JDM Climate control Options

[96ST206]

Is there any way of using a JDM climate control in a USDM car? or do you need the whole JDM harness to go with it? I know some Honda ones can work, but also with a Nissan 240SX the JDM digital ones won't work without the complete harness. I just don't want to spend money on something I can't use.

[njccmd2002]

there is a thread about that. Lots of money, time, parts and headaches...

ah sorry, thought you meant the other way round.

Good luck. I had a brief look behind the aircon units of both of the types and they looked pretty different. Will probably open them up again this weekend and see whats the difference if you have not found your answer by then.

They are very different. To do the swap you'll need:

* an extra engine bay sensor
* replace the temperature sensor inside the aircon heat exchanger (the middle box behind the glove box)
* a different aircon resistor pack
* an aircon power transistor (not fitted for aircon)
* a light sensor (goes into the top of the dashboard)
* a cabin temperature sensor (goes under the steering wheel)
* an air tube that goes between the cabin air sensor and near the drivers' foot rest
* two short aircon wiring looms
* cabin wiring loom from a donor car with climate control
* different aircon amplifier module
* an extra relay (climate control high speed relay)
* an air vent mode solenoid from donor car (they are different)
* a temperature mix solenoid from donor car (solenoid not fitted in aircon)
* temperature mix actuator cable from donor car (they are different)
* climate control (the unit with switches on that goes in the center console
* climate control ECU (not fitted in aircon, sits on top of the main ECU)

You'll need to completely unplug the cabin wiring loom then remove the arm rest, lower centre console, steering wheel, dashboard. You'll then need to combine your old loom with the donor loom, change over the aircon heat exchanger temperature sensor, run wires to the engine bay sensor and install the remaining two cabin sensors. Install all the remaining bits, attach the cabin wiring loom to the dashboard again and put everything back together.

In short, the work involved is probably a little short of an engine swap. It isn't really worth the effort involved unless you like a challenge or really really want climate control.

with regards to those 3 sensors above...do you know where can i find them...and do you have any pictures?

I've given the location in the car for each of them above. You'll need to find a JDM car.

engine bay sensor:
sorry, I don't have a picture of this

light sensor:

^^ middle one in the above image

cabin temperature sensor:

Where exacly is this sensor in engine bay? My friend has JDM celica so I will look but I don't know how it looks....

I don't know. That is the last piece of the puzzle for me. I need to trace the blue/white, yellow and yellow/black wires that go from the cabin into the engine bay. It may be an additional 1-wire or 2-wire sensor or a different existing sensor.

And what about wiring? connectors are different.... and I'm not sure how to work it out...

As I said above, you'll need to find a donor car, get to the wiring looms and unpick them to seperate the individual wires and connectors you need. It is a big job.




Plus these two looms: