Looking for ECC info

[vilant]

I noticed the LED on the ECC (Electronic Climate Control)flashing a few days ago. The FSM says it will flash 60 times a second (this has to be typo, must of meant a minute, which it is doing) at a fault detection. I entered the diagnostic mode and the first # was 00(No system faults):confused:. As I hit the up fan arrow, the numbers climbed all the way up to 37, in this order 1-7, 9-12, 16,17, 19-24, 30,31,34-37. The FSM only covers 1-10 and there's nothing in the electrical diagnosis supplement about it either. Anyone know where a can find the list of parameters or codes that these numbers represent? :cheers:

[Z51JEFF]

Ive heard if its low on freon the display will flash.

[vilant]

That is true, 09 is low Freon detected. You would think that would be first number that popped up or when you select it and press the fan button (which gives you a value to whatever parameter is selected) I could see what its value is. I can't believe (although possible) all the numbers I scrolled through were fault codes. I believe they're parameters that can be checked to see what their value is. Thing is, I have no idea if value is good or bad without a reference. I'm wondering if there's a manual that just deals specifically with ECC, and if so, where do I find one.

[vilant]

Found some info on the internet that's not in my FSM, but some numbers are still missing.
http://ww2.justanswer.com/uploads/ivestoy2/2010-06-22_041426_1.gif

[scottfab]

I noticed the LED on the ECC (Electronic Climate Control)flashing a few days ago. The FSM says it will flash 60 times a second (this has to be typo, must of meant a minute, which it is doing) at a fault detection. I entered the diagnostic mode and the first # was 00(No system faults):confused:. As I hit the up fan arrow, the numbers climbed all the way up to 37, in this order 1-7, 9-12, 16,17, 19-24, 30,31,34-37. The FSM only covers 1-10 and there's nothing in the electrical diagnosis supplement about it either. Anyone know where a can find the list of parameters or codes that these numbers represent? :cheers:

What page did you see "second"?
My 90 FSM on 1C1-2 under Diagnosis says "minute"
It also says "00" represents that you've successfully entered the diag mode. Pushing the "Auto" button then lets you see the error codes. One for every time you push it.

[vilant]

What page did you see "second"?
My 90 FSM on 1C1-2 under Diagnosis says "minute"
It also says "00" represents that you've successfully entered the diag mode. Pushing the "Auto" button then lets you see the error codes. One for every time you push it.
Here ya go. I didn't push the fan button after I entered the diagnosis mode, but I did scroll up and down. My FSM doesn't give all of the parameters, only 1-10.
http://www.zr1.net/forum/picture.php?albumid=241&pictureid=2221

[scottfab]

Here is what mine says:
http://zr1.net/forum/picture.php?albumid=199&pictureid=2222

[vilant]

Not sure when my manual was produced, but it does say to be replaced by ST-364-90. What's strange is, this FSM actually has the LT-5 engine supplement in it already. Your version actually says to push the auto button (I called it fan, because it has a picture of a fan on it) to get the codes, mine doesn't. I pressed auto after I was in diagnosis mode and got code 09 (low Freon). So there's my problem. I would still like to know what the other parameters not listed are.:cheers:

[scottfab]

Not sure when my manual was produced, but it does say to be replaced by ST-364-90. What's strange is, this FSM actually has the LT-5 engine supplement in it already. Your version actually says to push the auto button (I called it fan, because it has a picture of a fan on it) to get the codes, mine doesn't. I pressed auto after I was in diagnosis mode and got code 09 (low Freon). So there's my problem. I would still like to know what the other parameters not listed are.:cheers:

16 = Water temp in deg C

[WVZR-1]

You might maybe check this thread over at the CF and pay particular attention to #5 in the thread, he's pretty much on top of the electronics and I've had others mention a "reboot" also. Don't know what the FSM mentions.


http://forums.corvetteforum.com/c4-tech-performance/2441639-90-climate-control-issues.html

See #5 for "reboot"!!

[vilant]

Thanks fellas, the list now has 2 more,

16 Coolant Temperature In degrees C
17 Solar Correction 114 = Max light 128 = max dark

still missing 19-24 though. It's been rebooted before the light started flashing (had the battery disconnected a couple of times a month ago). :cheers:

[Starman]

Look at my note under the "A/C Went Out" thread. My LED was blinking and I never could pull any fault codes out. You may want to carefully remove and disassemble the EEC and replace the large capacitor at the rear of the board where the wiring harness connects - same great quality as those in the Bose amps. Also look for cold solder joints on the PCB and re-solder as indicated.

[vilant]

Look at my note under the "A/C Went Out" thread. My LED was blinking and I never could pull any fault codes out. You may want to carefully remove and disassemble the EEC and replace the large capacitor at the rear of the board where the wiring harness connects - same great quality as those in the Bose amps. Also look for cold solder joints on the PCB and re-solder as indicated.
Thanks, if recharging the refrigerant doesn't correct it, I'll look into that, everything seems to be working correctly though (I was able to pull the code).:cheers: