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Full Ecu swap with parts car / Can't get past the immobilizer?

Discussion in 'Gen 2 Prius Technical Discussion' started by Aaron J, Jun 6, 2018.

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  1. Aaron J

    Aaron J New Member

    Joined:
    Jun 6, 2018
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    Location:
    Norton, Va
    Vehicle:
    2004 Prius
    Model:
    II
    2004 Prius Gen 2. Got Cylinder 1 misfire / replaced all 4 plugs and coilpack 1 / compression test good / heads good / traced it back to no injector pulse / injector 1

    Took all ECU/ECM parts out of an existing wrecked prius including 5 ECU/ECM modules / key dock / key from the existing car / and ignition switch.

    Key is recognized by the switch however the car will not turn over and seems to be stuck in the immobilzer? part

    Is there a specific immobilizer module that we are missing?

    We have replaced everything under the dash / one module over the steering column / two to the upper left / one over the glovebox and the whole gaggle of ecu stuff behind the glove box.

    Any suggestions? What am i missing?
     
    #1 Aaron J, Jun 6, 2018
  2. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Engine ECM control's fuel injection duty cycle. Why are you shotgunning all the ecu's?

    Gateway is probably jacked up. Can you hook an OBD to it and get codes? If not the Can is off line.
     
    #2 edthefox5, Jun 8, 2018
  3. ChapmanF

    ChapmanF Senior Member

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    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Risk of adding iatrogenic problems on top of the original ones goes way up when replacing a slew of parts just because they're there, without diagnostic justification....

    -Chap
     
    #3 ChapmanF, Jun 8, 2018
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