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Thread: Wiring the 1UZ-FE into a Pre-89 Supra

  1. #11
    1UZFE SWAP DUDE!!!

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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    just found the 94 book again. what info would you like me to take pictures of?

  2. #12
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    The engine control wiring, mainly need to see if your book has the wiring for the cold start injector, mine does not. Thanks, you have a PM regarding the same subject.

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    2003 Toyota RAV4 - NA 4 Door - 2.0L 5 Speed Manual AWD
    1987 Toyota Supra - NA Hard Top - 1UZ-FE+DET3+Vortech = 1 Good Time

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  3. #13
    1UZFE SWAP DUDE!!!

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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    i pm'd the scans.

  4. #14
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    Major Update, I have assembled the Guide for the 1997 1UZ-FE - Pre-89 MA70 Supra. Scroll down below the pinout info on the first page to see.

    Whats in the Garage..... Well the yard!
    2003 Toyota RAV4 - NA 4 Door - 2.0L 5 Speed Manual AWD
    1987 Toyota Supra - NA Hard Top - 1UZ-FE+DET3+Vortech = 1 Good Time

    1UZ-FE Information Center
    1UZ-FE + Pre-89 MA70 Wiring
    1UZ-FE + W58 + MA70 Parts List
    1UZ-FE/SC400 Manual

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  5. #15
    1UZFE SWAP DUDE!!!

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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    hey, did you ever get the 94 tewd photos I sent you months ago?

  6. #16
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    Yup, they matched the book I had. I'm thinking Im going to order the 1992 and 1996 books next.

    Whats in the Garage..... Well the yard!
    2003 Toyota RAV4 - NA 4 Door - 2.0L 5 Speed Manual AWD
    1987 Toyota Supra - NA Hard Top - 1UZ-FE+DET3+Vortech = 1 Good Time

    1UZ-FE Information Center
    1UZ-FE + Pre-89 MA70 Wiring
    1UZ-FE + W58 + MA70 Parts List
    1UZ-FE/SC400 Manual

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  7. #17
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    1992-1994 SCx00 are the same and 1995-1997 SCx00 are the same. In 1998 they started running the VVTi versions of both the 2JZ-GE and 1UZ-FE. For the purpose of putting a 1UZ into an MA70 chassis, the small changes in 1UZ harnesses is irrelevant.
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  8. #18
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    Quote Originally Posted by TweakTech View Post
    ...For the purpose of putting a 1UZ into an MA70 chassis, the small changes in 1UZ harnesses is irrelevant.
    Not true, for MA70 swaps on the SC connector IJ1 pre 96 has less power wires for the electrical engine components. I had wired my jumper harness for pre 96 and my harness is from a 96, well it didn't run. Thats because some of the engine harness was not getting power. If you pull connectors from pre 96 SC vs 96-98 they differ slightly. IJ1 had the biggest change it seems, and from what I have learned the pre 96 fuel injectors are wired differently than the 96-98.

    Whats in the Garage..... Well the yard!
    2003 Toyota RAV4 - NA 4 Door - 2.0L 5 Speed Manual AWD
    1987 Toyota Supra - NA Hard Top - 1UZ-FE+DET3+Vortech = 1 Good Time

    1UZ-FE Information Center
    1UZ-FE + Pre-89 MA70 Wiring
    1UZ-FE + W58 + MA70 Parts List
    1UZ-FE/SC400 Manual

    MidEast Region Supra Owners
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  9. #19
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    Quote Originally Posted by Chambers View Post
    Not true, for MA70 swaps on the SC connector IJ1 pre 96 has less power wires for the electrical engine components. I had wired my jumper harness for pre 96 and my harness is from a 96, well it didn't run. Thats because some of the engine harness was not getting power. If you pull connectors from pre 96 SC vs 96-98 they differ slightly. IJ1 had the biggest change it seems, and from what I have learned the pre 96 fuel injectors are wired differently than the 96-98.
    I don't suppose you could be more specific?
    I'm doing a '96 1UZ into an '89 MA70, and I can't get my ECU to turn on. Post 96 1UZs have an extra wire on the 1J1 plug for the fuel injectors; I just jumpered it into a switched source (B-1, Pin 17[black-orange], if I remember correctly) and that solved the injector problem. I also found an extra black-white wire (IJ1, Pin 3) that needed a switched source for the ignition coils. As far as I can tell, those were the only extra changes that had to be done for my '96 1UZ. However, I've done the changes and wired in the CEL and I see that the CEL does not turn on when the key is in the on position, and I'm getting no spark although the Coils and Igniters are showing 12 volts. Do you remember any other changes you had to make? Perhaps some extra grounds?

    1991 Toyota Supra 3.0GT - [7MGTE] 60-1 CT26, AEM, Apexi, Blitz, Eibach, HKS.
    1989 Toyota Supra 4.0V8 - [1UZFE] R154 Manual Conversion, Tein, Tilton.

  10. #20
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    Default Re: Wiring the 1UZ-FE into a Pre-89 Supra

    No extra grounds that I'm aware of. In the dash, is your Black-Orange wire from pin 16 on B-1 connected to the Black-Orange wire from pin 11 on IJ2? That wire comes from your ignition switch, when its tuned to the on position it tells the ECU to kick the EFI-Main relay on, without it the engine will not run. Pre-96 1UZ igniter and fuel injectors get their power from EB2 in the engine bay. 96 and up igniter and fuel injectors get there power from IJ1 at pin 3 and pin 7 both Black-White color, in the dash.

    Whats in the Garage..... Well the yard!
    2003 Toyota RAV4 - NA 4 Door - 2.0L 5 Speed Manual AWD
    1987 Toyota Supra - NA Hard Top - 1UZ-FE+DET3+Vortech = 1 Good Time

    1UZ-FE Information Center
    1UZ-FE + Pre-89 MA70 Wiring
    1UZ-FE + W58 + MA70 Parts List
    1UZ-FE/SC400 Manual

    MidEast Region Supra Owners
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