A/C CLUTCH SOLENOID
#71
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Just so we all understand the solenoid is being energized even when the
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
#72
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Just so we all understand the solenoid is being energized even when the
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
#73
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Just so we all understand the solenoid is being energized even when the
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
ignition is off. That is the cause of the run down battery.
--
Matt
0|||||||0
Tact is the ability to describe others as they see themselves
"DougW" <post.replies@invalid.address> wrote in message
news:HjVfe.8152$Ri4.4614@okepread07...
> JEEPR did pass the time by typing:
> > That's what I kind of thought, would that be close to the powertrain
control
> > module that I had indicated in original post as it is a 98 grand
cherokee
> > 4.0L
>
> ECU == PCM
> Different name for the same thing.
>
> Should be on the firewall behind the coolant overflow bottle
> on the passenger side. Least that's where it is in the 93ZJ
>
> --
> DougW
>
>
#74
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
OK done some reverse engineering
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
#75
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
OK done some reverse engineering
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
#76
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
OK done some reverse engineering
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
#77
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
OK done some reverse engineering
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
the coil of the relay has a switched controlled ground and a 12v power
supply controlled through ignition sw I guessing as the 12v is not constant
the common contact on the relay has a constant 12v.
for the clutch solenoid to energize with ignition off, a ground would have
to be supplied to the relay and also a power source to energize the relay.
So theoretically if the ignition switch was not shutting off all the way
when key is extracted and the control was left on defrost this would cause
the problem as I had described. Not sure were the low pressure sw. plays in
this theory though, is it ignition controlled?
But I recall the solenoid engaging with the heater in off selection I'm
pretty sure.
If the PCM was having a melt down you think I would notice more symptoms on
other systems.
Ok I think I just talked myself out of understanding what the hell is going
on.
x1=12v sw
x2= gnd sw
C= common 12v constant
nc= normally closed to common
no= normally open or closed to common when relay is energized
| or __ = contacts
-- | x2 | nc | x1
__no
__C
#78
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Your use of the word common confuses me, as it is the term we use
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C
#79
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Your use of the word common confuses me, as it is the term we use
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C
#80
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
Your use of the word common confuses me, as it is the term we use
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C
for the white wire in out homes which is grounded, just like the bare
copper wire is.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JEEPR wrote:
>
> OK done some reverse engineering
> the coil of the relay has a switched controlled ground and a 12v power
> supply controlled through ignition sw I guessing as the 12v is not constant
> the common contact on the relay has a constant 12v.
> for the clutch solenoid to energize with ignition off, a ground would have
> to be supplied to the relay and also a power source to energize the relay.
> So theoretically if the ignition switch was not shutting off all the way
> when key is extracted and the control was left on defrost this would cause
> the problem as I had described. Not sure were the low pressure sw. plays in
> this theory though, is it ignition controlled?
> But I recall the solenoid engaging with the heater in off selection I'm
> pretty sure.
> If the PCM was having a melt down you think I would notice more symptoms on
> other systems.
> Ok I think I just talked myself out of understanding what the hell is going
> on.
>
> x1=12v sw
> x2= gnd sw
> C= common 12v constant
> nc= normally closed to common
> no= normally open or closed to common when relay is energized
> | or __ = contacts
>
> -- | x2 | nc | x1
>
> __no
>
> __C