Jerry Bransford

The case provides a continuous ground, the relay provides a switched +12
volts to energize the solenoid. Is your HVAC control on defrost by any
chance?

JEEPR wrote:
> substituting relays does not rectify it
> two wire connector at compressor
> need to know if its a case ground on the solenoid
>
>
> 0|||||||0
> Tact is the ability to describe others as they see themselves
> "JEEPR" <YJJPS@nospam@yahoo.ca> wrote in message
> news:tCSfe.18608$B82.432652@news20.bellglobal.com. ..
>
>>When I pull the relay the solenoid de-energizes.
>>I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
>>ground for the solenoid to energize.
>>
>>
>> 0|||||||0
>>Tact is the ability to describe others as they see themselves
>>
>>
>>"DougW" <post.replies@invalid.address> wrote in message
>>news:JhRfe.8127$Ri4.4760@okepread07...
>>
>>>JEEPR did pass the time by typing:
>>>
>>>>Have an 98 Grand Cherokee
>>>>The a/c clutch solenoid is staying engaged and running down my
>
> battery.
>
>>>>Does any one know if this is a ground seeking or power seeking circuit
>>
>>to
>>
>>>>activate the solenoid.
>>>>I know a lead comes from the powertrain control module to the a/c
>>
>>compressor
>>
>>>>clutch relay, but don't have a diagram or schematic to follow.
>>>>Is there a way to test the powertrain control module.
>>>
>>>Should be the same as my 93ZJ
>>>http://revbeergoggles.com/temp/zj-59.jpg
>>>
>>>Pull the relay. If the clutch is still engaged then
>>>it's dead. The clutch can be replaced without having to
>>>disconnect the compressor.
>>>
>>>--
>>>DougW
>>>
>>>
>>
>>
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

JEEPR

Initially it was but it is also doing it in the off selection, why?

--

Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:chTfe.14636$tQ.8380@fed1read06...
> The case provides a continuous ground, the relay provides a switched +12
> volts to energize the solenoid. Is your HVAC control on defrost by any
> chance?
>
> JEEPR wrote:
> > substituting relays does not rectify it
> > two wire connector at compressor
> > need to know if its a case ground on the solenoid
> >
> >
> > 0|||||||0
> > Tact is the ability to describe others as they see themselves
> > "JEEPR" <YJJPS@nospam@yahoo.ca> wrote in message
> > news:tCSfe.18608$B82.432652@news20.bellglobal.com. ..
> >
> >>When I pull the relay the solenoid de-energizes.
> >>I'm thinking there is a short somewhere or chaffed wire, supplying maybe
a
> >>ground for the solenoid to energize.
> >>
> >>
> >> 0|||||||0
> >>Tact is the ability to describe others as they see themselves
> >>
> >>
> >>"DougW" <post.replies@invalid.address> wrote in message
> >>news:JhRfe.8127$Ri4.4760@okepread07...
> >>
> >>>JEEPR did pass the time by typing:
> >>>
> >>>>Have an 98 Grand Cherokee
> >>>>The a/c clutch solenoid is staying engaged and running down my
> >
> > battery.
> >
> >>>>Does any one know if this is a ground seeking or power seeking circuit
> >>
> >>to
> >>
> >>>>activate the solenoid.
> >>>>I know a lead comes from the powertrain control module to the a/c
> >>
> >>compressor
> >>
> >>>>clutch relay, but don't have a diagram or schematic to follow.
> >>>>Is there a way to test the powertrain control module.
> >>>
> >>>Should be the same as my 93ZJ
> >>>http://revbeergoggles.com/temp/zj-59.jpg
> >>>
> >>>Pull the relay. If the clutch is still engaged then
> >>>it's dead. The clutch can be replaced without having to
> >>>disconnect the compressor.
> >>>
> >>>--
> >>>DougW
> >>>
> >>>
> >>
> >>
> >
> >
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/

JEEPR

Initially it was but it is also doing it in the off selection, why?

--

Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:chTfe.14636$tQ.8380@fed1read06...
> The case provides a continuous ground, the relay provides a switched +12
> volts to energize the solenoid. Is your HVAC control on defrost by any
> chance?
>
> JEEPR wrote:
> > substituting relays does not rectify it
> > two wire connector at compressor
> > need to know if its a case ground on the solenoid
> >
> >
> > 0|||||||0
> > Tact is the ability to describe others as they see themselves
> > "JEEPR" <YJJPS@nospam@yahoo.ca> wrote in message
> > news:tCSfe.18608$B82.432652@news20.bellglobal.com. ..
> >
> >>When I pull the relay the solenoid de-energizes.
> >>I'm thinking there is a short somewhere or chaffed wire, supplying maybe
a
> >>ground for the solenoid to energize.
> >>
> >>
> >> 0|||||||0
> >>Tact is the ability to describe others as they see themselves
> >>
> >>
> >>"DougW" <post.replies@invalid.address> wrote in message
> >>news:JhRfe.8127$Ri4.4760@okepread07...
> >>
> >>>JEEPR did pass the time by typing:
> >>>
> >>>>Have an 98 Grand Cherokee
> >>>>The a/c clutch solenoid is staying engaged and running down my
> >
> > battery.
> >
> >>>>Does any one know if this is a ground seeking or power seeking circuit
> >>
> >>to
> >>
> >>>>activate the solenoid.
> >>>>I know a lead comes from the powertrain control module to the a/c
> >>
> >>compressor
> >>
> >>>>clutch relay, but don't have a diagram or schematic to follow.
> >>>>Is there a way to test the powertrain control module.
> >>>
> >>>Should be the same as my 93ZJ
> >>>http://revbeergoggles.com/temp/zj-59.jpg
> >>>
> >>>Pull the relay. If the clutch is still engaged then
> >>>it's dead. The clutch can be replaced without having to
> >>>disconnect the compressor.
> >>>
> >>>--
> >>>DougW
> >>>
> >>>
> >>
> >>
> >
> >
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/

JEEPR

Initially it was but it is also doing it in the off selection, why?

--

Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:chTfe.14636$tQ.8380@fed1read06...
> The case provides a continuous ground, the relay provides a switched +12
> volts to energize the solenoid. Is your HVAC control on defrost by any
> chance?
>
> JEEPR wrote:
> > substituting relays does not rectify it
> > two wire connector at compressor
> > need to know if its a case ground on the solenoid
> >
> >
> > 0|||||||0
> > Tact is the ability to describe others as they see themselves
> > "JEEPR" <YJJPS@nospam@yahoo.ca> wrote in message
> > news:tCSfe.18608$B82.432652@news20.bellglobal.com. ..
> >
> >>When I pull the relay the solenoid de-energizes.
> >>I'm thinking there is a short somewhere or chaffed wire, supplying maybe
a
> >>ground for the solenoid to energize.
> >>
> >>
> >> 0|||||||0
> >>Tact is the ability to describe others as they see themselves
> >>
> >>
> >>"DougW" <post.replies@invalid.address> wrote in message
> >>news:JhRfe.8127$Ri4.4760@okepread07...
> >>
> >>>JEEPR did pass the time by typing:
> >>>
> >>>>Have an 98 Grand Cherokee
> >>>>The a/c clutch solenoid is staying engaged and running down my
> >
> > battery.
> >
> >>>>Does any one know if this is a ground seeking or power seeking circuit
> >>
> >>to
> >>
> >>>>activate the solenoid.
> >>>>I know a lead comes from the powertrain control module to the a/c
> >>
> >>compressor
> >>
> >>>>clutch relay, but don't have a diagram or schematic to follow.
> >>>>Is there a way to test the powertrain control module.
> >>>
> >>>Should be the same as my 93ZJ
> >>>http://revbeergoggles.com/temp/zj-59.jpg
> >>>
> >>>Pull the relay. If the clutch is still engaged then
> >>>it's dead. The clutch can be replaced without having to
> >>>disconnect the compressor.
> >>>
> >>>--
> >>>DougW
> >>>
> >>>
> >>
> >>
> >
> >
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/

JEEPR

Initially it was but it is also doing it in the off selection, why?

--

Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:chTfe.14636$tQ.8380@fed1read06...
> The case provides a continuous ground, the relay provides a switched +12
> volts to energize the solenoid. Is your HVAC control on defrost by any
> chance?
>
> JEEPR wrote:
> > substituting relays does not rectify it
> > two wire connector at compressor
> > need to know if its a case ground on the solenoid
> >
> >
> > 0|||||||0
> > Tact is the ability to describe others as they see themselves
> > "JEEPR" <YJJPS@nospam@yahoo.ca> wrote in message
> > news:tCSfe.18608$B82.432652@news20.bellglobal.com. ..
> >
> >>When I pull the relay the solenoid de-energizes.
> >>I'm thinking there is a short somewhere or chaffed wire, supplying maybe
a
> >>ground for the solenoid to energize.
> >>
> >>
> >> 0|||||||0
> >>Tact is the ability to describe others as they see themselves
> >>
> >>
> >>"DougW" <post.replies@invalid.address> wrote in message
> >>news:JhRfe.8127$Ri4.4760@okepread07...
> >>
> >>>JEEPR did pass the time by typing:
> >>>
> >>>>Have an 98 Grand Cherokee
> >>>>The a/c clutch solenoid is staying engaged and running down my
> >
> > battery.
> >
> >>>>Does any one know if this is a ground seeking or power seeking circuit
> >>
> >>to
> >>
> >>>>activate the solenoid.
> >>>>I know a lead comes from the powertrain control module to the a/c
> >>
> >>compressor
> >>
> >>>>clutch relay, but don't have a diagram or schematic to follow.
> >>>>Is there a way to test the powertrain control module.
> >>>
> >>>Should be the same as my 93ZJ
> >>>http://revbeergoggles.com/temp/zj-59.jpg
> >>>
> >>>Pull the relay. If the clutch is still engaged then
> >>>it's dead. The clutch can be replaced without having to
> >>>disconnect the compressor.
> >>>
> >>>--
> >>>DougW
> >>>
> >>>
> >>
> >>
> >
> >
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/

Jerry Bransford

No idea, sorry. It'd take some troubleshooting with a VOM and the
schematic, that is for sure.

JEEPR wrote:
> Initially it was but it is also doing it in the off selection, why?
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

Jerry Bransford

No idea, sorry. It'd take some troubleshooting with a VOM and the
schematic, that is for sure.

JEEPR wrote:
> Initially it was but it is also doing it in the off selection, why?
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

Jerry Bransford

No idea, sorry. It'd take some troubleshooting with a VOM and the
schematic, that is for sure.

JEEPR wrote:
> Initially it was but it is also doing it in the off selection, why?
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

Jerry Bransford

No idea, sorry. It'd take some troubleshooting with a VOM and the
schematic, that is for sure.

JEEPR wrote:
> Initially it was but it is also doing it in the off selection, why?
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

Robb S via CarKB.com

I'm only guessing here, but maybe try pulling the wires off of your ac-
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.

--
Message posted via http://www.carkb.com