nissan Terrano II.>>>> There's power to the motor but no amount of tapping or switch>>>> flicking would make it work again.>>>
If there is power to the motor when you press the switch, and>>> nothing happens, then the motor is faulty.>>
That was my first thought. It works when it feels like it, it seems,>> and when it does work it works properly.>>
Worn brushes then.

I think it might well be, ta.

Si


Add comment
Mike G 24 April 2005 20:41:37 permanent link ]
 
"Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message
news:jKadnYhcyo-uL_­bfRVnyvg@pipex.net..­.> Mike G wrote:> >
Sounds like it might have 'one touch' switches.> > A quick press, and the window goes all the way up or down, unless, as> > you say, switched in the opposite direction.> > A longer press, and the window stops when the switch is released.>
Yes, it does have one touch switches but even with a longer press the
window> still continues to move when the switch is released until it is flicked in> the opposite direction.>
Do you know if this circuitry is inside the motor itself or is it in the> relay box?

AFAIK the one touch control is separate to the motor, or window switch.
I have no idea of exactly where it is, but the relay box sounds like a good
place to look.>
When the motor decided it wasn't going to work, the relay was still
clicking> and supplying power to it.

Have you made sure the window is not sticking in the runners.
A stuck window will cause the motor to cut out.
Just this weekend, one of my rear windows stopped working. A push on the
glass whilst operating the switch and it was working again, but I'll give
the runners a spray of silicone when I get round to it. It should help
prevent it happening again.
Mike.

Add comment
John 26 April 2005 00:04:51 permanent link ]
 
"Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message>> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.>
It did nothing until we tugged on the window itself. I wonder if the > brushes are knackered? I assume the circuitry to stop the motor is inside > the motor itself somewhere?>

There's no circuitry in the motor. It's a motor fullstop. You can spend the
rest of your life guessing what's wrong with it or you can check for power
at the motor with the switch pressed and find out if it's the motor or
switch / controller / wiring. If you don't have a test light or multimeter,
then power up the motor directly to see if it moves.

JOhn


Add comment
Mungo "two sheds" Toadfoot 26 April 2005 12:15:02 permanent link ]
 John wrote:>>> "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message>>> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.>>
It did nothing until we tugged on the window itself. I wonder if the>> brushes are knackered? I assume the circuitry to stop the motor is>> inside the motor itself somewhere?>>
There's no circuitry in the motor. It's a motor fullstop. You can> spend the rest of your life guessing what's wrong with it or you can> check for power at the motor with the switch pressed and find out if> it's the motor or switch / controller / wiring.

I'm aware of that and I have tested it. There is power to the motor and it
works perfectly well - sometimes. This leads me to agree with Conor's
suggestion: that the brushes are worn.

Until I tested the obstruction-sensing­ feature the window worked fine for
about 6 operations up and down; stopping and starting, all the way up and
down etc. That's why I wondered where the magic gubbins was that stops the
window if there happens to be an obstruction, because if the brushes on the
£50+ motor are *not* worn then it is this that is at fault, not the motor.

Si


Add comment
RichardS 26 April 2005 12:44:29 permanent link ]
 "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message
news:SvudnRbnbtU-Zf­DfRVnyiQ@pipex.net..­.> John wrote:> >>> "Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message> >>> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.> >>
It did nothing until we tugged on the window itself. I wonder if the> >> brushes are knackered? I assume the circuitry to stop the motor is> >> inside the motor itself somewhere?> >>
There's no circuitry in the motor. It's a motor fullstop. You can> > spend the rest of your life guessing what's wrong with it or you can> > check for power at the motor with the switch pressed and find out if> > it's the motor or switch / controller / wiring.>
I'm aware of that and I have tested it. There is power to the motor and it> works perfectly well - sometimes. This leads me to agree with Conor's> suggestion: that the brushes are worn.>
Until I tested the obstruction-sensing­ feature the window worked fine for> about 6 operations up and down; stopping and starting, all the way up and> down etc. That's why I wondered where the magic gubbins was that stops the> window if there happens to be an obstruction, because if the brushes on
£50+ motor are *not* worn then it is this that is at fault, not the motor.>

Saved myself over £200 on the price of a new Honda regulator from these
people: http://www.jap-spar­es.com (was lucky enough that they had them
in). If you need to replace it, would be worth a web enquiry (got a phone
call within 10 minutes of submitting it).

Didn't solve my particular problem as it turns out, but I'd have wept if I'd
just shelled out for the new replacement...



--
Richard Sampson

mail me at
richard at olifant d-ot co do-t uk


Add comment
Mungo "two sheds" Toadfoot 26 April 2005 13:35:34 permanent link ]
 RichardS wrote:>
Saved myself over £200 on the price of a new Honda regulator from> these people: http://www.jap-spar­es.com (was lucky enough that they> had them in). If you need to replace it, would be worth a web> enquiry (got a phone call within 10 minutes of submitting it).>
Didn't solve my particular problem as it turns out, but I'd have wept> if I'd just shelled out for the new replacement...

Noted. Thanks Richard.

Si


Add comment
John 26 April 2005 22:34:54 permanent link ]
 
"Mungo "two sheds" Toadfoot" <ufdi@hotmail.com> wrote in message>> >>> news:SuKdna6vEv0fG_­bfRVnytA@pipex.net..­.>>
I'm aware of that and I have tested it. There is power to the motor and >> it>> works perfectly well - sometimes. This leads me to agree with Conor's>> suggestion: that the brushes are worn.>>
Until I tested the obstruction-sensing­ feature the window worked fine for>> about 6 operations up and down; stopping and starting, all the way up and>> down etc. That's why I wondered where the magic gubbins was that stops >> the>> window if there happens to be an obstruction, because if the brushes on> the>> £50+ motor are *not* worn then it is this that is at fault, not the >> motor.>>
Saved myself over £200 on the price of a new Honda regulator from these> people: http://www.jap-spar­es.com (was lucky enough that they had them> in). If you need to replace it, would be worth a web enquiry (got a phone> call within 10 minutes of submitting it).>
Didn't solve my particular problem as it turns out, but I'd have wept if > I'd> just shelled out for the new replacement...>


The controller cuts out the power to the motor if the current goes over a
fixed threshold. If you can put a test light / multimeter across the motor
wires and operate the switch Up and down untill it fails, you can see then
from your test whether there is power there or not. If there is power and
the motor isn't going anywhere, then simple: faulty motor. If the controller
is switching off, then not so simple. You should be able to tell from the
speed and noise of the motor before it stops if there is a fault. Otherwise
you'll have to measure the current draw at that motor and compare it to the
other windows. You'll need to do this at the controller or else take of the
door panels.

John



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CarGuru > Open discussion > Leccy window problem 26 April 2005 22:34:54

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