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Guest Message by DevFuse
 

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hopefully last time for wiring help...


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3 replies to this topic

#1 shuffbag

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Posted 13 July 2011 - 04:55 AM

this is a ej25dohc but im using a 1990 ej22 loom and ecu

ok so im almost done with my wiring, but need a little help..

from the ecu plugs im guessing i can completely remove are;
-atmo sensor
-state id (for cali i guess)
-park switch
-the 2 air con wires
-neutral switch
these are all i have from the ecu that im not 100% sure about

which is the gearbox id pin and if im now running this engine in a manual what do i do with it? chop it/ground it?

i have 2 wires from sensors, 1 on the block the other 1 on the water cross over. which i have not attached, im guessing they need to be tapped in or are they just for gauges? they are the single pronged sensors see pic below VVV
Posted Image

since im using ej22 wirng on this engine i had to pull the intake wiring off a car at upullit (wrecker) and because of this the IAC valve plug wiring was chopped off!!!!
so can some one with a ej22 tell me which colour goes to which pin in the IAC plug? below are my ej22 loom side and the ej25 plug which is the same but the colours are not the same VVV
ej22 loom
Posted Image
ej25 plug
Posted Image

ok fuel pump relay...
thick yellow is constant power
thick black? does this run to the pump?
green comes form ecu
and at a guess thin yellow wire needs switched power, not constant?
Posted Image

and last question (im sure there will be more)
powering, i have reread the ea2ej pdf and am still scratching my head.
i have done this conversion before but have not had the fuel pump working?
so what im thinking is....
the thick yellow wires to the ing'relay and back up power need constant power.
the black is a ground
the think yellows with red stripe supply power when the loom/ecu when the relay clicks over
and the light green wire is what makes it all happen? (this im not sure on) so this needs to be tied in with the "ON" position of my ing'switch in the car? VVV
Posted Image
i would like to atleast have spark before the weekend :)
thanks

Edited by shuffbag, 13 July 2011 - 04:57 AM.


#2 Gloyale

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Posted 15 July 2011 - 07:52 PM

[quote name='shuffbag']this is a ej25dohc but im using a 1990 ej22 loom and ecu

ok so im almost done with my wiring, but need a little help..

from the ecu plugs im guessing i can completely remove are;
-atmo sensor
-state id (for cali i guess)
-park switch
-the 2 air con wires
-neutral switch
these are all i have from the ecu that im not 100% sure about

which is the gearbox id pin and if im now running this engine in a manual what do i do with it? chop it/ground it?

[/quote]

A/C wires, and state ID can be cut out. Neutral/park/and auto/manual swithes depends on the swap. What year trans are you using? does it have a neutral switch in it?
[quote name='shuffbag']
i have 2 wires from sensors, 1 on the block the other 1 on the water cross over. which i have not attached, im guessing they need to be tapped in or are they just for gauges? they are the single pronged sensors see pic below VVV
Posted Image[/qoute]

Those are for temp gauge and oil pressure dummy light. They will connect to the Yellow/green and Yellow/Black wires of you're cars original engine harness respectively. Install a 270 Ohm resitor between the Temp wire and ground to correct the gauge reading from EA to EJ.


IAC issues.

Yellow = 12v+ center pin
white = close (ECU grounds to close)
Black = open (ECU grounds to open)

[quote name='shuffbag']
ok fuel pump relay...
thick yellow is constant power
thick black? does this run to the pump?
green comes form ecu
and at a guess thin yellow wire needs switched power, not constant?
Posted Image[quote]

Thick black/red is power out to pump. thin yellow is ground for the relaycoil. Green is the same wire to ECU "on" from your Ignition switched source.

[/QUOTE=shuffbag;1031254]

and last question (im sure there will be more)
powering, i have reread the ea2ej pdf and am still scratching my head.
i have done this conversion before but have not had the fuel pump working?
so what im thinking is....
the thick yellow wires to the ing'relay and back up power need constant power.
the black is a ground
the think yellows with red stripe supply power when the loom/ecu when the relay clicks over
and the light green wire is what makes it all happen? (this im not sure on) so this needs to be tied in with the "ON" position of my ing'switch in the car? VVV
Posted Image
i would like to atleast have spark before the weekend :)
thanks[/QUOTE]

The thick yellows are constant, the thin yellow is Ig. Switched.......supplys the relay, the Igniter, and coil....then on the diode, comes out Light green for ECU and fuel pump "on"

Black is ground.

#3 shuffbag

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Posted 16 July 2011 - 04:14 AM

ok i did think oil and water sensors, thanks for confirming.

it is all powered correctly now and fuel pump relay is ecu controlled. spark at all plugs :banana:

ok now for the extra wires from the ecu,
- aircon wires i will remove
- fan control will be removed
- state id will be removed
- atmo sensor?
- neutral switch?
- park switch?

it is a auto ecu and i will be running a ej d/r 3.9 5 speed

#4 Gloyale

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Posted 16 July 2011 - 09:13 PM

ok i did think oil and water sensors, thanks for confirming.

it is all powered correctly now and fuel pump relay is ecu controlled. spark at all plugs :banana:

ok now for the extra wires from the ecu,
- aircon wires i will remove
- fan control will be removed
- state id will be removed
- atmo sensor?
- neutral switch?
- park switch?

it is a auto ecu and i will be running a ej d/r 3.9 5 speed



You will want to use the fan control wire to trigger a relay (ground side) of a relay. More reliable than the switch in radiator.

Atmosensor is built into ECU....shouldn't have any wires.

Cut the Auto/Manual wire to signal manual.

Hook the neutral switch wire to the neutral switch on the trans. (grounds when in neutral)

ignore park wire(cut)




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