I was looking at those wondering what they did and when i disabled the first table, I though i would test that first, then zero out tables until I got the desired results.

I think once its disabled, It doesent matter what it does.

 

I mean the settings under system > ac

 

couldnt someone just zero them out and see if the compressor kicks on?

 

On my truck the A/C fan settings could not possibly work, I think. That is because as far as I know, the high-side switch in the A/C line is just that, a switch. It opens and closes at a pre-set pressure. The PCM couldn't know the A/C pressures because there is no pressure transducer. Maybe later model trucks, or some car, have transducers instead of switches and control the fans by pressures.

 

The PCM does monitor the AC pressure via a 5v sensor to control the ac clutch.

 

Wouldn't the sensor need three wires?

 

No. The wire is red with a black stripe if you want to look for it. You can log AC pressure in efilive/hpt in terms of voltage, knowing the range of the sensor and that its linear, you can calculate the pressure in the system if you really wanted to.

 

There is actually a PID that will give you actual A/C pressure in my 03 OS.