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Data Link Parameters
Powertrain Data Link
Description:
The Powertrain Data Link parameter determines if or
how the ECM will communicate to a powertrain device,
such as a wheel-slip or anti-lock brake control. Different
datalinks are used by the various controls depending on
the manufacturer of the powertrain device.
The standard ECM for midrange engines (3126E, C7, &
C9) communicates with the J1939 data link. C-10, C-12,
C-15, C-16 heavy duty engines with PM OCT01 and older
can communicate with either J1922 or J1939, depending
upon how it is programmed. With the JAN02 PM, the
J1922 standard was no longer supported, therefore all
of the most current on-highway engines support J1939
data link communication only.
Available:
All electronically controlled on-highway engines
covered in this handbook
Range:
Engine Range
Cat
Default
3126E, C7, C9
GM
None
J1939
J1939
3126E, C7, C9
Other
None
J1939
None
C-10, C-12, C-15, C-16 (PM
OCT01 and older)
Off
J1922, J1939,
J1922 & J1939
Off
C7 & C9 (EPA’07 and
newer), C-10, C-12, C-15,
C-16 (PM JAN02 and
newer) C11, C13, C15
None
J1939
J1939
Advantages:
The Powertrain Data Link parameter allows the ECM
to work with the various “Industry Standard” datalinks
available on powertrain devices today.
Disadvantages:
None
Recommendations:
✔ This parameter should be programmed to the
datalink necessary to communicate with the
powertrain device(s) installed on the truck.