HELP!!! With 1jz wiring in 89+ supra?????

478slimm

478slimm

New Member
Sep 23, 2013
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Georgia
OK I've put power to ecu, ran fuel pump on and on off switch and have power and ground to the igniter. Car only starts on starting fluid then cuts off uploadfromtaptalk1428007924214.jpgand injectors not getting any power. What am I over looking. This is a pic of my body loom. Chaser... What is this capped off plug???Can some one pleas help
 
S.A. supra

S.A. supra

New Member
Feb 15, 2009
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Buda, Texas
Stop, and do your research. No one can help you if you don't know what you are doing yourself. This is what I did to keep it clean and know which wire is which. If not you will be chasing gremlins, and that's no fun. Once you start cutting wires and what not you open up a can of worms. Got to keep track of each one and be able to identify. I had to source extra plugs for this but it made things a lot easier
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478slimm

478slimm

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Sep 23, 2013
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Georgia
Dude I've searched and googles everything possible. All of the pinouts I've found aren't accurate. Some one told me to go by the pic and that's not accurate either, for starters in the pic it says green wire from IJ1 is fuel but on my plug green from IJ1 is power for the ac compressor. I'm not slow by a long shot and I follow directions with no problem.
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uploadfromtaptalk1428010488637.jpg
 
478slimm

478slimm

New Member
Sep 23, 2013
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Georgia
I built this car from ground up with no problem so my mechanical and electrical skills are decent I'm not a noob. Jus can't find exactly what I need for the 1j. I saw only 1 thread with a guy that had the same exact harness like mine but they didn't let go any info on how to wire it up.uploadfromtaptalk1428011682848.JPG
 
S.A. supra

S.A. supra

New Member
Feb 15, 2009
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Buda, Texas
Colors are gonna get it, you need plug pinout of every plug for both cars and pinout for the 1j ecu. Pin numbers and function of those pins is what you need.
 
478slimm

478slimm

New Member
Sep 23, 2013
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Georgia
Well I used this and it says exactly what pin does on each plug but for starters IJ1 plug it says there's no wire in pin #4 but on my plug there is a wire there. That is where I get lost at
 
S.A. supra

S.A. supra

New Member
Feb 15, 2009
2,405
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0
Buda, Texas
IMAG0247.jpgIMAG0246.jpgI've done a 1j and a 2j swap. With the harness off identify, and label every wire first. This is why you need all those pinouts.
 
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