Possible Auto Heat/AC Control Unit Issue:
11-09-2010, 09:54 PM
#1
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Possible Auto Heat/AC Control Unit Issue:
I was driving my car the other day when I noticed that only the heat was working. If i put the climate down to 60 with the AC on it's still shooting out 90 degree heat...Also the sensor that shows the outside temp is showing ----F. It started at 104 and worked its way up to 127F and now it only shows ----F. Is this the Auto Heat/AC Control Unit or something else...Could it also be something as stupid as a fuse somewhere in the car to cause this?
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11-10-2010, 05:18 AM
#2
Check the online FSM, sounds like you've got two failures:
One is the ambient temp sensor, the other would be your "door mode" actuator or motor, which switches the door in your blower housing to either give a/c or heat. Sounds like it's stuck on heat.
There's a diagnostics/error code "tree" you can access right there on your auto display screen, but you need the pages from the FSM to confirm what's failed.
One is the ambient temp sensor, the other would be your "door mode" actuator or motor, which switches the door in your blower housing to either give a/c or heat. Sounds like it's stuck on heat.
There's a diagnostics/error code "tree" you can access right there on your auto display screen, but you need the pages from the FSM to confirm what's failed.
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