2001 Xantia - Where is the Climate Control Computer

johnkendall · Post by **johnkendall** » 18 Mar 2007, 13:16

Hi all,

I'm trying to solve the issues with my internal blowers and Air con. Can anyone help me locate the Climate Control Computer and the Fan Speen controler?

Thanks

John

Clogzz · Post by **Clogzz** » 18 Mar 2007, 15:34

With a bit of luck, it’s inside the cover above the passenger floor, towards the centre of the dash.
The air conditioning forum has a good few topics on the subject:

http://www.frenchcarforum.co.uk/forum/v ... m.php?f=12

This link has a clickable hand-drawn map:

http://www.peugeotlogic.com/workshop/ws ... /ac405.htm

johnkendall · Post by **johnkendall** » 19 Mar 2007, 13:03

Hiya,

Well we've got a bit further in our investigation. I know the problem is not the ignition switch

I'm now trying to track down the physical location of the Heater Blower Relay (Labelled K28 on the Autodata circuit diagram)

This is fed from F5 (which is OK) and switches the power the the blower motor.

Thanks
John

Clogzz · Post by **Clogzz** » 19 Mar 2007, 13:26

Item 10 of the relays below the under-dash fuse board:

http://www.citroen-pr.net/catalogues/il ... 141700.gif

johnkendall · Post by **johnkendall** » 19 Mar 2007, 17:25

Cool, thanks, found the relay now and it seems to be OK.

We've got no input voltage on pin 1 of the Air-con switch, but F12 is intact, and if we bridge pin 3 to 5 on the relay, we get no input voltage on the fan motor. (wire 43), the fuses are getting 12v at the fusebox.

Any ideas what we're missing?

Thanks

John

Clogzz · Post by **Clogzz** » 20 Mar 2007, 12:37

According to the map, I understand fuses F12 and F20 to be fed only with the ignition key set to the ignition position.
That’s what I translate “+ Après contact” to mean … “positive after contact”.
This map looks like it’s for the early, unmodified Mk I without relay for the fan motor.
It shows fuse F20 supplied from the ignition switch, without relay.
We’ll have to look for a map for the 2001 model, where even the fuse allocation is different.

Until then the simplest is to look for why bridging the relay pins 3 & 5 does nothing.
Most likely is that on your model the fan current comes through another fuse.
Since the relay switches the fan current after the fuse, the fan fuse will be supplied all the time, and any green 30 Amp fuse may be blown.

Edit 1:30 PM GMT: Found Peugeot map saying fuse 29 under bonnet:

http://www.peugeotlogic.com/fuses/fuses406/fuses9.htm

BonceChops · Post by **BonceChops** » 21 Mar 2007, 12:47

The climate control unit is up behind the centre part of the console. You can just see/feel it if you look from under the passenger side dash . It is a black plastic box about 100mm by 50mm and about 15mm thick if I remember correctly. It has a wiring connector on the bottom end of it.