Climate control wiring Options

[zonz540]

Idk if this will help, but i uploaded a copy of Toyotas repair manual for the ST205 interior.

http://www.filefactory.com/file/ah152df/n/...ssis_Manual_pdf

Best of luck, ill be doing this with my manual CC as soon as you post a how to.

[BloodyStupidDave...]

wow so you have 2 sets of wires coming out the back of your control panel? why would you need 2 and is there any difference between mine and yours?

I think you have air conditioning. The temperature dial is mechanical, moving a mixer control in the engine bay. The JDM cars had full climate control where you set the electronic dial to a specific temperature (say 22c). The system then automatically moves the mixer control back and forwards to maintain the temperature you specified. The second loom carries all the signals to do that plus signals for the extra temperature sensors needed to make the system reliable.

also anyone know what that box label 'KV' is?

That's your Engine ECU.

[BloodyStupidDave...]

remove the pressure switch plug and connect the two terminals together yellow/red+ purple white does that do the trick?

Yes, that causes the compressor to start running, the IAC to move and the revs to increase. I haven't actually left it running long enough to confirm whether it is actually blowing cooled air or not.

Does that mean that my pressure switch has failed?

Regarding the pink/blue wire:

The pink/blue from the A/C amp goes to the black plug at the bottom of the centre console. The pink/green from the A/C amp also goes to the black plug (adjacent pins). From the black plug the colours change. The wires go to the heater mixer actuator by the driver's left foot (for RHD cars; passenger's left foot on LHD cars).

Have you fitted the actuator and its wiring? It is different to UK wiring.



This post has been edited by BloodyStupidDavey: Aug 16, 2009 - 12:05 PM

[Cavegod]

cheers rusty but by the looks of your climate control it is the wrong type as mine has 2 wiring plugs on the back of it, hence why you could find the wires.

wow so you have 2 sets of wires coming out the back of your control panel? why would you need 2 and is there any difference between mine and yours?

yep i have fitted the entire system minus the blower box, i will take pictures now and post them up.

Rusty the facelift jdm cars only have 1 wire plug on the back the system is the same though just ain't worked out how different the wiring is.

[Cavegod]

Ok BSD here you go

here is my jdm compressor with the uk wiring plug and yes i am missing the 4th wire yellow/black it conects to a cylinder on the back of the compressor near the exhaust and then earths.



here is a pic of my throttle position sensor am i missing a wire?



ok inside the car now the big multiblock connector on the top of the evap housing

JDM



UK minus the red/yellow (pressure switch) and blue/yellow (compressor relay earth)



heres both the uk and jdm relay side by side both identical even part no.s



this is the pink/blue wire



it goes to here which i think is one of the three vertical connectors below the radio



as you can see that is where it stops



right that just leaves the multi plug below the evap

this is the climate control side female plug



uk male side



jdm male side



jdm and uk side by side 'jdm plugged in'



so as you can see i have 2 wires not connected the yellow/black (compressor) and the blue/ yellow which is 12v live and according to th ewiring diagram goes to the ecu 'ATS'

so if i connect the yellow/black to the compressor where does the throttle position sensor wire connect to as i only have the 12v blue/yellow not connected?

[Cavegod]

ok so i have connected the yellow/black to the compressor and didn't see any difference to the CC so dunno what it does.

oh and the reason why my pressure switch didn't work properly is because the connector pins on it where not making a good contact.

[BloodyStupidDave...]

Ok BSD here you go

here is my jdm compressor with the uk wiring plug and yes i am missing the 4th wire yellow/black it conects to a cylinder on the back of the compressor near the exhaust and then earths.

Mine is the same:


Here is the coil of wire ready to connect if needs be:

here is a pic of my throttle position sensor am i missing a wire?

No. The blue/white wire turns out to be for cruise control. It goes through the grey connector vertically mounted at the bottom of the centre console, snakes around the driver's side of the dashboard, goes through one of the white connectors on the passengers kick panel and ends up at pin 19 (21 according to the wiring diagram - maybe I miscounted) of the green cruise ecu connector.

ok inside the car now the big multiblock connector on the top of the evap housing

Mine is the same:

heres both the uk and jdm relay side by side both identical even part no.s

The fast acting relay:


The black connector at the bottom of the centre console:



The other side of it:



For completeness, the white connector next to it:




The grey connector joining the engine bay loom to the cabin loom - vertically mounted at the bottom of the centre console:


The other side of it:

right that just leaves the multi plug below the evap

I call this the black or white plug between the blower and the heater

this is the climate control side female plug

Mine is the same:

jdm male side

Mine is the same - yellow/black and blue/yellow not connected:

so as you can see i have 2 wires not connected the yellow/black (compressor) and the blue/ yellow which is 12v live and according to the wiring diagram goes to the ecu 'ATS'

so if i connect the yellow/black to the compressor where does the throttle position sensor wire connect to as i only have the 12v blue/yellow not connected?

I think you can forget about the throttle wire until you come to do the cruise control.


This post has been edited by BloodyStupidDavey: Aug 16, 2009 - 12:02 PM

[Cavegod]

you have 2 dead picture links,

where does the blue/ white throttle wire go to?

[Cavegod]

yep just checked my pink blue wire is the same but i have that pink blue splice for some reason.

[Cavegod]

ahh fast acting relay you me the power transistor, round thing on the evap housing?

i have located the ecu pin for the blue/yellow ats wire!

[Cavegod]

ok so the blue/yellow wire for the ecu goes here

4th ecu plug



this pin out right below the green/yellow



it earths about 3-4V's

i have connected it up and car still runs dunno what it does but its connected so i now have every wire connected although the system will work with a few missing lol

[BloodyStupidDave...]

i have located the ecu pin for the blue/yellow ats wire!

Awesome! So to recap:

* We know where the blue/yellow wire goes
* We think the yellow/black wire from black multi-plug below the evap / between blower and heater is for the MGV function of the compressor
* The blue/white throttle wire is a red herring. It is needed for cruise control but not climate control.
* On both your car and on my car it seems necessary to short out the pins on the pressure sensor to get the compressor to work.

Unanswered questions:
* Does the last point mean that on both our cars, the pressure sensor has failed?

Other observations:
* The wiring of your grey vertically mounted multi-plug is quite different to mine.

New questions:
* What are the colours and locations of the two wires that run to your outside temperature sensor?


This post has been edited by BloodyStupidDavey: Aug 16, 2009 - 12:15 PM

[Cavegod]

Right well i thought i would wright a how to so here goes

you will need.

JDM parts

A/C fan

A/C compressor



smooth pulley for 3gse

http://img.photobucket.com/albums/v79/cavegod/Photo-0051.jpg

longer drive belt

A/C pipe work



A/C radiator

3 relays

heater duct assembly

evapourater housing

temp mixer cable



ambient temp sensor

cabin temp sensor



solar sensor middle one



Climate control unit



CC wiring



you will need the wiring on the evap and heater duct assemblies





if your car has Air conditioning you will need to swap a few things but for this mod take it as having no air con at all, the celica gen6 should have the wiring in place for normal aircon system so to make sure check for a few things

behind glove box should be a large multiplug above the blower duct and a multiplug below blower ducting both will be taped to the wiring loom in the respective places. in the engine bay you should check for a grey connector taped up near the diagnostic port and one taped to the wires on the radiator pipe from the thermostat, and last but not least a plug taped up near the left hand relay box.

once you have made sure you have them away we go!

remove the dash board



with the dash board out of the way remove the metal tubular frame as well, then you can get to work.

remove the following

in engine bay disconect the heater hoses and mixer cable

in the car remove the blower ducting and the heater duct assembly

with those out the way you can start the install

fit the JDM heater duct assembly thread the mixer cable through to the engine bay and heater hoses, then bolt it in and connect th ecable and hoses to their respective places.

next remove the blanking panel from the bulk head and then bolt the evap housing in place. in th eengine bay fit the JDM plate over where the Evap pipe work enters the engine bay.



then fit all the engine bay A/C parts just a matter of bolting them in place, compressor torque is 25nm and all A/C pipes are 10nm. fit the A/C fan to the radiator using the three bolts and then plug it in as well as plugging in the compressor and the pressure switch. thats the engine bay done. next up is wiring the beast in!

onc you plug all the multiplugs in you will be left with a few wires that need connecting.

the following wires just need removing from the CC multiplugs and then the relevant wire from the old system pushing in.

CC unit orange multiplug

GREEN - lights
GREEN/WHITE - lights

Middle white plug

BLUE/WHITE - heater relay



large plug at top of evap

BLUE/YELLOW - compressor relay
RED/YELLOW - pressure switch



the next set of wires need connecting to the following

GREY - ACC
GREEN/RED - Batt+
WHITE/BLACK - earths

multiplug below the evap



you will notice 2 wires missing from this plug we need to add them so you will need to remove the wires from the JDM plug YELLOW/BLACK & BLUE/YELLOW



clip them in the correct place on the cars plug and then connect

YELLOW/BLACK - compressor
BLUE/YELLOW pin16 of the 4th ecu plug directly below th egreen/yellow wire.

that should be all the wires connected but you will need swap a few wires over for the blower motor depending on how you have done it.



run 2 wires to the ambient sensor on the A/C rad and connect to the ambient sensor wires on the CC.

[Rusty]

I think you have air conditioning. The temperature dial is mechanical, moving a mixer control in the engine bay. The JDM cars had full climate control where you set the electronic dial to a specific temperature (say 22c). The system then automatically moves the mixer control back and forwards to maintain the temperature you specified. The second loom carries all the signals to do that plus signals for the extra temperature sensors needed to make the system reliable.

lol I have CC thats why I was trying to help cavegod.


hmm you might be right about facelift JDM wiring...

[99gt3sge]

which wire controls the idle when the a/c is engaged? i think thats the wire im missing when i did my 3sge swap on 6th gen,

[delusionz]

im pretty sure i have 2 plugs on the back of my climate control too???

hey while you're in there, i'm doing the exact opposite. you're putting in , im taking out.

what kinda AC-only related doo-dahs have you come across so far that i can bin??