A/C Amplifier - how to get access

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Old 19 Aug 2006, 06:16 pm   #1 (permalink)
Pszemol
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Default A/C Amplifier - how to get access

Hi, I would like to check signals coming
to/from the A/C amplifier in my 1995 camry
and I have no idea how to get to it...

I know it is on the passenger side but where?
Under the glove box? Should I remove glove box?
What is the procedure to get acces to the amplifier?
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Old 20 Aug 2006, 08:40 am   #2 (permalink)
m Ransley
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Default Re: A/C Amplifier - how to get access

Whats an AC amplifier, the stereo-its DC. Alternator, or Air
Conditioning. You have several fuse boxes, get a manual.

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Old 20 Aug 2006, 12:03 pm   #3 (permalink)
Pszemol
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Default Re: A/C Amplifier - how to get access

"m Ransley" <ransley@webtv.net> wrote in message news:24317-44E8663F-324@storefull-3136.bay.webtv.net...
> Whats an AC amplifier, the stereo-its DC. Alternator, or Air
> Conditioning. You have several fuse boxes, get a manual.


You are funny... :-) Not DC, not AC, but A/C - Air Condition!
I have a manual, but it does not specify how to get to the amplifier.
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Old 20 Aug 2006, 01:20 pm   #4 (permalink)
johngdole@hotmail.com
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Default Re: A/C Amplifier - how to get access

Try this link, but Guido said the link may not work. The AC amplifier
should be on the blower motor housing (at least in later models),
behind the glove box. Should be some easy screws to remove to get to.

See if clutch is binding or the clutch magnet is bad.


From: Father Guido - view profile
Date: Sat, Aug 19 2006 7:02 pm
Email: Father Guido <PhoneyN...@Phoney.com>
Groups: alt.autos.toyota.camry

~> > http://oregonstate.edu/~tongt/camry/index.html

Hi, I'm not sure who originally posted the above link, but the links
to the files/sections hosted in Germany for the Gen 4 Camry don't work

Any ideas on how to access those files?

Thanks,

Norm

Pszemol wrote:
> "m Ransley" <ransley@webtv.net> wrote in message news:24317-44E8663F-324@storefull-3136.bay.webtv.net...
> > Whats an AC amplifier, the stereo-its DC. Alternator, or Air
> > Conditioning. You have several fuse boxes, get a manual.

>
> You are funny... :-) Not DC, not AC, but A/C - Air Condition!
> I have a manual, but it does not specify how to get to the amplifier.


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Old 20 Aug 2006, 02:01 pm   #5 (permalink)
Pszemol
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Default Re: A/C Amplifier - how to get access

<johngdole@hotmail.com> wrote in message news:1156098057.926888.98330@m79g2000cwm.googlegro ups.com...
> Try this link, but Guido said the link may not work. The AC amplifier
> should be on the blower motor housing (at least in later models),
> behind the glove box. Should be some easy screws to remove to get to.
>
> See if clutch is binding or the clutch magnet is bad.


So does it seems I do not have to remove the glove box ?
The access is from underneath?
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Old 20 Aug 2006, 02:27 pm   #6 (permalink)
johngdole@hotmail.com
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Default Re: A/C Amplifier - how to get access

The blower housing is behind the glove box in the console, so I doubt
there is enough clearance to work without removing the glove box. The
procedure does call for removing the glove box to get to the amplifier.

The signals there can tell you if the clutch is engaged or not, if the
pressure switch is on or off, the resistance of the lock sensor coil,
condenser fan turned on/off. Some control signals aren't described in
the manual. Most of these can be measured without going to the
amplifier, like at the connector near the compressor and at the
pressure switch near the sight glass.

If the evaporator side is working (let's assume it is for now without
doing other tests described by Haynes), the primary suspect is probably
the clutch (wearing out from years of use and not carrying the load) or
a worn out compressor generating a lot of resistance that the clutch
slips and its rpm differs so much from the engine rpm that you get the
AC light blinking.

Of course, if it's going to one of the two, hope it is the clutch
assembly.



Pszemol wrote:
> <johngdole@hotmail.com> wrote in message news:1156098057.926888.98330@m79g2000cwm.googlegro ups.com...
> > Try this link, but Guido said the link may not work. The AC amplifier
> > should be on the blower motor housing (at least in later models),
> > behind the glove box. Should be some easy screws to remove to get to.
> >
> > See if clutch is binding or the clutch magnet is bad.

>
> So does it seems I do not have to remove the glove box ?
> The access is from underneath?


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Old 20 Aug 2006, 04:24 pm   #7 (permalink)
Pszemol
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Default Re: A/C Amplifier - how to get access

<johngdole@hotmail.com> wrote in message news:1156102035.227739.129710@b28g2000cwb.googlegr oups.com...
> The blower housing is behind the glove box in the console, so I doubt
> there is enough clearance to work without removing the glove box. The
> procedure does call for removing the glove box to get to the amplifier.


Where do you find this procedure ?
I have downloaded the manual and they do not say a word about it.
Maybe you have different manual for my 95 camry?

> The signals there can tell you if the clutch is engaged or not, if the
> pressure switch is on or off, the resistance of the lock sensor coil,
> condenser fan turned on/off. Some control signals aren't described in
> the manual.


Which are not described ?
I am surprised, since there is full wiring diagram there and
nothing is missing from what I can tell.

> Most of these can be measured without going to the
> amplifier, like at the connector near the compressor and at the
> pressure switch near the sight glass.


Yes, but I figured out it would be nice to hook up some test lights
in the cabin and drive with the visible indicators for a while to
make sure I have all connected when the a/c shuts off ?

> If the evaporator side is working (let's assume it is for now without
> doing other tests described by Haynes),


Generally everything works... For the most of the time it works fine.
From time to time - once per two days or so, it gets "crazy" and
shuts off itself a lot, then it goes in the period everything is fine
for another couple of days. I have no doubts it will not fix itself :-)
So it can only be worse - one day it might fail totally, and I would
like to be able to diagnose it before this happens.

> the primary suspect is probably
> the clutch (wearing out from years of use and not carrying the load) or
> a worn out compressor generating a lot of resistance that the clutch
> slips and its rpm differs so much from the engine rpm that you get the
> AC light blinking.
>
> Of course, if it's going to one of the two, hope it is the clutch
> assembly.


Either one is something I would probably not do myself.
Even for the clutch replacement they list whole compressor removal first.
But it would be at least good to know what is going on... ;-)
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Old 20 Aug 2006, 05:48 pm   #8 (permalink)
m Ransley
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Default Re: A/C Amplifier - how to get access

Here in the US we plug our guitars into amplifiers, I guess you mean
what we here call an AC condensor coil.

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Old 20 Aug 2006, 08:24 pm   #9 (permalink)
Daniel
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Default Re: A/C Amplifier - how to get access

Pszemol wrote:
>
> Where do you find this procedure ?
> I have downloaded the manual and they do not say a word about it.
> Maybe you have different manual for my 95 camry?

===========
Try this link and see the Air Conditioning section:

http://www.turboninjas.com/camry/

================================
(may also be helpful for Mark to see the difference between an air
conditioning amplifier and a guitar amplifier) ;?)

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Old 20 Aug 2006, 10:30 pm   #10 (permalink)
Pszemol
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Default Re: A/C Amplifier - how to get access

"m Ransley" <ransley@webtv.net> wrote in message news:15996-44E8E6A2-404@storefull-3133.bay.webtv.net...
> Here in the US we plug our guitars into amplifiers, I guess you mean
> what we here call an AC condensor coil.


No, I did not ment A/C condensor coil :-)

Here in USA we call amplifier a piece of electronics which is used
to amplify weak signals from several sensors and prepare them
to be used by the logic to control compressor operation... :-)

And this is the piece of electronics toyota calls "A/C Amplifier" also.

Check this toyota manual: http://www.turboninjas.com/camry/ac.pdf
Pay attention to pages AC-9, AC-10, AC-66... :-)
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