I've got a 2004 S60 2.5T with an ECU flash from IPD.. I am not getting 12 volts to the aircond pump.. I stole the relays from my wife's XC90, no luck, does any one have any ideas. thanks in advance.. Pete

 

You dont have any power there? Did you happen to check fuses?

 

No power. I checked all the fused with a multi-meter. swiped all the relays from my wife's XC-90.. once I jump power to the pump with a wire from a positive power source, with the car running, the pump will kick on,. I'm just trying to find where the power source to the pump come from then I can chase it backwards.

 

Climate module maybe?

 

where is that located, also it was suggested a low pressure switch, got any idea where one of those might be located.. I checked all the hoses under the hood and under the car and can not find anything that resebles a pressure switch.
Pete

 

Climate control module is the actual climate unit, were all the controls are. For some wierd reason, im thinking that the ecm is what turns the a/c on. Did you contact ipd and let them know? It maybe a software defect

 

Im going to call them tomorrow.. I was reading on VADIS.. looks like the ECM.. it controls the radiator fans and the compressor pump. Radiator fans run as soon as the car starts, even when cold, and does not shut off until I turn off the key,. Compressor pump is not getting 12 volts..

 

UPDATE !!! I spoke with Ken at IPd.. he said that he heard of this about 10 years ago. I had sent my ECU to IPd about 3 weeks ago for flashing,, well when some dumbass,, Me,, reinstalled the ECU, I bent a pin, guess which pin it was,, the one for the A/C and cooling fans.. thanks for all your inputs anyways,.