06 Automatic Temperature Control -- Dead
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06 Automatic Temperature Control -- Dead
Today, driving back from lunch, the A/C quit. The display on the climate control was blank, and it would not turn on.
Checked the fuses first, OK. Did some reading here, tried the headlight trick, then popped off the dash and unplugged the ATC for a few minutes and reconnected, still dead. A (hot) five hour drive later, it's still dead.
Stopped by the local Ford dealer, the ATC head is $406 and change. (Counter guy came out said four oh six thirty seven...I said I wanted a price, not a part number)...
A little steep for just testing.
Any suggestions? Anything else I should try? Any online source cheaper? Anybody have a part number I could search? Any chance for a junkyard EATC...and what years would interchange?
THANKS!
Checked the fuses first, OK. Did some reading here, tried the headlight trick, then popped off the dash and unplugged the ATC for a few minutes and reconnected, still dead. A (hot) five hour drive later, it's still dead.
Stopped by the local Ford dealer, the ATC head is $406 and change. (Counter guy came out said four oh six thirty seven...I said I wanted a price, not a part number)...
A little steep for just testing.Any suggestions? Anything else I should try? Any online source cheaper? Anybody have a part number I could search? Any chance for a junkyard EATC...and what years would interchange?
THANKS!
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Yep, I think you're nuts. I tried that (I actually searched the forums before posting). Wish it had been simple like that.
Going out in a bit to get the meter on it, be sure power is getting to the ATC, and ground.
I understand crazy problems. I had a '90 Grand Wagoneer. Ran it for like 225k miles. Towards the end of it's life, it wouldn't start if the heater was on. It'd crank over and over, but not fire. Figure it was a grounding issue, but never worked it out, just learned to turn the heater off first.
I tried that (I actually searched the forums before posting). Wish it had been simple like that. Going out in a bit to get the meter on it, be sure power is getting to the ATC, and ground.
I understand crazy problems. I had a '90 Grand Wagoneer. Ran it for like 225k miles. Towards the end of it's life, it wouldn't start if the heater was on. It'd crank over and over, but not fire. Figure it was a grounding issue, but never worked it out, just learned to turn the heater off first.
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Joined: Jan 2011
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From: Woodstock,IL
I had an 06 it only happened one time to me but it worked. my buddys 06 did it all the time I guess and the headlight trick seemed to always work him you might have a bigger problem. Hope you get it figured out!!!
Postmaster
Joined: Aug 2006
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Your not the first person to have this issue. For what ever reason it seems the EATC module likes to die for some...
P/N: 7C3Z-19980-GA
MSRP: $407.07
Here are a couple of sources with very fair pricing on the module.
TascaParts.com
Tousley Ford Parts Depot
P/N: 7C3Z-19980-GA
MSRP: $407.07
Here are a couple of sources with very fair pricing on the module.
TascaParts.com
Tousley Ford Parts Depot
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Thanks!
Checked power and ground today...everything looks fine. Looks pretty much like it's the unit. I'm going to pop it open tomorrow and see what it looks like inside. I'm expecting a fairly simple control circuit, maybe a couple of eeproms, with a lot of i/o (buttons on the front, sensor inputs, relay control outs). With luck it's a cold solder joint or broken trace....we'll see.
Checked power and ground today...everything looks fine. Looks pretty much like it's the unit. I'm going to pop it open tomorrow and see what it looks like inside. I'm expecting a fairly simple control circuit, maybe a couple of eeproms, with a lot of i/o (buttons on the front, sensor inputs, relay control outs). With luck it's a cold solder joint or broken trace....we'll see.
Senior User
Joined: May 2010
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From: Duluth,MN
sorry to hijack your thread but can I add eatc to my 06 xlt? I did a search and wasn't happy with the results!
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Hotshot
Joined: Aug 2006
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From: Whittier, CA
I think it would be very difficult to retro-fit.
Back to the OP, there are a lot of guys here with modules doing the same thing as yours, mostly intermittently. Not me, I don't have that option, but I'm interested in your result. If you can fix that thing you will be a hero to many.
I suggest you open it and inspect all the solder joints. I'm thinking it has a problem similar to the overhead consoles and FICM's where the lead free solder results in crappy joints that don't handle temperature fluctations well. You could take a fine point solder gun and touch up all the joints, and see what that does.
If that doesn't work, then start looking at the surface mount relays, which I expect it has a few. Because of the intermittent nature of the problem for most, there is a good possibility that it is a mechanical relay that has bad contacts. That might be easy enough to t-shoot and replace.
All you have to lose is four oh six thirty seven.
Back to the OP, there are a lot of guys here with modules doing the same thing as yours, mostly intermittently. Not me, I don't have that option, but I'm interested in your result. If you can fix that thing you will be a hero to many.
I suggest you open it and inspect all the solder joints. I'm thinking it has a problem similar to the overhead consoles and FICM's where the lead free solder results in crappy joints that don't handle temperature fluctations well. You could take a fine point solder gun and touch up all the joints, and see what that does.
If that doesn't work, then start looking at the surface mount relays, which I expect it has a few. Because of the intermittent nature of the problem for most, there is a good possibility that it is a mechanical relay that has bad contacts. That might be easy enough to t-shoot and replace.
All you have to lose is four oh six thirty seven.
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To the hijack...right now, I kind of like the manual system. :P My '99 SD never had any trouble with the manual controls. I'm only 2 payments into this truck and it's taken a dump.
Anybody have a wiring diagram/pinouts for the 2 connectors on the backside?
Anybody have a wiring diagram/pinouts for the 2 connectors on the backside?
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Thanks Bill.
Got the schematic and did some trouble shooting. Found a broken wire in the connector, LTBLU/BLK, always hot. It started storming just now, so didn't get it fixed, but should be simple enough (that is, if pin pushes out of the connector OK).
Got the schematic and did some trouble shooting. Found a broken wire in the connector, LTBLU/BLK, always hot. It started storming just now, so didn't get it fixed, but should be simple enough (that is, if pin pushes out of the connector OK).
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