2jzge starting problems

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  1. #1
    Member Dr_Jun_Manabe's Avatar
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    2jzge starting problems

    Hey there, I just got my motor in and wiring done but I am confused on how to get past the neutral safety switch, NSW, and STA related things, can any JZ guys chime in on how they were able to bypass this? Its a 93 SC300 2jzge, originally auto. Should be similar to GS300's

    Car cranks and fuel pump is working, check engine light is on before cranking and after.
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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  3. #2
    Boosting Mod SilverMk2's Avatar
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    Connect them together with a switch. The circuit needs to be closed to start. If you leave it closed all the time you will get a soft rev limit.

  4. #3
    Member Dr_Jun_Manabe's Avatar
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    I am confused, a normal switch? This would go between the 2 park/neutral position switch terminals on the ecu correct? So if starting, theoretically I could just tap the 2 wires while cranking to start the car?

    Thanks though
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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    Boosting Mod SilverMk2's Avatar
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    Pin 76 needs to connect to Pin 77 to start. The connection to 77 should have a normally open switch there. If its not switched you will get a ~5500rpm rev limit. Pin 77 needs to connect to E1-12 at least for 85.

  7. #5
    Member Dr_Jun_Manabe's Avatar
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    Quote Originally Posted by SilverMk2 View Post
    Pin 76 needs to connect to Pin 77 to start. The connection to 77 should have a normally open switch there. If its not switched you will get a ~5500rpm rev limit. Pin 77 needs to connect to E1-12 at least for 85.
    alrighty, one more question, is e1-12 on the 2jzge ecu side or 5mge side?
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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  8. #6
    Member Dr_Jun_Manabe's Avatar
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    well i just ran a wire from the starter switch under the dash that goes into the ignition, 0v while not cranking, and 12v when cranking this would work correct? what about the pins 9 and 10 on terminal B on ecu side also labeled park/neutral position switch?
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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  9. #7
    CelicaSupra.com Member Mkeller316's Avatar
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    2jzge starting problems

    Did you pull codes yet?
    Matt K.

    84 P type - retired DD stainless steel header, Rabid Chimp 2.5 exhaust. 2.5 all the way back to the muffler,kyb agx's 2jzge swapped Hidden Content

  10. #8
    Member Dr_Jun_Manabe's Avatar
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    stays solid, jumped te1 to e1 and nothing
    edit- throwing code 27, sub o2 lol

    code 14, ignition signal
    Last edited by Dr_Jun_Manabe; 01-23-2014 at 06:03 PM.
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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  11. #9
    Boosting Mod SilverMk2's Avatar
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    Have you provided power to the ignitor and I assume the ignitor is plugged in? That would explain the code 14, it's not going to run with that going. E1 is the connector on the 5M ECU that the dash harness plugs into.

  12. #10
    Member Dr_Jun_Manabe's Avatar
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    i have 13.1v on the middle connector of the igniter, this sucks lol, im sooooo close!

    is e1-12 ig/sw?
    Last edited by Dr_Jun_Manabe; 01-23-2014 at 07:42 PM.
    85 Celica GT - DD
    85 Celica Supra P-Type - 2JZGE (Knock knock)
    84 Celica GT-S (Sold and will be missed)
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