Re: Seat Ibiza 2002 1.9 TDI

Hi All

I have a problem with the Temp adjust unit on the centre console. If temp is set high or low it will only blow ambient temp air. The blower fan speed is ok and can be adjusted normally. The fresh air/circulating button is not responding but illuminates briefly when the ignition is turned on. The AC button is not responding and will not illuminate when the ignition is turned on.
I have checked the AC fuse with no problems found.
I could not ID any other fuse for this circuit so I have individually removed and checked all fuses in the dash and on the battery cover with no problems found.
I have checked the terminations have being made on the back of the temp controller in the centre console. I have not checked this with a DMM, as I do not have a wiring diagram.

What further checks can be performed to resolve this problem?

Thanks

Pete