Originally Posted by
moneypit_k5
havent got the alignment issue sorted yet. I did order the proper componants to fit oem A/C to my 300tdi. I had to buy them on your side of the pond, had no luck anywhere else!
After charging the system, I discovered my ac clutch wouldnt come on, but worked great on a jumper wire.
After some extensive digging, I discovered the ground signal entering the ECM was good, but there was no signal exiting the ECM. I simply spliced the in and the out right at the ECM and now the system works great.
As I see it, the presence of the ECM in this circuit is entirely a waste of wire. Why did they wire it this way? all the safety switches are in the circuit before the ECM, so my system now works exactly the same way sans ECM.
Some of the engineering in this truck baffles me.