Polo 9n Air con Problems

**willowraf** · 08-06-2009,07:20 PM

Well i have a 1.9tdi Polo 9n with no aircon working.. Its been re-gassed with no leaks and no problems that side.. only found that at the connector to the aircon unit that the voltage is 10.4v all the time wether aircon is on or off.. Any ideas anybody..

regards

Willowraf
mk1 golf cab 1.8t
polo 1.9tdi stage 2

**kenney** · 08-06-2009,07:49 PM

Check the fuses on the fuse holder on the battery,these have a tendency to corrode

**willowraf** · 08-06-2009,08:02 PM

Originally Posted by kenney

Check the fuses on the fuse holder on the battery,these have a tendency to corrode

Good call... the corrission would of caused the volt drop.. but just checked and in this case no corrosion. Also it has 10 volts with both A/C selected or deselected???????

cheers though it was somthing i had not check before having to change the controller...non climate controller that is..

cheers

**willowraf** · 10-06-2009,01:58 PM

Any other ideas on this one?? Should the air con always have a live feed?? Does it have any relays in the system which maybe hard latched on?? Anybody had this fault before??

Regards Tim

**kenney** · 10-06-2009,02:31 PM

Is it climatronic you have?There is no relay,in addition to the fuses i mentioned,check fuse 18 on the fuse board.Can you run a diagnostic check?

**willowraf** · 10-06-2009,07:19 PM

Originally Posted by kenney

Is it climatronic you have?There is no relay,in addition to the fuses i mentioned,check fuse 18 on the fuse board.Can you run a diagnostic check?

No its the standard A/C button type..not the climatronic control....I'll check the fuse now... cheers I thought it was fuse 29..but i'll check it anyways... I'll also do a Vag scan..No error's last month after the Ecu fried.. But it's always worth a look...

**willowraf** · 13-06-2009,04:18 PM

Well i've change the controller which made no changes to the state of the system...boo...Has anybody got and wiring diagrams for this system as it's lost list in the hynes manuals... Also i've ran the system through Vag-com...Not apparent faults... So i'm still get 10.4 volts and A/C source and the pressure is stayiny stable at 100 psi which indicates compressor failing to work...Any other ideas to fix...Or any ways to test the compressor???

Regards Tim
I hate A/C

**kenney** · 13-06-2009,04:24 PM

Need your e-mail address,to send the diagram

**willowraf** · 13-06-2009,04:55 PM

Originally Posted by kenney

Need your e-mail address,to send the diagram

willowraf@ntlworld.com

cheers

**willowraf** · 14-06-2009,08:53 AM

Originally Posted by kenney

Need your e-mail address,to send the diagram

Cheers for the diagrams....Now i can confirm the worst case is that the compressor has failed....boo.. £350 for quick fix no so good...

Thanks again..