Inoperative air and heat in the cabin

[Anonymous]

Having an issue with the A/C and heat control panel ...cycled through all the buttons and no response of any air blowing into the cabin ...never had this issue out of the other 5 SHOs I've owned ..anybody have an idea? Would a bad fuse cause this ?

 

[Devin]

Does the EATC have power?

 

[sperold]

Vacuum plays a big role in the controls, find the vacuum supply line from the engine.

 

[rubydist]

so are you saying the fan doesn't run no matter what you do? or that the air always goes to defrost no matter what you do?

 

[Anonymous]

so are you saying the fan doesn't run no matter what you do? or that the air always goes to defrost no matter what you do?

Yes I cycled through all of the controls and no response of anything blowing into the cabin

 

[Devin]

Probably either the BCM or the blower motor (though I'm still not sure if there is electricity to the EATC). Luckily both of these are accessible through the glovebox (at least on Gen 1 cars).

I'm not sure how similar Gen 2 HVAC setups are to Gen 1, but you can refer to a picture I took of the plenum. The blower control module is the white sticker just below the electrical connectors.
http://www.shopowered.com/diagrams/

You can check for voltage from the connectors as well. The blower harness is the one that extends over thetop of the plenum

 

[SHOdded]

No codes set in the EATC? Not necessarily helpful, but ...

 

[Anonymous]

No codes set in the EATC? Not necessarily helpful, but ...

You got me there ...what's the EATC ?

 

[SHOdded]

Climate control, the thing you push all the buttons on to set MAX A/C, VENT, FLOOR, etc? You can get it to display codes using the technique listed in this post:
http://shoforum.com/index.php?threads/eatc-heat-issues.130968/#post-1439596

In case you should need it repaired:
http://circuitboardmedics.com/ford-eatc-electronic-automatic-temperature-control-repair/

Probably cheaper to get a used one

 

[Devin]

Electronic Air Temperature Control aka the temperature control panel that you've been pressing buttons on

 

[rubydist]

ok, so does the display light up on the eatc, or is it all dark?

 

[Lateral Gs]

This weekend I had no air flow at all, the fuse was blown. The blower motor was seized up some how and kept blowing the fuse. Installed blower motor and I have ice cold air. Hope this is your problem because it was a $30.99 fix. Cheap cheap.

 

[Anonymous]

ok, so does the display light up on the eatc, or is it all dark?

Yes the display lights up

 

[rubydist]

ok so then do the self-test on the eatc. there is a thread on the forum with how-to instructions. let us know what it tells you.