Why does my a / C CLUTCH not engage?
Why does my a / C CLUTCH not engage? A/C clutch will not engage. I narrowed it down to the red/blue wire on the compressor relay. The relay is good. My There is a way to pinpoint it. Is the a / C clutch in the ECU? If the ECU is seeing the signal from the A/C switch and commanding the fans on it should also be comanding the compressor on. Thats the Red/Blue wire. since that all checks good the open has to be in the ECU. Ok, what about this A/C diode? How to manually engage AC compressor...