Help with EATC please.

[Moes8]

can someone point me to the wire/plug i can disconnect to prevent my climate control from suddenly switching from nice cool a/c to heat for no reason.
i have no diag. codes present and just as my car is getting nice a chilly inside the unit goes to full heat.

for now i just want to get it to cold and kill power to the blend door motor,whats the easiest way of doing this?

thank you if you can help me.

 

[Russo]

http://i9.tinypic.com/6ahhpu8.jpg

here's the page from the manual. looks like what you're looking for is on connector C272, the black one on the back of the EATC. Here's the pinout - http://i4.tinypic.com/4m1alx0.gif - pins 13 and 26 control the blend door actuator.

 

[Moes8]

sweet,thanks for quick reply, if that works i might put a toggle switch in there,if i cant find the real problem,already tried 3 different eatc units.

 

[Russo]

http://www.yousendit.com/transfer.php?action=download&ufid=E351E38B25337E07
check out this pinpoint test procedure from the manual, it might help you troubleshoot the cause of the problem. does the temperature on the eatc display change when it goes from hot to cold?