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Vehicle Speed Input /
OEM
/
Description:
The ECM has an input circuit that can be used to
connect a hardwired vehicle speed sensor producing
a differential input signal, or a single ended signal from
an electronic control. To make use of this feature, the
Vehicle Speed Input parameter must be programmed to
the Default option listed below. The ECM can also be
confi gured to receive vehicle speed information from
an Electronic Transmission Control Unit via the J1939
datalink, provided that the transmission is capable of
supporting the J1939 ETC1 Broadcast Message protocol.
Note that if this method is to be used, the J1939 Trans
option must be selected as well.
Available:
All electronically programmable on-highway engines
covered in this handbook
Range:
Range Cat Default
J1/P1:32 & 33
J1939 Trans
J1939 ABS*
J1/P1:32 & 33**
*Note: J1939 ABS alternative not available on PM OCT01 heavy-duty
engines (C-10, C-12, C-15, C-16)
**Note: Default value is “None” for C7 and C9 medium-duty engines
(PM MAR04 to pre-2007)
Input Selection