ECU Pin Swaps

4GTuner

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what it is supposed to do and does...Ive no idea. But it works perfectly without it.....and I have thought about asking Tom if the output could be reconfigured to switch something else. Maybe water injection
 
When you guys say 'another switchable output' do you mean using the reflash tool to tell the ECU to use that switch output for a different function?
 
Ecmlink full version, reconfihures it to anything. But im not sure if it is rpm based or what.
Pretty sure in ecuflash it can be reconfigured to any purpose also.

I have some variable voltage switches. The switch point is adjustable so could use airflow, rpm, boost, temp, whatever. And just has a on or off. Could use it for a pump or anything. I was going to try it on a active muffler.
There is a autospeed article on them somewhere.
 
Just finished changing the ECU over this evening, it's now running the 787 MAF, and 560cc injectors, but haven't changed over to the 14B yet.
Wiring on the OBDII plug was a bit puzzling, but I think it's sorted, a couple of the wires in it just terminated at the plugs above the ECU on the passenger side.
The pin swaps were as follows.

Pins 3 and 16 combined and moved to pin 20. - Rad fans to RAD FAN HI
Pin 40 moved to pin 11 - Waste gate solenoid
Pin 71 joined with pin 26, then left as is - Ground wires
Pin 33 to pin 3 - Fuel pressure solenoid
Pin 11 to pin 22 - Fan relay combined to A/C comp relay

Traced the single wire from the reflash socket back through the harness and moved that to pin 79. Rather than "add pin and wire to pin 79 of evo VI ECU(flash wire)"

OBDII Socket wiring:

Pins 4 & 5 of OBDII socket to pin 13 on ECU (grounds)
Pin 1 of OBDII socket to pin 56 of ECU (part of the 12 pin plug the GSR harness does not have)
Pin 7 of OBDII socket to pin 62 of ECU (part of the 12 pin plug the GSR harness does not have)
OBII socket already had the 12V supply wired into pin 16, so left that as is.

Car started fine, idled fine, drove and boosted fine. So mechanically it seems alright (no wild AFR's) (Tacho was being a bit iffy, looks like I'll have to disconnect pin 31 (tacho sig))

However I could not get my Tactrix cable to talk to the ECU, This may be because I do not actually have that 12 pin socket, unfortunately it's gotten lost in the mail according to AusPost, so I pushed the pins onto the correct ECU pins, but I cant say for certain that theyre actually connected correctly.. Upon asking ECUFlash to read the ECU I get:

[18:12:39.011] using metadata XML ID read_evo5 from file C:/Program Files (x86)/OpenECU/EcuFlash/rommetadata/read templates/read_evo5.xml
[18:12:39.027] J2534 API Version: 04.04
[18:12:39.027] J2534 DLL Version: 1.01.4358 Oct 10 2014 03:49:00
[18:12:39.027] Device Firmware Version: 1.15.4363
[18:12:39.027] Device Serial Number: TAefRcRg
[18:12:41.946] sending init sequence 2
[18:12:43.956] interface close

I also get the same error when the tactrix cable isnt even plugged into the car... So i'm leaning pretty heavily toward those pins not being connected to the ECU properly, will just have to wait for the next plug to arrive from spoolinup.com.
Unless someone has one of those 12 pin sockets laying around? Not sure if theyre on any other Mitsi's

In other news, I was driving down the road last night and lost all my dashboard lighting, and the passenger side tail light (brake light still works), swapped the light assembly over and it still didn't work, must be an issue with the harness, definitely not the bulbs. Checked the dash light fuses, all good, bulbs themselves are fine, must've burnt out a wire somewhere, lost on the tail light issue though :/
 
leadfoot said:
once you get that plug sorted take it to a mechanic and see it their obd2 scanner successfully interfaces
Click to expand...
Hopefully once the plug is sorted, the Tactrix cable/ECUFlash should work, if it doesn't then I'll see if I can get my hands on a scan tool.

Been reading, seems like it can be tempermental without a fully charged battery, mines only at about 11.6V at the moment, and my spare isn't much better, will have to drive around for a bit tomorrow to get it above twelve, hopefully that will help.

Also noticed that the car starts ridiculously fast now.. Feels instantaneous!
 
Is the 12 pin plug the obd1 plug? They are on 1988-1993 mitsi, and most other cars also. I got mine from a magna, I think it was a tp.
doesnt the tantrix cable only have 1 wire to the obd1 plug?

I have only used my tantrix cable on the nissan, and it reads ok from that one. Its a 2001 nissan and has no obd1 plug.
I have a obd1 plug here, its on a old gsr dash loom I have.
If you want it?
 
As I showed you Liam, that single wire to the obd1 plug just needs to be connected to the 'tip' pin of the little jack plug, that plugs into the tractix unit. If you don't want to wait, go to Jaycar and buy a jack plug to suit and wire it yourself.

That said, the error your getting would be different without that plugged in. It should poll the ECU a few times and then time out. If your car drives and you want to drop over and see if I can connect, I'm in town till Thursday night. Drop over one evening if you want.
 
Sorry, I should've specified, the twelve pin plug I'm talking about is the additional ecu plug that the later model evos have.
Not the reflash connector located near the obdii port.

I'll have to come see you another time George, im off to dongara for the next few days this afternoon

This is the plug I'm missing:http://www.spoolinup.com/12-Pin-Evo2G-DSM-ECU-Connector_p_89.html

Pins 56 and 62 on the Evo VI ECU (diagnostics pins) which come from the OBDII port pins 1 and 7, connect there.

Pin 79 on the Evo VI ECU is the reflashing wire, that goes to the OBDI Port.
 
Ok. The 4th ecu plug.
Im pretty sure that is the same as a vr4 ecu connector. I have one you can use, with pigtails.
Probably the spoolinup stuff will be here by the time you back.

I probably would have been tempted to pull the ecu cover and solder straight onto the brass risers. Its only 2 wires in that connector isnt it? The tx and rx wires?
 
jack of all said:
Ok. The 4th ecu plug.
Im pretty sure that is the same as a vr4 ecu connector. I have one you can use, with pigtails.
Probably the spoolinup stuff will be here by the time you back.
Click to expand...
If you've got one spare that'd be great, if not then I'll have to re-order mine from spoolinup, I highly doubt mines going to suddenly show up now :(

http://www.lancerregister.com/attachment.php?attachmentid=80172&stc=1&d=1171834907

Its the third plug from the left, pins 51-62.


Yeh, could solder them straight on, it would just be a bit messy is all. I kept the GSR ECU cover so it all fits up nicely
 
Well, I'm officially out of ideas. Had the OBDII port wired in using the factory spot, couldnt get ECUFlash, or Evoscan to talk to the ECU, so I chopped out the ports and rewired them in on the passenger side so that I could rule out shoddy wiring as a cause, still no success. ECUFlash simply goes
"sending init sequence 2"
"Interface Close"
And Evoscan doesn't work either :/
At least the car runs fine! :D
Going to try using a different laptop. Maybe my Windows 8.1 is too new for the programs, I havent been able to talk to any of our cars using ECUFlash & the Tactrix cable with my Laptop (2001 GT Forester & 2003 WRX Impreza)
 
jack of all said:
Yea, id be going back to xp if you have it.
Click to expand...
I've tried with dads XP laptop, only other option is my sisters Mac. I get the same 'errors' on the XP laptop. The next step i guess is to swap the ECU and see if that's the fault. It's definitely an MH7202F processor one, so it should be reflashable, but I'm out of ideas. Unless the Tactrix plug is faulty..
 

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