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Thread: Cummins Bench Harness pinout (pictures)

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    Forum tyhee Site Admin GMPX's Avatar
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    Nick, it will have to wait a week, I am over in NZ for the moment, I have all the Cummins pin-out data (pictures) back in Australia.
    Meanwhile, if anyone knows of a source for the connectors on these that would be great to know.
    For bench flashing the 5.9L ECM needs C1 & C2, for the 6.7L it only needs C2.
    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.

    In The Garage:
    2014 Holden Cruze 2.0L Diesel, A6 (E20 ECM), 430Nm @2,500, (Highway 4.5L/100km : 52MPG), sweet apart from being FWD!
    1967 Cadillac Fleetwood 75 Sedan.
    1964 Cadillac Fleetwood (2010 L96/4L60E swap in progress).

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    Those look like Deutsch pin connectors (www.laddinc.com). The 2006 one is very similar (looks like a DRC Series). Harder to tell looking at the picture of the 2009. If they are Deutsch, one source would be your local Caterpillar dealer. There are others on the web too.

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    Lifetime Member Cougar281's Avatar
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    Here's what I found for the 2006 ECM:

    C1
    4 - CAN+
    5 - CAN-


    C2
    21 - Ground
    30 - Battery +12
    32 - Start/Run +12
    40 - Battery +12
    49 - Ground
    50 - Ground

    According to the data I got from OnDemand, it appears that that pinout is the same for the 2009 ECM as well.

    Personally, I think that anyone that designs an ECM that requires more than one connector to be bench flashed should be beaten....

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    Forum tyhee Site Admin GMPX's Avatar
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    Quote Originally Posted by Cougar281 View Post
    Personally, I think that anyone that designs an ECM that requires more than one connector to be bench flashed should be beaten....
    Agreed, GM are guilty of this too on some of the gas ECM's.
    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.

    In The Garage:
    2014 Holden Cruze 2.0L Diesel, A6 (E20 ECM), 430Nm @2,500, (Highway 4.5L/100km : 52MPG), sweet apart from being FWD!
    1967 Cadillac Fleetwood 75 Sedan.
    1964 Cadillac Fleetwood (2010 L96/4L60E swap in progress).

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    Lifetime Member dansdieselp's Avatar
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    Anyone know where we can get the connectors and pins besides the dealer? They quoted me $149 for C1 and $169 for C2 for the 5.9L and they say they don't make any connectors for the 6.7l. Although it could be the dealer I went to.

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    Does anyone know if the 2006+ can bus ECM will work as a stand a lone in my race truck. Right now I have a 03-04 ecm working but want to go with EFI. I have everything to convert it to 2006 hardware.

    Thanks

    ps I have access to wiring info if i can help.

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    I was doing some research and it looks like on the 6.7 the Can+ is pin #1 and Can- is pin#21 on the C2 connector.


    Malcolm
    1990 CHEVY SILVERADO POWERED BY 03 CUMMINS SHIFTED BY PCS 48RE. BEST ET TO DATE 9.91@150.23 MPH

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