I just noticed i can open the switches as there are screws there. I'll have to do some testing first. will update soon.

Just to confirm, does the compressor only turn on only if there is request from the switches inside the cabin? Can a faulty ecu cause the compressor to run?

The A/C panel

According to my friend car which is the same model as mine, the high pressure socket shows no voltage reading when a/c and blower is off, and shows 12V only when a/c and blower is on. Unfortunately, my car is not very well documented regarding its a/c and wiring so its hard to diagnose it by myself...

Hi John, Thanks for the reply. Im the first owner, it's a local market Malaysian made car, Proton Exora and i dont think Mitchell have the wiring schematics to this car. It's impossible to find info regarding this specific car wiring because in my country everyone is not good with tools so they dont...

This diagram

Hi, I checked the voltage on the lead of the high pressure switch socket, and it reads 12V on the lead, even with the a/c button and blower off. This causes the compressor to engage all the time and only disengage when the pressure switch sensor trips (which takes a very long time) and im afraid thi...