Have an issue where my ayc pump is not turning on, I put power to the pump and it works.
I have no power to connector. The fuse is good, the relay is good. I bought this car 2 weeks ago and been having a clanking noise when turning. That’s why I start looking at the ayc. It does have a haltech 1500 elite ecu. Anyone experience this before ?

 

ACD has it's own computer separate to engine...is the most wisdom I can give you if pummp is working and wiring is sorted.