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OBD 2 - Dodge 47re tranny

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  • 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
    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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