MA Mondeo TDci - AirCon Issue

[Fordmondeo]

Hi There,

I am writing this post in the hope I can find out some more information on the problem I have.

The problem is that the A/C compressor is not engaging until the engine reaches temperature and the thermo fan starts.
I have my own set of gauges to check refrigerant level and this is not the problem. All fuses and relays are ok. The A/C works fine when running even though they are a bit weak.
From what I have read the thermo fan is controlled by the PCM( might be called body control module) which is located in front of the front left wheel. I have checked the wire that goes from the PCM to the thermo fan it has a habit of failing (UK ford forum had the details), this is ok. I have done the self diagnostic test on the climate control module, no faults stored or active.
My next step is to buy an OBDII scanner and software to see if there are any faults active.
I have narrowed it down to the climate control module, the PCM or the thermo fan controller.It seems the signal from the climate control to turn on the A/C is not getting through to the thermo fan. All of these parts are expensive.

Is there any wiring diagrams available or a workshop manual on this forum?

I don't want to take it to ford as they would charge an arm and a leg to fault find and then just do the usual replace and hope that was the problem.


Thanks,

Luke