I recently replaced my ecm on a Chrysler 300 2007 2.7 V6 it was flashed for my car, when I installed it every thing works except ac\heater control, the old ecm was shorted is it possible that the short may have blown the ac\heat control unit, all fuses has been checked. Please help

 

no they have nothing to do with each other
the PCM is for the engine and transmission only.

 

Have you any ideas to why the AC\heat wont engage, the Climate control only partly lights up.

 

Sorry that was the ECM not PCM. that shorted

 

ECM and PCM are the same thing. Try jumping the ac clutch relay pin 30 and 87 make the clutch come on with teh car running that will tell teh PCM that u have ac.

 

Thank you I have discovered to problem, there is a relay in the front fuse box replaced that and every thing started to work, once again thank you