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Discussion starter · #22 ·
There have been a couple of suggestions about fitting a VII, or even VIII 260, ECU in a IV/V/VI

They should work with a few wire swaps ;) HOWEVER the VII, and later models, have a totally different radiator fan control system :( :

The fan is variable speed and controlled by its own "black box" which responds to a variable frequency output from the ECU

You should be able to use the VII ECU but you would also have to use the VII fan assembly and add a few chassis wiring mods

Grant
 
hi grant, you said you hav the evo 1-3 manuals also, can you post them up too. . .would you by chance hav the pin outs of a manual for the 94' 1.8t gsr?? im buyin one of these 1.8t 2morra and it has a slight problem, but i will need some wiring info to get by. thanks
 
Hi Grants,

For the Evo 6 connector, you have the ISC coils labelled as 1, 6, 3, and 4. While another web page labelled them as A1, B1, etc. Below is how they tie up. Can you explain why it is not 1, 2, 3, 4?

Is it because the ISC connector is 6 pin and you are identifying what specific pin in the connector to the IAC valve the connector leads to?

04 - Idle Servo 1 - ISC Motor Coil (A1)
18 - Idle Servo 6 - ISC Motor Coil (B2)
17 - Idle Servo 3 - ISC Motor Coil (A2)
05 - Idle Servo 4 - ISC Motor Coil (B1)
 
off topic.

wiring up defi set.

mph wire from defi display.

Attach to?

Speed sensor i guessed at.

nope.

Also the wire colour is not the same as it says it should be.

Taking it the FQ300 was different to listed above.?

Also which should i splice it into?
 
Ok just been looking at the e7 into an e6 option.

If the above is correct, then the only pins to worry about would be pins 20,21,22 which all control the fans and the aircon ? and pin 87 which is Idle Switch ??? on the e6 and is ACD signal in on the e7.

So what exactly would need to be done, and my reason for asking, is I have been offered a cheap evo 7 Ralliart Ecu.
 
Disconenct the idle switch wire.

Then swap wires 32 and 34 (A/C Lo and Hi fan). Disconnect 20 and 21 (rad Lo and Hi fan)and connect 20 to the wire that is now at 32 and connect 21 to the wire that is now at 34.

That's all that is needed.

Edit: you might want to double check that the A/C Hi and Lo are correct for both the 7 and 6 pinouts above. I need to do this myself on the car I converted.
 
Wreckleford said:
Disconenct the idle switch wire.

Then swap wires 32 and 34 (A/C Lo and Hi fan). Disconnect 20 and 21 (rad Lo and Hi fan)and connect 20 to the wire that is now at 32 and connect 21 to the wire that is now at 34.

That's all that is needed.

Edit: you might want to double check that the A/C Hi and Lo are correct for both the 7 and 6 pinouts above. I need to do this myself on the car I converted.
Is the A/C fan the same as the Rad fan on a 6 then ?

Also would doing that not cause a problem if the A/C was on when the engine gets hot, it's going to try and switch the fan on again, thus giving it twice as much current ???
 
It won't cause a problem. It is working the same as before, except that the a/c fan pins are being used to trigger the radiator fans as well as the a/c fans. The ECU only pulls the fan relays to ground, so it is not as if the total fan current is passing through the ECU.
 
evo5 power FC in evo1-3

Installed power fc d-jetro from evo5 in my evo1. Did this without patch harness. Only two wires need to need to be added to harness to make fans work. Everything else works with no wire swaps. Including tach signals as the diagrams suggest the outputs for tach are different.

pin 20 and 21 are open on evo1 harness. I added those wires from scrap harness. Pin 20 gets connected to pin 16, and 21 goes to pin 3.

evo5
20=fan hi-a/c
21=fan lo

evo1-3
16=fan hi-a/c
3=fan lo
 
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