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Thread: 2JZGTE VVTi Immobiliser

  1. #1
    Junior Member Grease Monkey
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    Default 2JZGTE VVTi Immobiliser

    Help

    My friend in the Netherlands has found a 2JZGTE VVTi motor with Getrag V160 box but this version had an immobiliser fitted to the ECU - and of course the supplier didn't keep the ignition switch with the keys.

    Engine starts but can't run properly without the immobiliser.

    Anyone know a work aorund this ????

    Thanks
    Graham D
    Lexus RX350 (no mods yet !!!)
    Lexus IS200 / 2.5GT-T (1JZGTE VVTi + Getrag 6 Speed)
    Lexus IS200 (wife's car and no mods allowed !!!)
    Suzuki GSX750-F

  2. #2
    back into it Chief Engine Builder
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    Default Re: 2JZGTE VVTi Immobiliser

    aftermarket computer!

  3. #3
    Junior Member Automotive Encyclopaedia
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    Default Re: 2JZGTE VVTi Immobiliser

    Yes i think it will be a challenge for him , you could get the jap version ecu which does not run the imobiliser,
    Can you guys get any wiring diagrams for the vvti 2jz gte over there.
    Dave

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    Founding ****** Automotive Encyclopaedia Mos's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    Graham,
    I wasn't aware that the engine will even start
    He will need a Key ECU - afaik they all seem to be the same but I can't be sure.
    He will need a transponder type key to go with it.
    Normally an additional key can be programmed into the engine ECU though it requires an original master key.
    If a master key is not available the engine ECU is able to be "cleared" so any transponder key can be programmed into it without need for a master key - Lexus in the US does that if you send the engine ECU to them, I have yet to check if Lexus in Aus will do it off the street.
    Hope this helps.

    Edit: Dave, I wasn't aware the JDM ecus didn't have immobilisers - is this certain?

    Mos.
    Admin, I.T., Founding Member, Toymods Car Club Inc.
    2000 IS200 Sports Luxury 1UZ-FE VVTi, 1991 MX83 Grande 2JZ-GTE (sold)

  5. #5
    Junior Member Automotive Encyclopaedia
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    Default Re: 2JZGTE VVTi Immobiliser

    The jdm ecu doesn't have it for sure , i painstakingly dicected the wiring from a 2000 jza 80 , didnt have a transponder and no key ecu , and the engine ran fine , when it was still together.
    Its a problem for all the imports as there an easy target for thieves.

  6. #6
    Founding ****** Automotive Encyclopaedia Mos's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    Dave - thanks for that - you wouldn't happen to know if that's the same across all JDM ecus?

    Graham - a potential possibility would be to get the engine ECU wiped by Lexus and then build a microcontroller based device that would send some sort of pulse stream that the engine ECU would accept as a valid transponder signal. This pulse stream would then mimick the transponder. As I haven't looked at the pulse stream of a working immobiliser I have no idea if this is that simple or gets much more complex...
    (Got new toys at work today, so may take a look at the IS200 immobiliser pulse stream this weekend).

    Mos.
    Admin, I.T., Founding Member, Toymods Car Club Inc.
    2000 IS200 Sports Luxury 1UZ-FE VVTi, 1991 MX83 Grande 2JZ-GTE (sold)

  7. #7
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    I cna confirm my JZA80 vvti doesn't have the immobiliser.
    Dave... you wouldn't have happened to have kept a record of the wiring diagrams would you? (which I could trade for sex?)
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  8. #8
    Junior Member Domestic Engineer
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    Default Re: 2JZGTE VVTi Immobiliser

    no ecu in japan has security on it unless its very very new im not sure

    and usually if security is on the ecu it wont let u start it

    maybe there is another problem with it like its in limp home mode

    i have the jap diagrams for the 2j vvti and they dont have any security

    if u can compare part number of ecu and see if its a different model then maybe try get diagrams for it and see if there is any security wires goin to the ecu

    but if it starts and runs id be lookin at other probs

  9. #9
    Junior Member Automotive Encyclopaedia
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    Default Re: 2JZGTE VVTi Immobiliser

    Still going thru all the wiring , its not on the priority list so it may be a while,
    Dave

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    Junior Member Automotive Encyclopaedia Alchemist's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    Quote Originally Posted by sideshow
    no ecu in japan has security on it unless its very very new im not sure
    The 2ZZ ECU's from the 99+ ZZT231 Celicas use transponder keys, I'm guessing the Sportivo Corollas also do...

    A copy of the Supra Manual can be found here, I've not downloaded it yet, so it may or may not help, but no harm in looking?

    http://www.mkivsupra.info/man/SUPRA.zip

  11. #11
    Junior Member Grease Monkey
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    Default Re: 2JZGTE VVTi Immobiliser

    Thanks guys

    Came back after the weekend and there have beens several postings.
    Graham D
    Lexus RX350 (no mods yet !!!)
    Lexus IS200 / 2.5GT-T (1JZGTE VVTi + Getrag 6 Speed)
    Lexus IS200 (wife's car and no mods allowed !!!)
    Suzuki GSX750-F

  12. #12
    Junior Member Domestic Engineer
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    Default Re: 2JZGTE VVTi Immobiliser

    i recently wired up a jap import 2zz from a sportivo

    it had no security on the ecu

  13. #13
    Junior Member Automotive Encyclopaedia Alchemist's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    Quote Originally Posted by sideshow
    i recently wired up a jap import 2zz from a sportivo

    it had no security on the ecu
    Dunno, but on my Dads and friends cars, both ZZT231's specify that the car will not start without a transponder key, we've had copies made, and confirmed they won't start without them....

  14. #14
    Junior Member Backyard Mechanic 3sgte's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    There are more than a few different immobiliser systems on different models of Toyota/Lexus.

    Some use a separate immobilizer ECU (97 LS comes to mind)
    Some use an immobiliser built into the ECM.

    A very select few locksmiths in the US/Canada have the ability to wipe the ECM key memory (on a bench). Proof of ownership etc would be needed.

    The behaviour described when attempting to start the vehicle certainly sounds plausible for an immobilizer.

    Do you have an ability to get any codes out of it?
    (presumably OBD2)

  15. #15
    Founding ****** Automotive Encyclopaedia Mos's Avatar
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    Default Re: 2JZGTE VVTi Immobiliser

    Quote Originally Posted by Alchemist
    Dunno, but on my Dads and friends cars, both ZZT231's specify that the car will not start without a transponder key, we've had copies made, and confirmed they won't start without them....
    They're locally delivered, right?
    Sideshow was saying jap imports don't have them... It is my understanding that there is a requirement for all locally delivered cars to be fitted with immobilisers - it's more than plausible that JDM vehicle don't have them fitted, and given people's comments it looks this way.

    3sgte - I could be wrong in this application but from what I have seen the OBD2 port comes off the body ECU of the vehicle, which communicates with the engine ECU through an Multiplex bus. If they only have the engine ECU chances are they won't have the ability to interrogate the OBD2.

    How is the immobiliser implemented in the 97LS? (UCF20/1 I presume?) I'm curious how they differ from the ones "built into the ECM" which I'd presume to be the key tranponder types?

    FWIW the key or transponder ECU on the IS200 doesn't appear to be manufactured by Nippon Denso. It gets power whenever the engine ECU turns on the EFI relay and has three data lines running to the engine ECU (and nothing else). AFAIK there is no other immobilisation feature on this vehicle.

    Mos.
    Admin, I.T., Founding Member, Toymods Car Club Inc.
    2000 IS200 Sports Luxury 1UZ-FE VVTi, 1991 MX83 Grande 2JZ-GTE (sold)

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