2002 Grand Cherokeewipers
 

During a recent ice storm my wipers were locked in the ice and could
not free themselves.
After I freed them with the scraper they won't park properly, that is
they don't home at the end of a cycle. I have been told that I need
either a new motor or a control module. My
background with GM cars tells me that I have a bad ground to the motor
but that doesn't seem to apply here. Has anyone had this problem and if
so what is the correct fix.
Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

That is the biggest killer of the control modules and intermittent
modules.

For some strange reason, the modules aren't fused and when the wiper
motor sits under load drawing 20+ amps, it lets the smoke out of them.

My CJ7's is like that and the $tealer want damn near $500.00 for a new
intermittent module. Mine still park though. My module has smoked out
diodes in it. A couple 50 cent parts....

The motor (mine is anyway) is like the GM one I believe with a unique
ground for the brass ring to park the motor. You 'could' have burned a
spot on the brass parking ring so the ground is open and they just stop
when the switch is off. Some solder would fix that up....

I think opening up either the motor or the module is needed to find out
which one when belly up unless there is some code they throw. (unlikely,
but someone here might know)

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

mike8732y@yahoo.com wrote:
>
> During a recent ice storm my wipers were locked in the ice and could
> not free themselves.
> After I freed them with the scraper they won't park properly, that is
> they don't home at the end of a cycle. I have been told that I need
> either a new motor or a control module. My
> background with GM cars tells me that I have a bad ground to the motor
> but that doesn't seem to apply here. Has anyone had this problem and if
> so what is the correct fix.
> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

That is the biggest killer of the control modules and intermittent
modules.

For some strange reason, the modules aren't fused and when the wiper
motor sits under load drawing 20+ amps, it lets the smoke out of them.

My CJ7's is like that and the $tealer want damn near $500.00 for a new
intermittent module. Mine still park though. My module has smoked out
diodes in it. A couple 50 cent parts....

The motor (mine is anyway) is like the GM one I believe with a unique
ground for the brass ring to park the motor. You 'could' have burned a
spot on the brass parking ring so the ground is open and they just stop
when the switch is off. Some solder would fix that up....

I think opening up either the motor or the module is needed to find out
which one when belly up unless there is some code they throw. (unlikely,
but someone here might know)

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

mike8732y@yahoo.com wrote:
>
> During a recent ice storm my wipers were locked in the ice and could
> not free themselves.
> After I freed them with the scraper they won't park properly, that is
> they don't home at the end of a cycle. I have been told that I need
> either a new motor or a control module. My
> background with GM cars tells me that I have a bad ground to the motor
> but that doesn't seem to apply here. Has anyone had this problem and if
> so what is the correct fix.
> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

That is the biggest killer of the control modules and intermittent
modules.

For some strange reason, the modules aren't fused and when the wiper
motor sits under load drawing 20+ amps, it lets the smoke out of them.

My CJ7's is like that and the $tealer want damn near $500.00 for a new
intermittent module. Mine still park though. My module has smoked out
diodes in it. A couple 50 cent parts....

The motor (mine is anyway) is like the GM one I believe with a unique
ground for the brass ring to park the motor. You 'could' have burned a
spot on the brass parking ring so the ground is open and they just stop
when the switch is off. Some solder would fix that up....

I think opening up either the motor or the module is needed to find out
which one when belly up unless there is some code they throw. (unlikely,
but someone here might know)

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

mike8732y@yahoo.com wrote:
>
> During a recent ice storm my wipers were locked in the ice and could
> not free themselves.
> After I freed them with the scraper they won't park properly, that is
> they don't home at the end of a cycle. I have been told that I need
> either a new motor or a control module. My
> background with GM cars tells me that I have a bad ground to the motor
> but that doesn't seem to apply here. Has anyone had this problem and if
> so what is the correct fix.
> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

That is the biggest killer of the control modules and intermittent
modules.

For some strange reason, the modules aren't fused and when the wiper
motor sits under load drawing 20+ amps, it lets the smoke out of them.

My CJ7's is like that and the $tealer want damn near $500.00 for a new
intermittent module. Mine still park though. My module has smoked out
diodes in it. A couple 50 cent parts....

The motor (mine is anyway) is like the GM one I believe with a unique
ground for the brass ring to park the motor. You 'could' have burned a
spot on the brass parking ring so the ground is open and they just stop
when the switch is off. Some solder would fix that up....

I think opening up either the motor or the module is needed to find out
which one when belly up unless there is some code they throw. (unlikely,
but someone here might know)

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

mike8732y@yahoo.com wrote:
>
> During a recent ice storm my wipers were locked in the ice and could
> not free themselves.
> After I freed them with the scraper they won't park properly, that is
> they don't home at the end of a cycle. I have been told that I need
> either a new motor or a control module. My
> background with GM cars tells me that I have a bad ground to the motor
> but that doesn't seem to apply here. Has anyone had this problem and if
> so what is the correct fix.
> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
Hopefully he will let us know what he finds.


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:44086C3D.20E40238@sympatico.ca...
> That is the biggest killer of the control modules and intermittent
> modules.
>
> For some strange reason, the modules aren't fused and when the wiper
> motor sits under load drawing 20+ amps, it lets the smoke out of them.
>
> My CJ7's is like that and the $tealer want damn near $500.00 for a new
> intermittent module. Mine still park though. My module has smoked out
> diodes in it. A couple 50 cent parts....
>
> The motor (mine is anyway) is like the GM one I believe with a unique
> ground for the brass ring to park the motor. You 'could' have burned a
> spot on the brass parking ring so the ground is open and they just stop
> when the switch is off. Some solder would fix that up....
>
> I think opening up either the motor or the module is needed to find out
> which one when belly up unless there is some code they throw. (unlikely,
> but someone here might know)
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> mike8732y@yahoo.com wrote:
>>
>> During a recent ice storm my wipers were locked in the ice and could
>> not free themselves.
>> After I freed them with the scraper they won't park properly, that is
>> they don't home at the end of a cycle. I have been told that I need
>> either a new motor or a control module. My
>> background with GM cars tells me that I have a bad ground to the motor
>> but that doesn't seem to apply here. Has anyone had this problem and if
>> so what is the correct fix.
>> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
Hopefully he will let us know what he finds.


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:44086C3D.20E40238@sympatico.ca...
> That is the biggest killer of the control modules and intermittent
> modules.
>
> For some strange reason, the modules aren't fused and when the wiper
> motor sits under load drawing 20+ amps, it lets the smoke out of them.
>
> My CJ7's is like that and the $tealer want damn near $500.00 for a new
> intermittent module. Mine still park though. My module has smoked out
> diodes in it. A couple 50 cent parts....
>
> The motor (mine is anyway) is like the GM one I believe with a unique
> ground for the brass ring to park the motor. You 'could' have burned a
> spot on the brass parking ring so the ground is open and they just stop
> when the switch is off. Some solder would fix that up....
>
> I think opening up either the motor or the module is needed to find out
> which one when belly up unless there is some code they throw. (unlikely,
> but someone here might know)
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> mike8732y@yahoo.com wrote:
>>
>> During a recent ice storm my wipers were locked in the ice and could
>> not free themselves.
>> After I freed them with the scraper they won't park properly, that is
>> they don't home at the end of a cycle. I have been told that I need
>> either a new motor or a control module. My
>> background with GM cars tells me that I have a bad ground to the motor
>> but that doesn't seem to apply here. Has anyone had this problem and if
>> so what is the correct fix.
>> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
Hopefully he will let us know what he finds.


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:44086C3D.20E40238@sympatico.ca...
> That is the biggest killer of the control modules and intermittent
> modules.
>
> For some strange reason, the modules aren't fused and when the wiper
> motor sits under load drawing 20+ amps, it lets the smoke out of them.
>
> My CJ7's is like that and the $tealer want damn near $500.00 for a new
> intermittent module. Mine still park though. My module has smoked out
> diodes in it. A couple 50 cent parts....
>
> The motor (mine is anyway) is like the GM one I believe with a unique
> ground for the brass ring to park the motor. You 'could' have burned a
> spot on the brass parking ring so the ground is open and they just stop
> when the switch is off. Some solder would fix that up....
>
> I think opening up either the motor or the module is needed to find out
> which one when belly up unless there is some code they throw. (unlikely,
> but someone here might know)
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> mike8732y@yahoo.com wrote:
>>
>> During a recent ice storm my wipers were locked in the ice and could
>> not free themselves.
>> After I freed them with the scraper they won't park properly, that is
>> they don't home at the end of a cycle. I have been told that I need
>> either a new motor or a control module. My
>> background with GM cars tells me that I have a bad ground to the motor
>> but that doesn't seem to apply here. Has anyone had this problem and if
>> so what is the correct fix.
>> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
Hopefully he will let us know what he finds.


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:44086C3D.20E40238@sympatico.ca...
> That is the biggest killer of the control modules and intermittent
> modules.
>
> For some strange reason, the modules aren't fused and when the wiper
> motor sits under load drawing 20+ amps, it lets the smoke out of them.
>
> My CJ7's is like that and the $tealer want damn near $500.00 for a new
> intermittent module. Mine still park though. My module has smoked out
> diodes in it. A couple 50 cent parts....
>
> The motor (mine is anyway) is like the GM one I believe with a unique
> ground for the brass ring to park the motor. You 'could' have burned a
> spot on the brass parking ring so the ground is open and they just stop
> when the switch is off. Some solder would fix that up....
>
> I think opening up either the motor or the module is needed to find out
> which one when belly up unless there is some code they throw. (unlikely,
> but someone here might know)
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> mike8732y@yahoo.com wrote:
>>
>> During a recent ice storm my wipers were locked in the ice and could
>> not free themselves.
>> After I freed them with the scraper they won't park properly, that is
>> they don't home at the end of a cycle. I have been told that I need
>> either a new motor or a control module. My
>> background with GM cars tells me that I have a bad ground to the motor
>> but that doesn't seem to apply here. Has anyone had this problem and if
>> so what is the correct fix.
>> Thanks in advance, Mike

Re: 2002 Grand Cherokeewipers
 

the wiper motor has a park switch in it and it's now damaged

billy ray wrote:

> Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
> Hopefully he will let us know what he finds.
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:44086C3D.20E40238@sympatico.ca...
> > That is the biggest killer of the control modules and intermittent
> > modules.
> >
> > For some strange reason, the modules aren't fused and when the wiper
> > motor sits under load drawing 20+ amps, it lets the smoke out of them.
> >
> > My CJ7's is like that and the $tealer want damn near $500.00 for a new
> > intermittent module. Mine still park though. My module has smoked out
> > diodes in it. A couple 50 cent parts....
> >
> > The motor (mine is anyway) is like the GM one I believe with a unique
> > ground for the brass ring to park the motor. You 'could' have burned a
> > spot on the brass parking ring so the ground is open and they just stop
> > when the switch is off. Some solder would fix that up....
> >
> > I think opening up either the motor or the module is needed to find out
> > which one when belly up unless there is some code they throw. (unlikely,
> > but someone here might know)
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > mike8732y@yahoo.com wrote:
> >>
> >> During a recent ice storm my wipers were locked in the ice and could
> >> not free themselves.
> >> After I freed them with the scraper they won't park properly, that is
> >> they don't home at the end of a cycle. I have been told that I need
> >> either a new motor or a control module. My
> >> background with GM cars tells me that I have a bad ground to the motor
> >> but that doesn't seem to apply here. Has anyone had this problem and if
> >> so what is the correct fix.
> >> Thanks in advance, Mike