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Thread: OBD 2 - Dodge 47re tranny

  1. #1
    Newbie
    Join Date
    Dec 2010
    Posts
    1

    OBD 2 - Dodge 47re tranny

    Hi, I have a 1998 Dodge 2500 with the 12v Cummins (mechanical, not computer controlled). I'm looking to insert custom PID's into Torque on my Android phone so that I can read the Transmission Temp.

    Could someone lend a hand with this? How can I find out the PID perameters?

    I've got some OBD2 software for my phone, and a connector. I can read the following out of the box:
    Speed (ECU)
    Intake temp
    RPM
    Coolant temp
    Throttle (although my foot off the pedal gives a throttle of 16.9%, and floored I get about 89%)
    Load (again, not sure if this one reads correctly - seems close anyways)

    I can program in anything else I want as long as I have the following information (this is where I'm thinking I'd like to get trans temp if the ECU reads it):

    OBD2 PID (in hex)
    Long Name
    Short Name
    Minimum Value (typically 0)
    Maximum Value
    Scale Factor
    unit type
    equation (eg: a*b+20)


    Thanks,

  2. #2
    VENDOR - ScanTool Vitaliy's Avatar
    Join Date
    Dec 2006
    Location
    Phoenix, AZ
    Posts
    624
    The best way is to get your hands on the SAE J1979 spec.

    If you don't want to spend the $80 (or whatever), you can refer to this list on Wikipedia:

    http://en.wikipedia.org/wiki/OBD-II_PIDs
    OBDLink MX: world's smallest, fastest, most advanced OBD/Bluetooth adapter with SW and MS CAN support. Read the review to learn more.
    Need to look up a diagnostic trouble code? Try the most up-to-date, free DTCsearch.com!

    You cannot send me a private message using this forum. Use my email instead: vitaliy[@]scantool.net.

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