05 CDI AC diagnostic through climate control unit
 

I am trying to read my pressures and temperatures through the climate control unit and I've had no success getting into the diagnostic displays. Some say press the rest button for 20 sec, others O and rest, or auto and a few more. Wondering if anyone knows what works?

Do you have dual or 4 zone climate? Only the 4 zone climate has a display That can show any codes. The best way to read climate control codes is with a scan tool like icarsoft, foxwell or xentry.

Ok good to know I was waiting my time. I connected with Foxwell was able to move all the flaps, motor speed, monitor engine hydro carbons and a few other things. Nowhere could I find evap, condenser temps or lo and high side pressures. I was hoping for more data.

Under live data you'll find a temp/ pressure sensor and a compressor duty cycle. That's all the sensors the system has. No low side sensor. You'll need AC gauges for that.