Problem with Corsa C imtemittent wiper
The-Sbray
I have a 2001 Corsa C which has a problwm with its intemittent wipe action.
When you try to set it for intermittent, the wipers stop half-way across the
windscreen. The auto park action also fails when in normal and fast wipe
settings.
I've replaced the motor and checked the linkage, which both seem fine.
Anyone have an idea as to what could be causing the problem?
Conor
says...
faulty.
You can check for the voltage to the motor - one should be there for as
long as the ignition is turned on and one just as the wiper switch is
turned on. If the constant one is there, its likely the internal
switch.
--
Conor
I only please one person per day. Today is not your day. Tomorrow isn't
looking good either. - Scott Adams
Mark Smith
Could it be the control relay(if it has one)????
"Conor" <conor_...@hotmail.com> wrote in message
news:6fuebaF...@mid.individual.net...
robgraham
"The-Sbray" <the-...@nospamemail.com> wrote in message
news:JXmmk.38491$E41....@text.news.virginmedia.com...
I had a similar problem once and it turned out to be the fuse.
Rob Graham
The-Sbray
"Mark Smith" <spik...@tiscali.co.uk> wrote in message
news:489a0465$1...@mk-nntp-2.news.uk.tiscali.com...
Thanks All. I'll check the relay and fuse at the weekend.
Tom Burton
>>
>
> Thanks All. I'll check the relay and fuse at the weekend.
Please post back with your finding i am having a similar problem with my
Combo van.
Tom
John
"The-Sbray" <the-...@nospamemail.com> wrote in message
news:JXmmk.38491$E41....@text.news.virginmedia.com...
Bad earth through the switch? Most wipers are brought to a sudden stop by
the switch not only removing power (which it temporarily resumed by the park
mechanism until they get to the correct place) - the motor is then earthed
through the switch / steering column. This has the effect of braking the
motor when it starts to act like a generator with its own inertia,
John
"John" <Who90...@ntlworld.com> wrote in message
news:AOJmk.11237$x45....@newsfe17.ams2...
'coast' to a stop. The wiper switch actually shorts the motor to earth to
make it stop dead in the sector where the self park switch is aligned.
Obviously a poor earth will allow the motor to coast on and then re-energise
when the self park switch closes again
Conor
> In normal operation if you switch off the ignition the wipers will tend to
> 'coast' to a stop. The wiper switch actually shorts the motor to earth to
> make it stop dead in the sector where the self park switch is aligned.
> Obviously a poor earth will allow the motor to coast on and then re-energise
> when the self park switch closes again
>
Actually it doesn't. It cuts the supply from the constant ignition
switched 12V. You're talking complete bollox.
Chris Whelan
> In article <BcLmk.89137$8w4....@newsfe30.ams2>, John says...
>
>> In normal operation if you switch off the ignition the wipers will tend
>> to 'coast' to a stop. The wiper switch actually shorts the motor to earth
>> to make it stop dead in the sector where the self park switch is aligned.
>> Obviously a poor earth will allow the motor to coast on and then
>> re-energise when the self park switch closes again
>>
> Actually it doesn't. It cuts the supply from the constant ignition
> switched 12V. You're talking complete bollox.
On pretty much anything decent made in the last 20 years, when the wipers
are switched off the switched feed to the motor is removed, the constant
feed powers the motor until just before the park position, the
wipers "coast" the last few millimeters to the park position, and finally
the motor is earthed to bring it to an immediate stop. A poor earth
connection could indeed cause the wipers to fail to park.
Conor, your Capri might not be wired like this, but your Mondeo is, without
question.
Chris
--
Remove prejudice to reply.
Les Ross
news:oxVmk.127323$Lw1....@newsfe29.ams2...
My 95 Corsa's wipers stop as soon as I turn off the ignition, no parking.
--
Les Ross
Certified by a
Professional
John
"Les Ross" <m...@home.com> wrote in message
news:WfGdnac62KAmywHV...@posted.plusnet...
Of course they do - but they don't stop dead (as they would with a properly
wired) unless you perhaps have the heater fan and radio on - in which case
the inertia will be shunted through those items.
John
"Chris Whelan" <cawh...@prejudicentlworld.com> wrote in message
news:oxVmk.127323$Lw1....@newsfe29.ams2...
Thankls Chris for clearly explaining what happens.
Conor should know that a DC motor will act as a dynamo. Shorting the
'dynamo' creates a powerful braking force. If the braking force is not there
then the motor will coast a liittle allowing the wipers to re-energise from
the constant feed supply. This is controlled by a disc of contacts in the
wiper motor gear pinion.
The wiper switch either:
Provides power to start the wipers from the parked position - to enable them
to pick up the 'constant feed' - or it shorts out the motor.
I await Conor's next insulting response.
John
The earthing (shorting) of the motor will be done by the relay on most
modern cars. Look for an earth at the relay - as well as clean connections.
Another way of thinking about the switch is to think of it as a 'bridging
contact' across the 'at rest' position of the wipers. Once the wipers have
been powered by the switch or relay out of the parking position - the
circuit is maintained by the constant feed through the parking switch on the
gear pinion. The next time the wipers get to the parking position the motor
will either get its power for a few degrees of turn from the switch - or it
will hit earth and brake.
Hence the single wipe control is nothing more than a 'quick nudge' to move
the wipers into the sector where they get the feed from the constant supply.
Conor
> Of course they do - but they don't stop dead
No, inertia keeps them going a few mm...
> (as they would with a properly
> wired) unless you perhaps have the heater fan and radio on - in which case
> the inertia will be shunted through those items.
>
FFS...do you even have a clue WTF you're talking about?
Conor
> I await Conor's next insulting response.
>
What is there I could possibly say that would be apt for such a level
of ignorance?
Perhaps you should take a wiper motor apart and then you'll see for
yourself.
Chris Whelan
[...]
>
> Perhaps you should take a wiper motor apart and then you'll see for
> yourself.
If he were to do so, inside he would find a single-pole changeover switch.
It would have one connection going to the motor, one going to either the
wiper switch or the wiper relay, and the third connection going to.....
earth!
Chris Whelan
> In article <BcLmk.89137$8w4....@newsfe30.ams2>, John says...
>
>> In normal operation if you switch off the ignition the wipers will tend
>> to 'coast' to a stop. The wiper switch actually shorts the motor to earth
>> to make it stop dead in the sector where the self park switch is aligned.
>> Obviously a poor earth will allow the motor to coast on and then
>> re-energise when the self park switch closes again
>>
> Actually it doesn't. It cuts the supply from the constant ignition
> switched 12V. You're talking complete bollox.
>
http://www.nls.net/mp/volks/schem/wiper.htm
Convinced now?
:-)
John
Let us know how you get along with the problem.
Are all the connections on the little gearbox end of the motor in good
condition - this is where the self parking switch is located. Was it all
new - or reconditioned?
Conor
Les Ross
Bloody foreigners, how am I supposed to understand that? As if I really care
anyway. :o)
Chris Whelan
> In article <n12nk.10071$Z24...@newsfe19.ams2>, Chris Whelan says...
>> Conor wrote:
>>
>> > In article <BcLmk.89137$8w4....@newsfe30.ams2>, John says...
>> >
>> >> In normal operation if you switch off the ignition the wipers will
>> >> tend to 'coast' to a stop. The wiper switch actually shorts the motor
>> >> to earth to make it stop dead in the sector where the self park switch
>> >> is aligned. Obviously a poor earth will allow the motor to coast on
>> >> and then re-energise when the self park switch closes again
>> >>
>> > Actually it doesn't. It cuts the supply from the constant ignition
>> > switched 12V. You're talking complete bollox.
>> >
>>
>> http://www.nls.net/mp/volks/schem/wiper.htm
>>
>> Convinced now?
>>
> Nope.
<Shrug>
Won't be the first time you have been wrong though, will it?
;-)
moray
>> Conor wrote:
>>
>> > In article <BcLmk.89137$8w4....@newsfe30.ams2>, John says...
>> >
>> >> In normal operation if you switch off the ignition the wipers will
>> >> tend
>> >> to 'coast' to a stop. The wiper switch actually shorts the motor to
>> >> earth
>> >> to make it stop dead in the sector where the self park switch is
>> >> aligned.
>> >> Obviously a poor earth will allow the motor to coast on and then
>> >> re-energise when the self park switch closes again
>> >>
>> > Actually it doesn't. It cuts the supply from the constant ignition
>> > switched 12V. You're talking complete bollox.
>> >
>>
>> http://www.nls.net/mp/volks/schem/wiper.htm
>>
>> Convinced now?
>>
> Nope.
Conor,
I'd put the spade down before that hole gets any deeper.
moray
"The-Sbray" <the-...@nospamemail.com> wrote in message
news:JXmmk.38491$E41....@text.news.virginmedia.com...
Wiring diagram can be found at
http://farm4.static.flickr.com/3194/2746758240_89c9012a9d_o.gif
First tests I do are at the wiper motor connector (easiest bit to get to)
with it disconnected.
Check for the following on the vehicle wiring side (The terminal letters are
marked on the connector)
Terminal A should have 12V with wiper switch on speed 1.
Terminal E should have 12V with wiper switch on speed 2.
Terminal B should have continuity to earth.
(those 3 are obviously working if the wipers move, so you can ignore them)
Termainl D should have a permanent 12V feed with the ignition on.
Now with the ignition switch and wiper switches off, you should have
continuity between Terminals C and A, which I'm guessing is where the
problem lies. The wiring between these two terminals, passes through the two
wiper motor relays, and a fault with the NC (normally closed) contacts in
either relay will cause the park system to fail.
Unfortunetly, the relays are located in the Body Control Module housing.
That's the big plastic box at the N/S (passenger side) of the scuttle panel.
You'll want an appropriately sized torx screwdriver (25 I think, or possibly
20) to unscrew the cover. You do not want to damage the box/seal, otherwise
you risk filling the BCM with water and getting a nice water sloshing sound,
aswell as water leaking into the vehicle.
The two relays are in the front group of relays, and are the two in the
centre row (if you take the row as as running front/back) with K69A being at
the front behind the big yellow flasher unit, and K69B the next one back.
And now the bit just for Conor (you'll need to study the wiring diagram for
this bit).
With the wipers on, power is applied direct to the wiper motor terminals A
or E dependant on speed.
When the wipers are turned off, power is provided through terminal D, which
passes through the park switch, then back through the NC contacts in both
relays before powering the motor through terminal A. When the park position
is reached and the switch is activated, it moves the contact from Termainl D
(+12v ignition supply) to Termanl B (earth), which in effect shorts Terminal
A to ground, braking the now freewheeling motor.
If you were to disconnect terminal C, under certain conditions the wiper
motor could quite easily freewheel past the park position and keep going.
The-Sbray
"moray" <mtbhyp...@hotmaildotco.tuk> wrote in message
news:g7k49l$elj$1$8300...@news.demon.co.uk...
Absolutely brilliant information moray. Now all I need is a day when it's
not constantly raining (LOL).
Thanks again.
Tom Burton
> Unfortunetly, the relays are located in the Body Control Module housing.
> That's the big plastic box at the N/S (passenger side) of the scuttle
> panel. You'll want an appropriately sized torx screwdriver (25 I think, or
> possibly 20) to unscrew the cover. You do not want to damage the box/seal,
> otherwise you risk filling the BCM with water and getting a nice water
> sloshing sound, aswell as water leaking into the vehicle.
> The two relays are in the front group of relays, and are the two in the
> centre row (if you take the row as as running front/back) with K69A being
> at the front behind the big yellow flasher unit, and K69B the next one
> back.
>
>
Is this the same location for a Combo Van 53plate 1.6 Petrol?
Just id rather ask before taking it to bits...
Any ideas on the cost of the relays?
Tom
moray
"Tom Burton" <thomas...@freezingcoldmail.com> wrote in message
news:6g6keoF...@mid.individual.net...
Should be identical.
Combo C is identical to the Corsa C upto the dash level on the B-Pillar.
Only difference in that area is the suspension specs.
Relays should only be a few pound from a motor factors.
I'm pretty sure the wipers use standard size relays, but there's two common
pin layouts, so check the diagram on the side of the relay/pin numbers to
make sure when buying them. Failing that, just goto vauxhall that way you
should get the right ones if you want to buy them before you strip the
scuttle off.
Tom Burton
"moray" <mtbhyp...@hotmaildotco.tuk> wrote in message
Thanks, still not had chance to have a look, too busy messing with
suspension (see other post) and it's been too wet to mess about on the
street. One think I have noticed is when the wipers are in operation there
is [1] some interference on the radio, which increases should the wipers
stop in any position other than the proper park position.
[1] possible only on the down swipe - but I haven't listened too hard/paid
much attention.
Thanks so far anyway
Tom
John
bushes then an earth connection is needed otherwise it will be trying to
earth through the spindles.
moray
If it was a bad earth, the wipers wouldn't work on any speed.
John
"moray" <mtbhyp...@hotmaildotco.tuk> wrote in message
Depends how "bad". A bad earth in a light cluster can make a rear light dim!
A wiper earthing through the spindles would be a noisy bad earth. Think back
to the old days when we had to emery polish the earth contact area of car
radio aerials when we fitted them!
No earth would prevent them from working - a bad earth would cause
interference and poor performance.
moray
I'll rephrase that.
If it was a bad earth, the wiper fault would be consistent on any speed.
The fact that the wipers work on intermittent, and speeds 1&2, would
indicate that the earth is doing a good enough job. The motor/switch/BCM
doesn't change the motor earth just because you've moved the switch from on
to off.
John
"moray" <mtbhyp...@hotmaildotco.tuk> wrote in message
I was using the radio interference as an indication of a likely poor
connection.
Tom Burton
>
> I was using the radio interference as an indication of a likely poor
> connection.
>
Hopefully in the relay the controls them?
It seems to be the park aspect that is the problem, as it just stops all
over the place on intermittent, and when the stalk is returned to off from
slow or fast wipe the wipers will park wherever they feel like it....
Tom