93 voyager radiator fan and AC clutch
 

I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
the radiator fan has quit turning on, and the air conditioner quit
working. They both quit at the same time as far as I know. The AC is
still fully charged, and all of the dashboard controls work including
the blower, etc. It's just that the clutch never engages.

I got the trouble codes by turning the key, and it gave me code 33,
which according to the manual is a short or open condition in the AC
compressor clutch relay.

Does this relay control both the AC clutch and the radiator fan? There
is only one fan, rather than one for the radiator and one for the AC.
So it makes sense in a way that a single fault could disable both the
radiator fan and the AC.

Looking at the wiring diagram I also see a "high speed fan switch" and a
"low speed fan switch". The fan never turns on, so I'm thinking that
the problem is not likely one of these, but I could be wrong of course.

Is there a common failure that occurs with these vehicles? Any advice
on where to find the switches and relay for this system? Unfortunately
the fine folks at Chrysler decided not to label any of thes switches or
relays on the vehicle for some reason. I'm sure they're having a good
laugh about it now...

"Robbie and Laura Reynolds" > wrote in message
...
> I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
> the radiator fan has quit turning on, and the air conditioner quit
> working. They both quit at the same time as far as I know. The AC is
> still fully charged, and all of the dashboard controls work including
> the blower, etc. It's just that the clutch never engages.
>
> I got the trouble codes by turning the key, and it gave me code 33,
> which according to the manual is a short or open condition in the AC
> compressor clutch relay.
>
> Does this relay control both the AC clutch and the radiator fan? There
> is only one fan, rather than one for the radiator and one for the AC.
> So it makes sense in a way that a single fault could disable both the
> radiator fan and the AC.
>
> Looking at the wiring diagram I also see a "high speed fan switch" and a
> "low speed fan switch". The fan never turns on, so I'm thinking that
> the problem is not likely one of these, but I could be wrong of course.
>
> Is there a common failure that occurs with these vehicles? Any advice
> on where to find the switches and relay for this system? Unfortunately
> the fine folks at Chrysler decided not to label any of thes switches or
> relays on the vehicle for some reason. I'm sure they're having a good
> laugh about it now...
\

Start with checking the fusible links just under the washer bottle on the
left fender for a blown circuit.

Glenn Beasley
Chrysler Teck

On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:

> I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
> the radiator fan has quit turning on, and the air conditioner quit
> working. They both quit at the same time as far as I know. The AC is
> still fully charged, and all of the dashboard controls work including
> the blower, etc. It's just that the clutch never engages.
>
> I got the trouble codes by turning the key, and it gave me code 33,
> which according to the manual is a short or open condition in the AC
> compressor clutch relay.
>
> Does this relay control both the AC clutch and the radiator fan? There
> is only one fan, rather than one for the radiator and one for the AC.
> So it makes sense in a way that a single fault could disable both the
> radiator fan and the AC.

Yep. There is a relay for the radiator fan and a relay for the A/C
compressor clutch. They are interlinked such that the compressor relay
won't close unless the rad fan relay is closed. A single fusible link
feeds them both. You've got some diagnosis to do -- and you'll need a
factory service manual (not Haynes, not Chilton) to do it.

"Daniel J. Stern" wrote:
>
> On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:
>
> > I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
> > the radiator fan has quit turning on, and the air conditioner quit
> > working. They both quit at the same time as far as I know. The AC is
> > still fully charged, and all of the dashboard controls work including
> > the blower, etc. It's just that the clutch never engages.
> >
> > I got the trouble codes by turning the key, and it gave me code 33,
> > which according to the manual is a short or open condition in the AC
> > compressor clutch relay.
> >
> > Does this relay control both the AC clutch and the radiator fan? There
> > is only one fan, rather than one for the radiator and one for the AC.
> > So it makes sense in a way that a single fault could disable both the
> > radiator fan and the AC.
>
> Yep. There is a relay for the radiator fan and a relay for the A/C
> compressor clutch. They are interlinked such that the compressor relay
> won't close unless the rad fan relay is closed. A single fusible link
> feeds them both. You've got some diagnosis to do -- and you'll need a
> factory service manual (not Haynes, not Chilton) to do it.


I also have a 93 Caravan with 3.0. It's a different engine, but the
chassis wiring is the same as far as I know, and everything on it
works. I can do the classic "switch parts until it works" routine with
the other van. If I knew which relays and switches to look at, I could
determine whether the fault is in the parts or in the fusible links.
The problem is that it's hard to tell which ones are which. Does
anybody here know off the top of their head which relays to look at?

"Robbie and Laura Reynolds" > wrote in message
...
>
>
> "Daniel J. Stern" wrote:
> >
> > On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:
> >
> > > I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
> > > the radiator fan has quit turning on, and the air conditioner quit
> > > working. They both quit at the same time as far as I know. The AC is
> > > still fully charged, and all of the dashboard controls work including
> > > the blower, etc. It's just that the clutch never engages.
> > >
> > > I got the trouble codes by turning the key, and it gave me code 33,
> > > which according to the manual is a short or open condition in the AC
> > > compressor clutch relay.
> > >
> > > Does this relay control both the AC clutch and the radiator fan?
There
> > > is only one fan, rather than one for the radiator and one for the AC.
> > > So it makes sense in a way that a single fault could disable both the
> > > radiator fan and the AC.
> >
> > Yep. There is a relay for the radiator fan and a relay for the A/C
> > compressor clutch. They are interlinked such that the compressor relay
> > won't close unless the rad fan relay is closed. A single fusible link
> > feeds them both. You've got some diagnosis to do -- and you'll need a
> > factory service manual (not Haynes, not Chilton) to do it.
>
>
> I also have a 93 Caravan with 3.0. It's a different engine, but the
> chassis wiring is the same as far as I know, and everything on it
> works. I can do the classic "switch parts until it works" routine with
> the other van. If I knew which relays and switches to look at, I could
> determine whether the fault is in the parts or in the fusible links.
> The problem is that it's hard to tell which ones are which. Does
> anybody here know off the top of their head which relays to look at?

Check the fusible links as I stated earlier, thats you you want to start.

Yeah, good idea. I've had trouble with those on another vehicle
before. And it makes sense if one of them feeds both systems.

Thanks



maxpower wrote:

> Check the fusible links as I stated earlier, thats you you want to start.

On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:

> I also have a 93 Caravan with 3.0. It's a different engine, but the
> chassis wiring is the same as far as I know, and everything on it works.
> I can do the classic "switch parts until it works" routine with the
> other van. If I knew which relays and switches to look at, I could
> determine whether the fault is in the parts or in the fusible links.
> The problem is that it's hard to tell which ones are which. Does
> anybody here know off the top of their head which relays to look at?

The ones called out in the factory service manual.

Sorry...zero tolerance for people too goddamned cheap and lazy to buy the
number-one necessary tool for DIY car repairs.

"Daniel J. Stern" wrote:
>

> The ones called out in the factory service manual.
>
> Sorry...zero tolerance for people too goddamned cheap and lazy to buy the
> number-one necessary tool for DIY car repairs.


I thought that's what Usenet was for.

I don't know about being lazy, but you're right about the cheap part.

"Robbie and Laura Reynolds" > wrote in message
...
>
>
> "Daniel J. Stern" wrote:
>>
>> On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:
>>
>> > I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
>> > the radiator fan has quit turning on, and the air conditioner quit
>> > working. They both quit at the same time as far as I know. The AC is
>> > still fully charged, and all of the dashboard controls work including
>> > the blower, etc. It's just that the clutch never engages.
>> >
>> > I got the trouble codes by turning the key, and it gave me code 33,
>> > which according to the manual is a short or open condition in the AC
>> > compressor clutch relay.
>> >
>> > Does this relay control both the AC clutch and the radiator fan? There
>> > is only one fan, rather than one for the radiator and one for the AC.
>> > So it makes sense in a way that a single fault could disable both the
>> > radiator fan and the AC.
>>
>> Yep. There is a relay for the radiator fan and a relay for the A/C
>> compressor clutch. They are interlinked such that the compressor relay
>> won't close unless the rad fan relay is closed. A single fusible link
>> feeds them both. You've got some diagnosis to do -- and you'll need a
>> factory service manual (not Haynes, not Chilton) to do it.
>
>
> I also have a 93 Caravan with 3.0. It's a different engine, but the
> chassis wiring is the same as far as I know, and everything on it
> works. I can do the classic "switch parts until it works" routine with
> the other van. If I knew which relays and switches to look at, I could
> determine whether the fault is in the parts or in the fusible links.
> The problem is that it's hard to tell which ones are which. Does
> anybody here know off the top of their head which relays to look at?

My 95 3.0 they relays are all labeled on the under-side of the power control
centers cover.
With the exception of two if I remember correctly, they (relays) are also
all the same so swapping is what I did to track down that it was a bad Rad
Fan relay when mine failed.

"Daniel J. Stern" > wrote in message
n.umich.edu...
> On Sat, 16 Jul 2005, Robbie and Laura Reynolds wrote:
>
>> I also have a 93 Caravan with 3.0. It's a different engine, but the
>> chassis wiring is the same as far as I know, and everything on it works.
>> I can do the classic "switch parts until it works" routine with the
>> other van. If I knew which relays and switches to look at, I could
>> determine whether the fault is in the parts or in the fusible links.
>> The problem is that it's hard to tell which ones are which. Does
>> anybody here know off the top of their head which relays to look at?
>
> The ones called out in the factory service manual.
>
> Sorry...zero tolerance for people too goddamned cheap and lazy to buy the
> number-one necessary tool for DIY car repairs.

Hmmm, I have the manuals for my vehicles, but still have a question or two
from time to time.
I also find it quite easy to share what I know with others seeking
assistance. Not everyone has need for a manual if they do not do ALL of
their own maintenance and coming to Usenet groups or other forums is often
(as in this case) a logical move. Sometimes they will stumble upon courteous
and knowledgeable folks willing to help out.