Help needed evo 3 loom in cc gsr

[GsrGod]

Hello Guys , i know there is alot of discussion about this but something isnt clear, im using the Jap spec looms both GSR and Evo 3,

The problem is the following:

for the radiator fan , power steering, oil pressure switch etc plug i have some doubts about the colour matching

from the gsr loom that runs under the radiator which is supposed to be coupled on to the evo 3 loom there is a Yellow wire which seems to me to be a blur.

Evo 3 loom ( yellow-white)---------------------------- Gsr loom ( yellow-white) (solid yellow).

from what i saw the wires are interchanged on the plug so from the gsr loom it comes in yellow and leaves on the engine loom side yellow -white. is this correct?

real question which signal is the (yellow - white )wire signal from the evo 3 loom? power steering or oil pressure?

 

[EVOCPE]

Power steering is a solid yellow wire if that helps

 

[4piknup]

http://www.4gtuner.com/topic/18751-4g93p-into-siemens-jumbuck/

my diagram is in post #4 it is hand drawn and shows the wiring for the 6pin connector under the master cylinder.

it is difficult to tell the 2 wires apart as they are both yellow. i picked them by the position on the plug
around the sides of the diagram are the traces for all the individual wires that are contained on the plug A-09

this should explain, and is a amalgamation of 5 or 6 wiring loom diagramms.

also this may help and is a excerp from a discussion between me and neil when i had some issues.


As for the chassis plug There are 6 wires in the gsr engine loom. There ar 2 yellow wires with silver rings, One of these The top corner one near the plug locking tab goes to the power steering pump idle up connection,the other yellow one,bottom corner goes to the oil temp sender in the side of the gsr head,(I can't quite remember here) either water or oil sender, You will know which,coz one or the other has the plug coming out of the engine loom. Then join the black to the black in the jumbuck loom and the green is radiator
fan relay trigger wire,join it to the green in the jumbuck loom.

hope this helps. i have a gsr engine loom in a proton, but i still had to wire that 6 pin plug in.

as i said above, pick the wires by the plug position.

 

[GsrGod]

solid yellow is from the gsr loom , becuase the evo loom has no solid yellow and there is only one yellow wire with a silverish dot on it. so i reckon the evo 3 loom makes provision for either the PS or the oil pressure light . its just to figure out where the evo 3 yellow/ silverish wire goes too in the ecu.

 

[4piknup]

going by the pinout for evo 1-3 here:
View attachment EVO I-III ECU COLOUR PINOUTS.pdf
sourced from here:
http://www.4gtuner.com/topic/6740-evo-ecu-pinout-colour-chart-completed/

so the ecu needs the power steering yellow wire onto pin 37 of plug b26 on the ecu. (as shown on the hand drawn pic in post #3) doesnt even really need it as it doesnt do much according to the guys at ecmlink.

ECU doesnt need oil pressure wire, that is for the light in the dash.


does that help?

 

[GsrGod]

Hey dude thanks for all the feedback its appreciated , but what i dont understand is the plug goes directly to the ecu on the evo 3 loom, so where is the oil signal? i dont have this wire hmmmmm, even before when i bought the car i have never seen the oil light indicator on the dash light up. this is strange

 

[4piknup]

yes, had me stuck as well. the power runs the opposite direction. look at the hand drawn diagramm again. power runs from the dash oil bulb down the body loom past the fuse box then into the pin6 of A-09 (the evo loom) then it goes to the oil pressure switch.

1. do you have continuity from pin6 of A-09 to the oil pressure wire? engine loom side
2. do you have continuity from pin6 of A-09 to earth when engine is off?
3. with the key at run position do you have power at body loom side of pin6 A-09
4. if you earth body side of pin 6 A-09 the oil light on the dash should light (or if A-09 is plugged in, earth the wire at the oil pressure switch to light the dash light.

I am not sure of your wire routing for the oil sender, as i have a 4g93. the oil sender is next to filter i think? and does the oil wire run with the wire for the o2 sensor? or does it exit the loom near the washer bottle and run with the air con loom?

 

[GsrGod]

Actually i have a GSR and doing a evo 3 conversion (engine only) so i just changed the loom on the engine side, i didnt check any continuity as yet however when times permits i will, i just wanted to clarify the colour code of the oil and power steering.

i will be sure to report back my findings.

thanks

 

[4piknup]

good luck. let us know how you go

 

[Tom N]

Actually i have a GSR and doing a evo 3 conversion (engine only) so i just changed the loom on the engine side, i didnt check any continuity as yet however when times permits i will, i just wanted to clarify the colour code of the oil and power steering.

i will be sure to report back my findings.

thanks

Why are you changing the wiring harness?

 

[GsrGod]

well from what i read it wasnt necessary to change the GSR loom but my loom was not to good some plugs were broken so i decided to change it out to the evo 3 loom since it was in a much better cosmetic state.

should crank up the engine today hopefully , BTW does any one know whats the correct fitting size which goes to the outlet of the oil plate on the engine for the cooler? is it 10An?

 

[GsrGod]

guys this fakin oil switch light for the dash doesnt work, there is a spare yellow wire which i havent used on the plug im assuming thats the oil wire ??? please your feedback thanks

 

[4piknup]

if you follow the steps in post #7 and report back, we will be able to diagnose any faults with the oil pressure light curcuit.
is there some reason you cannot do this?

or, posta pic of the plug and wire you are talking about, showing wire position in the connector

or, just earth the wire and see if the light goes on. if it does, then it is your oil wire.

 

[GsrGod]

Ok i was succesfull i wasnt focusing , thanks guys for all your input .......now everything works perfect i think what they previous owner of the car did they removed the OEM oil switch wire and sensor and they installed the oil pressure sender for oil pressure so the wire was either cut or hid away in the loom .

just started the engine took some time for the oil light to come off (is it normal since i prefilled the oil cooler(new)). tumbled a few time but then eventually it came off.

Now im getting a mis idle , im not sure if the plug wires are at fault , tell me guys when you remove one by one at a time the injector plug while idling is the engine supposed to mis idle , becuase i suspect one of the cylinders mis firing

when i take out the furthest one fromm the timing cover no change , the rest i get a drop in idle and greater mis idling .... share your views.

i havent changed the plugs nor the stock plug wires since i bought the engine .

 

[4piknup]

Ok i was succesfull

when i take out the furthest one from the timing cover no change , the rest i get a drop in idle and greater mis idling .... share your views.

i havent changed the plugs nor the stock plug wires since i bought the engine .

Good work mate and congrats.
sounds like you have a miss
put a volt meter on the missing injector, it should have a small voltage. 100% duty is 5v, so will be maybe 0.5v?
can you feel that injector ticking?

change the plug with another one and see if the miss moves to the new cylinder.
test the lead, should be around 300ohm per 300mm length. just measure them all and the shortest should have the least resistance and the longest should have the most. the rest should be proportional to their length.

have you done a compression test? wet and dry?

 

[GsrGod]

Actually i can feel all the injectors ticking, but what i havent done is change the plugs nor test the wires, that will be done during the course of today hopefully,
i havent done any compression test as yet perhaps later on if i dont get thru with the smaller tests first.

Im hoping the wires or the plugs are at fault will keep you guys posted .....

 

[khubner1]

change you plugs first they're probably fouled

 

[GsrGod]

So it was the plugs thank god problems fixed.
car started without any issues....

Happy holidays !!!!!

 

[GsrGod]

guys im having a small problem with my engine , when i press the accelerator it stallls for a brief second then revs could be a Idle control servo issue?

 

[khubner1]

mine does a similar thing (i have a known idle stepper issue) although mines only when cold. is your at all times or only cold. if it's all times i might hazard a guess timing might be off alittle.

for those alil more in the know timming on these engines is 10' btdc right?