ETAC stuck in defrost mode, controls not working

dd350 · May 15, 2014

EATC stuck in defrost mode, controls not working

Hi all, new member here and I've acquired a '99 EB with electronic climate control problems. It's blasting full in defrost mode, won't shut off and won't respond to any control inputs. Any suggestions appreciated, hoping this is a fairly common problem.

Thanks,
David D

bedrck46 · May 15, 2014

Condition
The blower motor operates continuously in high speed — EATC

Possible Sources
Circuitry short/open.
A/C blower motor speed control.
EATC module.

dd350 · May 15, 2014

Okay, so if I'm looking at open or shorted circuits, where would be the best place to start looking for problems? Fuses/relays to check?

Thanks,
David D

bedrck46 · May 15, 2014

There is a procedure in the service on how and what to check Would suggest you get a copy of;

Ford workshop manual on DVD. Can be obtained from seller "morpheousking" on e-bay. Cost about $20.00 Much better than Clymer, Haynes or Chilton and also includes wiring diagrams

Don't waste your money on a Clymer, Haynes or Chilton Manual.
It is well worth the $20.00 just make sure you get the DVD for your year as the seller has different DVD's for different years

dd350 · Jun 15, 2014

Thanks for the suggestion, but can someone point me in the right direction of where to look to fix this? The climate control unit display is working, but it isn't responding to controls. Any other suggestions?

bedrck46 · Jun 15, 2014

the best place would be the service manual it will give you a wiring diagram, locations and a trouble shooting chart. Had you obtained that last month you may have had it fixed by now

dd350 · Jul 24, 2014

Thankfully I found another post with the same problem and the solution: the #2 fuse (5A) was blown.

http://www.expeditionforum.com/f16/heater-defroster-fan-stuck-19907/

bedrck46 · Jul 24, 2014

still would benefit you to get a copy of the service manual

dd350 · Jul 24, 2014

Thanks, but I'd already bought a Haynes.

bedrck46 · Jul 24, 2014

the manual I suggested is cheaper and also its a Ford Service manual with the service information and prints specific for you year and model Had you had that manual you would have been able to fix your problem The Haynes manual may be ok for general information but that's about all its good for

ETAC stuck in defrost mode, controls not working

dd350

Active Member

bedrck46

Guest

dd350

Active Member

bedrck46

Guest

dd350

Active Member

bedrck46

Guest

dd350

Active Member

bedrck46

Guest

dd350

Active Member

bedrck46

Guest

Similar threads

Latest posts

Staff online

Members online

Forum statistics

Share this page