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component id. ? used in auto trans ecu

Discussion in 'Hobby Electronics' started by mark krawczuk, Feb 22, 2007.

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  1. hi , i have a auto transmission ecu , and i am trying to id some
    components , they are bolted to a heatsink and have :

    a T on it , and 8c written in tiny letters , then under that it
    has 8055P


    written on it , also has 5 leads coming out of them , and i am pretty sure
    that they control the shift solenoids for the auto transmission.

    also in the ecu is a component labelled B946 .


    any info or where to get the parts will be appreciated.
    thanks,
    mark
     
  2. TT

    TT Guest

    : hi , i have a auto transmission ecu , and i am trying to
    id some
    : components , they are bolted to a heatsink and have :
    :
    : a T on it , and 8c written in tiny letters ,
    then under that it
    : has 8055P
    :
    :
    : written on it , also has 5 leads coming out of them ,
    and i am pretty sure
    : that they control the shift solenoids for the auto
    transmission.
    :
    : also in the ecu is a component labelled B946 .
    :
    :
    : any info or where to get the parts will be appreciated.
    : thanks,
    : mark
    :
    It is usually cheaper/easier to source a second hand unit
    from a wrecker.

    BTW modern ECUs are quite robust and seldom give problems
    (unless they are Mitsubishis). Are you sure this is *the
    problem*.

    Secondly, a lot of post 2000 ECUs can't be swapped from
    different vehicles as they are coded to the cars BCM (Body
    Control Module) so be careful.

    BTW It would have been beneficial to actually mention the
    model and year of car you have as I do have several old ECUs
    kicking around.

    Cheers TT

    http://www.swat.com.au/
     
  3. hi, its from a 1988 holden jackaroo with the 4ze1 engine.
    thanks.

    mark k
     
  4. TT

    TT Guest

    Hold the bus! IIRC this has a hydraulic controlled
    transmission fitted to this year model. Are you 110%
    certain the ECU is for the trans? *IF* it is electronically
    controlled there will be two computers as these do not have
    an integral Eng/Trans ECU. *IF* it is the Trans ECU it will
    be made by Aisin, probably have 1 plug and only about a
    dozen wires.

    I would strongly suggest (before you go any further) you
    give a little more information e.g what's the problem. Also
    crawl under the vehicle and count the wires coming out of
    the gearbox. Excluding the transfer case and the
    Neutral/Start switch that is located on the gear selector
    rod.

    Regards TT
     
  5. hi, yes it definately is for the trans.
    the engine ecu is mounted under the centre console , and the trans ecu is
    mounted with 4 nuts right nextto teh steering colum.
    i replaced the trans ecu with a 2nd hand unit , now the trans works perfect
    !!!! i want to see if i can fix up the other one , and use it for a
    backup,.

    thanks
    mark k
     
  6. TT

    TT Guest

    Well Mark that's great that you fixed it. Ring your
    nearest Mitsubishi dealer (yes, Mitsubishi) and ask them who
    they get to repair all their computers. Then contact that
    person for sources of components you are chasing. I'm sorry
    that I don't delve ant deeper than this as I find it too
    cost/time prohibitive to chase and source PCB bits.

    Cheers TT
     
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