Check the HBC see its still working but if its not working at all could be a fuse or even the motor, but check the fuses first.....this is the main page of the CC check through see if your fault is listed
If you do a reset as per instruction on this site it will throw you an error code.. Mine is an auto 2.3 Ultima and mine did exactly as yours has done.(except mine has a warrenty on it). I took it to the garage and explained that I had error code "57" they checked it and replaced the resistor. No idea on cost, inside of car is now like the Sahara.