pauls1980 Posted June 5, 2007 Report Share Posted June 5, 2007 Hi guys I currently own a mk4 4 Golf GT TDI 110, ( whatever happened to my R32 days?? ) I bought this car earlier on this year and now that it is getting warm I have noticed that my air conditioning does not seem to be working. I have taken my car to the local air con. specialists who have told me that it has an electrical fault which is stopping the car from powering up the compressor when the air con. is switched on ( the fans are fine). Today they hooked the car up to the laptop and they spent a while on the car only to find that they could not get the ECU to communicate with their laptop. The gentleman at the air con. place tells me that he has had this problem once before but this was with a Mercedes. So all I am asking here is, does anybody know why the ECU in my car will not communicate with the computer from the air con. place? As this is not working then the guys there can only go through and change each switch etc. until the problem may or may not be sorted, BUT this will cost me an arm and a leg so I do not wish to go down this road, (it is also not guaranteed that this will work). Any help or advice much appreciated. Link to comment Share on other sites More sharing options...
Tobes49 Posted June 5, 2007 Report Share Posted June 5, 2007 First question: Have you air-con or Climate control? Second question: Have you checked the 3 fuses on top of the battery? Link to comment Share on other sites More sharing options...
pauls1980 Posted June 5, 2007 Author Report Share Posted June 5, 2007 Answer to first question - I have Air-con not climate control Second question - I have just checked the 3 fuses, they are all in one piece however, one of them has a brown colour on one side of it, corrosion perhaps? Shall I put a new one in? PLEASE SEE ATTACHMENT Link to comment Share on other sites More sharing options...
steve2 Posted June 5, 2007 Report Share Posted June 5, 2007 looks like it has been arcing, try a new one Link to comment Share on other sites More sharing options...
Tobes49 Posted June 5, 2007 Report Share Posted June 5, 2007 [ QUOTE ] Answer to first question - I have Air-con not climate control Second question - I have just checked the 3 fuses, they are all in one piece however, one of them has a brown colour on one side of it, corrosion perhaps? Shall I put a new one in? PLEASE SEE ATTACHMENT [/ QUOTE ] Just Air-con has NO diagnostics, So you can spend all day with a laptop and you wont get anywhere. Bet the fuse is the one nearest the passenger side of the car? This fuse provides the power feed for the air-con clutch, You might need a new fuseholder as these melt away. I'll pop my invoice in the post for the arm and the leg, LOL Hope you get it sorted Link to comment Share on other sites More sharing options...
pauls1980 Posted June 6, 2007 Author Report Share Posted June 6, 2007 Hey I changed the 3 fuses on top of the battery today ( they came in packs of three ) There still does not appear to be any air conditioning, maybe I should invest in a new fuse holder now? ty Link to comment Share on other sites More sharing options...
Tobes49 Posted June 7, 2007 Report Share Posted June 7, 2007 If you look at the fuse holder you can see the 3 wires coming out the back for the 3 fuses, Just probe the wires and make sure you have 12v in each one. Link to comment Share on other sites More sharing options...
pauls1980 Posted September 15, 2007 Author Report Share Posted September 15, 2007 I probed the 3 wires this morning (finally! ;-)) Tobes you may not be surprised to read this but, there was no voltage whatsoever. What shall I do now? ty Link to comment Share on other sites More sharing options...
Rustynuts Posted September 15, 2007 Report Share Posted September 15, 2007 Check you have 12v on the other side of the fuses first. No power in means definately no power out. Check you had the ignition switched on etc. cause that might be a silly mistake. Don't know for certain. Link to comment Share on other sites More sharing options...
Tobes49 Posted September 18, 2007 Report Share Posted September 18, 2007 The fuses on the battery are all terminal 30 (Permant power) Sound like the fuse holder has given up, You should have power out of the. Start the engine switch the A/C on and try wiggling the fuses around if the fans cut in and the A/C starts it defiantly the fuse holder. Thats weird because I've done 2 fuse holders in the last 2 days! Link to comment Share on other sites More sharing options...
khutula Posted September 26, 2007 Report Share Posted September 26, 2007 My climate control is like this too. Car won't get icy cold. Air con specialist traced the fault to the ECU not sending out a signal to the climatronic to fire up. Want to get a chip made to make the ECU send out signal. I think this is nonsense as does everybody I have spoken to about it Awesome-GTI, APS and VW. My fuse on the top of the battery is slightly melted, but I had it looked at by APS the other day (whilst I was having some other work done) and they said it not that. How are you testing the power out of the fuse holder - with a multimeter or something? I don't have one that will measure the exact voltage - only one that will check whether its live or not. I guess that will do for starters. Does anybody have any other ideas why it might not be icy cold. It has been regassed, and cleaned out. It will get hot, and does go colder, just not icy cold. My fans are OK too. Any help would be appreciated Link to comment Share on other sites More sharing options...
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