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Two Speed Axle Switch /
OEM
/
Description:
The Two Speed Axle Switch parameter is available
for vehicles equipped with a two speed axle. When
a two speed axle is used, the change in gear ratio
from the main drive axle ratio to the two speed axle
ratio alters the calibration of the vehicle speed signal.
Programming this parameter to one of the Alternatives
allows the switch to be used. When the switch is in
the ON position, the ECM can then automatically adjust
the vehicle speed calibration. This ensures that the
speedometer is driven by the ECM and that the ECM
stored information correctly refl ects the actual vehicle
speed.
Available:
All electronically programmable on-highway engines
covered in this handbook
Range:
Engine Range Cat Default
Pre 2007
J1/P1:6, J1939 Body Controller,
J1939 Cab Controller, J1939
Instrument Cluster*
None
EPA’07
and
newer
C7, C9,
C13, C15
J1/P1:6, 7, 22, 23, 35, 40, 44, 45,
46, 47, 56, 58, 59, 60,
Or
J1939 Body Controller
J1939 Cab Controller
J1939 Instrument Cluster
J1939 Cab Display
None
*Note: J1939 alternatives available PM JAN02 and after on heavy-
duty engines
Input Selection