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Thread: CM2350 Bench Connection

  1. #1
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    Default CM2350 Bench Connection

    Connecting with Cummins Software.

    J1939+ 21
    J1931- 45
    GND 49 & 50
    +12V 25 & 26
    IGN 5 (switched)

    Connecting With V2

    GND 49 & 50
    +12V 25 & 26
    IGN 5 (switched)

    Please Fill in the blank for CAN H&L and additional information if you have.

  2. #2
    Forum tyhee Site Admin GMPX's Avatar
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    CAN + 22
    CAN - 46

    And like the J1939 port the 500K CAN bus requires a 120 Ohm load if you have the ECM on the bench.
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.


  3. #3
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    Default


  4. #4
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    any tips on unlocking the ecm via bench harness. Have no issue connecting with v2. when I connect with a bd to unlock ecm I get an error. ((connecting unlock cable to j1939(yes can and j1939 have 120 Ohm resis.))

  5. #5
    Lifetime Member DURAtotheMAX's Avatar
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    Which connector is this on? J1 blue? or J2 green?

    Im guessing green, because pins 21/45 on the green connector had 120 ohms resistance across them, which would be terminated CAN ports.
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  6. #6
    Forum tyhee Site Admin GMPX's Avatar
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    Green (C2) is the connector that has all the necessary bench connections, C1 has the J1939 connections for the BD unlocker.
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.


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