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CAN controller/monitor for the Gen II Prius

Discussion in 'Gen 2 Prius Accessories & Modifications' started by FirstFlight, Aug 19, 2012.

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  1. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    someone may know more than me but techstream is toyota version of alldata(autozone) If you do certain specific maint procedures techstream tis is a requirement. ebay does have tis techstream v7 lite mini vci
     
    #21 NortTexSalv04Prius, Sep 2, 2012
  2. nh7o

    nh7o Off grid since 1980

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    Not sure, but you would need a dealer level TIS to register new key fobs in a car that has none. Otherwise, it looks pretty complete.
     
    #22 nh7o, Sep 2, 2012
  3. FirstFlight

    FirstFlight Member

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    Seems like a good deal to me. There's no point in trying to make a product that interfaces with the CAN, KWP and does quasi-Techstream stuff if already exists. Seems to me the only difference is that you need a laptop to work with the mini vci. Is there really a market for a standalone version (no laptop required) that has some type of user interface where it can be used on a daily basis for driving? I'm thinking no and I'm thinking of ordering the mini vci myself. For $30, you can't beat it.

    I'm still going to finish the CAN device for my car but I see no point in trying to market it now.
     
    #23 FirstFlight, Sep 2, 2012
  4. John H

    John H Senior Member

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    What seems to be missing, and I haven't looked hard, is a device that can be plugged in and left in place that logs the data for several months and can be downloaded to a pc for analysis. the download could be via an SD memory card, or through a wifi connection.

    a configuration file stored on the SD card could drive what PIDs are logged as well as provide information like where to send the log files when a wifi connection is active. a log file for each "trip" would be great, a trip being the vehicle was turned on. Perhaps an easy way to get the wifi functionality would be to just use a Eye-Fi card and have the device emulate a digital camera, snapping a "photo" for each trip.

    the device could also provide a gui, via the wifi/usb if connected, as html5 served by a embedded http server. the gui could provide configuration as well as drive time monitoring with a tablet, smartphone, or laptop browser as a client.

    the "car chip" is the only thing I have found that logs the data, but it has a fixed set of PIDs it will record and you have to disconnect it from the vehicle and connect it via usb to download the data to a pc. it does provide some audible alerts for things like hard braking.

    what I am interested in is long-term comparative monitoring. i.e. for the 20 mile drive I make 200 times a year, how is my fuel consumption compare, HV battery cycles compare, warm up times, catalytic converter temperatures, battery module voltages, 12V battery voltages, etc ...
     
    #24 John H, Sep 2, 2012
  5. vertex

    vertex Active Member

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    The Techstream provides the DTCs and the inf codes. All other code readers, including Auto Enginuity to my knowledge do not provide inf codes. These codes make troubleshooting much simpler.
     
    #25 vertex, Sep 2, 2012
  6. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    may or may not need subsription to TIS not exclusive to Toyota dealer
     
    #26 NortTexSalv04Prius, Sep 3, 2012
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