i need 1jz ecu wiring help GOT IT!!!! whoop,whoop

[rockn yota]

i have an '87 toyota pickup that i am trying to put a 1jzgte into and am having wiring problem, i have no wires in the truck at all and all i have is the engine harness for the motor and am missing the right 2 plugs of this pin out diagram, my question is what wires do i need for this motor to run out of those pin outs? and where do i wire them to, so far i have hooked up power to the +b,+b1,igsw, and battery and i don't have any spark, what am i missing. i either have a jzz30 or a jzx90 and i have this wiring diagram can anyone tell me if this is the one i need or i need a different one?http://www.jzgte.com/tech/1jzgte/Soarer.pdf

 

[rockn yota]

can anyone help me out?

 

[armyboot]

your ecu and harness needs to be grounded

 

[rockn yota]

thanks, that's a start

 

[1jzQuest]

I had the same issue - You should have like 4 extra plugs that are on the harness - The reason why no start is that there are 2 wires that require power as they were body plugs orginally - they power the injectors,ignitor,sensors. Look for another grey plug I cant remember the pin count - can get that when I get home - but you are looking for blk/org and blk/red wires. I found these wires by using an ohm meter and finding out what wire went were and what wire needed power. hope this helps

 

[rockn yota]

alright i found them they are, in a gray plug one goes to the 4 pin plug on the igniter and the other goes to one of the 2 wires on all the injectors correct? still not sparking, correct me if i am wrong the igniter fires when the crank sensor sense's movement, im thinking that i don't have power to the sensor or it is bad. which wire powers the sensors? one out of the same gray plug

 

[Gunnar]

So. The blue plug whith all white and black wires needs 12v.
The black-red and black-orange on the grey plug need 12v.

Need confirmation on these:
There is that small white plug (traction control ?) which should not be connected anymore.
There is a yellow thicker wire on one of the plugs that needs 12 volts ?
All the other stuff on the white plug there is for dashboard ?

 

[1jzQuest]

Yep that would be correct - one wire runs power to all injectors the other runs power to ignitor and all sensors. If still no spark -I would start by making sure all coils are showing 12v, make sure the other sensors have power as well. - you have everything grounded - block, back of head and one on the tranny, ecu. That is the basic's for spark really unless you have a bad sensor somewhere or the ignitor/ecu is poo.

 

[rockn yota]

ok so if i have power to the igniter should i have power at the coil without the motor cranking over? so i should check for continuity between the power wire to the igniter and my crank, and both cam sensors too?

---------- Post added at 01:49 PM ---------- Previous post was at 01:47 PM ----------

So. The blue plug whith all white and black wires needs 12v.
The black-red and black-orange on the grey plug need 12v.

Need confirmation on these:
There is that small white plug (traction control ?) which should not be connected anymore.
There is a yellow thicker wire on one of the plugs that needs 12 volts ?
All the other stuff on the white plug there is for dashboard ?

i don't have a blue plug so i cant help, i have the 2 ecu plugs, a white plug right by the ecu, and 3 gray plugs right together between the ecu and engine.

 

[rockn yota]

alright this is what i did to fix in case anyone was wondering, i ran power to the far right plug to B+, B+1, BATT, and IGSW, this bypasses the main relay so you don't have to dick around with that. Next i found the gray plug between the ecu and engine that has the 2 bigger wire in the middle of the plug, one is black with yellow stripe this is power to 3 injectors and igniter, the other is black with an orange stripe this is power to the starter solenoid, lastly you need the other black with a yellow stripe this is power to the other 3 injectors, wire power to the injector and igniter power wires,and then wire another power to the starter solenoid so when the motor fires you can disconnect this wire. also make sure you have it in neutral; the block, the head and the ecu all need to be grounded.

 

[supra941991]

you my friend are a life safer. now i just gotta find the right tranny

 

[rockn yota]

dude i have been racking my brain for a week about this, Thanks again for the help 92tealsupra!!!! I AM SO DAMN EXCITED shit is starting to get done.

 

[JP85MX73]

hey do you happen to have pictures of the body harness and ecu harness that needed to be spliced? i have 4 separate plugs coming from the firewall besides the 4 ecu plugs and honestly i dont know what to do.. i cant find any pics that match up with the non ecu (jzx90) plugs. I will post some pics up of what i have tomorrow. Btw im putting it into a mx73 cressida

 

[rockn yota]

dude what you said makes no sense to me this is my first swap i put it into a toyota pickup and i started with the jzx90 engine harness, and ecu, and just wired power to what it needed to run, i can give you pictures of what i ran power to if you need to.

 

[JP85MX73]

any help would be appreciated i will post up pics of what im talking when i am back on my computer

 

[JP85MX73]

Heres my ecu

This comes off the harness i dont know what it does

These are the body plugs coming from the harness

I have the ecu pinout, but i have no idea what the other wires do? This is a really stupid question but when you have to splice the ign batt and B+, shit where is it being spliced to i dont understand?
My cressy has 2 yellow bodyplugs and one white plug in the car which i cannot currently find a pin-out for.. i have the 5mge engine pinout but i dont get what im supposed to splice because the ecu goes straight into the engine harness.. Am i supposed to use a tracer on the harness to the body plugs?

 

[Gunnar]

I've got the same issue, they are most likely going to go to your body and dash etc. I'm going to trace them as much as possible this week to see what merges into my car through the original connectors (cut and solder).

I'm missing those two cut connectors btw, gonna try to source them off a 1997 lexus ls400 or something else that has the 34P 22P 16P 28P configuration.

 

[1jzQuest]

rocn- not for sure why you split the injectors- they should run on the same power wire- but grats on it running-
JP85 the plug you need to splice into for powering things (injectorss,ign,ect) is the last or bottom plug pic. BLK/ORG or BLK/RED.

 

[rockn yota]

i didn't slit the injectors they split in the harness before the plug.

 

[1jzQuest]

Soarer or chaser harness??
The chaser doesnt not split (what I have ) but I think the Soarer if not mistaken does.
I cut tapped into one wire at the plug that supplied power.