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What kind of car is this 1jz harness from?

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Old 02-19-12, 08:56 PM
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soarer13oy
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Thank you sir!
Old 02-19-12, 09:12 PM
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xspsi6
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+1 thanks that is a big help, Now I need to get all of this mess figured out which should be fun!
Old 02-20-12, 05:20 AM
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spoolxexo
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No problem Fellas. There are going to be more Chaser 1jzs then Soarer and Supra soon. Might as well be ready!
Old 02-23-12, 10:58 AM
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xspsi6
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Originally Posted by spoolxexo
No problem Fellas. There are going to be more Chaser 1jzs then Soarer and Supra soon. Might as well be ready!
Would you happen to have an english version of a wire schematic for the jzx90?
Old 02-23-12, 11:07 AM
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Nope, no one does.

It is the same as the JZZ30 TT ECU as far as the pinouts are concerned, what you need to do is decode your body functions on the chaser harness.

RPM, Speedo, Reverse lights, clutch switch, MREL+, etc.
Old 02-23-12, 02:27 PM
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xspsi6
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I was scared of that reply^^ I guess I will either do that or run an aristo ecu and harness. I am still in the research end of the best way to tackle this.
Old 02-23-12, 02:56 PM
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spoolxexo
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Being scared doesn't build cars!

All you have to do, when the 1jz harness gets in your possession, is trace the wire colors from the corresponding sensors that you need to run to the dash. (Igniter signal for Tach, speed sensor, reverse lights, clutch safety switch, etc.)

Run that into the stock sc300 harness and you have AC and everything.

If you can wire up a car head unit, you can wire up a JZ harness, I don't know what all the fuss is about.

Getting it to run takes like, four wires.

ECU power, Coil power, injector power, and get the fuel pump running.

You don't necessarily have to run the [====] [===] [xxx] [===] plug in the ecu just to start it.

All it is main relay, and Check engine light.
Old 02-23-12, 04:17 PM
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xspsi6
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Originally Posted by spoolxexo
Being scared doesn't build cars!

All you have to do, when the 1jz harness gets in your possession, is trace the wire colors from the corresponding sensors that you need to run to the dash. (Igniter signal for Tach, speed sensor, reverse lights, clutch safety switch, etc.)

Run that into the stock sc300 harness and you have AC and everything.

If you can wire up a car head unit, you can wire up a JZ harness, I don't know what all the fuss is about.

Getting it to run takes like, four wires.

ECU power, Coil power, injector power, and get the fuel pump running.

You don't necessarily have to run the [====] [===] [xxx] [===] plug in the ecu just to start it.

All it is main relay, and Check engine light.
Well I have an a 97 sc400 so I am trying to find the best way to tackle the wireing issue since I don't have a sc300 harness to modify so I have to use this harness I suppose.
Thanks for the info!

Last edited by xspsi6; 02-23-12 at 04:28 PM.
Old 02-23-12, 04:52 PM
  #24  
spoolxexo
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Originally Posted by xspsi6
Well I have an a 97 sc400 so I am trying to find the best way to tackle the wireing issue since I don't have a sc300 harness to modify so I have to use this harness I suppose.
Thanks for the info!

That's not a big deal.

Rip out the SC400 injection and just use the speed sensor and whatnot.


The sc300/400 FSM is available with a google search. It will tell you the wire color and what it does.

Combine the two and you are all set!
Old 02-23-12, 07:20 PM
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jtamulis
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Yeah, that doesn't look like the supra one to me.
Old 02-24-12, 08:32 AM
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88supramki
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I'll see if I can find anything additional through all of my saved threads
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