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Need pinout for engine control module 89661-47390

Discussion in 'Gen 3 Prius Technical Discussion' started by anonymous, Aug 5, 2020.

  1. anonymous

    anonymous Member

    Joined:
    May 18, 2015
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    Location:
    US
    Vehicle:
    2011 Prius
    Model:
    II
    Does anyone have access to the pinout information for the gen 3 engine control unit (part # 89661-47390)? I want to find the two wires that go to the downstream oxygen sensor.
     
  2. anonymous

    anonymous Member

    Joined:
    May 18, 2015
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    Location:
    US
    Vehicle:
    2011 Prius
    Model:
    II
    I found out myself the hard way and the blue (+) and white (-) wires of the downstream oxygen sensor correspond with these pins marked by the blue and white circles:

    IMG_20200806_153414_3.jpg
    IMG_20200806_155141_2.jpg

    Since I had to crawl underneath to find this out it defeated my need for this information; I tapped into the wires at the end on the sensor's side of the connector. But maybe this information may be helpful for someone else; if you have a P0420 and want to hack fix it but don't want to crawl underneath the car then you can tap into the wires right here.
     
    Cosmo Tigato likes this.
  3. Gse

    Gse Junior Member

    Joined:
    Jul 20, 2023
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    Location:
    US
    Vehicle:
    2011 Prius
    Model:
    Three
    I appreciate this post! How would I "tap" into these?

    Maybe this is where the cascade of engine codes started after my o2 was ripped off...