Ecu based fan control ?
 

Like in title...

Is it possible to control for example fan speed or turn-on moment via ecu ?

I've been trying to track down some solid answers on this too. I know you can, but I'd like to know table locations, especially for the 9653xxxx based roms.

Yeah, that's exactly what I search for - table locations. For now - I just installed switch which I use to turn on fan, when I want. But controlling fan via ecu would be great thing.

you can turn it off and on via evoscan

search for thermo fan

there are maps in most roms.

i can give you more details tomorrow.

the 941705 v7 roms have thermo fan control. look up merlin's tuning guide, he goes over the fan control

Thanks !

What ROM are you using? I spend the last hour or so searching on here and found the 96530006 based maps.

And now w/ headers for those of us still using imperial units... :D

Which gets you a table like this:
http://www.dsmtuners.com/forums/atta...s-fan-maps.png

I am using 88590015 with v5.10

Something like this then.

Interesting, I tried this with V7 and no go...tables are greyed out (invalid or incomplete). Any ideas?

Mine are?

I copied them from a working xml file strange..

Figured it out...

care to share the resolution?

WoW, thanks !

Bump. I've paste it to my xml. and I don't see this tables. WTF ? ;)

Set your user level to developer

It's always is... ;)

You sure you are modifying the right xml?

It should show up regardless of it being correct or not with that user level.

Hmm... I agree, that I am rookie, but I hope it's right xml. I've modified 88590015.xml, which comes with v5.10 JDM Map package. My laptop is weird maybe

you happen to run windows 7?

Win Xp. Maybe I should modify some evo9base.xml ?

This second pack is what I use: http://evoecu.logic.net/wiki/File:88..._Boost_Ctl.zip

Doesn't seem to inlucde percent 128 scaling so add this to your rom.


<scaling name="Percent (128)" units="%" toexpr="x/1.28" frexpr="x*1.28" format="%.0f" min="0" max="100" inc="1" storagetype="uint8" endian="big"/>

Thanks again RoadSpike. I will try this tomorrow, because I didn't find time today. I'll report whats up

Hello. I'd like to refresh this topic, because I found strange thing. I have changed few columns in my fan settings and I observed that my fan is turning on only when I turn off igintion. When engine is working - fan doesn't turns on... WTF ?
;)

Roadspike,

Thanks for those fan tables...

Do you know a place where I can get as close to a complete 88590015v7 xml as possible. I keep finding things that I would like to mess with(in various tuning guides) and then find out they are not in my v7xml. Also should I put these in the base 88590015 file or in the v7.xml?

thanks,

Mine works like a charm. ??? Are you sure the addresses you used were correct for your rom?

88580714/88580014 tables are as following....

<scaling name="Percent (128)" units="Percent (%)" toexpr="x/1.28" frexpr="x*1.28" format="%.0f" min="0" max="100" inc="1" storagetype="uint8" endian="big"/>
<table name="Thermo Fan Duty 0-22kph" category="Miscellaneous" address="5114" type="3D" level="2" swapxy="true" scaling="Percent (128)">
<table name="Conditions" type="Static X Axis" elements="3">
<data>Main Fan 0-22kph</data>
<data>A/C Fan 0-22kph</data>
<data>Main+A/C 0-22kph</data>
</table>
<table name="Engine Temp" address="713C" type="Y Axis" elements="12" scaling="Temp"/>
</table>

<table name="Thermo Fan Duty >22kph" category="Miscellaneous" address="4036" type="3D" level="2" swapxy="true" scaling="Percent (128)">
<table name="Conditions" type="Static X Axis" elements="9">
<data>Main Fan 20-50kph</data>
<data>Main Fan 50-80kph</data>
<data>Main Fan 80->>kph</data>
<data>A/C Fan 20-50kph</data>
<data>A/C Fan 50-80kph</data>
<data>A/C Fan 80->>kph</data>
<data>Main+A/C 20-50kph</data>
<data>Main+A/C 50-80kph</data>
<data>Main+A/C 80->>kph</data>
</table>
<table name="Engine Temp" address="713C" type="Y Axis" elements="12" scaling="Temp"/>
</table>

FYI, the road speed where they switch columns also varies from rom to rom and would not be exactly as it says. The values you have were based off my Evo7 GTA back when I found the maps but could be slightly different. The info is not that hard to find, but I can remember it not being something easily mappable.

There were also two Percent (128) scales out in the wild. One as Percent(128) and one as Percent (128). With and without the space, so if it does not work for one, try adding or subtracting the space as required.

does this allow you to turn the fan on earlyer then factory settings??

i have the OBD-2 force pass ROM. do i have the ability to do this or do i need a different ROM.

It does allow you to change when the fans kick on.

Even in your ROM patched with the OBDII for pass, the fan control table will still be there. Just add the correct tables to your xml.

Very sick. What are the conditions you all are using to trigger the fan?

Ok so I just copy and paste that table into my XML and I'm good to go?

Should be.

For me, I was more concerned with getting the A/C fan to have 100% duty cycle since I'm using an Evo 8 Ecu in my 2g Talon. Our fans aren't PWM controlled, and low duty cycle on the A/C fan wasnt' the best thing for our relays controlling the fans.

I also adjusted it so my fans kick on a little bit sooner, especially the A/C fan. My car was getting a little warm, and having the A/C fan kick on with the rad fan helped a lot.

is there a way to log to see when the fan comes on?