Great diagram, but I cannot follow it. LOL.....Too many relays! Can't figure out why the engine and ac fans both run full speed even with the connector removed from the pressure switch.
Would 5 oz in a 28oz system constitute: "Shuts off the compressor if the refrigerant charge (pressure) is excessively low"?
With out digging deeper, and I really don't have time for that, some vehicles have a "fail safe" mode. If the computer sees, values from switches/sensors that don't make sense, it will turn the fans on.
Question: is there a shraeder valve in the port for the switch? If there is, then no need to discharge the system when changing the switch.
