Re: TJ'06 - Removing the A/C clutch relay
 

Lon wrote:
> If you are making short trips, most of the fog comes from running the
> A/C with the defroster--old water. The OP could try just removing
> the electrical contact at the A/C clutch, put a bit of tape on it and
> cover the connector in the A/C. If that works for them, then, yes,
> adding a switch or a relay and a switch would work.
>
> Probably an easier way to do it, but I don't have a wiring diagram for
> that vehicle.

Just for giggles I looked up the circuit for my 93ZJ.
Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.

Few options.
Switch the hot side of the relay by breaking the high/low limit sensor wire
Switch the hot compressor clutch wire
Intercept the PCM signal to the relay


They all have drawbacks. The limit sensors are watched by the ECU,
so it might throw a code, especially with automatic climate control.
Cutting in at the A/C clutch may also set a fault. Guess the easy way
to tell is to pull the connector off the low limit sensor.
(low limit sensor sits on top of the accumulator)

The A/C relay is controlled by the PCM. The line that runs from the
PCM to the relay is a ground line so it can be safely broken.
Place the switch into the ground side of the A/C relay. That way
if it shorts out, nothing bad will happen. But you have to keep it
well away from any 12V source because if the PCM grounds 12v directly
it will fry.

If you ask nicely you can probably get a copy of the schematic from a
dealership. (or at least scribble down the wire colors)
Needless to say it's essential you get the correct wire. :)

When you cut into a line, use insulated terminals for both male and female sides.
(spade or bullet terminals with plastic outer protectors)
http://estore.websitepros.com/117336...600/Detail.bok

Cut the line and put a female on one side and a male on the other.
That way if you ever remove the switch you can simply connect the
wire back together.

And when working by the A/C system remember the condensation and
route your wires away from the moisture.

=====

>> A lot of that steamy windows is from our own hot breath, if you
>> just crack the driver's side window is is usually enough circulation
>> to clear the windshield.
>> God Bless America, Bill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> clay wrote:
>>
>>> Well, the fact is you don't need a/c to defog glass.
>>> Defoggers have been around for almost as long as there's been
>>> glass. The early ones took the form of a forearm sleeve or other
>>> suitable loose bit of clothing.
>>> I still use this method on the rare occasion I get fog in my A/C
>>> less Cherokee.
>>> Works way faster than blowing warm humid air (what comes out of the
>>> defroster without ac) on the glass...

Re: TJ'06 - Removing the A/C clutch relay
 

Lon wrote:
> If you are making short trips, most of the fog comes from running the
> A/C with the defroster--old water. The OP could try just removing
> the electrical contact at the A/C clutch, put a bit of tape on it and
> cover the connector in the A/C. If that works for them, then, yes,
> adding a switch or a relay and a switch would work.
>
> Probably an easier way to do it, but I don't have a wiring diagram for
> that vehicle.

Just for giggles I looked up the circuit for my 93ZJ.
Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.

Few options.
Switch the hot side of the relay by breaking the high/low limit sensor wire
Switch the hot compressor clutch wire
Intercept the PCM signal to the relay


They all have drawbacks. The limit sensors are watched by the ECU,
so it might throw a code, especially with automatic climate control.
Cutting in at the A/C clutch may also set a fault. Guess the easy way
to tell is to pull the connector off the low limit sensor.
(low limit sensor sits on top of the accumulator)

The A/C relay is controlled by the PCM. The line that runs from the
PCM to the relay is a ground line so it can be safely broken.
Place the switch into the ground side of the A/C relay. That way
if it shorts out, nothing bad will happen. But you have to keep it
well away from any 12V source because if the PCM grounds 12v directly
it will fry.

If you ask nicely you can probably get a copy of the schematic from a
dealership. (or at least scribble down the wire colors)
Needless to say it's essential you get the correct wire. :)

When you cut into a line, use insulated terminals for both male and female sides.
(spade or bullet terminals with plastic outer protectors)
http://estore.websitepros.com/117336...600/Detail.bok

Cut the line and put a female on one side and a male on the other.
That way if you ever remove the switch you can simply connect the
wire back together.

And when working by the A/C system remember the condensation and
route your wires away from the moisture.

=====

>> A lot of that steamy windows is from our own hot breath, if you
>> just crack the driver's side window is is usually enough circulation
>> to clear the windshield.
>> God Bless America, Bill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> clay wrote:
>>
>>> Well, the fact is you don't need a/c to defog glass.
>>> Defoggers have been around for almost as long as there's been
>>> glass. The early ones took the form of a forearm sleeve or other
>>> suitable loose bit of clothing.
>>> I still use this method on the rare occasion I get fog in my A/C
>>> less Cherokee.
>>> Works way faster than blowing warm humid air (what comes out of the
>>> defroster without ac) on the glass...

Re: TJ'06 - Removing the A/C clutch relay
 

Lon wrote:
> If you are making short trips, most of the fog comes from running the
> A/C with the defroster--old water. The OP could try just removing
> the electrical contact at the A/C clutch, put a bit of tape on it and
> cover the connector in the A/C. If that works for them, then, yes,
> adding a switch or a relay and a switch would work.
>
> Probably an easier way to do it, but I don't have a wiring diagram for
> that vehicle.

Just for giggles I looked up the circuit for my 93ZJ.
Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.

Few options.
Switch the hot side of the relay by breaking the high/low limit sensor wire
Switch the hot compressor clutch wire
Intercept the PCM signal to the relay


They all have drawbacks. The limit sensors are watched by the ECU,
so it might throw a code, especially with automatic climate control.
Cutting in at the A/C clutch may also set a fault. Guess the easy way
to tell is to pull the connector off the low limit sensor.
(low limit sensor sits on top of the accumulator)

The A/C relay is controlled by the PCM. The line that runs from the
PCM to the relay is a ground line so it can be safely broken.
Place the switch into the ground side of the A/C relay. That way
if it shorts out, nothing bad will happen. But you have to keep it
well away from any 12V source because if the PCM grounds 12v directly
it will fry.

If you ask nicely you can probably get a copy of the schematic from a
dealership. (or at least scribble down the wire colors)
Needless to say it's essential you get the correct wire. :)

When you cut into a line, use insulated terminals for both male and female sides.
(spade or bullet terminals with plastic outer protectors)
http://estore.websitepros.com/117336...600/Detail.bok

Cut the line and put a female on one side and a male on the other.
That way if you ever remove the switch you can simply connect the
wire back together.

And when working by the A/C system remember the condensation and
route your wires away from the moisture.

=====

>> A lot of that steamy windows is from our own hot breath, if you
>> just crack the driver's side window is is usually enough circulation
>> to clear the windshield.
>> God Bless America, Bill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> clay wrote:
>>
>>> Well, the fact is you don't need a/c to defog glass.
>>> Defoggers have been around for almost as long as there's been
>>> glass. The early ones took the form of a forearm sleeve or other
>>> suitable loose bit of clothing.
>>> I still use this method on the rare occasion I get fog in my A/C
>>> less Cherokee.
>>> Works way faster than blowing warm humid air (what comes out of the
>>> defroster without ac) on the glass...

Re: TJ'06 - Removing the A/C clutch relay
 

The '06 TJ doesn't have an automatic climate control system.
Just turns on or off the A/C and you select the hot / cold air mixture. I
am guessing that the A/C system is independent from the ECU, but I am
waiting for the FSM (I ordered one last week) to study the wiring diagram.

I have allready removed the A/C clutch relay for the past few days and I did
not get any Diagnostic Codes or any other complaints from the ECU. The
windshield is defogged just fine (the last 3 days it was continuously
rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
without the AC. If the door windows get fogged, rolling down a door window
1/2" takes care of that too. Plus I can have heat both at the feet and in
the windshield.

I know that using the A/C is a much better way to deffog the windows and
maybe the only way to do it in sever sircumstances. It's just that I'm cheap
and don't want to waste gas when there is no need to.

I am waiting for the FSM to study the wiring and deside where it would be
suitable to connect the A/C cut-off switch.

Thanks,
Bill Spiliotopoulos.

Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
news:NvU1h.25439$Jt3.24247@newsfe16.lga...
> Lon wrote:
>> If you are making short trips, most of the fog comes from running the
>> A/C with the defroster--old water. The OP could try just removing
>> the electrical contact at the A/C clutch, put a bit of tape on it and
>> cover the connector in the A/C. If that works for them, then, yes,
>> adding a switch or a relay and a switch would work.
>>
>> Probably an easier way to do it, but I don't have a wiring diagram for
>> that vehicle.
>
> Just for giggles I looked up the circuit for my 93ZJ.
> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>
> Few options.
> Switch the hot side of the relay by breaking the high/low limit sensor
> wire
> Switch the hot compressor clutch wire
> Intercept the PCM signal to the relay
>
>
> They all have drawbacks. The limit sensors are watched by the ECU,
> so it might throw a code, especially with automatic climate control.
> Cutting in at the A/C clutch may also set a fault. Guess the easy way
> to tell is to pull the connector off the low limit sensor.
> (low limit sensor sits on top of the accumulator)
>
> The A/C relay is controlled by the PCM. The line that runs from the
> PCM to the relay is a ground line so it can be safely broken.
> Place the switch into the ground side of the A/C relay. That way
> if it shorts out, nothing bad will happen. But you have to keep it
> well away from any 12V source because if the PCM grounds 12v directly
> it will fry.
>
> If you ask nicely you can probably get a copy of the schematic from a
> dealership. (or at least scribble down the wire colors)
> Needless to say it's essential you get the correct wire. :)
>
> When you cut into a line, use insulated terminals for both male and female
> sides.
> (spade or bullet terminals with plastic outer protectors)
> http://estore.websitepros.com/117336...600/Detail.bok
>
> Cut the line and put a female on one side and a male on the other.
> That way if you ever remove the switch you can simply connect the
> wire back together.
>
> And when working by the A/C system remember the condensation and
> route your wires away from the moisture.
>
> =====
>
>>> A lot of that steamy windows is from our own hot breath, if you
>>> just crack the driver's side window is is usually enough circulation
>>> to clear the windshield.
>>> God Bless America, Bill O|||||||O
>>> mailto:-------------------- http://www.----------.com/
>>>
>>> clay wrote:
>>>
>>>> Well, the fact is you don't need a/c to defog glass.
>>>> Defoggers have been around for almost as long as there's been
>>>> glass. The early ones took the form of a forearm sleeve or other
>>>> suitable loose bit of clothing.
>>>> I still use this method on the rare occasion I get fog in my A/C
>>>> less Cherokee.
>>>> Works way faster than blowing warm humid air (what comes out of the
>>>> defroster without ac) on the glass...
>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

The '06 TJ doesn't have an automatic climate control system.
Just turns on or off the A/C and you select the hot / cold air mixture. I
am guessing that the A/C system is independent from the ECU, but I am
waiting for the FSM (I ordered one last week) to study the wiring diagram.

I have allready removed the A/C clutch relay for the past few days and I did
not get any Diagnostic Codes or any other complaints from the ECU. The
windshield is defogged just fine (the last 3 days it was continuously
rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
without the AC. If the door windows get fogged, rolling down a door window
1/2" takes care of that too. Plus I can have heat both at the feet and in
the windshield.

I know that using the A/C is a much better way to deffog the windows and
maybe the only way to do it in sever sircumstances. It's just that I'm cheap
and don't want to waste gas when there is no need to.

I am waiting for the FSM to study the wiring and deside where it would be
suitable to connect the A/C cut-off switch.

Thanks,
Bill Spiliotopoulos.

Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
news:NvU1h.25439$Jt3.24247@newsfe16.lga...
> Lon wrote:
>> If you are making short trips, most of the fog comes from running the
>> A/C with the defroster--old water. The OP could try just removing
>> the electrical contact at the A/C clutch, put a bit of tape on it and
>> cover the connector in the A/C. If that works for them, then, yes,
>> adding a switch or a relay and a switch would work.
>>
>> Probably an easier way to do it, but I don't have a wiring diagram for
>> that vehicle.
>
> Just for giggles I looked up the circuit for my 93ZJ.
> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>
> Few options.
> Switch the hot side of the relay by breaking the high/low limit sensor
> wire
> Switch the hot compressor clutch wire
> Intercept the PCM signal to the relay
>
>
> They all have drawbacks. The limit sensors are watched by the ECU,
> so it might throw a code, especially with automatic climate control.
> Cutting in at the A/C clutch may also set a fault. Guess the easy way
> to tell is to pull the connector off the low limit sensor.
> (low limit sensor sits on top of the accumulator)
>
> The A/C relay is controlled by the PCM. The line that runs from the
> PCM to the relay is a ground line so it can be safely broken.
> Place the switch into the ground side of the A/C relay. That way
> if it shorts out, nothing bad will happen. But you have to keep it
> well away from any 12V source because if the PCM grounds 12v directly
> it will fry.
>
> If you ask nicely you can probably get a copy of the schematic from a
> dealership. (or at least scribble down the wire colors)
> Needless to say it's essential you get the correct wire. :)
>
> When you cut into a line, use insulated terminals for both male and female
> sides.
> (spade or bullet terminals with plastic outer protectors)
> http://estore.websitepros.com/117336...600/Detail.bok
>
> Cut the line and put a female on one side and a male on the other.
> That way if you ever remove the switch you can simply connect the
> wire back together.
>
> And when working by the A/C system remember the condensation and
> route your wires away from the moisture.
>
> =====
>
>>> A lot of that steamy windows is from our own hot breath, if you
>>> just crack the driver's side window is is usually enough circulation
>>> to clear the windshield.
>>> God Bless America, Bill O|||||||O
>>> mailto:-------------------- http://www.----------.com/
>>>
>>> clay wrote:
>>>
>>>> Well, the fact is you don't need a/c to defog glass.
>>>> Defoggers have been around for almost as long as there's been
>>>> glass. The early ones took the form of a forearm sleeve or other
>>>> suitable loose bit of clothing.
>>>> I still use this method on the rare occasion I get fog in my A/C
>>>> less Cherokee.
>>>> Works way faster than blowing warm humid air (what comes out of the
>>>> defroster without ac) on the glass...
>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

The '06 TJ doesn't have an automatic climate control system.
Just turns on or off the A/C and you select the hot / cold air mixture. I
am guessing that the A/C system is independent from the ECU, but I am
waiting for the FSM (I ordered one last week) to study the wiring diagram.

I have allready removed the A/C clutch relay for the past few days and I did
not get any Diagnostic Codes or any other complaints from the ECU. The
windshield is defogged just fine (the last 3 days it was continuously
rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
without the AC. If the door windows get fogged, rolling down a door window
1/2" takes care of that too. Plus I can have heat both at the feet and in
the windshield.

I know that using the A/C is a much better way to deffog the windows and
maybe the only way to do it in sever sircumstances. It's just that I'm cheap
and don't want to waste gas when there is no need to.

I am waiting for the FSM to study the wiring and deside where it would be
suitable to connect the A/C cut-off switch.

Thanks,
Bill Spiliotopoulos.

Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
news:NvU1h.25439$Jt3.24247@newsfe16.lga...
> Lon wrote:
>> If you are making short trips, most of the fog comes from running the
>> A/C with the defroster--old water. The OP could try just removing
>> the electrical contact at the A/C clutch, put a bit of tape on it and
>> cover the connector in the A/C. If that works for them, then, yes,
>> adding a switch or a relay and a switch would work.
>>
>> Probably an easier way to do it, but I don't have a wiring diagram for
>> that vehicle.
>
> Just for giggles I looked up the circuit for my 93ZJ.
> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>
> Few options.
> Switch the hot side of the relay by breaking the high/low limit sensor
> wire
> Switch the hot compressor clutch wire
> Intercept the PCM signal to the relay
>
>
> They all have drawbacks. The limit sensors are watched by the ECU,
> so it might throw a code, especially with automatic climate control.
> Cutting in at the A/C clutch may also set a fault. Guess the easy way
> to tell is to pull the connector off the low limit sensor.
> (low limit sensor sits on top of the accumulator)
>
> The A/C relay is controlled by the PCM. The line that runs from the
> PCM to the relay is a ground line so it can be safely broken.
> Place the switch into the ground side of the A/C relay. That way
> if it shorts out, nothing bad will happen. But you have to keep it
> well away from any 12V source because if the PCM grounds 12v directly
> it will fry.
>
> If you ask nicely you can probably get a copy of the schematic from a
> dealership. (or at least scribble down the wire colors)
> Needless to say it's essential you get the correct wire. :)
>
> When you cut into a line, use insulated terminals for both male and female
> sides.
> (spade or bullet terminals with plastic outer protectors)
> http://estore.websitepros.com/117336...600/Detail.bok
>
> Cut the line and put a female on one side and a male on the other.
> That way if you ever remove the switch you can simply connect the
> wire back together.
>
> And when working by the A/C system remember the condensation and
> route your wires away from the moisture.
>
> =====
>
>>> A lot of that steamy windows is from our own hot breath, if you
>>> just crack the driver's side window is is usually enough circulation
>>> to clear the windshield.
>>> God Bless America, Bill O|||||||O
>>> mailto:-------------------- http://www.----------.com/
>>>
>>> clay wrote:
>>>
>>>> Well, the fact is you don't need a/c to defog glass.
>>>> Defoggers have been around for almost as long as there's been
>>>> glass. The early ones took the form of a forearm sleeve or other
>>>> suitable loose bit of clothing.
>>>> I still use this method on the rare occasion I get fog in my A/C
>>>> less Cherokee.
>>>> Works way faster than blowing warm humid air (what comes out of the
>>>> defroster without ac) on the glass...
>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

Why not just pull the fuse? Check the power distribution pack under the
hood, there might be a fuse for the A/C compressor, or the relay itself, why
not remove it and install when needed?

"Bill Spiliotopoulos" <vspili@yahoo.com> wrote in message
news:eib0bd$fp5$1@ulysses.noc.ntua.gr...
> The '06 TJ doesn't have an automatic climate control system.
> Just turns on or off the A/C and you select the hot / cold air mixture. I
> am guessing that the A/C system is independent from the ECU, but I am
> waiting for the FSM (I ordered one last week) to study the wiring diagram.
>
> I have allready removed the A/C clutch relay for the past few days and I
> did not get any Diagnostic Codes or any other complaints from the ECU.
> The windshield is defogged just fine (the last 3 days it was continuously
> rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
> without the AC. If the door windows get fogged, rolling down a door
> window 1/2" takes care of that too. Plus I can have heat both at the feet
> and in the windshield.
>
> I know that using the A/C is a much better way to deffog the windows and
> maybe the only way to do it in sever sircumstances. It's just that I'm
> cheap and don't want to waste gas when there is no need to.
>
> I am waiting for the FSM to study the wiring and deside where it would be
> suitable to connect the A/C cut-off switch.
>
> Thanks,
> Bill Spiliotopoulos.
>
> Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
> news:NvU1h.25439$Jt3.24247@newsfe16.lga...
>> Lon wrote:
>>> If you are making short trips, most of the fog comes from running the
>>> A/C with the defroster--old water. The OP could try just removing
>>> the electrical contact at the A/C clutch, put a bit of tape on it and
>>> cover the connector in the A/C. If that works for them, then, yes,
>>> adding a switch or a relay and a switch would work.
>>>
>>> Probably an easier way to do it, but I don't have a wiring diagram for
>>> that vehicle.
>>
>> Just for giggles I looked up the circuit for my 93ZJ.
>> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>>
>> Few options.
>> Switch the hot side of the relay by breaking the high/low limit sensor
>> wire
>> Switch the hot compressor clutch wire
>> Intercept the PCM signal to the relay
>>
>>
>> They all have drawbacks. The limit sensors are watched by the ECU,
>> so it might throw a code, especially with automatic climate control.
>> Cutting in at the A/C clutch may also set a fault. Guess the easy way
>> to tell is to pull the connector off the low limit sensor.
>> (low limit sensor sits on top of the accumulator)
>>
>> The A/C relay is controlled by the PCM. The line that runs from the
>> PCM to the relay is a ground line so it can be safely broken.
>> Place the switch into the ground side of the A/C relay. That way
>> if it shorts out, nothing bad will happen. But you have to keep it
>> well away from any 12V source because if the PCM grounds 12v directly
>> it will fry.
>>
>> If you ask nicely you can probably get a copy of the schematic from a
>> dealership. (or at least scribble down the wire colors)
>> Needless to say it's essential you get the correct wire. :)
>>
>> When you cut into a line, use insulated terminals for both male and
>> female sides.
>> (spade or bullet terminals with plastic outer protectors)
>> http://estore.websitepros.com/117336...600/Detail.bok
>>
>> Cut the line and put a female on one side and a male on the other.
>> That way if you ever remove the switch you can simply connect the
>> wire back together.
>>
>> And when working by the A/C system remember the condensation and
>> route your wires away from the moisture.
>>
>> =====
>>
>>>> A lot of that steamy windows is from our own hot breath, if you
>>>> just crack the driver's side window is is usually enough circulation
>>>> to clear the windshield.
>>>> God Bless America, Bill O|||||||O
>>>> mailto:-------------------- http://www.----------.com/
>>>>
>>>> clay wrote:
>>>>
>>>>> Well, the fact is you don't need a/c to defog glass.
>>>>> Defoggers have been around for almost as long as there's been
>>>>> glass. The early ones took the form of a forearm sleeve or other
>>>>> suitable loose bit of clothing.
>>>>> I still use this method on the rare occasion I get fog in my A/C
>>>>> less Cherokee.
>>>>> Works way faster than blowing warm humid air (what comes out of the
>>>>> defroster without ac) on the glass...
>>
>>
>>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

Why not just pull the fuse? Check the power distribution pack under the
hood, there might be a fuse for the A/C compressor, or the relay itself, why
not remove it and install when needed?

"Bill Spiliotopoulos" <vspili@yahoo.com> wrote in message
news:eib0bd$fp5$1@ulysses.noc.ntua.gr...
> The '06 TJ doesn't have an automatic climate control system.
> Just turns on or off the A/C and you select the hot / cold air mixture. I
> am guessing that the A/C system is independent from the ECU, but I am
> waiting for the FSM (I ordered one last week) to study the wiring diagram.
>
> I have allready removed the A/C clutch relay for the past few days and I
> did not get any Diagnostic Codes or any other complaints from the ECU.
> The windshield is defogged just fine (the last 3 days it was continuously
> rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
> without the AC. If the door windows get fogged, rolling down a door
> window 1/2" takes care of that too. Plus I can have heat both at the feet
> and in the windshield.
>
> I know that using the A/C is a much better way to deffog the windows and
> maybe the only way to do it in sever sircumstances. It's just that I'm
> cheap and don't want to waste gas when there is no need to.
>
> I am waiting for the FSM to study the wiring and deside where it would be
> suitable to connect the A/C cut-off switch.
>
> Thanks,
> Bill Spiliotopoulos.
>
> Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
> news:NvU1h.25439$Jt3.24247@newsfe16.lga...
>> Lon wrote:
>>> If you are making short trips, most of the fog comes from running the
>>> A/C with the defroster--old water. The OP could try just removing
>>> the electrical contact at the A/C clutch, put a bit of tape on it and
>>> cover the connector in the A/C. If that works for them, then, yes,
>>> adding a switch or a relay and a switch would work.
>>>
>>> Probably an easier way to do it, but I don't have a wiring diagram for
>>> that vehicle.
>>
>> Just for giggles I looked up the circuit for my 93ZJ.
>> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>>
>> Few options.
>> Switch the hot side of the relay by breaking the high/low limit sensor
>> wire
>> Switch the hot compressor clutch wire
>> Intercept the PCM signal to the relay
>>
>>
>> They all have drawbacks. The limit sensors are watched by the ECU,
>> so it might throw a code, especially with automatic climate control.
>> Cutting in at the A/C clutch may also set a fault. Guess the easy way
>> to tell is to pull the connector off the low limit sensor.
>> (low limit sensor sits on top of the accumulator)
>>
>> The A/C relay is controlled by the PCM. The line that runs from the
>> PCM to the relay is a ground line so it can be safely broken.
>> Place the switch into the ground side of the A/C relay. That way
>> if it shorts out, nothing bad will happen. But you have to keep it
>> well away from any 12V source because if the PCM grounds 12v directly
>> it will fry.
>>
>> If you ask nicely you can probably get a copy of the schematic from a
>> dealership. (or at least scribble down the wire colors)
>> Needless to say it's essential you get the correct wire. :)
>>
>> When you cut into a line, use insulated terminals for both male and
>> female sides.
>> (spade or bullet terminals with plastic outer protectors)
>> http://estore.websitepros.com/117336...600/Detail.bok
>>
>> Cut the line and put a female on one side and a male on the other.
>> That way if you ever remove the switch you can simply connect the
>> wire back together.
>>
>> And when working by the A/C system remember the condensation and
>> route your wires away from the moisture.
>>
>> =====
>>
>>>> A lot of that steamy windows is from our own hot breath, if you
>>>> just crack the driver's side window is is usually enough circulation
>>>> to clear the windshield.
>>>> God Bless America, Bill O|||||||O
>>>> mailto:-------------------- http://www.----------.com/
>>>>
>>>> clay wrote:
>>>>
>>>>> Well, the fact is you don't need a/c to defog glass.
>>>>> Defoggers have been around for almost as long as there's been
>>>>> glass. The early ones took the form of a forearm sleeve or other
>>>>> suitable loose bit of clothing.
>>>>> I still use this method on the rare occasion I get fog in my A/C
>>>>> less Cherokee.
>>>>> Works way faster than blowing warm humid air (what comes out of the
>>>>> defroster without ac) on the glass...
>>
>>
>>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

Why not just pull the fuse? Check the power distribution pack under the
hood, there might be a fuse for the A/C compressor, or the relay itself, why
not remove it and install when needed?

"Bill Spiliotopoulos" <vspili@yahoo.com> wrote in message
news:eib0bd$fp5$1@ulysses.noc.ntua.gr...
> The '06 TJ doesn't have an automatic climate control system.
> Just turns on or off the A/C and you select the hot / cold air mixture. I
> am guessing that the A/C system is independent from the ECU, but I am
> waiting for the FSM (I ordered one last week) to study the wiring diagram.
>
> I have allready removed the A/C clutch relay for the past few days and I
> did not get any Diagnostic Codes or any other complaints from the ECU.
> The windshield is defogged just fine (the last 3 days it was continuously
> rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
> without the AC. If the door windows get fogged, rolling down a door
> window 1/2" takes care of that too. Plus I can have heat both at the feet
> and in the windshield.
>
> I know that using the A/C is a much better way to deffog the windows and
> maybe the only way to do it in sever sircumstances. It's just that I'm
> cheap and don't want to waste gas when there is no need to.
>
> I am waiting for the FSM to study the wiring and deside where it would be
> suitable to connect the A/C cut-off switch.
>
> Thanks,
> Bill Spiliotopoulos.
>
> Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
> news:NvU1h.25439$Jt3.24247@newsfe16.lga...
>> Lon wrote:
>>> If you are making short trips, most of the fog comes from running the
>>> A/C with the defroster--old water. The OP could try just removing
>>> the electrical contact at the A/C clutch, put a bit of tape on it and
>>> cover the connector in the A/C. If that works for them, then, yes,
>>> adding a switch or a relay and a switch would work.
>>>
>>> Probably an easier way to do it, but I don't have a wiring diagram for
>>> that vehicle.
>>
>> Just for giggles I looked up the circuit for my 93ZJ.
>> Keep in mind I'm talking about the 93ZJ here. Your jeep may be different.
>>
>> Few options.
>> Switch the hot side of the relay by breaking the high/low limit sensor
>> wire
>> Switch the hot compressor clutch wire
>> Intercept the PCM signal to the relay
>>
>>
>> They all have drawbacks. The limit sensors are watched by the ECU,
>> so it might throw a code, especially with automatic climate control.
>> Cutting in at the A/C clutch may also set a fault. Guess the easy way
>> to tell is to pull the connector off the low limit sensor.
>> (low limit sensor sits on top of the accumulator)
>>
>> The A/C relay is controlled by the PCM. The line that runs from the
>> PCM to the relay is a ground line so it can be safely broken.
>> Place the switch into the ground side of the A/C relay. That way
>> if it shorts out, nothing bad will happen. But you have to keep it
>> well away from any 12V source because if the PCM grounds 12v directly
>> it will fry.
>>
>> If you ask nicely you can probably get a copy of the schematic from a
>> dealership. (or at least scribble down the wire colors)
>> Needless to say it's essential you get the correct wire. :)
>>
>> When you cut into a line, use insulated terminals for both male and
>> female sides.
>> (spade or bullet terminals with plastic outer protectors)
>> http://estore.websitepros.com/117336...600/Detail.bok
>>
>> Cut the line and put a female on one side and a male on the other.
>> That way if you ever remove the switch you can simply connect the
>> wire back together.
>>
>> And when working by the A/C system remember the condensation and
>> route your wires away from the moisture.
>>
>> =====
>>
>>>> A lot of that steamy windows is from our own hot breath, if you
>>>> just crack the driver's side window is is usually enough circulation
>>>> to clear the windshield.
>>>> God Bless America, Bill O|||||||O
>>>> mailto:-------------------- http://www.----------.com/
>>>>
>>>> clay wrote:
>>>>
>>>>> Well, the fact is you don't need a/c to defog glass.
>>>>> Defoggers have been around for almost as long as there's been
>>>>> glass. The early ones took the form of a forearm sleeve or other
>>>>> suitable loose bit of clothing.
>>>>> I still use this method on the rare occasion I get fog in my A/C
>>>>> less Cherokee.
>>>>> Works way faster than blowing warm humid air (what comes out of the
>>>>> defroster without ac) on the glass...
>>
>>
>>
>
>

Re: TJ'06 - Removing the A/C clutch relay
 

Because it is sealed with a sticker, the relay is not (the relay resides in
the power distribution pack too).

Bill Spiliotopoulos.
Ï "Matt Macchiarolo" <matt@nospamplease.com> Ýãñáøå óôï ìÞíõìá
news:v4mdnQoVLv6AltTYnZ2dnUVZ_sednZ2d@comcast.com. ..
> Why not just pull the fuse? Check the power distribution pack under the
> hood, there might be a fuse for the A/C compressor, or the relay itself,
> why not remove it and install when needed?
>
> "Bill Spiliotopoulos" <vspili@yahoo.com> wrote in message
> news:eib0bd$fp5$1@ulysses.noc.ntua.gr...
>> The '06 TJ doesn't have an automatic climate control system.
>> Just turns on or off the A/C and you select the hot / cold air mixture.
>> I am guessing that the A/C system is independent from the ECU, but I am
>> waiting for the FSM (I ordered one last week) to study the wiring
>> diagram.
>>
>> I have allready removed the A/C clutch relay for the past few days and I
>> did not get any Diagnostic Codes or any other complaints from the ECU.
>> The windshield is defogged just fine (the last 3 days it was continuously
>> rainning). It took 10sec to defogg with the A/C engaged, and 30sec now,
>> without the AC. If the door windows get fogged, rolling down a door
>> window 1/2" takes care of that too. Plus I can have heat both at the
>> feet and in the windshield.
>>
>> I know that using the A/C is a much better way to deffog the windows and
>> maybe the only way to do it in sever sircumstances. It's just that I'm
>> cheap and don't want to waste gas when there is no need to.
>>
>> I am waiting for the FSM to study the wiring and deside where it would be
>> suitable to connect the A/C cut-off switch.
>>
>> Thanks,
>> Bill Spiliotopoulos.
>>
>> Ï "DougW" <post.replies@invalid.address> Ýãñáøå óôï ìÞíõìá
>> news:NvU1h.25439$Jt3.24247@newsfe16.lga...
>>> Lon wrote:
>>>> If you are making short trips, most of the fog comes from running the
>>>> A/C with the defroster--old water. The OP could try just removing
>>>> the electrical contact at the A/C clutch, put a bit of tape on it and
>>>> cover the connector in the A/C. If that works for them, then, yes,
>>>> adding a switch or a relay and a switch would work.
>>>>
>>>> Probably an easier way to do it, but I don't have a wiring diagram for
>>>> that vehicle.
>>>
>>> Just for giggles I looked up the circuit for my 93ZJ.
>>> Keep in mind I'm talking about the 93ZJ here. Your jeep may be
>>> different.
>>>
>>> Few options.
>>> Switch the hot side of the relay by breaking the high/low limit sensor
>>> wire
>>> Switch the hot compressor clutch wire
>>> Intercept the PCM signal to the relay
>>>
>>>
>>> They all have drawbacks. The limit sensors are watched by the ECU,
>>> so it might throw a code, especially with automatic climate control.
>>> Cutting in at the A/C clutch may also set a fault. Guess the easy way
>>> to tell is to pull the connector off the low limit sensor.
>>> (low limit sensor sits on top of the accumulator)
>>>
>>> The A/C relay is controlled by the PCM. The line that runs from the
>>> PCM to the relay is a ground line so it can be safely broken.
>>> Place the switch into the ground side of the A/C relay. That way
>>> if it shorts out, nothing bad will happen. But you have to keep it
>>> well away from any 12V source because if the PCM grounds 12v directly
>>> it will fry.
>>>
>>> If you ask nicely you can probably get a copy of the schematic from a
>>> dealership. (or at least scribble down the wire colors)
>>> Needless to say it's essential you get the correct wire. :)
>>>
>>> When you cut into a line, use insulated terminals for both male and
>>> female sides.
>>> (spade or bullet terminals with plastic outer protectors)
>>> http://estore.websitepros.com/117336...600/Detail.bok
>>>
>>> Cut the line and put a female on one side and a male on the other.
>>> That way if you ever remove the switch you can simply connect the
>>> wire back together.
>>>
>>> And when working by the A/C system remember the condensation and
>>> route your wires away from the moisture.
>>>
>>> =====
>>>
>>>>> A lot of that steamy windows is from our own hot breath, if you
>>>>> just crack the driver's side window is is usually enough circulation
>>>>> to clear the windshield.
>>>>> God Bless America, Bill O|||||||O
>>>>> mailto:-------------------- http://www.----------.com/
>>>>>
>>>>> clay wrote:
>>>>>
>>>>>> Well, the fact is you don't need a/c to defog glass.
>>>>>> Defoggers have been around for almost as long as there's been
>>>>>> glass. The early ones took the form of a forearm sleeve or other
>>>>>> suitable loose bit of clothing.
>>>>>> I still use this method on the rare occasion I get fog in my A/C
>>>>>> less Cherokee.
>>>>>> Works way faster than blowing warm humid air (what comes out of the
>>>>>> defroster without ac) on the glass...
>>>
>>>
>>>
>>
>>
>
>